US20030099668A1 - Packaging of immunostimulatory substances into virus-like particles: method of preparation and use - Google Patents
Packaging of immunostimulatory substances into virus-like particles: method of preparation and use Download PDFInfo
- Publication number
- US20030099668A1 US20030099668A1 US10/244,065 US24406502A US2003099668A1 US 20030099668 A1 US20030099668 A1 US 20030099668A1 US 24406502 A US24406502 A US 24406502A US 2003099668 A1 US2003099668 A1 US 2003099668A1
- Authority
- US
- United States
- Prior art keywords
- virus
- composition
- particle
- antigen
- unmethylated cpg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000002245 particle Substances 0.000 title claims abstract description 194
- 230000003308 immunostimulating effect Effects 0.000 title claims abstract description 139
- 239000000126 substance Substances 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims description 191
- 238000004806 packaging method and process Methods 0.000 title description 15
- 238000002360 preparation method Methods 0.000 title description 4
- 239000000427 antigen Substances 0.000 claims abstract description 333
- 108091007433 antigens Proteins 0.000 claims abstract description 320
- 102000036639 antigens Human genes 0.000 claims abstract description 320
- 108091034117 Oligonucleotide Proteins 0.000 claims abstract description 147
- 241000700605 Viruses Species 0.000 claims abstract description 86
- 230000028993 immune response Effects 0.000 claims abstract description 81
- 229960005486 vaccine Drugs 0.000 claims abstract description 64
- JLCPHMBAVCMARE-UHFFFAOYSA-N [3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[3-[[3-[[3-[[3-[[3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methyl [5-(6-aminopurin-9-yl)-2-(hydroxymethyl)oxolan-3-yl] hydrogen phosphate Polymers Cc1cn(C2CC(OP(O)(=O)OCC3OC(CC3OP(O)(=O)OCC3OC(CC3O)n3cnc4c3nc(N)[nH]c4=O)n3cnc4c3nc(N)[nH]c4=O)C(COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3CO)n3cnc4c(N)ncnc34)n3ccc(N)nc3=O)n3cnc4c(N)ncnc34)n3ccc(N)nc3=O)n3ccc(N)nc3=O)n3ccc(N)nc3=O)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cc(C)c(=O)[nH]c3=O)n3cc(C)c(=O)[nH]c3=O)n3ccc(N)nc3=O)n3cc(C)c(=O)[nH]c3=O)n3cnc4c3nc(N)[nH]c4=O)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)O2)c(=O)[nH]c1=O JLCPHMBAVCMARE-UHFFFAOYSA-N 0.000 claims abstract description 53
- 206010028980 Neoplasm Diseases 0.000 claims abstract description 47
- 230000003612 virological effect Effects 0.000 claims abstract description 34
- 230000005867 T cell response Effects 0.000 claims abstract description 31
- 210000003719 b-lymphocyte Anatomy 0.000 claims abstract description 22
- 101710132601 Capsid protein Proteins 0.000 claims description 206
- 239000000203 mixture Substances 0.000 claims description 185
- 108090000623 proteins and genes Proteins 0.000 claims description 137
- 230000000890 antigenic effect Effects 0.000 claims description 131
- 150000007523 nucleic acids Chemical class 0.000 claims description 119
- 102000039446 nucleic acids Human genes 0.000 claims description 115
- 108020004707 nucleic acids Proteins 0.000 claims description 115
- 102000004169 proteins and genes Human genes 0.000 claims description 110
- 108090000765 processed proteins & peptides Proteins 0.000 claims description 87
- CTMZLDSMFCVUNX-VMIOUTBZSA-N cytidylyl-(3'->5')-guanosine Chemical class O=C1N=C(N)C=CN1[C@H]1[C@H](O)[C@H](OP(O)(=O)OC[C@@H]2[C@H]([C@@H](O)[C@@H](O2)N2C3=C(C(N=C(N)N3)=O)N=C2)O)[C@@H](CO)O1 CTMZLDSMFCVUNX-VMIOUTBZSA-N 0.000 claims description 70
- 102000004196 processed proteins & peptides Human genes 0.000 claims description 66
- 229920001184 polypeptide Polymers 0.000 claims description 62
- 108020004414 DNA Proteins 0.000 claims description 58
- 108010008281 Recombinant Fusion Proteins Proteins 0.000 claims description 57
- 102000007056 Recombinant Fusion Proteins Human genes 0.000 claims description 57
- 241001465754 Metazoa Species 0.000 claims description 52
- 210000001151 cytotoxic T lymphocyte Anatomy 0.000 claims description 48
- 241000829111 Human polyomavirus 1 Species 0.000 claims description 44
- 239000002773 nucleotide Substances 0.000 claims description 43
- 125000003729 nucleotide group Chemical group 0.000 claims description 43
- 210000004027 cell Anatomy 0.000 claims description 42
- 230000027455 binding Effects 0.000 claims description 41
- 239000012634 fragment Substances 0.000 claims description 41
- 230000004048 modification Effects 0.000 claims description 38
- 238000012986 modification Methods 0.000 claims description 38
- 241000282414 Homo sapiens Species 0.000 claims description 37
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 claims description 32
- 108020002230 Pancreatic Ribonuclease Proteins 0.000 claims description 31
- 102000005891 Pancreatic ribonuclease Human genes 0.000 claims description 31
- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 claims description 31
- 241000700721 Hepatitis B virus Species 0.000 claims description 26
- 241001515965 unidentified phage Species 0.000 claims description 20
- 241001430294 unidentified retrovirus Species 0.000 claims description 20
- 102000053602 DNA Human genes 0.000 claims description 19
- 230000002708 enhancing effect Effects 0.000 claims description 19
- 229920002477 rna polymer Polymers 0.000 claims description 18
- 239000002671 adjuvant Substances 0.000 claims description 17
- 230000004044 response Effects 0.000 claims description 16
- 108010015780 Viral Core Proteins Proteins 0.000 claims description 15
- 239000013612 plasmid Substances 0.000 claims description 15
- 102000004895 Lipoproteins Human genes 0.000 claims description 14
- 108090001030 Lipoproteins Proteins 0.000 claims description 14
- 229940115272 polyinosinic:polycytidylic acid Drugs 0.000 claims description 14
- 241000894006 Bacteria Species 0.000 claims description 13
- 241000124008 Mammalia Species 0.000 claims description 13
- 230000003053 immunization Effects 0.000 claims description 13
- 102000004127 Cytokines Human genes 0.000 claims description 12
- 108090000695 Cytokines Proteins 0.000 claims description 12
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims description 12
- 230000001580 bacterial effect Effects 0.000 claims description 12
- 230000001939 inductive effect Effects 0.000 claims description 12
- 241001534160 Escherichia virus Qbeta Species 0.000 claims description 10
- 241000712079 Measles morbillivirus Species 0.000 claims description 10
- 241000702670 Rotavirus Species 0.000 claims description 10
- 102000002689 Toll-like receptor Human genes 0.000 claims description 9
- 108020000411 Toll-like receptor Proteins 0.000 claims description 9
- 239000002158 endotoxin Substances 0.000 claims description 9
- 229920006008 lipopolysaccharide Polymers 0.000 claims description 9
- 108010083644 Ribonucleases Proteins 0.000 claims description 8
- 102000006382 Ribonucleases Human genes 0.000 claims description 8
- 101710197658 Capsid protein VP1 Proteins 0.000 claims description 7
- 241000710198 Foot-and-mouth disease virus Species 0.000 claims description 7
- 241000714209 Norwalk virus Species 0.000 claims description 7
- 101710118046 RNA-directed RNA polymerase Proteins 0.000 claims description 7
- 101710108545 Viral protein 1 Proteins 0.000 claims description 7
- 230000036755 cellular response Effects 0.000 claims description 7
- 230000037452 priming Effects 0.000 claims description 7
- -1 zinc (Zn) ions Chemical class 0.000 claims description 7
- 241000709738 Enterobacteria phage fr Species 0.000 claims description 6
- 241000701806 Human papillomavirus Species 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 6
- 239000013566 allergen Substances 0.000 claims description 6
- ZPUCINDJVBIVPJ-LJISPDSOSA-N cocaine Chemical compound O([C@H]1C[C@@H]2CC[C@@H](N2C)[C@H]1C(=O)OC)C(=O)C1=CC=CC=C1 ZPUCINDJVBIVPJ-LJISPDSOSA-N 0.000 claims description 6
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 claims description 5
- 239000004475 Arginine Substances 0.000 claims description 5
- 230000004568 DNA-binding Effects 0.000 claims description 5
- 241000709737 Enterobacteria phage GA Species 0.000 claims description 5
- 241000709747 Enterobacteria phage R17 Species 0.000 claims description 5
- 241000709743 Enterobacteria phage SP Species 0.000 claims description 5
- 241000709744 Enterobacterio phage MS2 Species 0.000 claims description 5
- 230000004570 RNA-binding Effects 0.000 claims description 5
- ODKSFYDXXFIFQN-UHFFFAOYSA-N arginine Natural products OC(=O)C(N)CCCNC(N)=N ODKSFYDXXFIFQN-UHFFFAOYSA-N 0.000 claims description 5
- 150000001720 carbohydrates Chemical class 0.000 claims description 5
- 235000014633 carbohydrates Nutrition 0.000 claims description 5
- 201000001441 melanoma Diseases 0.000 claims description 5
- 229960002715 nicotine Drugs 0.000 claims description 5
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 claims description 5
- RHKWIGHJGOEUSM-UHFFFAOYSA-N 3h-imidazo[4,5-h]quinoline Chemical class C1=CN=C2C(N=CN3)=C3C=CC2=C1 RHKWIGHJGOEUSM-UHFFFAOYSA-N 0.000 claims description 4
- 241001672158 Acinetobacter phage AP205 Species 0.000 claims description 4
- 241001278075 Enterobacteria phage MX1 Species 0.000 claims description 4
- 241001278054 Enterobacteria phage NL95 Species 0.000 claims description 4
- 241000709739 Enterobacteria phage f2 Species 0.000 claims description 4
- 241000709749 Pseudomonas phage PP7 Species 0.000 claims description 4
- 150000007513 acids Chemical class 0.000 claims description 4
- 239000003085 diluting agent Substances 0.000 claims description 4
- 239000005556 hormone Substances 0.000 claims description 4
- 229940088597 hormone Drugs 0.000 claims description 4
- 229910021645 metal ion Inorganic materials 0.000 claims description 4
- MYWUZJCMWCOHBA-VIFPVBQESA-N methamphetamine Chemical compound CN[C@@H](C)CC1=CC=CC=C1 MYWUZJCMWCOHBA-VIFPVBQESA-N 0.000 claims description 4
- 244000045947 parasite Species 0.000 claims description 4
- 241001261579 Enterobacteria phage M11 Species 0.000 claims description 3
- GVGLGOZIDCSQPN-PVHGPHFFSA-N Heroin Chemical compound O([C@H]1[C@H](C=C[C@H]23)OC(C)=O)C4=C5[C@@]12CCN(C)[C@@H]3CC5=CC=C4OC(C)=O GVGLGOZIDCSQPN-PVHGPHFFSA-N 0.000 claims description 3
- 102000029797 Prion Human genes 0.000 claims description 3
- 108091000054 Prion Proteins 0.000 claims description 3
- 229960003920 cocaine Drugs 0.000 claims description 3
- 229960002069 diamorphine Drugs 0.000 claims description 3
- 210000001165 lymph node Anatomy 0.000 claims description 3
- 239000000546 pharmaceutical excipient Substances 0.000 claims description 3
- 230000028327 secretion Effects 0.000 claims description 3
- 239000003270 steroid hormone Substances 0.000 claims description 3
- 229940031689 heterologous vaccine Drugs 0.000 claims 8
- 108010041986 DNA Vaccines Proteins 0.000 claims 4
- 229940021995 DNA vaccine Drugs 0.000 claims 4
- 101000578784 Homo sapiens Melanoma antigen recognized by T-cells 1 Proteins 0.000 claims 4
- 102100028389 Melanoma antigen recognized by T-cells 1 Human genes 0.000 claims 4
- OROGSEYTTFOCAN-DNJOTXNNSA-N codeine Chemical compound C([C@H]1[C@H](N(CC[C@@]112)C)C3)=C[C@H](O)[C@@H]1OC1=C2C3=CC=C1OC OROGSEYTTFOCAN-DNJOTXNNSA-N 0.000 claims 4
- RHCSKNNOAZULRK-UHFFFAOYSA-N mescaline Chemical compound COC1=CC(CCN)=CC(OC)=C1OC RHCSKNNOAZULRK-UHFFFAOYSA-N 0.000 claims 4
- BQJCRHHNABKAKU-KBQPJGBKSA-N morphine Chemical compound O([C@H]1[C@H](C=C[C@H]23)O)C4=C5[C@@]12CCN(C)[C@@H]3CC5=CC=C4O BQJCRHHNABKAKU-KBQPJGBKSA-N 0.000 claims 4
- KWTSXDURSIMDCE-QMMMGPOBSA-N (S)-amphetamine Chemical compound C[C@H](N)CC1=CC=CC=C1 KWTSXDURSIMDCE-QMMMGPOBSA-N 0.000 claims 2
- SHXWCVYOXRDMCX-UHFFFAOYSA-N 3,4-methylenedioxymethamphetamine Chemical compound CNC(C)CC1=CC=C2OCOC2=C1 SHXWCVYOXRDMCX-UHFFFAOYSA-N 0.000 claims 2
- 102100024217 CAMPATH-1 antigen Human genes 0.000 claims 2
- 108010065524 CD52 Antigen Proteins 0.000 claims 2
- 102100025064 Cellular tumor antigen p53 Human genes 0.000 claims 2
- 102100032768 Complement receptor type 2 Human genes 0.000 claims 2
- 101150029707 ERBB2 gene Proteins 0.000 claims 2
- 101000941929 Homo sapiens Complement receptor type 2 Proteins 0.000 claims 2
- 101000767631 Human papillomavirus type 16 Protein E7 Proteins 0.000 claims 2
- DUGOZIWVEXMGBE-UHFFFAOYSA-N Methylphenidate Chemical compound C=1C=CC=CC=1C(C(=O)OC)C1CCCCN1 DUGOZIWVEXMGBE-UHFFFAOYSA-N 0.000 claims 2
- 229940124939 Pox vaccine Drugs 0.000 claims 2
- QVDSEJDULKLHCG-UHFFFAOYSA-N Psilocybine Natural products C1=CC(OP(O)(O)=O)=C2C(CCN(C)C)=CNC2=C1 QVDSEJDULKLHCG-UHFFFAOYSA-N 0.000 claims 2
- CYQFCXCEBYINGO-UHFFFAOYSA-N THC Natural products C1=C(C)CCC2C(C)(C)OC3=CC(CCCCC)=CC(O)=C3C21 CYQFCXCEBYINGO-UHFFFAOYSA-N 0.000 claims 2
- 102000003425 Tyrosinase Human genes 0.000 claims 2
- 108060008724 Tyrosinase Proteins 0.000 claims 2
- 229940025084 amphetamine Drugs 0.000 claims 2
- 229960004126 codeine Drugs 0.000 claims 2
- 239000010949 copper Substances 0.000 claims 2
- CYQFCXCEBYINGO-IAGOWNOFSA-N delta1-THC Chemical compound C1=C(C)CC[C@H]2C(C)(C)OC3=CC(CCCCC)=CC(O)=C3[C@@H]21 CYQFCXCEBYINGO-IAGOWNOFSA-N 0.000 claims 2
- 229960004242 dronabinol Drugs 0.000 claims 2
- PJMPHNIQZUBGLI-UHFFFAOYSA-N fentanyl Chemical compound C=1C=CC=CC=1N(C(=O)CC)C(CC1)CCN1CCC1=CC=CC=C1 PJMPHNIQZUBGLI-UHFFFAOYSA-N 0.000 claims 2
- 229960002428 fentanyl Drugs 0.000 claims 2
- OROGSEYTTFOCAN-UHFFFAOYSA-N hydrocodone Natural products C1C(N(CCC234)C)C2C=CC(O)C3OC2=C4C1=CC=C2OC OROGSEYTTFOCAN-UHFFFAOYSA-N 0.000 claims 2
- 150000002500 ions Chemical class 0.000 claims 2
- 229960001252 methamphetamine Drugs 0.000 claims 2
- 229960001344 methylphenidate Drugs 0.000 claims 2
- QKTAAWLCLHMUTJ-UHFFFAOYSA-N psilocybin Chemical compound C1C=CC(OP(O)(O)=O)=C2C(CCN(C)C)=CN=C21 QKTAAWLCLHMUTJ-UHFFFAOYSA-N 0.000 claims 2
- 229960004854 viral vaccine Drugs 0.000 claims 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- 210000000447 Th1 cell Anatomy 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 230000003301 hydrolyzing effect Effects 0.000 claims 1
- 230000002163 immunogen Effects 0.000 abstract description 17
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 13
- 201000010099 disease Diseases 0.000 abstract description 12
- 238000002255 vaccination Methods 0.000 abstract description 12
- 230000001684 chronic effect Effects 0.000 abstract description 6
- 206010020751 Hypersensitivity Diseases 0.000 abstract description 4
- 230000007815 allergy Effects 0.000 abstract description 4
- 230000000069 prophylactic effect Effects 0.000 abstract description 4
- 230000001225 therapeutic effect Effects 0.000 abstract description 4
- 101710125418 Major capsid protein Proteins 0.000 description 122
- 101710094648 Coat protein Proteins 0.000 description 118
- 101710141454 Nucleoprotein Proteins 0.000 description 118
- 101710083689 Probable capsid protein Proteins 0.000 description 118
- 102100021181 Golgi phosphoprotein 3 Human genes 0.000 description 114
- 235000018102 proteins Nutrition 0.000 description 102
- 108091032973 (ribonucleotides)n+m Proteins 0.000 description 80
- 235000001014 amino acid Nutrition 0.000 description 79
- 229940024606 amino acid Drugs 0.000 description 79
- 210000000234 capsid Anatomy 0.000 description 77
- 150000001413 amino acids Chemical class 0.000 description 52
- 125000003275 alpha amino acid group Chemical group 0.000 description 42
- 125000003588 lysine group Chemical group [H]N([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])(N([H])[H])C(*)=O 0.000 description 39
- 125000000151 cysteine group Chemical group N[C@@H](CS)C(=O)* 0.000 description 35
- 208000015181 infectious disease Diseases 0.000 description 31
- 230000004927 fusion Effects 0.000 description 30
- 210000004443 dendritic cell Anatomy 0.000 description 26
- 238000005859 coupling reaction Methods 0.000 description 24
- 239000013256 coordination polymer Substances 0.000 description 23
- 238000003780 insertion Methods 0.000 description 23
- 230000037431 insertion Effects 0.000 description 23
- 239000004971 Cross linker Substances 0.000 description 22
- 210000004899 c-terminal region Anatomy 0.000 description 22
- 102000037865 fusion proteins Human genes 0.000 description 22
- 108020001507 fusion proteins Proteins 0.000 description 22
- 125000000539 amino acid group Chemical group 0.000 description 21
- 230000008878 coupling Effects 0.000 description 20
- 238000010168 coupling process Methods 0.000 description 20
- 210000001744 T-lymphocyte Anatomy 0.000 description 19
- 230000003252 repetitive effect Effects 0.000 description 19
- 230000004913 activation Effects 0.000 description 18
- 239000003795 chemical substances by application Substances 0.000 description 16
- 239000013598 vector Substances 0.000 description 16
- 241000712899 Lymphocytic choriomeningitis mammarenavirus Species 0.000 description 15
- 230000029087 digestion Effects 0.000 description 15
- 208000002672 hepatitis B Diseases 0.000 description 15
- 238000012217 deletion Methods 0.000 description 14
- 230000037430 deletion Effects 0.000 description 14
- 230000002458 infectious effect Effects 0.000 description 14
- 239000003446 ligand Substances 0.000 description 14
- 241000588724 Escherichia coli Species 0.000 description 13
- 241000699670 Mus sp. Species 0.000 description 13
- 238000003491 array Methods 0.000 description 13
- 230000003993 interaction Effects 0.000 description 13
- 238000006467 substitution reaction Methods 0.000 description 13
- 241000271566 Aves Species 0.000 description 12
- 238000004458 analytical method Methods 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000011282 treatment Methods 0.000 description 12
- 241001505332 Polyomavirus sp. Species 0.000 description 11
- 238000000246 agarose gel electrophoresis Methods 0.000 description 11
- 238000000502 dialysis Methods 0.000 description 11
- 238000011534 incubation Methods 0.000 description 11
- 244000005700 microbiome Species 0.000 description 11
- 244000052769 pathogen Species 0.000 description 11
- 241000283690 Bos taurus Species 0.000 description 10
- 102100026894 Lymphotoxin-beta Human genes 0.000 description 10
- 101710107921 Secreted protein BARF1 Proteins 0.000 description 10
- 230000001717 pathogenic effect Effects 0.000 description 10
- 102100034540 Adenomatous polyposis coli protein Human genes 0.000 description 9
- 208000035473 Communicable disease Diseases 0.000 description 9
- 101000924577 Homo sapiens Adenomatous polyposis coli protein Proteins 0.000 description 9
- 201000011510 cancer Diseases 0.000 description 9
- 239000007771 core particle Substances 0.000 description 9
- ZMMJGEGLRURXTF-UHFFFAOYSA-N ethidium bromide Chemical compound [Br-].C12=CC(N)=CC=C2C2=CC=C(N)C=C2[N+](CC)=C1C1=CC=CC=C1 ZMMJGEGLRURXTF-UHFFFAOYSA-N 0.000 description 9
- 229960005542 ethidium bromide Drugs 0.000 description 9
- 210000000987 immune system Anatomy 0.000 description 9
- 238000002415 sodium dodecyl sulfate polyacrylamide gel electrophoresis Methods 0.000 description 9
- 102000002067 Protein Subunits Human genes 0.000 description 8
- 108091008874 T cell receptors Proteins 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 8
- 230000006870 function Effects 0.000 description 8
- 210000005007 innate immune system Anatomy 0.000 description 8
- 210000004698 lymphocyte Anatomy 0.000 description 8
- 230000035800 maturation Effects 0.000 description 8
- 229930182817 methionine Natural products 0.000 description 8
- 239000002243 precursor Substances 0.000 description 8
- 238000000746 purification Methods 0.000 description 8
- 102000040650 (ribonucleotides)n+m Human genes 0.000 description 7
- QFVHZQCOUORWEI-UHFFFAOYSA-N 4-[(4-anilino-5-sulfonaphthalen-1-yl)diazenyl]-5-hydroxynaphthalene-2,7-disulfonic acid Chemical compound C=12C(O)=CC(S(O)(=O)=O)=CC2=CC(S(O)(=O)=O)=CC=1N=NC(C1=CC=CC(=C11)S(O)(=O)=O)=CC=C1NC1=CC=CC=C1 QFVHZQCOUORWEI-UHFFFAOYSA-N 0.000 description 7
- 108010029697 CD40 Ligand Proteins 0.000 description 7
- 101150013553 CD40 gene Proteins 0.000 description 7
- 102100032937 CD40 ligand Human genes 0.000 description 7
- 108090000565 Capsid Proteins Proteins 0.000 description 7
- 102100023321 Ceruloplasmin Human genes 0.000 description 7
- 241000709661 Enterovirus Species 0.000 description 7
- 241000282326 Felis catus Species 0.000 description 7
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 7
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 description 7
- 108091028043 Nucleic acid sequence Proteins 0.000 description 7
- 102000016266 T-Cell Antigen Receptors Human genes 0.000 description 7
- 102100040245 Tumor necrosis factor receptor superfamily member 5 Human genes 0.000 description 7
- 241000251539 Vertebrata <Metazoa> Species 0.000 description 7
- 235000009697 arginine Nutrition 0.000 description 7
- 239000000872 buffer Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- 239000012636 effector Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000002523 gelfiltration Methods 0.000 description 7
- 230000006698 induction Effects 0.000 description 7
- 206010022000 influenza Diseases 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 125000001360 methionine group Chemical group N[C@@H](CCSC)C(=O)* 0.000 description 7
- 238000010186 staining Methods 0.000 description 7
- 241000701447 unidentified baculovirus Species 0.000 description 7
- 239000004471 Glycine Substances 0.000 description 6
- 241000725303 Human immunodeficiency virus Species 0.000 description 6
- XUJNEKJLAYXESH-REOHCLBHSA-N L-Cysteine Chemical group SC[C@H](N)C(O)=O XUJNEKJLAYXESH-REOHCLBHSA-N 0.000 description 6
- 241001631646 Papillomaviridae Species 0.000 description 6
- 241001494479 Pecora Species 0.000 description 6
- 241000711975 Vesicular stomatitis virus Species 0.000 description 6
- 238000013459 approach Methods 0.000 description 6
- 125000000637 arginyl group Chemical class N[C@@H](CCCNC(N)=N)C(=O)* 0.000 description 6
- 238000000635 electron micrograph Methods 0.000 description 6
- 238000001493 electron microscopy Methods 0.000 description 6
- 230000036039 immunity Effects 0.000 description 6
- 238000002649 immunization Methods 0.000 description 6
- 238000001727 in vivo Methods 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- 229940046166 oligodeoxynucleotide Drugs 0.000 description 6
- 230000003389 potentiating effect Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 102000005962 receptors Human genes 0.000 description 6
- 108020003175 receptors Proteins 0.000 description 6
- 238000001338 self-assembly Methods 0.000 description 6
- 241000894007 species Species 0.000 description 6
- 231100000331 toxic Toxicity 0.000 description 6
- 230000002588 toxic effect Effects 0.000 description 6
- 241000712461 unidentified influenza virus Species 0.000 description 6
- 229920000936 Agarose Polymers 0.000 description 5
- 241000388186 Deltapapillomavirus 4 Species 0.000 description 5
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 5
- 241000701081 Equid alphaherpesvirus 1 Species 0.000 description 5
- 241000282412 Homo Species 0.000 description 5
- 108060003951 Immunoglobulin Proteins 0.000 description 5
- 108010065805 Interleukin-12 Proteins 0.000 description 5
- 108010001267 Protein Subunits Proteins 0.000 description 5
- 241000710960 Sindbis virus Species 0.000 description 5
- 210000005006 adaptive immune system Anatomy 0.000 description 5
- 210000000612 antigen-presenting cell Anatomy 0.000 description 5
- 239000003814 drug Substances 0.000 description 5
- 230000008030 elimination Effects 0.000 description 5
- 238000003379 elimination reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 125000000524 functional group Chemical group 0.000 description 5
- 230000007062 hydrolysis Effects 0.000 description 5
- 238000006460 hydrolysis reaction Methods 0.000 description 5
- 102000018358 immunoglobulin Human genes 0.000 description 5
- 230000015788 innate immune response Effects 0.000 description 5
- 210000002540 macrophage Anatomy 0.000 description 5
- 239000003550 marker Substances 0.000 description 5
- 230000001404 mediated effect Effects 0.000 description 5
- 238000013508 migration Methods 0.000 description 5
- 230000005012 migration Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- 230000003362 replicative effect Effects 0.000 description 5
- 230000000638 stimulation Effects 0.000 description 5
- 125000003396 thiol group Chemical group [H]S* 0.000 description 5
- YBJHBAHKTGYVGT-ZKWXMUAHSA-N (+)-Biotin Chemical compound N1C(=O)N[C@@H]2[C@H](CCCCC(=O)O)SC[C@@H]21 YBJHBAHKTGYVGT-ZKWXMUAHSA-N 0.000 description 4
- 108020000946 Bacterial DNA Proteins 0.000 description 4
- 241001118702 Border disease virus Species 0.000 description 4
- 241000710780 Bovine viral diarrhea virus 1 Species 0.000 description 4
- 241000725585 Chicken anemia virus Species 0.000 description 4
- 241000710777 Classical swine fever virus Species 0.000 description 4
- 241000712471 Dhori virus Species 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 241000283086 Equidae Species 0.000 description 4
- 241000714165 Feline leukemia virus Species 0.000 description 4
- 241000233866 Fungi Species 0.000 description 4
- 108091054437 MHC class I family Proteins 0.000 description 4
- 241000710778 Pestivirus Species 0.000 description 4
- 241000714474 Rous sarcoma virus Species 0.000 description 4
- 230000024932 T cell mediated immunity Effects 0.000 description 4
- 108020005038 Terminator Codon Proteins 0.000 description 4
- FPIPGXGPPPQFEQ-OVSJKPMPSA-N all-trans-retinol Chemical compound OC\C=C(/C)\C=C\C=C(/C)\C=C\C1=C(C)CCCC1(C)C FPIPGXGPPPQFEQ-OVSJKPMPSA-N 0.000 description 4
- 230000005784 autoimmunity Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000001413 cellular effect Effects 0.000 description 4
- 230000000139 costimulatory effect Effects 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 4
- 238000001212 derivatisation Methods 0.000 description 4
- 229940079593 drug Drugs 0.000 description 4
- 230000028996 humoral immune response Effects 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 230000005847 immunogenicity Effects 0.000 description 4
- 230000001976 improved effect Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- YBYRMVIVWMBXKQ-UHFFFAOYSA-N phenylmethanesulfonyl fluoride Chemical compound FS(=O)(=O)CC1=CC=CC=C1 YBYRMVIVWMBXKQ-UHFFFAOYSA-N 0.000 description 4
- 102000040430 polynucleotide Human genes 0.000 description 4
- 108091033319 polynucleotide Proteins 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 210000003705 ribosome Anatomy 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 229930000044 secondary metabolite Natural products 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000002560 therapeutic procedure Methods 0.000 description 4
- 238000011830 transgenic mouse model Methods 0.000 description 4
- 210000004881 tumor cell Anatomy 0.000 description 4
- 241000701161 unidentified adenovirus Species 0.000 description 4
- 230000009385 viral infection Effects 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 3
- 208000023275 Autoimmune disease Diseases 0.000 description 3
- 101150083464 CP gene Proteins 0.000 description 3
- 241000283707 Capra Species 0.000 description 3
- 108091026890 Coding region Proteins 0.000 description 3
- 241000701022 Cytomegalovirus Species 0.000 description 3
- 241000450599 DNA viruses Species 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- 241000991587 Enterovirus C Species 0.000 description 3
- 241001598169 Equid alphaherpesvirus 3 Species 0.000 description 3
- 241000725578 Equid gammaherpesvirus 2 Species 0.000 description 3
- 241000230501 Equine herpesvirus sp. Species 0.000 description 3
- 241000283073 Equus caballus Species 0.000 description 3
- 241000287828 Gallus gallus Species 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 241000238631 Hexapoda Species 0.000 description 3
- ROHFNLRQFUQHCH-UHFFFAOYSA-N Leucine Natural products CC(C)CC(N)C(O)=O ROHFNLRQFUQHCH-UHFFFAOYSA-N 0.000 description 3
- 239000004472 Lysine Substances 0.000 description 3
- 241000711386 Mumps virus Species 0.000 description 3
- 241000699666 Mus <mouse, genus> Species 0.000 description 3
- 241000699660 Mus musculus Species 0.000 description 3
- 241000712464 Orthomyxoviridae Species 0.000 description 3
- 241000150218 Orthonairovirus Species 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 241000711504 Paramyxoviridae Species 0.000 description 3
- 208000002606 Paramyxoviridae Infections Diseases 0.000 description 3
- 241000286209 Phasianidae Species 0.000 description 3
- 241000713137 Phlebovirus Species 0.000 description 3
- 241000125945 Protoparvovirus Species 0.000 description 3
- 241000725643 Respiratory syncytial virus Species 0.000 description 3
- 241000710799 Rubella virus Species 0.000 description 3
- 229920002684 Sepharose Polymers 0.000 description 3
- 241000194017 Streptococcus Species 0.000 description 3
- 241000282887 Suidae Species 0.000 description 3
- PZBFGYYEXUXCOF-UHFFFAOYSA-N TCEP Chemical compound OC(=O)CCP(CCC(O)=O)CCC(O)=O PZBFGYYEXUXCOF-UHFFFAOYSA-N 0.000 description 3
- 241000710924 Togaviridae Species 0.000 description 3
- 108010067390 Viral Proteins Proteins 0.000 description 3
- 208000036142 Viral infection Diseases 0.000 description 3
- 230000004075 alteration Effects 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 230000014102 antigen processing and presentation of exogenous peptide antigen via MHC class I Effects 0.000 description 3
- 210000001185 bone marrow Anatomy 0.000 description 3
- 235000013330 chicken meat Nutrition 0.000 description 3
- 238000010367 cloning Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 235000018417 cysteine Nutrition 0.000 description 3
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 description 3
- OPTASPLRGRRNAP-UHFFFAOYSA-N cytosine Chemical class NC=1C=CNC(=O)N=1 OPTASPLRGRRNAP-UHFFFAOYSA-N 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 241001493065 dsRNA viruses Species 0.000 description 3
- 230000002255 enzymatic effect Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 235000019688 fish Nutrition 0.000 description 3
- 125000003630 glycyl group Chemical group [H]N([H])C([H])([H])C(*)=O 0.000 description 3
- 230000000951 immunodiffusion Effects 0.000 description 3
- 229940072221 immunoglobulins Drugs 0.000 description 3
- 238000000338 in vitro Methods 0.000 description 3
- 230000002101 lytic effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010369 molecular cloning Methods 0.000 description 3
- 239000013642 negative control Substances 0.000 description 3
- 230000037361 pathway Effects 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 239000002157 polynucleotide Substances 0.000 description 3
- 244000144977 poultry Species 0.000 description 3
- 235000013594 poultry meat Nutrition 0.000 description 3
- 230000035755 proliferation Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 210000000952 spleen Anatomy 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 229920001059 synthetic polymer Polymers 0.000 description 3
- 230000014616 translation Effects 0.000 description 3
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 3
- WCMOHMXWOOBVMZ-UHFFFAOYSA-N (2,5-dioxopyrrolidin-1-yl) 6-[3-(2,5-dioxopyrrol-1-yl)propanoylamino]hexanoate Chemical compound O=C1CCC(=O)N1OC(=O)CCCCCNC(=O)CCN1C(=O)C=CC1=O WCMOHMXWOOBVMZ-UHFFFAOYSA-N 0.000 description 2
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 description 2
- FPIPGXGPPPQFEQ-UHFFFAOYSA-N 13-cis retinol Natural products OCC=C(C)C=CC=C(C)C=CC1=C(C)CCCC1(C)C FPIPGXGPPPQFEQ-UHFFFAOYSA-N 0.000 description 2
- 241000701242 Adenoviridae Species 0.000 description 2
- 241000701386 African swine fever virus Species 0.000 description 2
- 241000710929 Alphavirus Species 0.000 description 2
- 241000272517 Anseriformes Species 0.000 description 2
- 241000712892 Arenaviridae Species 0.000 description 2
- 241000711404 Avian avulavirus 1 Species 0.000 description 2
- 241000714230 Avian leukemia virus Species 0.000 description 2
- 241001227615 Bovine foamy virus Species 0.000 description 2
- 241000714266 Bovine leukemia virus Species 0.000 description 2
- 241000711895 Bovine orthopneumovirus Species 0.000 description 2
- 208000008889 California Encephalitis Diseases 0.000 description 2
- 241000282472 Canis lupus familiaris Species 0.000 description 2
- 241000700199 Cavia porcellus Species 0.000 description 2
- 241000282693 Cercopithecidae Species 0.000 description 2
- 241001502567 Chikungunya virus Species 0.000 description 2
- 108020004705 Codon Proteins 0.000 description 2
- 229940046168 CpG oligodeoxynucleotide Drugs 0.000 description 2
- 241000150230 Crimean-Congo hemorrhagic fever orthonairovirus Species 0.000 description 2
- 241000725619 Dengue virus Species 0.000 description 2
- SHIBSTMRCDJXLN-UHFFFAOYSA-N Digoxigenin Natural products C1CC(C2C(C3(C)CCC(O)CC3CC2)CC2O)(O)C2(C)C1C1=CC(=O)OC1 SHIBSTMRCDJXLN-UHFFFAOYSA-N 0.000 description 2
- 241000255925 Diptera Species 0.000 description 2
- 208000000655 Distemper Diseases 0.000 description 2
- 241001115402 Ebolavirus Species 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 206010014584 Encephalitis california Diseases 0.000 description 2
- 206010066919 Epidemic polyarthritis Diseases 0.000 description 2
- 241000713730 Equine infectious anemia virus Species 0.000 description 2
- 241000713800 Feline immunodeficiency virus Species 0.000 description 2
- 241000714174 Feline sarcoma virus Species 0.000 description 2
- 241000282324 Felis Species 0.000 description 2
- 241000711950 Filoviridae Species 0.000 description 2
- 241000192125 Firmicutes Species 0.000 description 2
- 108010040721 Flagellin Proteins 0.000 description 2
- 101710177291 Gag polyprotein Proteins 0.000 description 2
- 241000713813 Gibbon ape leukemia virus Species 0.000 description 2
- NYHBQMYGNKIUIF-UUOKFMHZSA-N Guanosine Chemical compound C1=NC=2C(=O)NC(N)=NC=2N1[C@@H]1O[C@H](CO)[C@@H](O)[C@H]1O NYHBQMYGNKIUIF-UUOKFMHZSA-N 0.000 description 2
- 241000711549 Hepacivirus C Species 0.000 description 2
- 208000005176 Hepatitis C Diseases 0.000 description 2
- 208000005331 Hepatitis D Diseases 0.000 description 2
- 241000700586 Herpesviridae Species 0.000 description 2
- 102000008949 Histocompatibility Antigens Class I Human genes 0.000 description 2
- 241000713673 Human foamy virus Species 0.000 description 2
- 241000713772 Human immunodeficiency virus 1 Species 0.000 description 2
- 241000713340 Human immunodeficiency virus 2 Species 0.000 description 2
- 241000726041 Human respirovirus 1 Species 0.000 description 2
- 241000714192 Human spumaretrovirus Species 0.000 description 2
- XQFRJNBWHJMXHO-RRKCRQDMSA-N IDUR Chemical compound C1[C@H](O)[C@@H](CO)O[C@H]1N1C(=O)NC(=O)C(I)=C1 XQFRJNBWHJMXHO-RRKCRQDMSA-N 0.000 description 2
- 241000711450 Infectious bronchitis virus Species 0.000 description 2
- 241000712431 Influenza A virus Species 0.000 description 2
- 102000002227 Interferon Type I Human genes 0.000 description 2
- 108010014726 Interferon Type I Proteins 0.000 description 2
- 102000014150 Interferons Human genes 0.000 description 2
- 108010050904 Interferons Proteins 0.000 description 2
- 241000701377 Iridoviridae Species 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 241000710842 Japanese encephalitis virus Species 0.000 description 2
- 241000701646 Kappapapillomavirus 2 Species 0.000 description 2
- 241000710912 Kunjin virus Species 0.000 description 2
- ROHFNLRQFUQHCH-YFKPBYRVSA-N L-leucine Chemical compound CC(C)C[C@H](N)C(O)=O ROHFNLRQFUQHCH-YFKPBYRVSA-N 0.000 description 2
- 201000009908 La Crosse encephalitis Diseases 0.000 description 2
- 241000713666 Lentivirus Species 0.000 description 2
- 102000043129 MHC class I family Human genes 0.000 description 2
- 241000282553 Macaca Species 0.000 description 2
- 241000713821 Mason-Pfizer monkey virus Species 0.000 description 2
- 241000713862 Moloney murine sarcoma virus Species 0.000 description 2
- 241000712045 Morbillivirus Species 0.000 description 2
- 241001529936 Murinae Species 0.000 description 2
- 241000714177 Murine leukemia virus Species 0.000 description 2
- 241000711941 Murine orthopneumovirus Species 0.000 description 2
- 241000711408 Murine respirovirus Species 0.000 description 2
- 241000710908 Murray Valley encephalitis virus Species 0.000 description 2
- 241001457453 Nairobi sheep disease virus Species 0.000 description 2
- 101710163270 Nuclease Proteins 0.000 description 2
- 241000710944 O'nyong-nyong virus Species 0.000 description 2
- 241000725177 Omsk hemorrhagic fever virus Species 0.000 description 2
- 108700026244 Open Reading Frames Proteins 0.000 description 2
- 241000283973 Oryctolagus cuniculus Species 0.000 description 2
- 229930012538 Paclitaxel Natural products 0.000 description 2
- 108091081548 Palindromic sequence Proteins 0.000 description 2
- 241000150350 Peribunyaviridae Species 0.000 description 2
- 241000711902 Pneumovirus Species 0.000 description 2
- 108091036414 Polyinosinic:polycytidylic acid Proteins 0.000 description 2
- 241000710884 Powassan virus Species 0.000 description 2
- 241000700625 Poxviridae Species 0.000 description 2
- 241000288906 Primates Species 0.000 description 2
- 241000711798 Rabies lyssavirus Species 0.000 description 2
- 108020004511 Recombinant DNA Proteins 0.000 description 2
- 241000702247 Reoviridae Species 0.000 description 2
- 241000712909 Reticuloendotheliosis virus Species 0.000 description 2
- 241000713124 Rift Valley fever virus Species 0.000 description 2
- 241000711897 Rinderpest morbillivirus Species 0.000 description 2
- 241000710942 Ross River virus Species 0.000 description 2
- 241000710801 Rubivirus Species 0.000 description 2
- 241001135555 Sandfly fever Sicilian virus Species 0.000 description 2
- 206010039491 Sarcoma Diseases 0.000 description 2
- 241001529934 Simian T-lymphotropic virus 3 Species 0.000 description 2
- 241000713656 Simian foamy virus Species 0.000 description 2
- 241000700584 Simplexvirus Species 0.000 description 2
- 208000001203 Smallpox Diseases 0.000 description 2
- 241000713896 Spleen necrosis virus Species 0.000 description 2
- 206010041660 Splenomegaly Diseases 0.000 description 2
- 241000710888 St. Louis encephalitis virus Species 0.000 description 2
- 108091081024 Start codon Proteins 0.000 description 2
- 108010090804 Streptavidin Proteins 0.000 description 2
- 241000282898 Sus scrofa Species 0.000 description 2
- 241000725681 Swine influenza virus Species 0.000 description 2
- 208000000389 T-cell leukemia Diseases 0.000 description 2
- 208000028530 T-cell lymphoblastic leukemia/lymphoma Diseases 0.000 description 2
- 241000723873 Tobacco mosaic virus Species 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 241000713152 Uukuniemi virus Species 0.000 description 2
- 241000700618 Vaccinia virus Species 0.000 description 2
- 241000710959 Venezuelan equine encephalitis virus Species 0.000 description 2
- 108010003533 Viral Envelope Proteins Proteins 0.000 description 2
- 241000710886 West Nile virus Species 0.000 description 2
- 241000710951 Western equine encephalitis virus Species 0.000 description 2
- 241000714205 Woolly monkey sarcoma virus Species 0.000 description 2
- 241000710772 Yellow fever virus Species 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 108700010877 adenoviridae proteins Proteins 0.000 description 2
- 239000000556 agonist Substances 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 230000000840 anti-viral effect Effects 0.000 description 2
- 230000005875 antibody response Effects 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 229960002685 biotin Drugs 0.000 description 2
- 235000020958 biotin Nutrition 0.000 description 2
- 239000011616 biotin Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000007969 cellular immunity Effects 0.000 description 2
- 238000003776 cleavage reaction Methods 0.000 description 2
- 239000002299 complementary DNA Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000000120 cytopathologic effect Effects 0.000 description 2
- 210000000805 cytoplasm Anatomy 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000007857 degradation product Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 206010012601 diabetes mellitus Diseases 0.000 description 2
- QONQRTHLHBTMGP-UHFFFAOYSA-N digitoxigenin Natural products CC12CCC(C3(CCC(O)CC3CC3)C)C3C11OC1CC2C1=CC(=O)OC1 QONQRTHLHBTMGP-UHFFFAOYSA-N 0.000 description 2
- SHIBSTMRCDJXLN-KCZCNTNESA-N digoxigenin Chemical compound C1([C@@H]2[C@@]3([C@@](CC2)(O)[C@H]2[C@@H]([C@@]4(C)CC[C@H](O)C[C@H]4CC2)C[C@H]3O)C)=CC(=O)OC1 SHIBSTMRCDJXLN-KCZCNTNESA-N 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 239000003937 drug carrier Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 210000003527 eukaryotic cell Anatomy 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000013604 expression vector Substances 0.000 description 2
- 208000005098 feline infectious peritonitis Diseases 0.000 description 2
- GNBHRKFJIUUOQI-UHFFFAOYSA-N fluorescein Chemical compound O1C(=O)C2=CC=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 GNBHRKFJIUUOQI-UHFFFAOYSA-N 0.000 description 2
- 229960002143 fluorescein Drugs 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 238000001502 gel electrophoresis Methods 0.000 description 2
- UYTPUPDQBNUYGX-UHFFFAOYSA-N guanine Chemical compound O=C1NC(N)=NC2=C1N=CN2 UYTPUPDQBNUYGX-UHFFFAOYSA-N 0.000 description 2
- 210000002443 helper t lymphocyte Anatomy 0.000 description 2
- 230000001894 hemadsorption Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 150000003949 imides Chemical class 0.000 description 2
- 210000002865 immune cell Anatomy 0.000 description 2
- 230000016784 immunoglobulin production Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229940079322 interferon Drugs 0.000 description 2
- 238000011005 laboratory method Methods 0.000 description 2
- 150000002632 lipids Chemical class 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 108010026228 mRNA guanylyltransferase Proteins 0.000 description 2
- 201000004792 malaria Diseases 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 229920005615 natural polymer Polymers 0.000 description 2
- 238000006384 oligomerization reaction Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 229960001592 paclitaxel Drugs 0.000 description 2
- 239000004031 partial agonist Substances 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical group [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 230000000770 proinflammatory effect Effects 0.000 description 2
- 238000011321 prophylaxis Methods 0.000 description 2
- 238000001742 protein purification Methods 0.000 description 2
- 230000012743 protein tagging Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000010076 replication Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229960003471 retinol Drugs 0.000 description 2
- 235000020944 retinol Nutrition 0.000 description 2
- 239000011607 retinol Substances 0.000 description 2
- 238000004007 reversed phase HPLC Methods 0.000 description 2
- 230000007017 scission Effects 0.000 description 2
- 125000003607 serino group Chemical group [H]N([H])[C@]([H])(C(=O)[*])C(O[H])([H])[H] 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 238000001542 size-exclusion chromatography Methods 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- ULARYIUTHAWJMU-UHFFFAOYSA-M sodium;1-[4-(2,5-dioxopyrrol-1-yl)butanoyloxy]-2,5-dioxopyrrolidine-3-sulfonate Chemical compound [Na+].O=C1C(S(=O)(=O)[O-])CC(=O)N1OC(=O)CCCN1C(=O)C=CC1=O ULARYIUTHAWJMU-UHFFFAOYSA-M 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000004936 stimulating effect Effects 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- RCINICONZNJXQF-MZXODVADSA-N taxol Chemical compound O([C@@H]1[C@@]2(C[C@@H](C(C)=C(C2(C)C)[C@H](C([C@]2(C)[C@@H](O)C[C@H]3OC[C@]3([C@H]21)OC(C)=O)=O)OC(=O)C)OC(=O)[C@H](O)[C@@H](NC(=O)C=1C=CC=CC=1)C=1C=CC=CC=1)O)C(=O)C1=CC=CC=C1 RCINICONZNJXQF-MZXODVADSA-N 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 201000008827 tuberculosis Diseases 0.000 description 2
- 238000005199 ultracentrifugation Methods 0.000 description 2
- 241001529453 unidentified herpesvirus Species 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000002477 vacuolizing effect Effects 0.000 description 2
- 229940051021 yellow-fever virus Drugs 0.000 description 2
- JWDFQMWEFLOOED-UHFFFAOYSA-N (2,5-dioxopyrrolidin-1-yl) 3-(pyridin-2-yldisulfanyl)propanoate Chemical compound O=C1CCC(=O)N1OC(=O)CCSSC1=CC=CC=N1 JWDFQMWEFLOOED-UHFFFAOYSA-N 0.000 description 1
- DIYPCWKHSODVAP-UHFFFAOYSA-N 1-[3-(2,5-dioxopyrrol-1-yl)benzoyl]oxy-2,5-dioxopyrrolidine-3-sulfonic acid Chemical compound O=C1C(S(=O)(=O)O)CC(=O)N1OC(=O)C1=CC=CC(N2C(C=CC2=O)=O)=C1 DIYPCWKHSODVAP-UHFFFAOYSA-N 0.000 description 1
- CULQNACJHGHAER-UHFFFAOYSA-N 1-[4-[(2-iodoacetyl)amino]benzoyl]oxy-2,5-dioxopyrrolidine-3-sulfonic acid Chemical compound O=C1C(S(=O)(=O)O)CC(=O)N1OC(=O)C1=CC=C(NC(=O)CI)C=C1 CULQNACJHGHAER-UHFFFAOYSA-N 0.000 description 1
- ASNTZYQMIUCEBV-UHFFFAOYSA-N 2,5-dioxo-1-[6-[3-(pyridin-2-yldisulfanyl)propanoylamino]hexanoyloxy]pyrrolidine-3-sulfonic acid Chemical compound O=C1C(S(=O)(=O)O)CC(=O)N1OC(=O)CCCCCNC(=O)CCSSC1=CC=CC=N1 ASNTZYQMIUCEBV-UHFFFAOYSA-N 0.000 description 1
- ASJSAQIRZKANQN-CRCLSJGQSA-N 2-deoxy-D-ribose Chemical compound OC[C@@H](O)[C@@H](O)CC=O ASJSAQIRZKANQN-CRCLSJGQSA-N 0.000 description 1
- GNTFNWAZTKLCRE-UHFFFAOYSA-N 4-amino-4-bromo-1,3-dihydropyrimidin-2-one Chemical compound NC1(Br)NC(=O)NC=C1 GNTFNWAZTKLCRE-UHFFFAOYSA-N 0.000 description 1
- OZFPSOBLQZPIAV-UHFFFAOYSA-N 5-nitro-1h-indole Chemical compound [O-][N+](=O)C1=CC=C2NC=CC2=C1 OZFPSOBLQZPIAV-UHFFFAOYSA-N 0.000 description 1
- 101150008391 A1 gene Proteins 0.000 description 1
- 208000030507 AIDS Diseases 0.000 description 1
- 241001455214 Acinonyx jubatus Species 0.000 description 1
- 101710159080 Aconitate hydratase A Proteins 0.000 description 1
- 101710159078 Aconitate hydratase B Proteins 0.000 description 1
- 241000186046 Actinomyces Species 0.000 description 1
- 241000120516 African horse sickness virus Species 0.000 description 1
- 241001135972 Aleutian mink disease virus Species 0.000 description 1
- 208000004881 Amebiasis Diseases 0.000 description 1
- 206010001980 Amoebiasis Diseases 0.000 description 1
- 102000006306 Antigen Receptors Human genes 0.000 description 1
- 108010083359 Antigen Receptors Proteins 0.000 description 1
- 241000269350 Anura Species 0.000 description 1
- 241000239223 Arachnida Species 0.000 description 1
- 241000701061 Ateline gammaherpesvirus 2 Species 0.000 description 1
- 241000701802 Aviadenovirus Species 0.000 description 1
- 241001213911 Avian retroviruses Species 0.000 description 1
- 108090001008 Avidin Proteins 0.000 description 1
- 241000700663 Avipoxvirus Species 0.000 description 1
- 102000019260 B-Cell Antigen Receptors Human genes 0.000 description 1
- 108010012919 B-Cell Antigen Receptors Proteins 0.000 description 1
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- 208000035143 Bacterial infection Diseases 0.000 description 1
- 241001148536 Bacteroides sp. Species 0.000 description 1
- 241000702628 Birnaviridae Species 0.000 description 1
- 241000228405 Blastomyces dermatitidis Species 0.000 description 1
- 241000120506 Bluetongue virus Species 0.000 description 1
- 241000701083 Bovine alphaherpesvirus 1 Species 0.000 description 1
- 241000701822 Bovine papillomavirus Species 0.000 description 1
- 241000621124 Bovine papular stomatitis virus Species 0.000 description 1
- 241000701922 Bovine parvovirus Species 0.000 description 1
- 241001506128 Bovine rotavirus strain NCDV/G6 Species 0.000 description 1
- 208000003174 Brain Neoplasms Diseases 0.000 description 1
- 206010006187 Breast cancer Diseases 0.000 description 1
- 208000026310 Breast neoplasm Diseases 0.000 description 1
- 241000282836 Camelus dromedarius Species 0.000 description 1
- 241000589994 Campylobacter sp. Species 0.000 description 1
- 241000222122 Candida albicans Species 0.000 description 1
- 241000701931 Canine parvovirus Species 0.000 description 1
- 241000700664 Capripoxvirus Species 0.000 description 1
- 101710169873 Capsid protein G8P Proteins 0.000 description 1
- 201000009030 Carcinoma Diseases 0.000 description 1
- 208000009458 Carcinoma in Situ Diseases 0.000 description 1
- 241000710190 Cardiovirus Species 0.000 description 1
- 206010008342 Cervix carcinoma Diseases 0.000 description 1
- 241000711969 Chandipura virus Species 0.000 description 1
- 201000006082 Chickenpox Diseases 0.000 description 1
- 241000606161 Chlamydia Species 0.000 description 1
- 241000606153 Chlamydia trachomatis Species 0.000 description 1
- 208000006332 Choriocarcinoma Diseases 0.000 description 1
- 208000017667 Chronic Disease Diseases 0.000 description 1
- 101710117490 Circumsporozoite protein Proteins 0.000 description 1
- 241000193403 Clostridium Species 0.000 description 1
- 241000193449 Clostridium tetani Species 0.000 description 1
- 241000223205 Coccidioides immitis Species 0.000 description 1
- 206010009944 Colon cancer Diseases 0.000 description 1
- 241000204955 Colorado tick fever virus Species 0.000 description 1
- 241001275954 Cortinarius caperatus Species 0.000 description 1
- 241000186227 Corynebacterium diphtheriae Species 0.000 description 1
- 241000186249 Corynebacterium sp. Species 0.000 description 1
- 241000723655 Cowpea mosaic virus Species 0.000 description 1
- 241000709687 Coxsackievirus Species 0.000 description 1
- 208000020406 Creutzfeldt Jacob disease Diseases 0.000 description 1
- 208000003407 Creutzfeldt-Jakob Syndrome Diseases 0.000 description 1
- 208000010859 Creutzfeldt-Jakob disease Diseases 0.000 description 1
- MIKUYHXYGGJMLM-GIMIYPNGSA-N Crotonoside Natural products C1=NC2=C(N)NC(=O)N=C2N1[C@H]1O[C@@H](CO)[C@H](O)[C@@H]1O MIKUYHXYGGJMLM-GIMIYPNGSA-N 0.000 description 1
- 201000007336 Cryptococcosis Diseases 0.000 description 1
- 241000221204 Cryptococcus neoformans Species 0.000 description 1
- NYHBQMYGNKIUIF-UHFFFAOYSA-N D-guanosine Natural products C1=2NC(N)=NC(=O)C=2N=CN1C1OC(CO)C(O)C1O NYHBQMYGNKIUIF-UHFFFAOYSA-N 0.000 description 1
- 241000710829 Dengue virus group Species 0.000 description 1
- 108010053770 Deoxyribonucleases Proteins 0.000 description 1
- 102000016911 Deoxyribonucleases Human genes 0.000 description 1
- 241000702421 Dependoparvovirus Species 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 241000710945 Eastern equine encephalitis virus Species 0.000 description 1
- 241001466953 Echovirus Species 0.000 description 1
- 208000006586 Ectromelia Diseases 0.000 description 1
- 241000725630 Ectromelia virus Species 0.000 description 1
- 206010014612 Encephalitis viral Diseases 0.000 description 1
- 241000710188 Encephalomyocarditis virus Species 0.000 description 1
- 102100027723 Endogenous retrovirus group K member 6 Rec protein Human genes 0.000 description 1
- 206010014733 Endometrial cancer Diseases 0.000 description 1
- 206010014759 Endometrial neoplasm Diseases 0.000 description 1
- 102000004533 Endonucleases Human genes 0.000 description 1
- 108010042407 Endonucleases Proteins 0.000 description 1
- 108010067770 Endopeptidase K Proteins 0.000 description 1
- 241000194032 Enterococcus faecalis Species 0.000 description 1
- 241001495410 Enterococcus sp. Species 0.000 description 1
- 241000988559 Enterovirus A Species 0.000 description 1
- 241000709691 Enterovirus E Species 0.000 description 1
- 101710091045 Envelope protein Proteins 0.000 description 1
- 241000701089 Equid alphaherpesvirus 4 Species 0.000 description 1
- 208000000832 Equine Encephalomyelitis Diseases 0.000 description 1
- 241000186810 Erysipelothrix rhusiopathiae Species 0.000 description 1
- 208000000461 Esophageal Neoplasms Diseases 0.000 description 1
- 108060002716 Exonuclease Proteins 0.000 description 1
- 206010063827 Extramedullary haemopoiesis Diseases 0.000 description 1
- 241000725579 Feline coronavirus Species 0.000 description 1
- 241000701915 Feline panleukopenia virus Species 0.000 description 1
- 241001280522 Feline picornavirus Species 0.000 description 1
- 241000724791 Filamentous phage Species 0.000 description 1
- 241000710781 Flaviviridae Species 0.000 description 1
- 241000710831 Flavivirus Species 0.000 description 1
- 241000723754 Flock house virus Species 0.000 description 1
- 208000007212 Foot-and-Mouth Disease Diseases 0.000 description 1
- 208000000666 Fowlpox Diseases 0.000 description 1
- 241000605986 Fusobacterium nucleatum Species 0.000 description 1
- 241000701063 Gallid alphaherpesvirus 1 Species 0.000 description 1
- 241000701047 Gallid alphaherpesvirus 2 Species 0.000 description 1
- 208000005577 Gastroenteritis Diseases 0.000 description 1
- 241000608297 Getah virus Species 0.000 description 1
- YLJHCWNDBKKOEB-IHRRRGAJSA-N Glu-Glu-Phe Chemical compound [H]N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC1=CC=CC=C1)C(O)=O YLJHCWNDBKKOEB-IHRRRGAJSA-N 0.000 description 1
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- 102000003886 Glycoproteins Human genes 0.000 description 1
- 108090000288 Glycoproteins Proteins 0.000 description 1
- 241000856850 Goose coronavirus Species 0.000 description 1
- 241001506229 Goose reovirus Species 0.000 description 1
- 108010017213 Granulocyte-Macrophage Colony-Stimulating Factor Proteins 0.000 description 1
- 102100039620 Granulocyte-macrophage colony-stimulating factor Human genes 0.000 description 1
- 208000031886 HIV Infections Diseases 0.000 description 1
- 241000606768 Haemophilus influenzae Species 0.000 description 1
- 206010061192 Haemorrhagic fever Diseases 0.000 description 1
- 241000150562 Hantaan orthohantavirus Species 0.000 description 1
- 208000030836 Hashimoto thyroiditis Diseases 0.000 description 1
- 241000590002 Helicobacter pylori Species 0.000 description 1
- 101710154606 Hemagglutinin Proteins 0.000 description 1
- 241000700739 Hepadnaviridae Species 0.000 description 1
- 206010019773 Hepatitis G Diseases 0.000 description 1
- 206010019799 Hepatitis viral Diseases 0.000 description 1
- 241000709721 Hepatovirus A Species 0.000 description 1
- 208000009889 Herpes Simplex Diseases 0.000 description 1
- 208000007514 Herpes zoster Diseases 0.000 description 1
- 241000701020 Herpesvirus sylvilagus Species 0.000 description 1
- 101710121996 Hexon protein p72 Proteins 0.000 description 1
- 241000228404 Histoplasma capsulatum Species 0.000 description 1
- 241001272567 Hominoidea Species 0.000 description 1
- 101000864780 Homo sapiens Pulmonary surfactant-associated protein A1 Proteins 0.000 description 1
- 101000914514 Homo sapiens T-cell-specific surface glycoprotein CD28 Proteins 0.000 description 1
- 101000763579 Homo sapiens Toll-like receptor 1 Proteins 0.000 description 1
- 101000763537 Homo sapiens Toll-like receptor 10 Proteins 0.000 description 1
- 101000831567 Homo sapiens Toll-like receptor 2 Proteins 0.000 description 1
- 101000831496 Homo sapiens Toll-like receptor 3 Proteins 0.000 description 1
- 101000669447 Homo sapiens Toll-like receptor 4 Proteins 0.000 description 1
- 101000669460 Homo sapiens Toll-like receptor 5 Proteins 0.000 description 1
- 101000669406 Homo sapiens Toll-like receptor 6 Proteins 0.000 description 1
- 101000669402 Homo sapiens Toll-like receptor 7 Proteins 0.000 description 1
- 101000800483 Homo sapiens Toll-like receptor 8 Proteins 0.000 description 1
- 101000611183 Homo sapiens Tumor necrosis factor Proteins 0.000 description 1
- 241000714260 Human T-lymphotropic virus 1 Species 0.000 description 1
- 241000701085 Human alphaherpesvirus 3 Species 0.000 description 1
- 241000701024 Human betaherpesvirus 5 Species 0.000 description 1
- 244000309469 Human enteric coronavirus Species 0.000 description 1
- 241000701044 Human gammaherpesvirus 4 Species 0.000 description 1
- 241000701828 Human papillomavirus type 11 Species 0.000 description 1
- 241000341655 Human papillomavirus type 16 Species 0.000 description 1
- 241000709701 Human poliovirus 1 Species 0.000 description 1
- 241000430519 Human rhinovirus sp. Species 0.000 description 1
- 241000617996 Human rotavirus Species 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 206010061598 Immunodeficiency Diseases 0.000 description 1
- 208000029462 Immunodeficiency disease Diseases 0.000 description 1
- 102000001706 Immunoglobulin Fab Fragments Human genes 0.000 description 1
- 108010054477 Immunoglobulin Fab Fragments Proteins 0.000 description 1
- 108010021625 Immunoglobulin Fragments Proteins 0.000 description 1
- 102000008394 Immunoglobulin Fragments Human genes 0.000 description 1
- 208000004467 Infectious Canine Hepatitis Diseases 0.000 description 1
- UGQMRVRMYYASKQ-KQYNXXCUSA-N Inosine Chemical compound O[C@@H]1[C@H](O)[C@@H](CO)O[C@H]1N1C2=NC=NC(O)=C2N=C1 UGQMRVRMYYASKQ-KQYNXXCUSA-N 0.000 description 1
- 102100025390 Integrin beta-2 Human genes 0.000 description 1
- 102000006992 Interferon-alpha Human genes 0.000 description 1
- 108010047761 Interferon-alpha Proteins 0.000 description 1
- 102000003996 Interferon-beta Human genes 0.000 description 1
- 108090000467 Interferon-beta Proteins 0.000 description 1
- 108010002350 Interleukin-2 Proteins 0.000 description 1
- 241000701460 JC polyomavirus Species 0.000 description 1
- 241000120527 Kemerovo virus Species 0.000 description 1
- 208000008839 Kidney Neoplasms Diseases 0.000 description 1
- 241000588915 Klebsiella aerogenes Species 0.000 description 1
- 241000588747 Klebsiella pneumoniae Species 0.000 description 1
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 description 1
- 241000712902 Lassa mammarenavirus Species 0.000 description 1
- 241000589248 Legionella Species 0.000 description 1
- 208000007764 Legionnaires' Disease Diseases 0.000 description 1
- 208000004554 Leishmaniasis Diseases 0.000 description 1
- 241000270322 Lepidosauria Species 0.000 description 1
- 241000700563 Leporipoxvirus Species 0.000 description 1
- 241000589902 Leptospira Species 0.000 description 1
- 102000001109 Leukocyte L1 Antigen Complex Human genes 0.000 description 1
- 108010069316 Leukocyte L1 Antigen Complex Proteins 0.000 description 1
- 206010024503 Limb reduction defect Diseases 0.000 description 1
- 239000000232 Lipid Bilayer Substances 0.000 description 1
- 241000186779 Listeria monocytogenes Species 0.000 description 1
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- 208000008771 Lymphadenopathy Diseases 0.000 description 1
- 108010064548 Lymphocyte Function-Associated Antigen-1 Proteins 0.000 description 1
- 206010025323 Lymphomas Diseases 0.000 description 1
- 241000711828 Lyssavirus Species 0.000 description 1
- 101710156564 Major tail protein Gp23 Proteins 0.000 description 1
- 241001115401 Marburgvirus Species 0.000 description 1
- 208000006758 Marek Disease Diseases 0.000 description 1
- 241000283923 Marmota monax Species 0.000 description 1
- 241000701244 Mastadenovirus Species 0.000 description 1
- 101710091157 Maturation protein A2 Proteins 0.000 description 1
- 201000005505 Measles Diseases 0.000 description 1
- 102000018697 Membrane Proteins Human genes 0.000 description 1
- 108010052285 Membrane Proteins Proteins 0.000 description 1
- 241000710185 Mengo virus Species 0.000 description 1
- 241000713333 Mouse mammary tumor virus Species 0.000 description 1
- 208000003445 Mouth Neoplasms Diseases 0.000 description 1
- 241000711466 Murine hepatitis virus Species 0.000 description 1
- 241001135960 Murine rotavirus Species 0.000 description 1
- 101100010166 Mus musculus Dok3 gene Proteins 0.000 description 1
- 241000186367 Mycobacterium avium Species 0.000 description 1
- 241000187484 Mycobacterium gordonae Species 0.000 description 1
- 241000186363 Mycobacterium kansasii Species 0.000 description 1
- 108010062010 N-Acetylmuramoyl-L-alanine Amidase Proteins 0.000 description 1
- 241000588652 Neisseria gonorrhoeae Species 0.000 description 1
- 241000588650 Neisseria meningitidis Species 0.000 description 1
- 102000005348 Neuraminidase Human genes 0.000 description 1
- 108010006232 Neuraminidase Proteins 0.000 description 1
- 206010029260 Neuroblastoma Diseases 0.000 description 1
- 108091060545 Nonsense suppressor Proteins 0.000 description 1
- 206010030155 Oesophageal carcinoma Diseases 0.000 description 1
- 108010038807 Oligopeptides Proteins 0.000 description 1
- 102000015636 Oligopeptides Human genes 0.000 description 1
- 241000702259 Orbivirus Species 0.000 description 1
- 241000700629 Orthopoxvirus Species 0.000 description 1
- 241000702244 Orthoreovirus Species 0.000 description 1
- 101710093908 Outer capsid protein VP4 Proteins 0.000 description 1
- 101710135467 Outer capsid protein sigma-1 Proteins 0.000 description 1
- 206010033128 Ovarian cancer Diseases 0.000 description 1
- 206010061535 Ovarian neoplasm Diseases 0.000 description 1
- 241000282579 Pan Species 0.000 description 1
- 206010061902 Pancreatic neoplasm Diseases 0.000 description 1
- 241000282320 Panthera leo Species 0.000 description 1
- 241000282372 Panthera onca Species 0.000 description 1
- 241000282373 Panthera pardus Species 0.000 description 1
- 241000700639 Parapoxvirus Species 0.000 description 1
- 206010033976 Paravaccinia Diseases 0.000 description 1
- 241000701945 Parvoviridae Species 0.000 description 1
- 241000606860 Pasteurella Species 0.000 description 1
- 108091005804 Peptidases Proteins 0.000 description 1
- 102000035195 Peptidases Human genes 0.000 description 1
- 108091093037 Peptide nucleic acid Proteins 0.000 description 1
- 241000224016 Plasmodium Species 0.000 description 1
- 241000223960 Plasmodium falciparum Species 0.000 description 1
- 241000223821 Plasmodium malariae Species 0.000 description 1
- 241001505293 Plasmodium ovale Species 0.000 description 1
- 241000223810 Plasmodium vivax Species 0.000 description 1
- 206010035664 Pneumonia Diseases 0.000 description 1
- 208000000474 Poliomyelitis Diseases 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 208000024777 Prion disease Diseases 0.000 description 1
- ONIBWKKTOPOVIA-UHFFFAOYSA-N Proline Natural products OC(=O)C1CCCN1 ONIBWKKTOPOVIA-UHFFFAOYSA-N 0.000 description 1
- 206010060862 Prostate cancer Diseases 0.000 description 1
- 208000000236 Prostatic Neoplasms Diseases 0.000 description 1
- 239000004365 Protease Substances 0.000 description 1
- 108090000708 Proteasome Endopeptidase Complex Proteins 0.000 description 1
- 102000004245 Proteasome Endopeptidase Complex Human genes 0.000 description 1
- 101710176177 Protein A56 Proteins 0.000 description 1
- 108010076504 Protein Sorting Signals Proteins 0.000 description 1
- 101710188315 Protein X Proteins 0.000 description 1
- 241000589516 Pseudomonas Species 0.000 description 1
- 102100030060 Pulmonary surfactant-associated protein A1 Human genes 0.000 description 1
- 102000044126 RNA-Binding Proteins Human genes 0.000 description 1
- 101710105008 RNA-binding protein Proteins 0.000 description 1
- 241000700159 Rattus Species 0.000 description 1
- 208000015634 Rectal Neoplasms Diseases 0.000 description 1
- 206010038389 Renal cancer Diseases 0.000 description 1
- 208000018569 Respiratory Tract disease Diseases 0.000 description 1
- 241000712907 Retroviridae Species 0.000 description 1
- 241000711931 Rhabdoviridae Species 0.000 description 1
- 206010051497 Rhinotracheitis Diseases 0.000 description 1
- 241000606701 Rickettsia Species 0.000 description 1
- 241000283984 Rodentia Species 0.000 description 1
- 241000235070 Saccharomyces Species 0.000 description 1
- 241000282695 Saimiri Species 0.000 description 1
- 241000607142 Salmonella Species 0.000 description 1
- 241000714213 San Miguel sea lion virus Species 0.000 description 1
- 241000235346 Schizosaccharomyces Species 0.000 description 1
- 241000710961 Semliki Forest virus Species 0.000 description 1
- 239000012506 Sephacryl® Substances 0.000 description 1
- MTCFGRXMJLQNBG-UHFFFAOYSA-N Serine Natural products OCC(N)C(O)=O MTCFGRXMJLQNBG-UHFFFAOYSA-N 0.000 description 1
- 241000713311 Simian immunodeficiency virus Species 0.000 description 1
- 241000702677 Simian rotavirus Species 0.000 description 1
- 108020004682 Single-Stranded DNA Proteins 0.000 description 1
- 208000000453 Skin Neoplasms Diseases 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 101001039853 Sonchus yellow net virus Matrix protein Proteins 0.000 description 1
- 241000295644 Staphylococcaceae Species 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 208000005718 Stomach Neoplasms Diseases 0.000 description 1
- 241001478880 Streptobacillus moniliformis Species 0.000 description 1
- 241000193985 Streptococcus agalactiae Species 0.000 description 1
- 241000194049 Streptococcus equinus Species 0.000 description 1
- 241000193998 Streptococcus pneumoniae Species 0.000 description 1
- 241000193996 Streptococcus pyogenes Species 0.000 description 1
- 241001505901 Streptococcus sp. 'group A' Species 0.000 description 1
- 241000193990 Streptococcus sp. 'group B' Species 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 241000701093 Suid alphaherpesvirus 1 Species 0.000 description 1
- 241000700568 Suipoxvirus Species 0.000 description 1
- 230000006044 T cell activation Effects 0.000 description 1
- 230000037453 T cell priming Effects 0.000 description 1
- 102100027213 T-cell-specific surface glycoprotein CD28 Human genes 0.000 description 1
- 241000712908 Tacaribe mammarenavirus Species 0.000 description 1
- 208000024313 Testicular Neoplasms Diseases 0.000 description 1
- 206010057644 Testis cancer Diseases 0.000 description 1
- RYYWUUFWQRZTIU-UHFFFAOYSA-N Thiophosphoric acid Chemical class OP(O)(S)=O RYYWUUFWQRZTIU-UHFFFAOYSA-N 0.000 description 1
- AYFVYJQAPQTCCC-UHFFFAOYSA-N Threonine Natural products CC(O)C(N)C(O)=O AYFVYJQAPQTCCC-UHFFFAOYSA-N 0.000 description 1
- 239000004473 Threonine Substances 0.000 description 1
- RKEITGVZZHXKON-SKAWGCAZSA-N Thymidine glycol Chemical compound O=C1NC(=O)C(C)(O)C(O)N1[C@@H]1O[C@H](CO)[C@@H](O)C1 RKEITGVZZHXKON-SKAWGCAZSA-N 0.000 description 1
- 208000024770 Thyroid neoplasm Diseases 0.000 description 1
- 108010060818 Toll-Like Receptor 9 Proteins 0.000 description 1
- 102100027010 Toll-like receptor 1 Human genes 0.000 description 1
- 102100027009 Toll-like receptor 10 Human genes 0.000 description 1
- 102100024333 Toll-like receptor 2 Human genes 0.000 description 1
- 102100024324 Toll-like receptor 3 Human genes 0.000 description 1
- 102100039360 Toll-like receptor 4 Human genes 0.000 description 1
- 102100039357 Toll-like receptor 5 Human genes 0.000 description 1
- 102100039387 Toll-like receptor 6 Human genes 0.000 description 1
- 102100039390 Toll-like receptor 7 Human genes 0.000 description 1
- 102100033110 Toll-like receptor 8 Human genes 0.000 description 1
- 102100033117 Toll-like receptor 9 Human genes 0.000 description 1
- 241000223997 Toxoplasma gondii Species 0.000 description 1
- 241000589886 Treponema Species 0.000 description 1
- 241000589904 Treponema pallidum subsp. pertenue Species 0.000 description 1
- 208000005448 Trichomonas Infections Diseases 0.000 description 1
- 206010044620 Trichomoniasis Diseases 0.000 description 1
- 102100040247 Tumor necrosis factor Human genes 0.000 description 1
- 208000006105 Uterine Cervical Neoplasms Diseases 0.000 description 1
- 206010046865 Vaccinia virus infection Diseases 0.000 description 1
- 206010046980 Varicella Diseases 0.000 description 1
- 241000700647 Variola virus Species 0.000 description 1
- 241001494970 Vesicular exanthema of swine virus Species 0.000 description 1
- 241000711970 Vesiculovirus Species 0.000 description 1
- 101000936049 Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961) Outer membrane lipoprotein Blc Proteins 0.000 description 1
- 208000010094 Visna Diseases 0.000 description 1
- 241000713325 Visna/maedi virus Species 0.000 description 1
- 241000120645 Yellow fever virus group Species 0.000 description 1
- 229920000392 Zymosan Polymers 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 206010000210 abortion Diseases 0.000 description 1
- 231100000176 abortion Toxicity 0.000 description 1
- 230000021736 acetylation Effects 0.000 description 1
- 238000006640 acetylation reaction Methods 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000004721 adaptive immunity Effects 0.000 description 1
- 239000011543 agarose gel Substances 0.000 description 1
- 235000004279 alanine Nutrition 0.000 description 1
- 229930013930 alkaloid Natural products 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 230000009435 amidation Effects 0.000 description 1
- 238000007112 amidation reaction Methods 0.000 description 1
- 239000005557 antagonist Substances 0.000 description 1
- 230000001775 anti-pathogenic effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 210000004436 artificial bacterial chromosome Anatomy 0.000 description 1
- 210000001106 artificial yeast chromosome Anatomy 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 244000309743 astrovirus Species 0.000 description 1
- 241000701792 avian adenovirus Species 0.000 description 1
- 208000022362 bacterial infectious disease Diseases 0.000 description 1
- 201000009036 biliary tract cancer Diseases 0.000 description 1
- 208000020790 biliary tract neoplasm Diseases 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000003124 biologic agent Substances 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000002619 cancer immunotherapy Methods 0.000 description 1
- 229940095731 candida albicans Drugs 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000020411 cell activation Effects 0.000 description 1
- 230000006369 cell cycle progression Effects 0.000 description 1
- 238000002659 cell therapy Methods 0.000 description 1
- 208000015114 central nervous system disease Diseases 0.000 description 1
- 201000010881 cervical cancer Diseases 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 150000005829 chemical entities Chemical class 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229940038705 chlamydia trachomatis Drugs 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 208000029742 colonic neoplasm Diseases 0.000 description 1
- 238000002648 combination therapy Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 201000005332 contagious pustular dermatitis Diseases 0.000 description 1
- 230000004940 costimulation Effects 0.000 description 1
- 201000003740 cowpox Diseases 0.000 description 1
- 230000009260 cross reactivity Effects 0.000 description 1
- 239000000287 crude extract Substances 0.000 description 1
- 238000011461 current therapy Methods 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- UFULAYFCSOUIOV-UHFFFAOYSA-N cysteamine Chemical compound NCCS UFULAYFCSOUIOV-UHFFFAOYSA-N 0.000 description 1
- 230000009089 cytolysis Effects 0.000 description 1
- 229940104302 cytosine Drugs 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000000368 destabilizing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 230000013020 embryo development Effects 0.000 description 1
- 206010014599 encephalitis Diseases 0.000 description 1
- 201000002491 encephalomyelitis Diseases 0.000 description 1
- 239000012645 endogenous antigen Substances 0.000 description 1
- 210000001163 endosome Anatomy 0.000 description 1
- 210000002889 endothelial cell Anatomy 0.000 description 1
- 229940092559 enterobacter aerogenes Drugs 0.000 description 1
- 239000006167 equilibration buffer Substances 0.000 description 1
- 230000008029 eradication Effects 0.000 description 1
- 201000004101 esophageal cancer Diseases 0.000 description 1
- 230000000763 evoking effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 102000013165 exonuclease Human genes 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000013265 extended release Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 210000002950 fibroblast Anatomy 0.000 description 1
- 206010016629 fibroma Diseases 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 210000003495 flagella Anatomy 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 206010017758 gastric cancer Diseases 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- ZRALSGWEFCBTJO-UHFFFAOYSA-O guanidinium Chemical compound NC(N)=[NH2+] ZRALSGWEFCBTJO-UHFFFAOYSA-O 0.000 description 1
- 229940029575 guanosine Drugs 0.000 description 1
- 229940047650 haemophilus influenzae Drugs 0.000 description 1
- 239000000185 hemagglutinin Substances 0.000 description 1
- 208000006454 hepatitis Diseases 0.000 description 1
- 231100000283 hepatitis Toxicity 0.000 description 1
- 208000005252 hepatitis A Diseases 0.000 description 1
- 208000029570 hepatitis D virus infection Diseases 0.000 description 1
- 201000010284 hepatitis E Diseases 0.000 description 1
- 125000001072 heteroaryl group Chemical group 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 230000005965 immune activity Effects 0.000 description 1
- 230000007813 immunodeficiency Effects 0.000 description 1
- 238000009169 immunotherapy Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000000411 inducer Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 210000001911 interdigitating cell Anatomy 0.000 description 1
- 238000007918 intramuscular administration Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 125000000741 isoleucyl group Chemical group [H]N([H])C(C(C([H])([H])[H])C([H])([H])C([H])([H])[H])C(=O)O* 0.000 description 1
- 206010023332 keratitis Diseases 0.000 description 1
- 201000010666 keratoconjunctivitis Diseases 0.000 description 1
- 201000010982 kidney cancer Diseases 0.000 description 1
- 206010023497 kuru Diseases 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 210000002664 langerhans' cell Anatomy 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 231100000518 lethal Toxicity 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 125000001909 leucine group Chemical group [H]N(*)C(C(*)=O)C([H])([H])C(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 208000012987 lip and oral cavity carcinoma Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 201000007270 liver cancer Diseases 0.000 description 1
- 208000014018 liver neoplasm Diseases 0.000 description 1
- 239000012160 loading buffer Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 208000018555 lymphatic system disease Diseases 0.000 description 1
- 210000005210 lymphoid organ Anatomy 0.000 description 1
- 230000034701 macropinocytosis Effects 0.000 description 1
- 208000015486 malignant pancreatic neoplasm Diseases 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229960003151 mercaptamine Drugs 0.000 description 1
- 239000002207 metabolite Substances 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 239000013586 microbial product Substances 0.000 description 1
- 230000002297 mitogenic effect Effects 0.000 description 1
- 238000001823 molecular biology technique Methods 0.000 description 1
- 238000009126 molecular therapy Methods 0.000 description 1
- 238000013365 molecular weight analysis method Methods 0.000 description 1
- 208000005871 monkeypox Diseases 0.000 description 1
- 210000001616 monocyte Anatomy 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- BSOQXXWZTUDTEL-ZUYCGGNHSA-N muramyl dipeptide Chemical class OC(=O)CC[C@H](C(N)=O)NC(=O)[C@H](C)NC(=O)[C@@H](C)O[C@H]1[C@H](O)[C@@H](CO)O[C@@H](O)[C@@H]1NC(C)=O BSOQXXWZTUDTEL-ZUYCGGNHSA-N 0.000 description 1
- 208000009091 myxoma Diseases 0.000 description 1
- DAZSWUUAFHBCGE-KRWDZBQOSA-N n-[(2s)-3-methyl-1-oxo-1-pyrrolidin-1-ylbutan-2-yl]-3-phenylpropanamide Chemical compound N([C@@H](C(C)C)C(=O)N1CCCC1)C(=O)CCC1=CC=CC=C1 DAZSWUUAFHBCGE-KRWDZBQOSA-N 0.000 description 1
- 210000000822 natural killer cell Anatomy 0.000 description 1
- 230000002981 neuropathic effect Effects 0.000 description 1
- 125000006501 nitrophenyl group Chemical group 0.000 description 1
- 230000009871 nonspecific binding Effects 0.000 description 1
- 239000002777 nucleoside Substances 0.000 description 1
- 150000003833 nucleoside derivatives Chemical class 0.000 description 1
- 230000030648 nucleus localization Effects 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000006174 pH buffer Substances 0.000 description 1
- 208000008443 pancreatic carcinoma Diseases 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
- 238000005897 peptide coupling reaction Methods 0.000 description 1
- 210000005259 peripheral blood Anatomy 0.000 description 1
- 239000011886 peripheral blood Substances 0.000 description 1
- 210000003819 peripheral blood mononuclear cell Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- COLNVLDHVKWLRT-QMMMGPOBSA-N phenylalanine group Chemical group N[C@@H](CC1=CC=CC=C1)C(=O)O COLNVLDHVKWLRT-QMMMGPOBSA-N 0.000 description 1
- 150000004713 phosphodiesters Chemical group 0.000 description 1
- 230000026731 phosphorylation Effects 0.000 description 1
- 238000006366 phosphorylation reaction Methods 0.000 description 1
- 229940118768 plasmodium malariae Drugs 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 108010094020 polyglycine Proteins 0.000 description 1
- 229920000232 polyglycine polymer Polymers 0.000 description 1
- 238000003752 polymerase chain reaction Methods 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 108010000222 polyserine Proteins 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 210000004986 primary T-cell Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000001236 prokaryotic cell Anatomy 0.000 description 1
- 238000001243 protein synthesis Methods 0.000 description 1
- 239000002510 pyrogen Substances 0.000 description 1
- 108091007054 readthrough proteins Proteins 0.000 description 1
- 206010038038 rectal cancer Diseases 0.000 description 1
- 201000001275 rectum cancer Diseases 0.000 description 1
- 108091008146 restriction endonucleases Proteins 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000001177 retroviral effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 125000000548 ribosyl group Chemical group C1([C@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 201000000849 skin cancer Diseases 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- VUFNRPJNRFOTGK-UHFFFAOYSA-M sodium;1-[4-[(2,5-dioxopyrrol-1-yl)methyl]cyclohexanecarbonyl]oxy-2,5-dioxopyrrolidine-3-sulfonate Chemical compound [Na+].O=C1C(S(=O)(=O)[O-])CC(=O)N1OC(=O)C1CCC(CN2C(C=CC2=O)=O)CC1 VUFNRPJNRFOTGK-UHFFFAOYSA-M 0.000 description 1
- MIDXXTLMKGZDPV-UHFFFAOYSA-M sodium;1-[6-(2,5-dioxopyrrol-1-yl)hexanoyloxy]-2,5-dioxopyrrolidine-3-sulfonate Chemical compound [Na+].O=C1C(S(=O)(=O)[O-])CC(=O)N1OC(=O)CCCCCN1C(=O)C=CC1=O MIDXXTLMKGZDPV-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229940043517 specific immunoglobulins Drugs 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 210000004989 spleen cell Anatomy 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 150000003431 steroids Chemical class 0.000 description 1
- 201000011549 stomach cancer Diseases 0.000 description 1
- 229940031000 streptococcus pneumoniae Drugs 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 238000000856 sucrose gradient centrifugation Methods 0.000 description 1
- 208000006379 syphilis Diseases 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 201000003120 testicular cancer Diseases 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 201000002510 thyroid cancer Diseases 0.000 description 1
- 210000001685 thyroid gland Anatomy 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000009258 tissue cross reactivity Effects 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 230000024664 tolerance induction Effects 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 230000009261 transgenic effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 201000002311 trypanosomiasis Diseases 0.000 description 1
- 230000004614 tumor growth Effects 0.000 description 1
- 241000990167 unclassified Simian adenoviruses Species 0.000 description 1
- 241000724775 unclassified viruses Species 0.000 description 1
- 208000007089 vaccinia Diseases 0.000 description 1
- 201000006266 variola major Diseases 0.000 description 1
- 201000000627 variola minor Diseases 0.000 description 1
- 208000014016 variola minor infection Diseases 0.000 description 1
- 230000007501 viral attachment Effects 0.000 description 1
- 201000002498 viral encephalitis Diseases 0.000 description 1
- 201000001862 viral hepatitis Diseases 0.000 description 1
- 210000000605 viral structure Anatomy 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/12—Viral antigens
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
- A61K39/001102—Receptors, cell surface antigens or cell surface determinants
- A61K39/001103—Receptors for growth factors
- A61K39/001104—Epidermal growth factor receptors [EGFR]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
- A61K39/001102—Receptors, cell surface antigens or cell surface determinants
- A61K39/001103—Receptors for growth factors
- A61K39/001106—Her-2/neu/ErbB2, Her-3/ErbB3 or Her 4/ErbB4
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
- A61K39/001102—Receptors, cell surface antigens or cell surface determinants
- A61K39/001129—Molecules with a "CD" designation not provided for elsewhere
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
- A61K39/001148—Regulators of development
- A61K39/00115—Apoptosis related proteins, e.g. survivin or livin
- A61K39/001151—Apoptosis related proteins, e.g. survivin or livin p53
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
- A61K39/001154—Enzymes
- A61K39/001156—Tyrosinase and tyrosinase related proteinases [TRP-1 or TRP-2]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
- A61K39/001169—Tumor associated carbohydrates
- A61K39/001171—Gangliosides, e.g. GM2, GD2 or GD3
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
- A61K39/00118—Cancer antigens from embryonic or fetal origin
- A61K39/001182—Carcinoembryonic antigen [CEA]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
- A61K39/001184—Cancer testis antigens, e.g. SSX, BAGE, GAGE or SAGE
- A61K39/001186—MAGE
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
- A61K39/00119—Melanoma antigens
- A61K39/001191—Melan-A/MART
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
- A61K39/00119—Melanoma antigens
- A61K39/001192—Glycoprotein 100 [Gp100]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/02—Bacterial antigens
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/39—Medicinal preparations containing antigens or antibodies characterised by the immunostimulating additives, e.g. chemical adjuvants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
- A61P31/06—Antibacterial agents for tuberculosis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
- A61P31/14—Antivirals for RNA viruses
- A61P31/16—Antivirals for RNA viruses for influenza or rhinoviruses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
- A61P31/14—Antivirals for RNA viruses
- A61P31/18—Antivirals for RNA viruses for HIV
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
- A61P31/20—Antivirals for DNA viruses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
- A61P31/20—Antivirals for DNA viruses
- A61P31/22—Antivirals for DNA viruses for herpes viruses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P33/00—Antiparasitic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P33/00—Antiparasitic agents
- A61P33/02—Antiprotozoals, e.g. for leishmaniasis, trichomoniasis, toxoplasmosis
- A61P33/04—Amoebicides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P33/00—Antiparasitic agents
- A61P33/02—Antiprotozoals, e.g. for leishmaniasis, trichomoniasis, toxoplasmosis
- A61P33/06—Antimalarials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
- A61P35/02—Antineoplastic agents specific for leukemia
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/02—Immunomodulators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/02—Immunomodulators
- A61P37/04—Immunostimulants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/08—Antiallergic agents
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/005—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from viruses
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N7/00—Viruses; Bacteriophages; Compositions thereof; Preparation or purification thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/51—Medicinal preparations containing antigens or antibodies comprising whole cells, viruses or DNA/RNA
- A61K2039/52—Bacterial cells; Fungal cells; Protozoal cells
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/51—Medicinal preparations containing antigens or antibodies comprising whole cells, viruses or DNA/RNA
- A61K2039/525—Virus
- A61K2039/5258—Virus-like particles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/555—Medicinal preparations containing antigens or antibodies characterised by a specific combination antigen/adjuvant
- A61K2039/55511—Organic adjuvants
- A61K2039/55555—Liposomes; Vesicles, e.g. nanoparticles; Spheres, e.g. nanospheres; Polymers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/555—Medicinal preparations containing antigens or antibodies characterised by a specific combination antigen/adjuvant
- A61K2039/55511—Organic adjuvants
- A61K2039/55561—CpG containing adjuvants; Oligonucleotide containing adjuvants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/57—Medicinal preparations containing antigens or antibodies characterised by the type of response, e.g. Th1, Th2
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/60—Medicinal preparations containing antigens or antibodies characteristics by the carrier linked to the antigen
- A61K2039/6031—Proteins
- A61K2039/6075—Viral proteins
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2319/00—Fusion polypeptide
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2710/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA dsDNA viruses
- C12N2710/00011—Details
- C12N2710/22011—Polyomaviridae, e.g. polyoma, SV40, JC
- C12N2710/22022—New viral proteins or individual genes, new structural or functional aspects of known viral proteins or genes
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2710/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA dsDNA viruses
- C12N2710/00011—Details
- C12N2710/22011—Polyomaviridae, e.g. polyoma, SV40, JC
- C12N2710/22023—Virus like particles [VLP]
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2730/00—Reverse transcribing DNA viruses
- C12N2730/00011—Details
- C12N2730/10011—Hepadnaviridae
- C12N2730/10111—Orthohepadnavirus, e.g. hepatitis B virus
- C12N2730/10122—New viral proteins or individual genes, new structural or functional aspects of known viral proteins or genes
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2730/00—Reverse transcribing DNA viruses
- C12N2730/00011—Details
- C12N2730/10011—Hepadnaviridae
- C12N2730/10111—Orthohepadnavirus, e.g. hepatitis B virus
- C12N2730/10123—Virus like particles [VLP]
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2795/00—Bacteriophages
- C12N2795/00011—Details
- C12N2795/00034—Use of virus or viral component as vaccine, e.g. live-attenuated or inactivated virus, VLP, viral protein
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2795/00—Bacteriophages
- C12N2795/00011—Details
- C12N2795/18011—Details ssRNA Bacteriophages positive-sense
- C12N2795/18111—Leviviridae
- C12N2795/18122—New viral proteins or individual genes, new structural or functional aspects of known viral proteins or genes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Definitions
- the present invention is related to the fields of vaccinology, immunology and medicine.
- the invention provides compositions and methods for enhancing immunological responses against virus-like particles (VLPs) or against antigens coupled, fused or attached otherwise to VLPs by packaging immunostimulatory substances, in particular immunostimulatory nucleic acids, and even more particular oligonucleotides containing at least one non-methylated CpG sequence, into the VLPs.
- the invention can be used to induce strong and sustained T cell responses particularly useful for the treatment of tumors and chronic viral diseases as well as allergies and other chronic diseases.
- lymphocytes are the key players of the adaptive immune system. Each lymphocyte expresses antigen-receptors of unique specificity. Upon recognizing an antigen via the receptor, lymphocytes proliferate and develop effector function. Few lymphocytes exhibit specificity for a given antigen or pathogen, and massive proliferation is usually required before an effector response can be measured—hence, the slow kinetics of the adaptive immune system. Since a significant proportion of the expanded lymphocytes survive and may maintain some effector function following elimination of the antigen, the adaptive immune system reacts faster when encountering the antigen a second time. This is the basis of its ability to remember.
- LPS lipopolysaccharides
- CpG non-methylated CG-rich DNA
- RNA double stranded RNA
- CTL cytotoxic T lymphocyte
- Th cells T helper cells
- CTL-responses induced by cross-priming i.e. by priming with exogenous antigens that reached the class I pathway, have also been shown to require the presence of Th cells (Bennett, S. R. M., et al., J. Exp. Med.
- CD40L CD40-ligand
- B cells B cells
- macrophages CD40-ligand
- DCs dendritic cells
- Triggering of CD40 on B cells is essential for isotype switching and the generation of B cell memory (Foy, T. M., et al., Ann. Rev. Immunol. 14:591 (1996)).
- stimulation of CD40 on macrophages and DCs leads to their activation and maturation (Cella, M., et al., Curr. Opin. Immunol.
- Th cells have to recognize their ligands on the same APC as the CTLs, indicating that a cognate interaction is required (Bennett, S. R. M., et al., J. Exp. Med. 186:65 (1997)).
- CD40L-mediated stimulation by Th cells leads to the activation of DCs, which subsequently are able to prime CTL-responses.
- type I interferons in particular interferon ⁇ and ⁇ may be equally important as IL-12.
- LCMV lymphocytic choriomeningitis virus
- VSV vesicular stomatitis virus
- influenza virus Tripp, R. A., et al., J. Immunol. 155:2955 (1995)
- vaccinia virus Leist, T. P., et al., Scand. J. Immunol.
- Th cells may assist induction of CTLs via CD40 triggering on DCs.
- stimulation of CD40 using CD40L or anti-CD40 antibodies may enhance CTL induction after stimulation with viruses or tumor cells.
- CD40L is an important activator of DCs, there seem to be additional molecules that can stimulate maturation and activation of DCs during immune responses.
- CD40 is not measurably involved in the induction of CTLs specific for LCMV or VSV (Ruedl, C., et al., J. Exp. Med. 189:1875 (1999)).
- VSV-specific CTL responses are partly dependent upon the presence of CD4+T cells (Kante, T. M., et al., Immunity 5:41 (1996)), this helper effect is not mediated by CD40L.
- Candidates for effector molecules triggering maturation of DCs during immune responses include Trance and TNFA (Bachmann, M. F., et al., J. Exp. Med. 189:1025 (1999); Sallusto, F., and A. Lanzavecchia, J Exp Med 179:1109 (1994)).
- the administered antigen is protected against rapid degradation, and the adjuvant provides an extended release of a low level of antigen.
- viruses Unlike isolated proteins, viruses induce prompt and efficient immune responses in the absence of any adjuvants both with and without T-cell help (Bachmann & Zinkernagel, Ann. Rev. Immunol. 15:235-270 (1997)).
- viruses Although viruses often consist of few proteins, they are able to trigger much stronger immune responses than their isolated components.
- B cell responses it is known that one crucial factor for the immunogenicity of viruses is the repetitiveness and order of surface epitopes. Many viruses exhibit a quasi-crystalline surface that displays a regular array of epitopes which efficiently crosslinks epitope-specific immunoglobulins on B cells (Bachmann & Zinkernagel, Immunol. Today 17:553-558 (1996)). This crosslinking of surface immunoglobulins on B cells is a strong activation signal that directly induces cell-cycle progression and the production of IgM antibodies.
- Such triggered B cells are able to activate T helper cells, which in turn induce a switch from IgM to IgG antibody production in B cells and the generation of long-lived B cell memory—the goal of any vaccination (Bachmann & Zinkernagel, Ann. Rev. Immunol. 15:235-270 (1997)).
- Viral structure is even linked to the generation of anti-antibodies in autoimmune disease and as a part of the natural response to pathogens (see Fehr, T., et al., J. Exp. Med. 185:1785-1792 (1997)).
- antigens on viral particles that are organized in an ordered and repetitive array are highly immunogenic since they can directly activate B cells.
- cytotoxic T cell response In addition to strong B cell responses, viral particles are also able to induce the generation of a cytotoxic T cell response, another crucial arm of the immune system. These cytotoxic T cells are particularly important for the elimination of non-cytopathic viruses such as HIV or Hepatitis B virus and for the eradication of tumors. Cytotoxic T cells do not recognize native antigens but rather recognize their degradation products in association with MHC class I molecules (Townsend & Bodmer, Ann. Rev. Immunol. 7:601-624 (1989)).
- Macrophages and dendritic cells are able to take up and process exogenous viral particles (but not their soluble, isolated components) and present the generated degradation product to cytotoxic T cells, leading to their activation and proliferation (Kovacsovics-Bankowski et al., Proc. Natl. Acad. Sci. USA 90:4942-4946 (1993); Bachmann et al., Eur. J. Immunol. 26:2595-2600 (1996)).
- Viral particles as antigens exhibit two advantages over their isolated components: (1) due to their highly repetitive surface structure, they are able to directly activate B cells, leading to high antibody titers and long-lasting B cell memory; and (2) viral particles, but not soluble proteins, have the potential to induce a cytotoxic T cell response, even if the viruses are non-infectious and adjuvants are absent.
- 5,871,747 which discloses synthetic polymer particles carrying on the surface one or more proteins covalently bonded thereto; and a core particle with a non-covalently bound coating, which at least partially covers the surface of said core particle, and at least one biologically active agent in contact with said coated core particle (see, e.g., WO 94/15585).
- VLPs virus-like particles
- a virus-like particle is being exploited in the area of vaccine production because of both their structural properties and their non-infectious nature.
- VLPs are supermolecular structures built in a symmetric manner from many protein molecules of one or more types. They lack the viral genome and, therefore, are noninfectious. VLPs can often be produced in large quantities by heterologous expression and can be easily be purified.
- CpG non-methylated CG motifs
- DNA oligomers rich in CpG motifs can exhibit immunostimulatory capacity, their efficiency is often limited, since they are unstable in vitro and in vivo. Thus, they exhibit unfavorable pharmacokinetics. In order to render CpG-oligonucleotides more potent, it is therefore usually necessary to stabilize them by introducing phosphorothioate modifications of the phosphate backbone.
- a second limitation for the use of CpG-oligonucleotides to stimulate immune responses is their lack of specificity, since all APC's and B cells in contact with CpG-oligonucleotides become stimulated.
- the efficiency and specificity of CpG-oligonucleotides may be improved by stabilizing them or packaging them in a way that restricts cellular activation to those cells that also present the relevant antigen.
- immunostimulatory CpG-oligodeoxynucleotides induce strong side effects by causing extramedullary hemopoiesis accompanied by splenomegaly and lymphadenopathy in mice (Sparigan et al., J. Immunol. (1999), 162:2368-74 and Example 18).
- VLPs have been shown to be efficiently presented on MHC class I molecules as they, presumably after uptake by macropinocytosis, are efficiently processed and crossprimed onto MHC class I.
- the mechanism of crosspriming is not clear to date, but TAP-dependent and TAP-independent pathways have been proposed.
- This invention is based on the surprising finding that immunostimulatory substances such as DNA oligonucleotides can be packaged into VLPs which renders them more immunogenic.
- immunostimulatory substances such as DNA oligonucleotides
- the nucleic acids and oligonucleotides, respectively, present in VLPs can be replaced specifically by the immunostimulatory substances and DNA-oligonucleotides containing CpG motifs, respectively.
- these packaged immunostimulatory substances in particular immunostimulatory nucleic acids such as unmethylated CpG-containing oligonucleotides retained their immunostimulatory capacity without widespread activation of the innate immune system.
- compositions comprising VLP's and the immunostimulatory substances in accordance with the present invention, and in particular the CpG-VLPs are dramatically more immunogenic than their CpG-free counterparts and induce enhanced B and T cell responses.
- the immune response against antigens optionally coupled, fused or attached otherwise to the VLPs is similarly enhanced as the immune response against the VLP itself.
- the T cell responses against both the VLPs and antigens are especially directed to the Th1 type.
- Antigens attached to CpG-loaded VLPs may therefore be ideal vaccines for prophylactic or therapeutic vaccination against allergies, tumors and other self-molecules and chronic viral diseases.
- the invention provides a composition for enhancing an immune response in an animal comprising a virus-like particle and an immunostimulatory substance, preferably an immunostimulatory nucleic acid, an even more preferably an unmethylated CpG-containing oligonucleotide, where the substance, nucleic acid or oligonucleotide is coupled, fused, or otherwise attached to or enclosed by, i.e., bound, to the virus-like particle.
- the composition further comprises an antigen bound to the virus-like particle.
- the immunostimulatory nucleic acids in particular the unmethylated CpG-containing oligonucleotides are stabilized by phosphorothioate modifications of the phosphate backbone.
- the immunostimulatory nucleic acids, in particular the unmethylated CpG-containing oligonucleotides are packaged into the VLPs by digestion of RNA within the VLPs and simultaneous addition of the DNA oligonucleotides containing CpGs of choice.
- the VLPs can be disassembled before they are reassembled in the presence of CpGs.
- the immunostimulatory nucleic acids do not contain CpG motifs but nevertheless exhibit immunostimulatory activities.
- Such nucleic acids are described in WO 01/22972. All sequences described therein are hereby incorporated by way of reference.
- the virus-like particle is a recombinant virus-like particle.
- the virus-like particle is free of a lipoprotein envelope.
- the recombinant virus-like particle comprises, or alternatively consists of, recombinant proteins of Hepatitis B virus, BK virus or other human Polyoma virus, measles virus, Sindbis virus, Rotavirus, Foot-and-Mouth-Disease virus, Retrovirus, Norwalk virus or human Papilloma virus, RNA-phages, Q ⁇ -phage, GA-phage, fr-phage and Ty.
- the virus-like particle comprises, or alternatively consists of, one or more different Hepatitis B virus core (capsid) proteins (HBcAgs).
- the virus-like particle comprises recombinant proteins, or fragments thereof, of a RNA-phage.
- Preferred RNA-phages are Q ⁇ -phage, AP 205-phage, GA-phage, fr-phage
- the antigen is a recombinant antigen.
- the antigen can be selected from the group consisting of:
- a polypeptide suited to induce an immune response against cancer cells (2) a polypeptide suited to induce an immune response against infectious diseases;
- the antigen can be selected from the group consisting of: (1) an organic molecule suited to induce an immune response against cancer cells; (2) an organic molecule suited to induce an immune response against infectious diseases; (3) an organic molecule suited to induce an immune response against allergens; (4) an organic molecule suited to induce an improved response against self-antigens; (5) an organic molecule suited to induce an immune response in farm animals or pets; and (6) an organic molecule suited to induce a response against a drug, a hormone or a toxic compound.
- the antigen comprises, or alternatively consists of, a cytotoxic T cell epitope.
- the virus-like particle comprises the Hepatitis B virus core protein and the cytotoxic T cell epitope is fused to the C-terminus of said Hepatitis B virus core protein. In one embodiment, they are fused by a leucine linking sequence.
- a method of enhancing an immune response in a human or other animal species comprising introducing into the animal a composition comprising a virus-like particle and immunostimulatory substance, preferably an immunostimulatory nucleic acid, an even more preferably an unmethylated CpG-containing oligonucleotide where the substance, preferably the nucleic acid, and even more preferally the oligonucleotide is bound (i.e. coupled, attached or enclosed) to the virus-like particle.
- the composition further comprises an antigen bound to the virus-like particle.
- the composition is introduced into an animal subcutaneously, intramuscularly, intranasally, intradermally, intravenously or directly into a lymph node.
- the immune enhancing composition is applied locally, near a tumor or local viral reservoir against which one would like to vaccinate.
- the immune response is a T cell response, and the T cell response against the antigen is enhanced.
- the T cell response is a cytotoxic T cell response, and the cytotoxic T cell response against the antigen is enhanced.
- the present invention also relates to a vaccine comprising an immunologically effective amount of the immune enhancing composition of the present invention together with a pharmaceutically acceptable diluent, carrier or excipient.
- the vaccine further comprises at least one adjuvant, such as incomplete Freund's adjuvant.
- the invention also provides a method of immunizing and/or treating an animal comprising administering to the animal an immunologically effective amount of the disclosed vaccine.
- the immunostimulatory substance-containing VLPs preferably the immunostimulatory nucleic acid-containing VLP's, an even more preferably the unmethylated CpG-containing oligonucleotide VLPs are used for vaccination of animals or humans against the VLP itself or against antigens coupled, fused or attached otherwise to the VLP.
- the modified VLPs can be used to vaccinate against tumors, viral diseases, self-molecules and self antigens, respectively, or non-peptidic small molecules, for example.
- the vaccination can be for prophylactic or therapeutic purposes, or both.
- the modified VLPs can be used to vaccinate against allergies in order to induce immune-deviation.
- the desired immune response will be directed against antigens coupled, fised or attached otherwise to the immunostimulatory substance-containing VLPs, preferably the immunostimulatory nucleic acid-containing VLP's, an even more preferably the unmethylated CpG-containing oligonucleotide VLPs.
- the antigens can be peptides, proteins, domains, carbohydrates or small molecules such as, for example, steroid hormones or drugs, such as nicotine.
- the desired immune response can be directed against the VLP itself. This latter application will be used in cases where the VLP originates from a virus against which one would like to vaccinate.
- the route of injection is preferably subcutaneous or intramuscular, but it would also be possible to apply the CpG-containing VLPs intradermally, intranasally, intravenously or directly into the lymph node.
- the CpG-containing antigen-coupled or free VLPs are applied locally, near a tumor or local viral reservoir against which one would like to vaccinate.
- FIG. 1 shows the DNA sequence of the CpG-oligonucleotide (A) and the DNA sequence of the peptide p33-containing VLP derived from hepatitis B core (B).
- the nonameric p33 epitope is genetically fused to the C-terminus of the hepatitis B core protein at position 185 via a three leucine linking sequence.
- FIG. 2 shows the structure of the p33-VLPs as assessed by electron microscopy (A) and SDS PAGE (B).
- A electron microscopy
- B SDS PAGE
- FIG. 3 shows p33-VLPs in a native agarose gel electrophoresis (1% agarose) after control incubation or after digestion with RNase A upon staining with ethidium bromide (A) or Coomassie blue (B) in order to assess for the presence of RNA or protein.
- Recombinantly produced p33-VLPs were diluted at a final concentration of 0.5 ug/ul protein in PBS buffer and incubated in the absence (lane 1) or presence (lane 2) of RNase A (100 ug/ml) (Sigma, Division of Fluka AG, Switzerland) for 2 h at 37° C.
- the samples were subsequently complemented with 6-fold concentrated DNA-loading buffer (MBS Fermentas GmbH, Heidelberg, Germany) and run for 30 min at 100 volts in a 1% native agarose gel.
- the Gene Ruler marker (MBS Fermentas GmbH, Heidelberg, Germany) was used as reference for p33-VLPs migration velocity (lane M). Arrows are indicating the presence of RNA packaged in p33-VLPs (A) or p33-VLP capsids themselves (B). Identical results were obtained in 3 independent experiments.
- FIG. 4 shows p33-VLPs in a native agarose gel electrophoresis (1% agarose) after control incubation or after digestion with RNase A in the presence of buffer only or CpG-containing DNA-oligomers upon staining with ethidium bromide (A) or Coomassie blue (B) in order to assess for the presence of RNA/DNA or protein.
- Recombinant p33-VLPs were diluted at a final concentration of 0.5 ug/ul protein in PBS buffer and incubated in the absence (lane 1) or presence (lane 2 and 3) of RNase A (100 ug/ml) (Sigma, Division of Fluka AG, Switzerland) for 2 h at 37° C.
- FIG. 5 shows p33-VLPs in a native agarose gel electrophoresis (1% agarose) before and after digestion with RNase A in the presence of CpG-containing DNA-oligomers and subsequent dialysis (for the elimination of VLP-unbound CpG DNA) upon staining with ethidium bromide (A) or Coomassie blue (B) in order to assess for the presence of DNA or protein.
- Recombinant p33-VLPs were diluted at a final concentration of 0.5 ug/ul protein in PBS buffer and incubated in absence (lane 1) or in presence (lanes 2 to 5) of RNase A (100 ug/ml) (Sigma, Division of Fluka AG, Switzerland) for 2 h at 37° C. 50 nmol CpG-oligonucleotides (containing phosphorothioate modification of the phosphate backbone: lanes 2 and 3, containing phosphodiester bonds: lanes 4 and 5) were added to VLPs before RNase A digestion.
- Treated samples were extensively dialysed for 24 hours against PBS (4500-fold dilution) with a 300 kDa MWCO dialysis membrane (Spectrum Medical Industries Inc., Houston, USA) to eliminate the in excess DNA (lanes 3 and 5).
- the Gene Ruler marker (MBS Fermentas GmbH, Heidelberg, Germany) was used as reference for p33-VLPs migration velocity (lane M). Arrows are indicating the presence of RNA or CpG-oligonucleotides in p33-VLPs (A) or p33-VLP capsids themselves (B).
- FIG. 6 shows p33-VLPs in a native agarose gel electrophoresis (1% agarose) after control incubation or after digestion with RNase A where CpG-containing oligonucleotides were added only after completing the RNA digestion upon staining with ethidium bromide (A) or Coomassie blue (B) in order to assess for the presence of RNA/DNA or protein.
- A ethidium bromide
- B Coomassie blue
- Recombinant p33-VLPs were diluted at a final concentration of 0.5 ug/ul protein in PBS buffer and incubated in the absence (lane 1) or presence (lane 2 and 3) of RNase A (100 ug/ml) (Sigma, Division of Fluka AG, Switzerland) for 2 h at 37° C. 5 nmol CpG-oligonucleotides (containing phosphorothioate modification of the phosphate backbone) were added to sample 3 only after the RNase A digestion.
- the Gene Ruler marker (MBS Fermentas GmbH, Heidelberg, Germany) was used as reference for p33-VLPs migration velocity (lane M).
- FIG. 7 shows that p33-VLPs packaged with CpG-oligonucleotides (containing phosphorothioate modification of the phosphate backbone), are effective at inducing viral protection.
- Mice were subcutaneously primed with 100 ⁇ g p33-VLP alone, mixed with 20 nmol CpG-oligonucleotide (p33-VLP+CpG) or p33-VLP packaged with CpG-oligonucleotide after dialysis of free CpG-oligonucleotide (p33-VLP/CpG). Untreated naive mice served as negative control.
- mice were challenged with LCMV (200 pfu, intravenously) and viral titers were assessed in the spleens 5 days later as described in Bachmann, M. F., “Evaluation of lymphocytic choriomeningitis virus-specific cytotoxic T cell responses,” in Immunology Methods Manual , Lefkowitz, I., ed., Academic Press Ltd., New York, N.Y. (1997) p. 1921.
- FIG. 8 shows that p33-VLPs packaged with CpG-oligonucleotide (containing phosphodiester bonds) are effective at inducing viral protection.
- Mice were subcutaneously primed with 100 ⁇ g p33-VLP alone, mixed with 20 nmol CpG-oligonucleotides (p33-VLP+CpG) or p33-VLPs packaged with CpG-oligonucleotides after dialysis of free CpG-oligonucleotides) (p33-VLP/CpG). Untreated naive mice served as negative control.
- mice were challenged with LCMV (200 pfu, intravenously) and viral titers were assessed in the spleens 5 days later as described in Bachmann, M. F., “Evaluation of lymphocytic choriomeningitis virus-specific cytotoxic T cell responses,” in Immunology Methods Manual , Lefkowitz, I., ed., Academic Press Ltd., New York, N.Y. (1997) p. 1921.
- FIG. 9 shows that mice treated with CpG-oligonucleotides alone are not protected from viral infection.
- Mice were subcutaneously primed with 20 nmol CpG-oligonucleotides (CpG), or left untreated as negative control (naive). Twenty-one days later, mice were challenged with LCMV (200 pfu, intravenously) and viral titers were assessed in the spleens 5 days later as described in Bachmarm, M. F., “Evaluation of lymphocytic choriomeningitis virus-specific cytotoxic T cell responses,” in Immunology Methods Manual , Lefkowitz, I., ed., Academic Press Ltd., New York, N.Y. (1997) p. 1921.
- FIG. 10 shows the amino acid sequence of the BKV (AS) VP1 protein (GI:332779). This sequence was expressed in yeast to produce BKV capsids (Sasnauskas K. et al., J. Biol Chem 380(3):381 (1999); K. et al., Generation of recombinant virus - like particles of different polyomaviruses in yeast. 3 rd International Workshop “Virus-like particles as vaccines” Berlin, (2001)).
- FIG. 11 shows the DNA sequence of the 246 bp double stranded DNA fragment used for packaging and stabilization of BKV VLPs.
- FIG. 12 shows BKV VLPs (15 ⁇ g) in a native 0.8% agarose gel electrophoresis after control incubation or after digestion with RNase A and subsequent incubation with fluorescent phosphorothioate (pt) CpG-oligonucleotides.
- UV excitation leads to detection of DNA in an ethidium bromide stained gel (A) and to fluorescence of CpG-FAM oligomers in the absence of ethidium bromide (B).
- Lane 1 BKV VLPs untreated; lane 2: BKV VLPs RNase A treated; lane 3: BKV VLPs RNase A treated with CpG(pt)-FAM; lane 4: BKV VLPs RNase A treated with CpG(pt)-FAM plus DNaseI treatment; lane M: Gene Ruler 1 kb DNA ladder (MBI Fermentas GmbH, Heidelberg, Germany). Arrows are indicating the presence of RNA or CpG-FAM oligomers in BKV VLPs.
- FIG. 13 shows BKV VLPs (15 ⁇ g) in a native 0.8% agarose gel electrophoresis after control incubation or after digestion with RNase A and subsequent incubation with double stranded (ds) DNA (246 bp) upon staining with ethidium bromide (A) or Coomassie Blue (B).
- Lane 1 BKV VLPs untreated;
- lane 2 BKV VLPs RNase A treated;
- lane 3 BKV VLPs treated with RNase A and incubated with ds DNA;
- lane M Gene Ruler 1 kb DNA ladder (MBI Fermentas GmbH, Heidelberg, Germany). Arrows indicate the presence of RNA or ds DNA in BKV VLPs.
- FIG. 14 shows BKV VLPs (15 ⁇ g) in a native 0.8% agarose gel electrophoresis after control incubation or after digestion with RNase A and subsequent incubation with CpG-oligonucleotides (with phosphate—or with phosphorothioate (pt) backbone) upon staining with ethidium bromide (A) or Coomassie Blue (B).
- Lane 1 BKV VLPs stock (PBS/50% glycerol); lane 2: BKV VLPs untreated (PBS buffer); lane 3: BKV VLPs RNase A treated; lane 4: BKV VLPs RNase A treated post-dialysis; lane 5: BKV VLPs RNase A treated with CpG-oligonucleotides; lane 6: BKV VLPs RNase A treated with CpG(pt)-oligomers; lane 7: BKV VLPs RNase A treated with CpG(pt)-oligomers post-dialysis; lane M: Gene Ruler 1 kb DNA ladder (MBI Fermentas GmbH, Heidelberg, Germany). Arrows indicate the presence of RNA or CpG-oligonucleotides in BKV VLPs.
- FIG. 15 shows mouse IgG1 and IgG2a OD50% antibody titers to BKV VLPs on day 14 after immunization with BKV VLPs and phosphorothioate (pt) CpG-oligonucleotides.
- Lane 1 RNase treated BKV VLPs
- lane 2 RNase treated BKV VLPs in combination with 0.3 nmol CpG(pt)-oligomer
- lane 3 RNase treated BKV VLPs in combination with 20 nmol CpG(pt)-oligomer
- lane 4 RNase treated BKV VLPs containing 0.3 nmol CpG(pt)-oligomer.
- FIG. 16 shows p33-VLPs in a native agarose gel electrophoresis (1% agarose) after control incubation or after digestion with RNase A where linear double-stranded DNA (350 base pairs long) was added only after completing the RNA digestion upon staining with ethidium bromide (A) or Coomassie blue (B) in order to assess for the presence of RNA/DNA or protein.
- Recombinant p33-VLPs were diluted at a final concentration of 0.5 ug/ul protein in PBS buffer and incubated in the absence (lane 1) or presence (lanes 2, 3 and 4) of RNase A (100 ug/ml) (Sigma, Division of Fluka AG, Switzerland) for 2 h at 37° C.
- RNase A 100 ug/ml
- Linear double-stranded DNA of 350 bp in length was added to sample 3 and 4 only after the RNase A digestion to a final concentration of 100 ng/ml and incubated for 3 hours at 37° C.
- Sample 4 was further digested with DNase 1 (50 IU/ml)(Sigma, Division of Fluka AG, Switzerland) for additional 3 hours at 37° C.
- the Gene Ruler marker (MBS Fermentas GmbH, Heidelberg, Germany) was used as reference for p33-VLPs migration velocity (lane M). Arrows are indicating the presence of RNA/dsDNA free or enclosed in p33-VLPs (A) and p33-VLPs (B).
- FIG. 17 shows packaging of B-CpG into HBc33 VLPs.
- FIG. 18 shows packaging of NKCpG into HBc33 VLPs.
- FIG. 19 shows packaging of g10gacga-PO into HBc33 VLPs.
- FIG. 20 shows packaging of CyCpG-150 into HBc33 VLPs.
- FIG. 21 shows packaging of NKCpGpt into HBcP1A VLPs.
- FIG. 22 shows coupling of p33 to HBcAg VLPs.
- FIG. 23 shows packaging of B-CpGpt into HBx33 VLPs.
- FIG. 24 shows coupling of p33 to Q ⁇ VLPs.
- FIG. 25 shows ionic strength and low protein concentration allow RNA hydrolysis by RNase A in Q ⁇ VLPs.
- FIG. 26 shows ionic strength increases immunostimulatory nucleic acid packaging into Q ⁇ VLPs.
- FIG. 27 shows packaging of B-CpGpt, g10gacga-PO and dsCyCpG into Qbx33 VLPs.
- FIG. 28 shows SDS-PAGE analysis of the fractions from the sucrose gradient centrifugation after Q ⁇ VLP disassembly and reassembly in the presence of immunostimulatory nucleic acids.
- FIG. 29 shows electron micrographs of Q ⁇ VLP after disassembly and reassembly in the presence of oligonucleotide (CpG) 20 OpA.
- FIG. 30 shows ouchterlony analysis (immunodiffusion) of the diassembled and reassembled Q ⁇ VLP.
- FIG. 31 shows gelelectrophoretic analysis of dissassembled and reassembled Q ⁇ VLP.
- FIG. 32 shows electron micrographs of the dissassembled and reassembled Q ⁇ VLP with the oligonucleotide CyOpA.
- FIG. 33 shows electron micrographs of the purified dissassembled and reassembled Q ⁇ VLP with the different immunostimulatory nucleic acids.
- FIG. 34 shows SDS-PAGE analysis of the coupling of Q ⁇ VLP reassembled with the oligodeoxynucleotide CyOpA to the p33GGC peptide.
- FIG. 35 shows packaged oligodeoxynucleotides after disassembly and reassembly of Q ⁇ VLPs and subsequent coupling to p33 GGC peptide.
- FIG. 36 shows purification of disassembled Q ⁇ coat protein by size exclusion chromatography.
- FIG. 37 shows purification of reassembled Q ⁇ VLPs by size exclusion chromatography.
- FIG. 38 shows electron micrographs of Q ⁇ VLPs that were reassembled in the presence of different oligodeoxynucleotides.
- FIG. 39 shows analysis of the disulfide-bond pattern in reassembled and purified Q ⁇ capsids.
- FIG. 40 shows analysis of nucleic acid content of the reassembled Q ⁇ VLPs by nuclease treatment and agarose gelelectrophoresis.
- FIG. 41 shows analysis of nucleic acid content of the reassembled Q ⁇ VLPs by proteinase K treatment and polyacrylamide TBE/Urea gelelectrophoresis.
- FIG. 42 shows electron micrographs AP205 VLP disassembled and subsequently reassembled in the presence of CyCpG.
- FIG. 43 shows agarose gel-electrophoresis analysis of AP205 VLPs diassembled and reassembled in the presence of CyCpG.
- FIG. 44 shows electron micrograph of disassembled and reassembled AP205.
- FIG. 45 shows Agarose gel-electrophoresis analysis of AP205 VLPs diassembled and reassembled in the presence of CyCpG.
- FIG. 46 shows SDS-PAGE analysis, of disassembled and reassembled AP205 VLPs.
- FIG. 47 shows SDS-PAGE analysis of the peptide coupling to disassembled and reassembled AP205 VLPs.
- FIG. 48 shows free immunostimulatory nucleic acids but not immunostimulatory nucleic acids packaged in VLPs induce splenomegaly.
- FIG. 49 shows different immunostimulatory nucleic acids packaged in VLP fused to antigen result in a potent antigen-specific CTL response and virus protection.
- FIG. 50 shows the immunostimulatory nucleic acid g10gacga-PS packaged in VLP fused to antigen result in a potent antigen-specific CTL response and virus protection.
- FIG. 51 shows immunostimulatory nucleic acids packaged in HBcAg and Q ⁇ VLPs result in a potent antigen-specific CTL response and virus protection.
- FIG. 52 shows immunostimulatory nucleic acids packaged in VLPs are even more efficient in inducing CTL responses than VLPs mixed with immunostimulatory nucleic acids.
- FIG. 53 shows analysis of non-enzymatic RNA hydrolysis of the RNA in Q ⁇ VLPs.
- FIG. 54 shows packaging of oligodeoxynucleotides into Q ⁇ VLPs after non-enzymatic RNA hydrolysis.
- FIG. 55 shows analysis of packaging of oligodeoxynucleotides into Q ⁇ VLPs after non-enzymatic RNA hydrolysis.
- Amino acid linker An “amino acid linker”, or also just termed “linker” within this specification, as used herein, either associates the antigen or antigenic determinant with the second attachment site, or more preferably, already comprises or contains the second attachment site, typically—but not necessarily—as one amino acid residue, preferably as a cysteine residue.
- amino acid linker does not intend to imply that such an amino acid linker consists exclusively of amino acid residues, even if an amino acid linker consisting of amino acid residues is a preferred embodiment of the present invention.
- amino acid residues of the amino acid linker are, preferably, composed of naturally occuring amino acids or unnatural amino acids known in the art, all-L or all-D or mixtures thereof.
- an amino acid linker comprising a molecule with a sulhydryl group or cysteine residue is also encompassed within the invention.
- Such a molecule comprise preferably a C1-C6 alkyl-, cycloalkyl (C5,C6), aryl or heteroaryl moiety.
- a linker comprising preferably a C1-C6 alkyl-, cycloalkyl- (C5,C6), aryl- or heteroaryl-moiety and devoid of any amino acid(s) shall also be encompassed within the scope of the invention.
- Association between the antigen or antigenic determinant or optionally the second attachment site and the amino acid linker is preferably by way of at least one covalent bond, more preferably by way of at least one peptide bond.
- Animal As used herein, the term “animal” is meant to include, for example, humans, sheep, horses, cattle, pigs, dogs, cats, rats, mice, mammals, birds, reptiles, fish, insects and arachnids.
- Antibody refers to molecules which are capable of binding an epitope or antigenic determinant.
- the term is meant to include whole antibodies and antigen-binding fragments thereof, including single-chain antibodies.
- the antibodies are human antigen binding antibody fragments and include, but are not limited to, Fab, Fab′ and F(ab′)2, Fd, single-chain Fvs (scFv), single-chain antibodies, disulfide-linked Fvs (sdFv) and fragments comprising either a V L or V H domain.
- the antibodies can be from any animal origin including birds and mammals.
- the antibodies are human, murine, rabbit, goat, guinea pig, camel, horse or chicken.
- human antibodies include antibodies having the amino acid sequence of a human immunoglobulin and include antibodies isolated from human immunoglobulin libraries or from animals transgenic for one or more human immunoglobulins and that do not express endogenous immunoglobulins, as described, for example, in U.S. Pat. No. 5,939,598 by Kucherlapati et al.
- Antigen refers to a molecule capable of being bound by an antibody or a T cell receptor (TCR) if presented by MHC molecules.
- TCR T cell receptor
- An antigen is additionally capable of being recognized by the immune system and/or being capable of inducing a humoral immune response and/or cellular immune response leading to the activation of B- and/or T-lymphocytes. This may, however, require that, at least in certain cases, the antigen contains or is linked to a Th cell epitope and is given in adjuvant.
- An antigen can have one or more epitopes (B- and T-epitopes). The specific reaction referred to above is meant to indicate that the antigen will preferably react, typically in a highly selective manner, with its corresponding antibody or TCR and not with the multitude of other antibodies or TCRs which may be evoked by other antigens.
- a “microbial antigen” as used herein is an antigen of a microorganism and includes, but is not limited to, infectious virus, infectious bacteria, parasites and infectious fungi. Such antigens include the intact microorganism as well as natural isolates and fragments or derivatives thereof and also synthetic or recombinant compounds which are identical to or similar to natural microorganism antigens and induce an immune response specific for that microorganism. A compound is similar to a natural microorganism antigen if it induces an immune response (humoral and/or cellular) to a natural microorganism antigen. Such antigens are used routinely in the art and are well known to the skilled artisan.
- Retroviridae e.g. human immunodeficiency viruses, such as HIV-1 (also referred to as HTLV-III, LAV or HTLV-III/LAV, or HIV-III); and other isolates, such as HIV-LP
- Picomaviridae e.g. polio viruses, hepatitis A virus; enteroviruses, human Coxsackie viruses, rhinoviruses, echoviruses
- Calciviridae e.g. strains that cause gastroenteritis
- Togaviridae e.g. equine encephalitis viruses, rubella viruses
- Flaviridae e.g.
- Coronoviridae e.g. coronaviruses
- Rhabdoviradae e.g. vesicular stomatitis viruses, rabies viruses
- Filoviridae e.g. ebola viruses
- Paramyxoviridae e.g. parainfluenza viruses, mumps virus, measles virus, respiratory syncytial virus
- Orthomyxoviridae e.g. influenza viruses
- Bungaviridae e.g. Hantaan viruses, bunga viruses, phleboviruses and Nairo viruses
- Arena viridae hemorrhagic fever viruses
- Reoviridae e.g.
- reoviruses reoviruses, orbiviurses and rotaviruses
- Birnaviridae Hepadnaviridae (Hepatitis B virus); Parvovirida (parvoviruses); Papovaviridae (papilloma viruses, polyoma viruses); Adenoviridae (most adenoviruses); Herpesviridae (herpes simplex virus (HSV) 1 and 2, varicella zoster virus, cytomegalovirus (CMV), herpes virus); Poxviridae (variola viruses, vaccinia viruses, pox viruses); and Iridoviridae (e.g. African swine fever virus); and unclassified viruses (e.g.
- Both gram negative and gram positive bacteria serve as antigens in vertebrate animals.
- Such gram positive bacteria include, but are not limited to, Pasteurella species, Staphylococci species and Streptococcus species.
- Gram negative bacteria include, but are not limited to, Escherichia coli , Pseudomonas species, and Salmonella species.
- infectious bacteria include but are not limited to: Helicobacter pyloris, Borelia burgdorferi, Legionella pneumophilia , Mycobacteria sps. (e.g. M. tuberculosis, M. avium, M intracellulare, M. kansaii, M.
- infectious fungi examples include: Cryptococcus neoformans, Histoplasma capsulatum, Coccidioides immitis, Blastomyces dermatitidis, Chlamydia trachomatis and Candida albicans .
- Other infectious organisms i.e., protists
- Plasmodium such as Plasmodium falciparum, Plasmodium malariae, Plasmodium ovale, Plasmodium vivax, Toxoplasma gondii and Shistosoma.
- compositions and methods of the invention are also useful for treating cancer by stimulating an antigen-specific immune response against a cancer antigen.
- a “tumor antigen” as used herein is a compound, such as a peptide, associated with a tumor or cancer and which is capable of provoking an immune response.
- the compound is capable of provoking an immune response when presented in the context of an MHC molecule.
- Tumor antigens can be prepared from cancer cells either by preparing crude extracts of cancer cells, for example, as described in Cohen, et al., Cancer Research, 54:1055 (1994), by partially purifying the antigens, by recombinant technology or by de novo synthesis of known antigens.
- Tumor antigens include antigens that are antigenic portions of or are a whole tumor or cancer polypeptide. Such antigens can be isolated or prepared recombinantly or by any other means known in the art. Cancers or tumors include, but are not limited to, biliary tract cancer; brain cancer; breast cancer; cervical cancer; choriocarcinoma; colon cancer; endometrial cancer; esophageal cancer; gastric cancer; intraepithelial neoplasms; lymphomas; liver cancer; lung cancer (e.g.
- melanoma neuroblastomas
- oral cancer ovarian cancer; pancreas cancer; prostate cancer; rectal cancer; sarcomas; skin cancer; testicular cancer; thyroid cancer; and renal cancer, as well as other carcinomas and sarcomas.
- Antigenic determinant As used herein, the term “antigenic determinant” is meant to refer to that portion of an antigen that is specifically recognized by either B- or T-lymphocytes. B-lymphocytes respond to foreign antigenic determinants via antibody production, whereas T-lymphocytes are the mediator of cellular immunity. Thus, antigenic determinants or epitopes are those parts of an antigen that are recognized by antibodies, or in the context of an MHC, by T-cell receptors.
- Antigen presenting cell As used herein, the term “antigen presenting cell” is meant to refer to a heterogenous population of leucocytes or bone marrow derived cells which possess an immunostimulatory capacity. For example, these cells are capable of generating peptides bound to MHC molecules that can be recognized by T cells.
- the term is synonymous with the term “accessory cell” and includes, for example, Langerhans' cells, interdigitating cells, B cells, macrophages and dendritic cells. Under some conditions, epithetral cells, endothelial cells and other, non-bone marrow derived cells may also serve as antigen presenting cells.
- association refers to the binding of the first and second attachment sites that is preferably by way of at least one non-peptide bond.
- the nature of the association may be covalent, ionic, hydrophobic, polar or any combination thereof, preferably the nature of the association is covalent.
- first attachment site refers to an element of non-natural or natural origin, to which the second attachment site located on the antigen or antigenic determinant may associate.
- the first attachment site may be a protein, a polypeptide, an amino acid, a peptide, a sugar, a polynucleotide, a natural or synthetic polymer, a secondary metabolite or compound (biotin, fluorescein, retinol, digoxigenin, metal ions, phenylmethylsulfonylfluoride), or a combination thereof, or a chemically reactive group thereof.
- the first attachment site is located, typically and preferably on the surface, of the virus-like particle. Multiple first attachment sites are present on the surface of virus-like particle typically in a repetitive configuration.
- Attachment Site refers to an element associated with the antigen or antigenic determinant to which the first attachment site located on the surface of the virus-like particle may associate.
- the second attachment site of the antigen or antigenic determinant may be a protein, a polypeptide, a peptide, a sugar, a polynucleotide, a natural or synthetic polymer, a secondary metabolite or compound (biotin, fluorescein, retinol, digoxigenin, metal ions, phenylmethylsulfonylfluoride), or a combination thereof, or a chemically reactive group thereof.
- At least one second attachment site is present on the antigen or antigenic determinant.
- the term “antigen or antigenic determinant with at least one second attachment site” refers, therefore, to an antigen or antigenic construct comprising at least the antigen or antigenic determinant and the second attachment site.
- these antigen or antigenic constructs comprise an “amino acid linker”.
- Bound refers to binding that may be covalent, e.g., by chemically coupling, or non-covalent, e.g., ionic interactions, hydrophobic interactions, hydrogen bonds, etc.
- Covalent bonds can be, for example, ester, ether, phosphoester, amide, peptide, imide, carbon-sulfur bonds, carbon-phosphorus bonds, and the like.
- the term also includes the enclosement, or partial enclosement, of a substance.
- bound is broader than and includes terms such as “coupled,” “fused,” “enclosed”, “packaged” and “attached.”
- the immunostimulatory substance such as the unmethylated CpG-containing oligonucleotide can be enclosed by the VLP without the existence of an actual binding, neither covalently nor non-covalently.
- Coat protein(s) refers to the protein(s) of a bacteriophage or a RNA-phage capable of being incorporated within the capsid assembly of the bacteriophage or the RNA-phage.
- the term “CP” is used.
- the specific gene product of the coat protein gene of RNA-phage Q ⁇ is referred to as “Q ⁇ CP”
- the “coat proteins” of bacteriophage Q ⁇ comprise the “Q ⁇ CP” as well as the Al protein.
- the capsid of Bacteriophage Q ⁇ is composed mainly of the Q ⁇ CP, with a minor content of the A1 protein.
- the VLP Q ⁇ coat protein contains mainly Q ⁇ CP, with a minor content of A1 protein.
- Coupled As used herein, the term “coupled” refers to attachment by covalent bonds or by strong non-covalent interactions. Any method normally used by those skilled in the art for the coupling of biologically active materials can be used in the present invention.
- Fusion refers to the combination of amino acid sequences of different origin in one polypeptide chain by in-frame combination of their coding nucleotide sequences.
- the term “fusion” explicitly encompasses internal fusions, i.e., insertion of sequences of different origin within a polypeptide chain, in addition to fusion to one of its termini.
- CpG refers to an oligonucleotide which contains an unmethylated cytosine, guanine dinucleotide sequence (e.g.
- CpG DNA or DNA containing a cytosine followed by guanosine and linked by a phosphate bond) and stimulates/activates, e.g. has a mitogenic effect on, or induces or increases cytokine expression by, a vertebrate cell.
- CpGs can be useful in activating B cells, NK cells and antigen-presenting cells, such as monocytes, dendritic cells and macrophages, and T cells.
- the CpGs can include nucleotide analogs such as analogs containing phosphorothioester bonds and can be double-stranded or single-stranded. Generally, double-stranded molecules are more stable in vivo, while single-stranded molecules have increased immune activity.
- Epitope refers to portions of a polypeptide having antigenic or immunogenic activity in an animal, preferably a mammal, and most preferably in a human.
- An “immunogenic epitope,” as used herein, is defined as a portion of a polypeptide that elicits an antibody response or induces a T-cell response in an animal, as determined by any method known in the art. (See, for example, Geysen et al., Proc. Natl. Acad. Sci. USA 81:3998-4002 (1983)).
- antigenic epitope is defined as a portion of a protein to which an antibody can immunospecifically bind its antigen as determined by any method well known in the art. Immunospecific binding excludes non-specific binding but does not necessarily exclude cross-reactivity with other antigens. Antigenic epitopes need not necessarily be immunogenic. Antigenic epitopes can also be T-cell epitopes, in which case they can be bound immunospecifically by a T-cell receptor within the context of an MHC molecule.
- An epitope can comprise 3 amino acids in a spatial conformation which is unique to the epitope. Generally, an epitope consists of at least about 5 such amino acids, and more usually, consists of at least about 8-10 such amino acids. If the epitope is an organic molecule, it may be as small as Nitrophenyl.
- Immune response refers to a humoral immune response and/or cellular immune response leading to the activation or proliferation of B- and/or T-lymphocytes. In some instances, however, the immune responses may be of low intensity and become detectable only when using at least one substance in accordance with the invention. “Immunogenic” refers to an agent used to stimulate the immune system of a living organism, so that one or more functions of the immune system are increased and directed towards the immunogenic agent.
- An “immunogenic polypeptide” is a polypeptide that elicits a cellular and/or humoral immune response, whether alone or linked to a carrier in the presence or absence of an adjuvant.
- Immunization refers to conferring the ability to mount a substantial immune response (comprising antibodies or cellular immunity such as effector CTL) against a target antigen or epitope. These terms do not require that complete immunity be created, but rather that an immune response be produced which is substantially greater than baseline. For example, a mammal may be considered to be immunized against a target antigen if the cellular and/or humoral immune response to the target antigen occurs following the application of methods of the invention.
- Immunostimulatory nucleic acid refers to a nucleic acid capable of inducing and/or enhancing an immune response.
- Immunostimulatory nucleic acids comprise ribonucleic acids and in particular deoxyribonucleic acids.
- immunostimulatory nucleic acids contain at least one CpG motif e.g. a CG dinucleotide in which the C is unmethylated.
- the CG dinucleotide can be part of a palindromic sequence or can be encompassed within a non-palindromic sequence.
- Immunostimulatory nucleic acids not containing CpG motifs as described above encompass, by way of example, nucleic acids lacking CpG dinucleotides, as well as nucleic acids containing CG motifs with a methylated CG dinucleotide.
- immunostaimulatory nucleic acid should also refer to nucleic acids that contain modified bases such as 4-bromo-cytosine.
- Immunostimulatory substance refers to a substance capable of inducing and/or enhancing an immune response.
- Immunostimulatory substances include, but are not limited to, toll-like receptor activing substances and substances inducing cytokine secretion.
- Toll-like receptor activating substances include, but are not limited to, immunostimulatory nucleic acids, peptideoglycans, lipopolysaccharides, lipoteichonic acids, imidazoquinoline compounds, flagellins, lipoproteins, and immunostimulatory organic substances such as taxol.
- Natural origin As used herein, the term “natural origin” means that the whole or parts thereof are not synthetic and exist or are produced in nature.
- Non-natural As used herein, the term generally means not from nature, more specifically, the term means from the hand of man.
- Non-natural origin As used herein, the term “non-natural origin” generally means synthetic or not from nature; more specifically, the term means from the hand of man.
- Ordered and repetitive antigen or antigenic determinant array generally refers to a repeating pattern of antigen or antigenic determinant, characterized by a typically and preferably uniform spacial arrangement of the antigens or antigenic determinants with respect to the core particle and virus-like particle, respectively.
- the repeating pattern may be a geometric pattern.
- suitable ordered and repetitive antigen or antigenic determinant arrays are those which possess strictly repetitive paracrystalline orders of antigens or antigenic determinants, preferably with spacings of 0.5 to 30 nanometers, more preferably 5 to 15 nanometers.
- Oligonucleotide refers to a nucleic acid sequence comprising 2 or more nucleotides, generally at least about 6 nucleotides to about 100,000 nucleotides, preferably about 6 to about 2000 nucleotides, and more preferably about 6 to about 300 nucleotides, even more preferably about 20 to about 300 nucleotides, and even more preferably about 20 to about 100 nucleotides.
- oligonucleotide or “oligomer” also refer to a nucleic acid sequence comprising more than 100 to about 2000 nucleotides, preferably more than 100 to about 1000 nucleotides, and more preferably more than 100 to about 500 nucleotides.
- Oligonucleotide also generally refers to any polyribonucleotide or polydeoxribonucleotide, which may be unmodified RNA or DNA or modified RNA or DNA.
- Oligonucleotide includes, without limitation, single- and double-stranded DNA, DNA that is a mixture of single- and double-stranded regions, single- and double-stranded RNA, and RNA that is mixture of single- and double-stranded regions, hybrid molecules comprising DNA and RNA that may be single-stranded or, more typically, double-stranded or a mixture of single- and double-stranded regions.
- oligonucleotide refers to triple-stranded regions comprising RNA or DNA or both RNA and DNA.
- an oligonucleotide can be synthetic, genomic or recombinant, e.g., X-DNA, cosmid DNA, artificial bacterial chromosome, yeast artificial chromosome and filamentous phage such as M13.
- oligonucleotide also includes DNAs or RNAs containing one or more modified bases and DNAs or RNAs with backbones modified for stability or for other reasons.
- suitable nucleotide modifications/analogs include peptide nucleic acid, inosin, tritylated bases, phosphorothioates, alkylphosphorothioates, 5-nitroindole deoxyribofuranosyl, 5-methyldeoxycytosine and 5,6-dihydro-5,6-dihydroxydeoxythymidine.
- oligonucleotide embraces chemically, enzymatically or metabolically modified forms of polynucleotides as typically found in nature, as well as the chemical forms of DNA and RNA characteristic of viruses and cells. Other nucleotide analogs/modifications will be evident to those skilled in the art.
- the term “packaged” as used herein refers to the state of an immunostimulatory substance, in particular an immunostimulatory nucleic acid in relation to the VLP.
- the term “packaged” as used herein includes binding that may be covalent, e.g., by chemically coupling, or non-covalent, e.g., ionic interactions, hydrophobic interactions, hydrogen bonds, etc. Covalent bonds can be, for example, ester, ether, phosphoester, amide, peptide, imide, carbon-sulfur bonds, carbon-phosphorus bonds, and the like.
- the term also includes the enclosement, or partial enclosement, of a substance.
- the term “packaged” includes terms such as “coupled, “enclosed” and “attached.”
- the immunostimulatory substance such as the unmethylated CpG-containing oligonucleotide can be enclosed by the VLP without the existence of an actual binding, neither covalently nor non-covalently.
- the term “packaged” indicates that the nucleic acid in a packaged state is not accessible to DNAse or RNAse hydrolysis.
- the immunostimulatory nucleic acid is packaged inside the VLP capsids, most preferably in a non-covalent manner.
- compositions of the invention can be combined, optionally, with a pharmaceutically-acceptable carrier.
- pharmaceutically-acceptable carrier means one or more compatible solid or liquid fillers, diluents or encapsulating substances which are suitable for administration into a human or other animal.
- carrier denotes an organic or inorganic ingredient, natural or synthetic, with which the active ingredient is combined to facilitate the application.
- Organic molecule refers to any chemical entity of natural or synthetic origin.
- organic molecule as used herein encompasses, for example, any molecule being a member of the group of nucleotides, lipids, carbohydrates, polysaccharides, lipopolysaccharides, steroids, alkaloids, terpenes and fatty acids, being either of natural or synthetic origin.
- organic molecule encompasses molecules such as nicotine, cocaine, heroin or other pharmacologically active molecules contained in drugs of abuse.
- an organic molecule contains or is modified to contain a chemical functionality allowing its coupling, binding or other method of attachment to the virus-like particle in accordance with the invention.
- Polypeptide refers to a molecule composed of monomers (amino acids) linearly linked by amide bonds (also known as peptide bonds). It indicates a molecular chain of amino acids and does not refer to a specific length of the product. Thus, peptides, oligopeptides and proteins are included within the definition of polypeptide. This term is also intended to refer to post-expression modifications of the polypeptide, for example, glycosolations, acetylations, phosphorylations, and the like. A recombinant or derived polypeptide is not necessarily translated from a designated nucleic acid sequence. It may also be generated in any manner, including chemical synthesis.
- a substance which “enhances” an immune response refers to a substance in which an immune response is observed that is greater or intensified or deviated in any way with the addition of the substance when compared to the same immune response measured without the addition of the substance.
- the lytic activity of cytotoxic T cells can be measured, e.g. using a 51 Cr release assay, with and without the substance.
- the amount of the substance at which the CTL lytic activity is enhanced as compared to the CTL lytic activity without the substance is said to be an amount sufficient to enhance the immune response of the animal to the antigen.
- the immune response in enhanced by a factor of at least about 2, more preferably by a factor of about 3 or more.
- the amount of cytokines secreted may also be altered.
- Effective Amount refers to an amount necessary or sufficient to realize a desired biologic effect.
- An effective amount of the composition would be the amount that achieves this selected result, and such an amount could be determined as a matter of routine by a person skilled in the art.
- an effective amount for treating an immune system deficiency could be that amount necessary to cause activation of the immune system, resulting in the development of an antigen specific immune response upon exposure to antigen.
- the term is also synonymous with “sufficient amount.”
- the effective amount for any particular application can vary depending on such factors as the disease or condition being treated, the particular composition being administered, the size of the subject, and/or the severity of the disease or condition.
- One of ordinary skill in the art can empirically determine the effective amount of a particular composition of the present invention without necessitating undue experimentation.
- Self antigen refers to proteins encoded by the host's DNA and products generated by proteins or RNA encoded by the host's DNA are defined as self.
- proteins that result from a combination of two or several self-molecules or that represent a fraction of a self-molecule and proteins that have a high homology two self-molecules as defined above (>95%, preferably >97%, more preferably >99%) may also be considered self.
- the antigen is a self antigen. Very preferred embodiments of self-antigens useful for the present invention are described WO 02/056905, the disclosures of which are herewith incorporated by reference in its entirety.
- treatment refers to prophylaxis and/or therapy.
- the term refers to a prophylactic treatment which increases the resistance of a subject to infection with a pathogen or, in other words, decreases the likelihood that the subject will become infected with the pathogen or will show signs of illness attributable to the infection, as well as a treatment after the subject has become infected in order to fight the infection, e.g., reduce or eliminate the infection or prevent it from becoming worse.
- Vaccine refers to a formulation which contains the composition of the present invention and which is in a form that is capable of being administered to an animal.
- the vaccine comprises a conventional saline or buffered aqueous solution medium in which the composition of the present invention is suspended or dissolved.
- the composition of the present invention can be used conveniently to prevent, ameliorate, or otherwise treat a condition.
- the vaccine Upon introduction into a host, the vaccine is able to provoke an immune response including, but not limited to, the production of antibodies, cytokines and/or other cellular responses.
- the vaccine of the present invention additionally includes an adjuvant which can be present in either a minor or major proportion relative to the compound of the present invention.
- adjuvant refers to non-specific stimulators of the immune response or substances that allow generation of a depot in the host which when combined with the vaccine of the present invention provide for an even more enhanced immune response.
- adjuvants can be used. Examples include incomplete Freund's adjuvant, aluminum hydroxide and modified muramyldipeptide.
- adjuvant as used herein also refers to typically specific stimulators of the immune response which when combined with the vaccine of the present invention provide for an even more enhanced and typically specific immune response. Examples include, but limited to, GM-CSF, IL-2, IL-12, IFN ⁇ . Further examples are within the knowledge of the person skilled in the art.
- virus-like particle refers to a structure resembling a virus particle but which has not been demonstrated to be pathogenic. Typically, a virus-like particle in accordance with the invention does not carry genetic information encoding for the proteins of the virus-like particle. In general, virus-like particles lack the viral genome and, therefore, are noninfectious. Also, virus-like particles can often be produced in large quantities by heterologous expression and can be easily purified. Some virus-like particles may contain nucleic acid distinct from their genome.
- a virus-like particle in accordance with the invention is non replicative and noninfectious since it lacks all or part of the viral genome, in particular the replicative and infectious components of the viral genome.
- a virus-like particle in accordance with the invention may contain nucleic acid distinct from their genome.
- a typical and preferred embodiment of a virus-like particle in accordance with the present invention is a viral capsid such as the viral capsid of the corresponding virus, bacteriophage, or RNA-phage.
- the terms “viral capsid” or “capsid”, as interchangeably used herein, refer to a macromolecular assembly composed of viral protein subunits.
- the viral protein subunits assemble into a viral capsid and capsid, respectively, having a structure with an inherent repetitive organization, wherein said structure is, typically, spherical or tubular.
- the capsids of RNA-phages or HBcAg's have a spherical form of icosahedral symmetry.
- the term “capsid-like structure” as used herein, refers to a macromolecular assembly composed of viral protein subunits reproducing the capsid morphology in the above defined sense but deviating from the typical symmetrical assembly while maintaining a sufficient degree of order and repetitiveness.
- virus-like particle of a bacteriophage refers to a virus-like particle resembling the structure of a bacteriophage, being non replicative and noninfectious, and lacking at least the gene or genes encoding for the replication machinery of the bacteriophage, and typically also lacking the gene or genes encoding the protein or proteins responsible for viral attachment to or entry into the host.
- This definition should, however, also encompass virus-like particles of bacteriophages, in which the aforementioned gene or genes are still present but inactive, and, therefore, also leading to non-replicative and noninfectious virus-like particles of a bacteriophage.
- VLP of RNA phage coat protein The capsid structure formed from the self-assembly of 180 subunits of RNA phage coat protein and optionally containing host RNA is referred to as a “VLP of RNA phage coat protein”.
- VLP of Q ⁇ coat protein A specific example is the VLP of Q ⁇ coat protein.
- the VLP of Q ⁇ coat protein may either be assembled exclusively from Q ⁇ CP subunits (generated by expression of a Q ⁇ CP gene containing, for example, a TAA stop codon precluding any expression of the longer A1 protein through suppression, see Kozlovska, T. M., et al., Intervirology 39: 9-15 (1996)), or additionally contain A1 protein subunits in the capsid assembly.
- virus particle refers to the morphological form of a virus. In some virus types it comprises a genome surrounded by a protein capsid; others have additional structures (e.g., envelopes, tails, etc.).
- Non-enveloped viral particles are made up of a proteinaceous capsid that surrounds and protects the viral genome. Enveloped viruses also have a capsid structure surrounding the genetic material of the virus but, in addition, have a lipid bilayer envelope that surrounds the capsid.
- the VLP's are free of a lipoprotein envelope or a lipoprotein-containing envelope. In a further preferred embodiment, the VLP's are free of an envelope altogether.
- certain embodiments of the invention involve the use of recombinant nucleic acid technologies such as cloning, polymerase chain reaction, the purification of DNA and RNA, the expression of recombinant proteins in prokaryotic and eukaryotic cells, etc.
- recombinant nucleic acid technologies such as cloning, polymerase chain reaction, the purification of DNA and RNA, the expression of recombinant proteins in prokaryotic and eukaryotic cells, etc.
- Such methodologies are well known to those skilled in the art and can be conveniently found in published laboratory methods manuals (e.g., Sambrook, J. et al., eds., M OLECULAR C LONING , A L ABORATORY M ANUAL, 2nd. edition, Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. (1989); Ausubel, F.
- the disclosed invention provides compositions and methods for enhancing an immune response against one or more antigens in an animal.
- compositions of the invention comprise, or alternatively consist of, a virus-like particle and an immunostimulatory substance, preferably an immunostimulatory nucleic acid, and even more preferably an unmethylated CpG-containing oligonucleotide where the an immunostimulatory substance, the immunostimulatory nucleic acid or the oligonucleotide is bound to the virus-like particle.
- an immunostimulatory substance preferably an immunostimulatory nucleic acid, and even more preferably an unmethylated CpG-containing oligonucleotide where the an immunostimulatory substance, the immunostimulatory nucleic acid or the oligonucleotide is bound to the virus-like particle.
- the invention conveniently enables the practitioner to construct such a composition for various treatment and/or prophylactic prevention purposes, which include the prevention and/or treatment of infectious diseases, as well as chronic infectious diseases, and the prevention and/or treatment of cancers, for example.
- virus-like particles in the context of the present application refer to structures resembling a virus particle but which are not pathogenic. In general, virus-like particles lack the viral genome and, therefore, are noninfectious. Also, virus-like particles can be produced in large quantities by heterologous expression and can be easily purified.
- the virus-like particle is a recombinant virus-like particle.
- the skilled artisan can produce VLPs using recombinant DNA technology and virus coding sequences which are readily available to the public.
- the coding sequence of a virus envelope or core protein can be engineered for expression in a baculovirus expression vector using a commercially available baculovirus vector, under the regulatory control of a virus promoter, with appropriate modifications of the sequence to allow functional linkage of the coding sequence to the regulatory sequence.
- the coding sequence of a virus envelope or core protein can also be engineered for expression in a bacterial expression vector, for example.
- VLPs include, but are not limited to, the capsid proteins of Hepatitis B virus (Ulrich, et al, Virus Res. 50:141-182 (1998)), measles virus (Warnes, et al., Gene 160:173-178 (1995)), Sindbis virus, rotavirus (U.S. Pat. Nos. 5,071,651 and 5,374,426), foot-and-mouth-disease virus (Twomey, et al., Vaccine 13:1603-1610, (1995)), Norwalk virus (Jiang, X., et al., Science 250:1580-1583 (1990); Matsui, S. M., et al., J Clin. Invest.
- the retroviral GAG protein PCT Patent Appl. No. WO 96/30523
- the retrotransposon Ty protein p1 the surface protein of Hepatitis B virus (WO 92/11291), human papilloma virus (WO 98/15631), human polyoma virus (Sasnauskas K., et al., Biol. Chem. 380(3):381-386 (1999); Sasnauskas K., et al., Generation of recombinant virus - like particles of different polyomaviruses in yeast.
- RNA phages Ty, fr-phage, GA-phage, AP 205-phage and, in particular, Q ⁇ -phage.
- the VLP of the invention is not limited to any specific form.
- the particle can be synthesized chemically or through a biological process, which can be natural or non-natural.
- this type of embodiment includes a virus-like particle or a recombinant form thereof.
- the VLP can comprise, or alternatively consist of, recombinant polypeptides of Rotavirus; recombinant polypeptides of Norwalk virus; recombinant polypeptides of Alphavirus; recombinant proteins which form bacterial pili or pilus-like structures; recombinant polypeptides of Foot and Mouth Disease virus; recombinant polypeptides of measles virus, recombinant polypeptides of Sindbis virus, recombinant polypeptides of Retrovirus; recombinant polypeptides of Hepatitis B virus (e.g., a HBcAg); recombinant polypeptides of Tobacco mosaic virus; recombinant polypeptides of Flock House Virus; recombinant polypeptides of human Papillomavirus; recombinant polypeptides of Polyoma virus and, in particular, recombinant polypeptides of human Polyom
- the virus-like particle can further comprise, or alternatively consist of, one or more fragments of such polypeptides, as well as variants of such polypeptides.
- Variants of polypeptides can share, for example, at least 80%, 85%, 90%, 95%, 97%, or 99% identity at the amino acid level with their wild-type counterparts.
- the virus-like particle comprises, consists essentially of, or alternatively consists of recombinant proteins, or fragments thereof, of a RNA-phage.
- the RNA-phage is selected from the group consisting of a) bacteriophage Q ⁇ ; b) bacteriophage R17; c) bacteriophage fr; d) bacteriophage GA; e) bacteriophage SP; f) bacteriophage MS2; g) bacteriophage Ml 1; h) bacteriophage MX1; i) bacteriophage NL95; k) bacteriophage f2; and 1) bacteriophage PP7.
- the virus-like particle comprises, or alternatively consists essentially of, or alternatively consists of recombinant proteins, or fragments thereof, of the RNA-bacteriophage Q ⁇ or of the RNA-bacteriophage fr.
- the recombinant proteins comprise, or alternatively consist essentially of, or alternatively consist of coat proteins of RNA phages.
- RNA-phage coat proteins forming capsids or VLPs, or fragments of the bacteriophage coat proteins compatible with self-assembly into a capsid or a VLP are, therefore, further preferred embodiments of the present invention.
- Bacteriophage Q ⁇ coat proteins for example, can be expressed recombinantly in E. coli . Further, upon such expression these proteins spontaneously form capsids. Additionally, these capsids form a structure with an inherent repetitive organization.
- bacteriophage coat proteins which can be used to prepare compositions of the invention include the coat proteins of RNA bacteriophages such as bacteriophage Q ⁇ (SEQ ID NO:10; PIR Database, Accession No. VCBPQ ⁇ referring to Q ⁇ CP and SEQ ID NO: 11; Accession No. AAA16663 referring to Q ⁇ A1 protein), bacteriophage R17 (SEQ ID NO:12; PIR Accession No. VCBPR7), bacteriophage fr (SEQ ID NO:13; PIR Accession No. VCBPFR), bacteriophage GA (SEQ ID NO:14; GenBank Accession No.
- bacteriophage Q ⁇ SEQ ID NO:10; PIR Database, Accession No. VCBPQ ⁇ referring to Q ⁇ CP and SEQ ID NO: 11; Accession No. AAA16663 referring to Q ⁇ A1 protein
- bacteriophage R17 SEQ ID NO:12; PIR Accession No. VCBPR7
- bacteriophage SP SEQ ID NO:15; GenBank Accession No. CAA30374 referring to SP CP and SEQ ID NO: 16; Accession No. referring to SP A1 protein
- bacteriophage MS2 SEQ ID NO:17; PIR Accession No. VCBPM2
- bacteriophage M11 SEQ ID NO:18; GenBank Accession No. AAC06250
- bacteriophage MX1 SEQ ID NO:19; GenBank Accession No. AAC14699
- bacteriophage NL95 SEQ ID NO:20; GenBank Accession No. AAC14704
- bacteriophage f2 SEQ ID NO: 21; GenBank Accession No.
- bacteriophage PP7 SEQ ID NO: 22
- A1 protein of bacteriophage Q ⁇ or C-terminal truncated forms missing as much as 100, 150 or 180 amino acids from its C-terminus may be incorporated in a capsid assembly of Q ⁇ coat proteins.
- the percentage of Q ⁇ A1 protein relative to Q ⁇ CP in the capsid assembly will be limited, in order to ensure capsid formation.
- Q ⁇ coat protein has also been found to self-assemble into capsids when expressed in E. coli (Kozlovska T M. et al., GENE 137: 133-137 (1993)).
- the capsid contains 180 copies of the coat protein, which are linked in covalent pentamers and hexamers by disulfide bridges (Golmohammadi, R.
- Capsids or VLPs made from recombinant Q ⁇ coat protein may contain, however, subunits not linked via disulfide links to other subunits within the capsid, or incompletely linked.
- bands corresponding to monomeric Q ⁇ coat protein as well as bands corresponding to the hexamer or pentamer of Q ⁇ coat protein are visible. Incompletely disulfide-linked subunits could appear as dimer, trimer or even tetramer bands in non-reducing SDS-PAGE.
- Q ⁇ capsid protein also shows unusual resistance to organic solvents and denaturing agents. Surprisingly, we have observed that DMSO and acetonitrile concentrations as high as 30%, and Guanidinium concentrations as high as 1 M do not affect the stability of the capsid.
- the high stability of the capsid of Q ⁇ coat protein is an advantageous feature, in particular, for its use in immunization and vaccination of mammals and humans in accordance of the present invention.
- RNA phage coat proteins have also been shown to self-assemble upon expression in a bacterial host (Kastelein, RA. et al., Gene 23: 245-254 (1983), Kozlovskaya, T M. et al., Dokl. Akad. Nauk SSSR 287: 452-455 (1986), Adhin, MR. et al., Virology 170: 238-242 (1989), Ni, CZ., et al., Protein Sci. 5: 2485-2493 (1996), Priano, C. et al., J. Mol. Biol. 249: 283-297 (1995)).
- the Q ⁇ phage capsid contains, in addition to the coat protein, the so called read-through protein A1 and the maturation protein A2.
- A1 is generated by suppression at the UGA stop codon and has a length of 329 aa.
- the capsid of phage Q ⁇ recombinant coat protein used in the invention is devoid of the A2 lysis protein, and contains RNA from the host.
- the coat protein of RNA phages is an RNA binding protein, and interacts with the stem loop of the ribosomal binding site of the replicase gene acting as a translational repressor during the life cycle of the virus. The sequence and structural elements of the interaction are known (Witherell, G W. & Uhlenbeck, O C.
- the virus-like particle comprises, or alternatively consists essentially of, or alternatively consists of recombinant proteins, or fragments thereof, of a RNA-phage, wherein the recombinant proteins comprise, consist essentially of or alternatively consist of mutant coat proteins of a RNA phage, preferably of mutant coat proteins of the RNA phages mentioned above.
- mutant coat proteins of the RNA phage have been modified by removal of at least one lysine residue by way of substitution, or by addition of at least one lysine residue by way of substitution; alternatively, the mutant coat proteins of the RNA phage have been modified by deletion of at least one lysine residue, or by addition of at least one lysine residue by way of insertion.
- the virus-like particle comprises, or alternatively consists essentially of, or alternatively consists of recombinant proteins, or fragments thereof, of the RNA-bacteriophage Q ⁇ , wherein the recombinant proteins comprise, or alternatively consist essentially of, or alternatively consist of coat proteins having an amino acid sequence of SEQ ID NO:10, or a mixture of coat proteins having amino acid sequences of SEQ ID NO:10 and of SEQ ID NO: 11 or mutants of SEQ ID NO: 11 and wherein the N-terminal methionine is preferably cleaved.
- the virus-like particle comprises, consists essentially of or alternatively consists of recombinant proteins of Q ⁇ , or fragments thereof, wherein the recombinant proteins comprise, or alternatively consist essentially of, or alternatively consist of mutant Q ⁇ coat proteins.
- these mutant coat proteins have been modified by removal of at least one lysine residue by way of substitution, or by addition of at least one lysine residue by way of substitution.
- these mutant coat proteins have been modified by deletion of at least one lysine residue, or by addition of at least one lysine residue by way of insertion.
- Q ⁇ mutants for which exposed lysine residues are replaced by arginines can also be used for the present invention.
- the following Q ⁇ coat protein mutants and mutant Q ⁇ VLPs can, thus, be used in the practice of the invention: “Q ⁇ -240” (Lys13-Arg; SEQ ID NO:23), “Q ⁇ -243” (Asn 10-Lys; SEQ ID NO:24), “Q ⁇ -250” (Lys 2-Arg, Lys13-Arg; SEQ ID NO:25), “Q ⁇ -251” (SEQ ID NO:26) and “Q ⁇ -259” (Lys 2-Arg, Lys16-Arg; SEQ ID NO:27).
- the virus-like particle comprises, consists essentially of or alternatively consists of recombinant proteins of mutant Q ⁇ coat proteins, which comprise proteins having an amino acid sequence selected from the group of a) the amino acid sequence of SEQ ID NO: 23; b) the amino acid sequence of SEQ ID NO:24; c) the amino acid sequence of SEQ ID NO: 25; d) the amino acid sequence of SEQ ID NO:26; and e) the amino acid sequence of SEQ ID NO: 27.
- mutant Q ⁇ coat protein VLPs and capsids are disclosed in pending U.S. application Ser. No. 10/050,902 filed on Jan. 18, 2002. In particular is hereby referred to Example 18 of above mentioned application.
- the virus-like particle comprises, or alternatively consists essentially of, or alternatively consists of recombinant proteins of Q ⁇ , or fragments thereof, wherein the recombinant proteins comprise, consist essentially of or alternatively consist of a mixture of either one of the foregoing Q ⁇ mutants and the corresponding A1 protein.
- the virus-like particle comprises, or alternatively essentially consists of, or alternatively consists of recombinant proteins, or fragments thereof, of RNA-phage AP205.
- the AP205 genome consists of a maturation protein, a coat protein, a replicase and two open reading frames not present in related phages; a lysis gene and an open reading frame playing a role in the translation of the maturation gene (Klovins, J., et al., J. Gen. Virol. 83: 1523-33 (2002)).
- AP205 coat protein can be expressed from plasmid pAP283-58 (SEQ ID NO: 79), which is a derivative of pQb10 (Kozlovska, T. M. et al., Gene 137:133-37 (1993)), and which contains an AP205 ribosomal binding site.
- AP205 coat protein may be cloned into pQb185, downstream of the ribosomal binding site present in the vector. Both approaches lead to expression of the protein and formation of capsids as described in the co-pending US provisional patent application with the title “Molecular Antigen Arrays” (Application No. 60/396,126) and having been filed on Jul. 17, 2002, which is incorporated by reference in its entirety.
- Vectors pQb10 and pQb185 are vectors derived from pGEM vector, and expression of the cloned genes in these vectors is controlled by the trp promoter (Kozlovska, T. M. et al., Gene 137:133-37 (1993)).
- Plasmid pAP283-58 (SEQ ID NO:79) comprises a putative AP205 ribosomal binding site in the following sequence, which is downstream of the XbaI site, and immediately upstream of the ATG start codon of the AP205 coat protein: tctagaATTTTCTGCGCACCCAT CCCGGGTGGCGCCCAAAGT GAGGAA AATCACatg.
- the vector pQb185 comprises a Shine Delagarno sequence downstream from the XbaI site and upstream of the start codon (tctagaTTAACCCAACGCGT AGGAG TCAGGCCatg, Shine Delagarno sequence underlined).
- the virus-like particle comprises, or alternatively essentially consists of, or alternatively consists of recombinant coat proteins, or fragments thereof, of the RNA-phage AP205.
- This preferred embodiment of the present invention thus, comprises AP205 coat proteins that form capsids.
- Such proteins are recombinantly expressed, or prepared from natural sources.
- AP205 coat proteins produced in bacteria spontaneously form capsids, as evidenced by Electron Microscopy (EM) and immunodiffusion.
- the structural properties of the capsid formed by the AP205 coat protein (SEQ ID NO: 80) and those formed by the coat protein of the AP205 RNA phage are nearly indistinguishable when seen in EM.
- AP205 VLPs are highly immunogenic, and can be linked with antigens and/or antigenic determinants to generate vaccine constructs displaying the antigens and/or antigenic determinants oriented in a repetitive manner. High titers are elicited against the so displayed antigens showing that bound antigens and/or antigenic determinants are accessible for interacting with antibody molecules and are immunogenic.
- the virus-like particle comprises, or alternatively essentially consists of, or alternatively consists of recombinant mutant coat proteins, or fragments thereof, of the RNA-phage AP205.
- Assembly-competent mutant forms of AP205 VLPs including AP205 coat protein with the subsitution of proline at amino acid 5 to threonine (SEQ ID NO: 81), may also be used in the practice of the invention and leads to a further preferred embodiment of the invention.
- AP205 P5-T mutant coat protein can be expressed from plasmid pAP281-32 (SEQ ID No. 82), which is derived directly from pQb185, and which contains the mutant AP205 coat protein gene instead of the Q ⁇ coat protein gene.
- Vectors for expression of the AP205 coat protein are transfected into E. coli for expression of the AP205 coat protein.
- Suitable E. coli strains include, but are not limited to, E. coli K802, JM 109, RR1.
- Suitable vectors and strains and combinations thereof can be identified by testing expression of the coat protein and mutant coat protein, respectively, by SDS-PAGE and capsid formation and assembly by optionally first purifying the capsids by gel filtration and subsequently testing them in an immunodiffusion assay (Ouchterlony test) or Electron Microscopy (Kozlovska, T. M. et al., Gene 137:133-37 (1993)).
- AP205 coat proteins expressed from the vectors pAP 2 83-58 and AP281-32 may be devoid of the initial Methionine amino-acid, due to processing in the cytoplasm of E. coli . Cleaved, uncleaved forms of AP205 VLP, or mixtures thereof are further preferred embodiments of the invention.
- the virus-like particle comprises, or alternatively essentially consists of, or alternatively consists of a mixture of recombinant coat proteins, or fragments thereof, of the RNA-phage AP205 and of recombinant mutant coat proteins, or fragments thereof, of the RNA-phage AP205.
- the virus-like particle comprises, or alternatively essentially consists of, or alternatively consists of fragments of recombinant coat proteins or recombinant mutant coat proteins of the RNA-phage AP205.
- Recombinant AP205 coat protein fragments capable of assembling into a VLP and a capsid, respectively are also useful in the practice of the invention. These fragments may be generated by deletion, either internally or at the termini of the coat protein and mutant coat protein, respectively. Insertions in the coat protein and mutant coat protein sequence or fusions of antigen sequences to the coat protein and mutant coat protein sequence, and compatible with assembly into a VLP, are further embodiments of the invention and lead to chimeric AP205 coat proteins, and particles, respectively. The outcome of insertions, deletions and fusions to the coat protein sequence and whether it is compatible with assembly into a VLP can be determined by electron microscopy.
- the particles formed by the AP205 coat protein, coat protein fragments and chimeric coat proteins described above can be isolated in pure form by a combination of fractionation steps by precipitation and of purification steps by gel filtration using e.g. Sepharose CL-4B, Sepharose CL-2B, Sepharose CL-6B columns and combinations thereof as described in the co-pending US provisional patent application with the title “Molecular Antigen Arrays (Application No. 60/396,126) and having been filed on Jul. 17, 2002, which is incorporated by reference in its entirety.
- Other methods of isolating virus-like particles are known in the art, and may be used to isolate the virus-like particles (VLPs) of bacteriophage AP205.
- VLPs virus-like particles
- the use of ultracentrifugation to isolate VLPs of the yeast retrotransposon Ty is described in U.S. Pat. No. 4,918,166, which is incorporated by reference herein in its entirety.
- RNA-phage coat proteins can be modified such that one or more reactive amino acid residues can be inserted by way of insertion or substitution.
- those modified forms of bacteriophage coat proteins can also be used for the present invention.
- variants of proteins which form capsids or capsid-like structures e.g., coat proteins of bacteriophage Q ⁇ , bacteriophage R17, bacteriophage fr, bacteriophage GA, bacteriophage SP, and bacteriophage MS2, bacteriophage AP 205) can also be used to prepare compositions of the present invention.
- the invention further includes compositions and vaccine compositions, respectively, which further includes variants of proteins which form capsids or capsid-like structures, as well as methods for preparing such compositions and vaccine compositions, respectively, individual protein subunits used to prepare such compositions, and nucleic acid molecules which encode these protein subunits.
- variant forms of wild-type proteins which form capsids or capsid-like structures and retain the ability to associate and form capsids or capsid-like structures.
- compositions and vaccine compositions comprising proteins, which comprise, or alternatively consist essentially of, or alternatively consist of amino acid sequences which are at least 80%, 85%, 90%, 95%, 97%, or 99% identical to wild-type proteins which form ordered arrays and have an inherent repetitive structure, respectively.
- nucleic acid molecules which encode proteins used to prepare compositions of the present invention.
- the invention further includes compositions comprising proteins, which comprise, or alternatively consist essentially of, or alternatively consist of amino acid sequences which are at least 80%, 85%, 90%, 95%, 97%, or 99% identical to any of the amino acid sequences shown in SEQ ID NOs:10-27.
- Proteins suitable for use in the present invention also include C-terminal truncation mutants of proteins which form capsids or capsid-like structures, or VLPs.
- Specific examples of such truncation mutants include proteins having an amino acid sequence shown in any of SEQ ID NOs:10-27 where 1, 2, 5, 7, 9, 10, 12, 14, 15, or 17 amino acids have been removed from the C-terminus.
- theses C-terminal truncation mutants will retain the ability to form capsids or capsid-like structures.
- proteins suitable for use in the present invention also include N-terminal truncation mutants of proteins which form capsids or capsid-like structures.
- Specific examples of such truncation mutants include proteins having an amino acid sequence shown in any of SEQ ID NOs:10-27 where 1, 2, 5, 7, 9, 10, 12, 14, 15, or 17 amino acids have been removed from the N-terminus.
- these N-terminal truncation mutants will retain the ability to form capsids or capsid-like structures.
- Additional proteins suitable for use in the present invention include N- and C-terminal truncation mutants which form capsids or capsid-like structures.
- Suitable truncation mutants include proteins having an amino acid sequence shown in any of SEQ ID NOs:10-27 where 1, 2, 5, 7, 9, 10, 12, 14, 15, or 17 amino acids have been removed from the N-terminus and 1, 2, 5, 7, 9, 10, 12, 14, 15, or 17 amino acids have been removed from the C-terminus.
- these N-terminal and C-terminal truncation mutants will retain the ability to form capsids or capsid-like structures.
- compositions comprising proteins which comprise, or alternatively consist essentially of, or alternatively consist of, amino acid sequences which are at least 80%, 85%, 90%, 95%, 97%, or 99% identical to the above described truncation mutants.
- the invention thus includes compositions and vaccine compositions prepared from proteins which form capsids or VLPs, methods for preparing these compositions from individual protein subunits and VLPs or capsids, methods for preparing these individual protein subunits, nucleic acid molecules which encode these subunits, and methods for vaccinating and/or eliciting immunological responses in individuals using these compositions of the present invention.
- Fragments of VLPs which retain the ability to induce an immune response can comprise, or alternatively consist of, polypeptides which are about 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 250, 300, 350, 400, 450 or 500 amino acids in length, but will obviously depend on the length of the sequence of the subunit composing the VLP. Examples of such fragments include fragments of proteins discussed herein which are suitable for the preparation of the immune response enhancing composition.
- the VLP's are free of a lipoprotein envelope or a lipoprotein-containing envelope. In a further preferred embodiment, the VLP's are free of an envelope altogether.
- the lack of a lipoprotein envelope or lipoprotein-containing envelope and, in particular, the complete lack of an envelope leads to a more defined virus-like particle in its structure and composition. Such more defined virus-like particles, therefore, may minimize side-effects. Moreover, the lack of a lipoprotein-containing envelope or, in particular, the complete lack of an envelope avoids or minimizes incorporation of potentially toxic molecules and pyrogens within the virus-like particle.
- the invention includes virus-like particles or recombinant forms thereof. Skilled artisans have the knowledge to produce such particles and attach antigens thereto. By way of providing other examples, the invention provides herein for the production of Hepatitis B virus-like particles as virus-like particles (Example 1).
- the particles used in compositions of the invention are composed of a Hepatitis B capsid (core) protein (HBcAg) or a fragment of a HBcAg which has been modified to either eliminate or reduce the number of free cysteine residues.
- HBcAg Hepatitis B capsid
- Zhou et al. J. Virol. 66:5393-5398 (1992) demonstrated that HBcAgs which have been modified to remove the naturally resident cysteine residues retain the ability to associate and form multimeric structures.
- core particles suitable for use in compositions of the invention include those comprising modified HBcAgs, or fragments thereof, in which one or more of the naturally resident cysteine residues have been either deleted or substituted with another amino acid residue (e.g., a serine residue).
- the HBcAg is a protein generated by the processing of a Hepatitis B core antigen precursor protein.
- a number of isotypes of the HBcAg have been identified and their amino acids sequences are readily available to those skilled in the art.
- the HBcAg protein having the amino acid sequence shown in FIG. 1 is 185 amino acids in length and is generated by the processing of a 212 amino acid Hepatitis B core antigen precursor protein. This processing results in the removal of 29 amino acids from the N-terminus of the Hepatitis B core antigen precursor protein.
- the HBcAg protein that is 185 amino acids in length is generated by the processing of a 214 amino acid Hepatitis B core antigen precursor protein.
- vaccine compositions of the invention will be prepared using the processed form of a HBcAg (i.e., a HBcAg from which the N-terminal leader sequence of the Hepatitis B core antigen precursor protein have been removed).
- the HBcAgs when HBcAgs are produced under conditions where processing will not occur, the HBcAgs will generally be expressed in “processed” form.
- bacterial systems such as E. coli
- leader sequences also referred to as “signal peptides,” of proteins which are normally expressed in eukaryotic cells.
- E. coli expression system directing expression of the protein to the cytoplasm is used to produce HBcAgs of the invention, these proteins will generally be expressed such that the N-terminal leader sequence of the Hepatitis B core antigen precursor protein is not present.
- Hepatitis B virus-like particles which can be used for the present invention, is disclosed, for example, in WO 00/32227, and hereby in particular in Examples 17 to 19 and 21 to 24, as well as in WO 01/85208, and hereby in particular in Examples 17 to 19, 21 to 24, 31 and 41, and in pending U.S. application Ser. No. 10/050,902 filed on Jan. 18, 2002. For the latter application, it is in particular referred to Example 23, 24, 31 and 51. All three documents are explicitly incorporated herein by reference.
- the present invention also includes HBcAg variants which have been modified to delete or substitute one or more additional cysteine residues.
- the vaccine compositions of the invention include compositions comprising HBcAgs in which cysteine residues not present in the amino acid sequence shown in FIG. 1 have been deleted.
- HBcAg variants suitable for use in the practice of the present invention have been identified. Yuan et al., ( J. Virol. 73:10122-10128 (1999)), for example, describe variants in which the isoleucine residue at position corresponding to position 97 in SEQ ID NO:28 is replaced with either a leucine residue or a phenylalanine residue.
- HBcAg variants differ in amino acid sequence at a number of positions, including amino acid residues which corresponds to the amino acid residues located at positions 12, 13, 21, 22, 24, 29, 32, 33, 35, 38, 40, 42, 44, 45, 49, 51, 57, 58, 59, 64, 66, 67, 69, 74, 77, 80, 81, 87, 92, 93, 97, 98, 100, 103, 105, 106, 109, 113, 116, 121, 126, 130, 133, 135, 141, 147, 149, 157, 176, 178, 182 and 183 in SEQ ID NO:77.
- Further HBcAg variants suitable for use in the compositions of the invention, and which may be further modified according to the disclosure of this specification are described in WO 00/198333, WO 00/177158 and WO 00/214478.
- HBcAgs suitable for use in the present invention can be derived from any organism so long as they are able to enclose or to be coupled or otherwise attached to, in particular as long as they are capable of packaging, an unmethylated CpG-containing oligonucleotide and induce an immune response.
- HBcAgs As noted above, generally processed HBcAgs (i.e., those which lack leader sequences) will be used in the vaccine compositions of the invention.
- the present invention includes vaccine compositions, as well as methods for using these compositions, which employ the above described variant HBcAgs.
- HBcAg variants which are capable of associating to form dimeric or multimeric structures.
- the invention further includes vaccine compositions comprising HBcAg polypeptides comprising, or alternatively consisting of, amino acid sequences which are at least 80%, 85%, 90%, 95%, 97% or 99% identical to any of the wild-type amino acid sequences, and forms of these proteins which have been processed, where appropriate, to remove the N-terminal leader sequence.
- amino acid sequence of a polypeptide has an amino acid sequence that is at least 80%, 85%, 90%, 95%, 97% or 99% identical to one of the wild-type amino acid sequences, or a subportion thereof, can be determined conventionally using known computer programs such the Bestfit program.
- Bestfit or any other sequence alignment program to determine whether a particular sequence is, for instance, 95% identical to a reference amino acid sequence, the parameters are set such that the percentage of identity is calculated over the full length of the reference amino acid sequence and that gaps in homology of up to 5% of the total number of amino acid residues in the reference sequence are allowed.
- the HBcAg variants and precursors having the amino acid sequences set out in SEQ ID NOs: 29-72 and 73-76 are relatively similar to each other.
- reference to an amino acid residue of a HBcAg variant located at a position which corresponds to a particular position in SEQ ID NO:77 refers to the amino acid residue which is present at that position in the amino acid sequence shown in SEQ ID NO:77.
- the homology between these HBcAg variants is for the most part high enough among Hepatitis B viruses that infect mammals so that one skilled in the art would have little difficulty reviewing both the amino acid sequence shown in SEQ ID NO:77 and in FIG.
- the HBcAg amino acid sequence shown in SEQ ID NO:73 which shows the amino acid sequence of a HBcAg derived from a virus which infect woodchucks, has enough homology to the HBcAg having the amino acid sequence shown in SEQ ID NO:77 that it is readily apparent that a three amino acid residue insert is present in SEQ ID NO:73 between amino acid residues 155 and 156 of SEQ ID NO:77.
- the invention also includes vaccine compositions which comprise HBcAg variants of Hepatitis B viruses which infect birds, as wells as vaccine compositions which comprise fragments of these HBcAg variants.
- vaccine compositions which comprise HBcAg variants of Hepatitis B viruses which infect birds, as wells as vaccine compositions which comprise fragments of these HBcAg variants.
- cysteine residues naturally present in these polypeptides could be either substituted with another amino acid residue or deleted prior to their inclusion in vaccine compositions of the invention.
- cysteine residues of the Hepatitis B virus capsid protein have been either deleted or substituted with another amino acid residue.
- compositions and vaccine compositions, respectively, of the invention will contain HBcAgs from which the C-terminal region (e.g., amino acid residues 145-185 or 150-185 of SEQ ID NO: 77) has been removed.
- additional modified HBcAgs suitable for use in the practice of the present invention include C-terminal truncation mutants. Suitable truncation mutants include HBcAgs where 1, 5, 10, 15, 20, 25, 30, 34, 35, amino acids have been removed from the C-terminus.
- HBcAgs suitable for use in the practice of the present invention also include N-terminal truncation mutants.
- Suitable truncation mutants include modified HBcAgs where 1, 2, 5, 7, 9, 10, 12, 14, 15, or 17 amino acids have been removed from the N-terminus.
- HBcAgs suitable for use in the practice of the present invention include N- and C-terminal truncation mutants. Suitable truncation mutants include HBcAgs where 1, 2, 5, 7, 9, 10, 12, 14, 15, and 17 amino acids have been removed from the N-terminus and 1, 5, 10, 15, 20, 25, 30, 34, 35 amino acids have been removed from the C-terminus.
- compositions and vaccine compositions comprising HBcAg polypeptides comprising, or alternatively essentially consisting of, or alternatively consisting of, amino acid sequences which are at least 80%, 85%, 90%, 95%, 97%, or 99% identical to the above described truncation mutants.
- compositions of the invention are prepared using a HBcAg comprising, or alternatively consisting of, amino acids 1-144, or 1-149, 1-185 of SEQ ID NO:77, which is modified so that the amino acids corresponding to positions 79 and 80 are replaced with a peptide having the amino acid sequence of Gly-Gly-Lys-Gly-Gly (SEQ ID NO:78).
- compositions are particularly useful in those embodiments where an antigenic determinant is coupled to a VLP of HBcAg.
- cysteine residues at positions 48 and 107 of SEQ ID NO:77 are mutated to serine.
- the invention further includes compositions comprising the corresponding polypeptides having amino acid sequences shown in any of SEQ ID NOs:29-74 which also have above noted amino acid alterations. Further included within the scope of the invention are additional HBcAg variants which are capable of associating to form a capsid or VLP and have the above noted amino acid alterations.
- compositions and vaccine compositions comprising HBcAg polypeptides which comprise, or alternatively consist of, amino acid sequences which are at least 80%, 85%, 90%, 95%, 97% or 99% identical to any of the wild-type amino acid sequences, and forms of these proteins which have been processed, where appropriate, to remove the N-terminal leader sequence and modified with above noted alterations.
- compositions or vaccine compositions of the invention may comprise mixtures of different HBcAgs.
- these vaccine compositions may be composed of HBcAgs which differ in amino acid sequence.
- vaccine compositions could be prepared comprising a “wild-type” HBcAg and a modified HBcAg in which one or more amino acid residues have been altered (e.g., deleted, inserted or substituted).
- preferred vaccine compositions of the invention are those which present highly ordered and repetitive antigen arrays.
- the invention is based on the surprising finding that immunostimulatory substances, preferably immunostimulatory nucleic acids and even more preferably DNA oligonucleotides can be packaged into VLPs.
- the nucleic acids present in VLPs can be replaced specifically by the immunostimulatory substances, preferably by the immunostimulatory nucleic acids and even more preferably by the DNA-oligonucleotides containing CpG motifs.
- the CpG-VLPs are dramatically more immunogenic and elicit more specific effects than their CpG-free counterparts and induce enhanced B and T cell responses.
- the immune response against antigens coupled, fused or attached otherwise to the VLPs is similarly enhanced as the immune response against the VLP itself.
- the T cell responses against both the VLPs and antigens are especially directed to the Th1 type.
- the packaged nucleic acids and CpGs, respectively are protected from degradation, i.e., they are more stable.
- non-specific activation of cells from the innate immune system is dramatically reduced.
- the innate immune system has the capacity to recognize invariant molecular pattern shared by microbial pathogens. Recent studies have revealed that this recognition is a crucial step in inducing effective immune responses.
- the main mechanism by which microbial products augment immune responses is to stimulate APC, expecially dendritic cells to produce proinflammatory cytokines and to expres high levels costimulatory molecules for T cells. These activated dendritic cells subsequently initiate primary T cell responses and dictate the type of T cell-mediated effector function.
- RNA synthesized by various types of viruses represent important members of the microbial components that enhance immune responses.
- Synthetic double stranded (ds) RNA such as polyinosinic-polycytidylic acid (poly I:C) are capable of inducing dendritic cells to produce proinflammatory cytokines and to express high levels of costimulatory molecules.
- Preferred ribonucleic acid encompass polyinosinic-polycytidylic acid double-stranded RNA (poly I:C).
- Ribonucleic acids and modifications thereof as well as methods for their production have been described by Levy, H. B (Methods Enzymol. 1981, 78:242-251), DeClercq, E (Methods Enzymol. 1981,78:227-236) and Torrence, P. F. (Methods Enzymol 1981;78:326-331) and references therein. Ribonucleic acids can be isolated from organisms.
- Ribonucleic acids also encompass further synthetic ribonucleic acids, in particular synthetic poly (I:C) oligonucleotides that have been rendered nuclease resistant by modification of the phosphodiester backbone, in particular by phosphorothioate modifications.
- the ribose backbone of poly (I:C) is replaced by a deoxyribose.
- TLR active toll-like receptors
- TLR2 is activated by peptidoglycans, lipoproteins, lipoteichonic acid and Zymosan
- TLR3 is activated by double-stranded RNA such as poly (I:C)
- TLR4 is activated by lipopolysaccharide, lipoteichoic acids and taxol
- TLR5 is activated by bacterial flagella, especially the flagellin protein
- TLR6 is activated by peptidoglycans
- TLR7 is activated by imiquimoid and imidazoquinoline compounds, such as R418 and TLR9 is activated by bacterial DNA, in particular CpG DNA.
- Ligands for TLR1, TLR8 and TLR10 are not known so far. However, recent reports indicate that same receptors can react with different ligands and that further receptors are present. The above list of ligands is not exhaustive and further ligands are within the knowledge of the person skilled in the art.
- the unmethylated CpG-containing oligonucleotide comprises the sequence:
- X 1 , X 2 , X 3 and X 4 are any nucleotide.
- the oligonucleotide can comprise about 6 to about 100,000 nucleotides, preferably about 6 to about 2000 nucleotides, more preferably about 20 to about 2000 nucleotides, and even more preferably comprises about 20 to about 300 nucleotides.
- the oligonucleotide can comprise more than 100 to about 2000 nucleotides, preferably more than 100 to about 1000 nucleotides, and more preferably more than 100 to about 500 nucleotides.
- the CpG-containing oligonucleotide contains one or more phosphorothioate modifications of the phosphate backbone.
- a CpG-containing oligonucleotide having one or more phosphate backbone modifications or having all of the phosphate backbone modified and a CpG-containing oligonucleotide wherein one, some or all of the nucleotide phosphate backbone modifications are phosphorothioate modifications are included within the scope of the present invention.
- the CpG-containing oligonucleotide can also be recombinant, genomic, synthetic, cDNA, plasmid-derived and single or double stranded.
- the nucleic acids can be synthesized de novo using any of a number of procedures well known in the art. For example, the b-cyanoethyl phosphoramidite method (Beaucage, S. L., and Caruthers, M. H., Tet. Let. 22:1859 (1981); nucleoside H-phosphonate method (Garegg et al., Tet. Let. 27:4051-4054 (1986); Froehler et al., Nucl. Acid. Res.
- oligonucleotide synthesizers available in the market.
- CpGs can be produced on a large scale in plasmids, (see Sambrook, T., et al., “Molecular Cloning: A Laboratory Manual,” Cold Spring Harbor laboratory Press, New York, 1989) which after being administered to a subject are degraded into oligonucleotides.
- Oligonucleotides can be prepared from existing nucleic acid sequences (e.g., genomic or cDNA) using known techniques, such as those employing restriction enzymes, exonucleases or endonucleases.
- the immunostimulatory substances, the immunostimulatory nucleic acids as well as the unmethylated CpG-containing oligonucleotide can be bound to the VLP by any way known is the art provided the composition enhances an immune response in an animal.
- the oligonucleotide can be bound either covalently or non-covalently.
- the VLP can enclose, fully or partially, the immunostimulatory substances, the immunostimulatory nucleic acids as well as the unmethylated CpG-containing oligonucleotide.
- the immunostimulatory nucleic acid as well as the unmethylated CpG-containing oligonucleotide can be bound to a VLP site such as an oligonucleotide binding site (either naturally or non-naturally occurring), a DNA binding site or a RNA binding site.
- the VLP site comprises an arginine-rich repeat.
- compositions of the invention are to activate dendritic cells for the purpose of enhancing a specific immune response against antigens.
- the immune response can be enhanced using ex vivo or in vivo techniques.
- the ex vivo procedure can be used on autologous or heterologous cells, but is preferably used on autologous cells.
- the dendritic cells are isolated from peripheral blood or bone marrow, but can be isolated from any source of dendritic cells. Ex vivo manipulation of dendritic cells for the purposes of cancer immunotherapy have been described in several references in the art, including Engleman, E.
- the dendritic cells can also be contacted with the inventive compositions using in vivo methods.
- the CpGs are administered in combination with the VLP optionally coupled, fused or otherwise attached to an antigen directly to a subject in need of immunotherapy.
- the VLPs/CpGs be administered in the local region of the tumor, which can be accomplished in any way known in the art, e.g., direct injection into the tumor.
- the inventive composition can further comprise an antigen or antigenic determinant bound to the virus-like particle.
- the invention provides for compositions that vary according to the antigen or antigenic determinant selected in consideration of the desired therapeutic effect. Very preferred antigens or antigenic determinants suitable for use in the present invention are disclosed in WO 00/32227, in WO 01/85208 and in WO 02/056905, the disclosures of which are herewith incorporated by reference in their entireties.
- the antigen can be any antigen of known or yet unknown provenance.
- the antigen can be isolated from bacteria, viruses or other pathogens or can be a recombinant antigen obtained from expression of suitable nucleic acid coding therefor. It can also be isolated from prions, tumors, self-molecules, non-peptidic hapten molecules, allergens and hormones. In a preferred embodiment, the antigen is a recombinant antigen. The selection of the antigen is, of course, dependent upon the immunological response desired and the host.
- the immune response is induced against the VLP itself.
- a virus-like particle is coupled, fused or otherwise attached to an antigen/immunogen against which an enhanced immune response is desired.
- the at least one antigen or antigenic determinant is fused to the virus-like particle.
- a VLP is typically composed of at least one subunit assembling into a VLP.
- the antigen or antigenic determinant is fused to at least one subunit of the virus-like particle or of a protein capable of being incorporated into a VLP generating a chimeric VLP-subunit-antigen fusion.
- Fusion of the antigen or antigenic determinant can be effected by insertion into the VLP subunit sequence, or by fusion to either the N- or C-terminus of the VLP-subunit or protein capable of being incorporated into a VLP.
- fusion proteins of a peptide to a VLP subunit the fusion to either ends of the subunit sequence or internal insertion of the peptide within the subunit sequence are encompassed.
- Fusion may also be effected by inserting antigen or antigenic determinant sequences into a variant of a VLP subunit where part of the subunit sequence has been deleted, that are further referred to as truncation mutants.
- Truncation mutants may have N- or C-terminal, or internal deletions of part of the sequence of the VLP subunit.
- the specific VLP HBcAg with, for example, deletion of amino acid residues 79 to 81 is a truncation mutant with an internal deletion. Fusion of antigens or antigenic determinants to either the N- or C-terminus of the truncation mutants VLP-subunits also lead to embodiments of the invention.
- fusion of an epitope into the sequence of the VLP subunit may also be effected by substitution, where for example for the specific VLP HBcAg, amino acids 79-81 are replaced with a foreign epitope.
- fusion as referred to hereinafter, may be effected by insertion of the antigen or antigenic determinant sequence in the sequence of a VLP subunit, by substitution of part of the sequence of the VLP subunit with the antigen or antigenic determinant, or by a combination of deletion, substitution or insertions.
- the chimeric antigen or antigenic determinant ⁇ VLP subunit will be in general capable of self-assembly into a VLP.
- VLP displaying epitopes fused to their subunits are also herein referred to as chimeric VLPs.
- the virus-like particle comprises or alternatively is composed of at least one VLP subunit.
- the virus-like particle comprises or alternatively is composed of a mixture of chimeric VLP subunits and non-chimeric VLP subunits, i.e. VLP subunits not having an antigen fused thereto, leading to so called mosaic particles. This may be advantageous to ensure formation of, and assembly to a VLP.
- the proportion of chimeric VLP-subunits may be 1, 2, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 95% or higher.
- Flanking amino acid residues may be added to either end of the sequence of the peptide or epitope to be fused to either end of the sequence of the subunit of a VLP, or for internal insertion of such peptidic sequence into the sequence of the subunit of a VLP.
- Glycine and serine residues are particularly favored amino acids to be used in the flanking sequences added to the peptide to be fused. Glycine residues confer additional flexibility, which may diminish the potentially destabilizing effect of fusing a foreign sequence into the sequence of a VLP subunit.
- the VLP is a Hepatitis B core antigen VLP.
- Fusion proteins of the antigen or antigenic determinant to either the N-terminus of a HBcAg (Neyrinck, S. et al., Nature Med. 5:1157-1163 (1999)) or insertions in the so called major immunodominant region (MIR) have been described (Pumpens, P. and Grens, E., Intervirology 44:98-114 (2001)), WO 01/98333), and are preferred embodiments of the invention.
- Naturally occurring variants of HBcAg with deletions in the MIR have also been described (Pumpens, P.
- HBcAg contains a long arginine tail (Pumpens, P. and Grens, E., Intervirology 44:98-114 (2001))which is dispensable for capsid assembly and capable of binding nucleic acids (Pumpens, P. and Grens, E., Intervirology 44:98-114 (2001)).
- HBcAg either comprising or lacking this arginine tail are both embodiments of the invention.
- the VLP is a VLP of a RNA phage.
- the major coat proteins of RNA phages spontaneously assemble into VLPs upon expression in bacteria, and in particular in E. coli .
- Specific examples of bacteriophage coat proteins which can be used to prepare compositions of the invention include the coat proteins of RNA bacteriophages such as bacteriophage Q ⁇ (SEQ ID NO:10; PIR Database, Accession No. VCBPQ ⁇ referring to Q ⁇ CP and SEQ ID NO: 11; Accession No. AAA16663 referring to Q ⁇ A1 protein) and bacteriophage fr (SEQ ID NO: 13; PIR Accession No. VCBPFR).
- the at least one antigen or antigenic determinant is fused to a Q ⁇ coat protein.
- Fusion protein constructs wherein epitopes have been fused to the C-terminus of a truncated form of the Al protein of Q ⁇ , or inserted within the A1 protein have been described (Kozlovska, T. M., et al., Intervirology, 39:9-15 (1996)).
- the A1 protein is generated by suppression at the UGA stop codon and has a length of 329 aa, or 328 aa, if the cleavage of the N-terminal methionine is taken into account.
- the production of mosaic particles may be effected in a number of ways. Kozlovska et al., Intervirology, 39:9-15 (1996), describe three methods, which all can be used in the practice of the invention.
- efficient display of the fused epitope on the VLPs is mediated by the expression of the plasmid encoding the Q ⁇ A1 protein fusion having a UGA stop codong between CP and CP extension in a E. coli strain harboring a plasmid encoding a cloned UGA suppressor tRNA which leads to translation of the UGA codon into Trp (pISM3001 plasmid (Smiley B.
- CP gene stop codon is modified into UAA, and a second plasmid expressing the A1 protein-antigen fusion is cotransformed.
- the second plasmid encodes a different antibiotic resistance and the origin of replication is compatible with the first plasmid (Kozlovska, T. M., et al., Intervirology 39:9-15 (1996)).
- CP and the A1 protein-antigen fusion are encoded in a bicistronic manner, operatively linked to a promoter such as the Trp promoter, as described in FIG. 1 of Kozlovska et al., Intervirology, 39:9-15 (1996).
- the antigen or antigenic determinant is inserted between amino acid 2 and 3 (numbering of the cleaved CP, that is wherein the N-terminal methionine is cleaved) of the fr CP, thus leading to an antigen or antigenic determinant ⁇ fr CP fusion protein.
- Vectors and expression systems for construction and expression of fr CP fusion proteins self-assembling to VLP and useful in the practice of the invention have been described (Pushko P. et al., Prot. Eng. 6:883-891 (1993)).
- the antigen or antigenic determinant sequence is inserted into a deletion variant of the fr CP after amino acid 2, wherein residues 3 and 4 of the fr CP have been deleted (Pushko P. et al., Prot. Eng. 6:883-891 (1993)).
- the antigen or antigenic determinant is fused to a capsid protein of papillomavirus.
- the antigen or antigenic determinant is fused to the major capsid protein LI of bovine papillomavirus type 1 (BPV-1).
- BPV-1 bovine papillomavirus type 1
- BPV-1 L1-antigen fusion protein which is a preferred embodiment of the invention. Cloning in a baculovirus vector and expression in baculovirus infected Sf9 cells has been described, and can be used in the practice of the invention (Chackerian, B. et al., Proc. Natl. Acad. Sci. USA 96:2373-2378 (1999), WO 00/23955).
- Purification of the assembled particles displaying the fused antigen or antigenic determinant can be performed in a number of ways, such as for example gel filtration or sucrose gradient ultracentrifugation (Chackerian, B. et al., Proc. Natl. Acad. Sci. USA 96:2373-2378 (1999), WO 00/23955).
- the antigen or antigenic determinant is fused to a Ty protein capable of being incorporated into a Ty VLP.
- the antigen or antigenic determinant is fused to the p1 or capsid protein encoded by the TYA gene (Roth, J. F., Yeast 16:785-795 (2000)).
- the yeast retrotransposons Ty1, 2, 3 and 4 have been isolated from Saccharomyces Serevisiae , while the retrotransposon Tf1 has been isolated from Schizosaccharomyces Pombae (Boeke, J. D. and Sandmeyer, S.
- the retrotransposons Ty1 and 2 are related to the copia class of plant and animal elements, while Ty3 belongs to the gypsy family of retrotransposons, which is related to plants and animal retroviruses.
- the p1 protein also referred to as Gag or capsid protein, has a length of 440 amino acids. P1 is cleaved during maturation of the VLP at position 408, leading to the p2 protein, the essential component of the VLP.
- Fusion proteins to p1 and vectors for the expression of said fusion proteins in Yeast have been described (Adams, S. E., et al., Nature 329:68-70 (1987)). So, for example, an antigen or antigenic determinant may be fused to p1 by inserting a sequence coding for the antigen or antigenic determinant into the BamH1 site of the pMA5620 plasmid (Adams, S. E., et al., Nature 329:68-70 (1987)).
- fusion proteins comprising amino acids 1-381 of p1 of Ty1-15, fused C-terminally to the N-terminus of the foreign epitope.
- N-terminal fusion of an antigen or antigenic determinant, or internal insertion into the p1 sequence, or substitution of part of the p1 sequence are also meant to fall within the scope of the invention.
- insertion of an antigen or antigenic determinant into the Ty sequence between amino acids 30-31, 67-68, 113-114 and 132-133 of the Ty protein p1 leads to preferred embodiments of the invention.
- VLPs suitable for fusion of antigens or antigenic determinants are, for example, Retrovirus-like-particles (WO9630523), HIV2 Gag (Kang, Y. C., et al, Biol. Chem. 380:353-364 (1999)), Cowpea Mosaic Virus (Taylor, K. M. et al., Biol. Chem. 380:387-392 (1999)), parvovirus VP2 VLP (Rueda, P. et al., Virology 263:89-99 (1999)), HBsAg (U.S. Pat. No. 4,722,840, EP0020416B1).
- Examples of chimeric VLPs suitable for the practice of the invention are also those described in Intervirology 39:1 (1996). Further examples of VLPs contemplated for use in the invention are: HPV-1, HPV-6, HPV-11, HPV-16, HPV-18, HPV-33, HPV-45, CRPV, COPV, HIV GAG, Tobacco Mosaic Virus. Virus-like particles of SV-40, Polyomavirus, Adenovirus, Herpes Simplex Virus, Rotavirus and Norwalk virus have also been made, and chimeric VLPs of those VLPs comprising an antigen or antigenic determinant are also within the scope of the present invention.
- antigens fused to the virus-like particle by insertion within the sequence of the virus-like particle building monomer are also within the scope of the present invention.
- antigens can be inserted in a form of the virus-like particle building monomer containing deletions.
- the virus-like particle building monomer may not be able to form virus-like structures in the absence of the inserted antigen.
- recombinant DNA technology can be utilized to fuse a heterologous protein to a VLP protein (Kratz, P.A., et al., Proc. Natl. Acad. Sci. USA 96:1915 (1999)).
- the present invention encompasses VLPs recombinantly fused or chemically conjugated (including both covalently and non-covalently conjugations) to an antigen (or portion thereof, preferably at least 10, 20 or 50 amino acids) of the present invention to generate fusion proteins or conjugates.
- the fusion does not necessarily need to be direct, but can occur through linker sequences.
- linker sequences are typically added at one or both ends of the epitopes.
- linker sequences preferably comprise sequences recognized by the proteasome, proteases of the endosomes or other vesicular compartment of the cell.
- One way of coupling is by a peptide bond, in which the conjugate can be a contiguous polypeptide, i.e. a fusion protein.
- a fusion protein according to the present invention, different peptides or polypeptides are linked in frame to each other to form a contiguous polypeptide.
- a first portion of the fusion protein comprises an antigen or immunogen and a second portion of the fusion protein, either N-terminal or C-terminal to the first portion, comprises a VLP.
- internal insertion into the VLP with optional linking sequences on both ends of the antigen, can also be used in accordance with the present invention.
- HBcAg When HBcAg is used as the VLP, it is preferred that the antigen is linked to the C-terminal end of the HBcAg particle.
- LCMV lymphocytic choriomeningitis virus
- the 185 amino acids long wild type HBc protein assembles into highly structured particles composed of 180 subunits assuming icosahedral geometry.
- a flexible linker sequence e.g. a polyglycine/polyserine-containing sequence such as [Gly 4 Ser] 2 (Huston et al., Meth. Enzymol 203:46-88 (1991)) can be inserted into the fusion protein between the antigen and ligand.
- the fusion protein can be constructed to contain an “epitope tag”, which allows the fusion protein to bind an antibody (e.g. monoclonal antibody) for example for labeling or purification purposes.
- An example of an epitope tag is a Glu-Glu-Phe tripeptide which is recognized by the monoclonal antibody YL1 ⁇ 2.
- the invention also relates to the chimeric DNA which contains a sequence coding for the VLP and a sequence coding for the antigen/immunogen.
- the DNA can be expressed, for example, in insect cells transformed with Baculoviruses, in yeast or in bacteria. There are no restrictions regarding the expression system, of which a large selection is available for routine use. Preferably, a system is used which allows expression of the proteins in large amounts. In general, bacterial expression systems are preferred on account of their efficiency.
- a bacterial expression system suitable for use within the scope of the present invention is the one described by Clarke et al., J Gen. Virol. 71: 1109-1117 (1990); Borisova et al., J. Virol.
- yeast expression system An example of a suitable yeast expression system is the one described by Emr, Methods Enzymol. 185:231-3 (1990); Baculovirus systems, which have previously been used for preparing capsid proteins, are also suitable. Constitutive or inducible expression systems can be used. By the choice and possible modification of available expression systems it is possible to control the form in which the proteins are obtained.
- the antigen to which an enhanced immune response is desired is coupled, fused or otherwise attached in frame to the Hepatitis B virus capsid (core) protein (HBcAg).
- core protein HBV capsid
- the at least one antigen or antigenic determinant is bound to the virus-like particle by at least one covalent bond.
- the least one antigen or antigenic determinant is bound to the virus-like particle by at least one covalent bond, said covalent bond being a non-peptide bond leading to an antigen or antigenic determinant array and antigen or antigenic determinant ⁇ VLP conjugate, respectively.
- This antigen or antigenic determinant array and conjugate, respectively has typically and preferably a repetitive and ordered structure since the at least one antigen or antigenic determinant is bound to the VLP in an oriented manner.
- VLP array and conjugate The formation of a repetitive and ordered antigen or antigenic determinant ⁇ VLP array and conjugate, respectively, is ensured by an oriented and directed as well as defined binding and attachment, respectively, of the at least one antigen or antigenic determinant to the VLP as will become apparent in the following. Furthermore, the typical inherent highly repetitive and organized structure of the VLPs advantageously contributes to the display of the antigen or antigenic determinant in a highly ordered and repetitive fashion leading to a highly organized and repetitive antigen or antigenic determinant ⁇ VLP array and conjugate, respectively.
- the preferred inventive conjugates and arrays differ from prior art conjugates in their highly organized structure, dimensions, and in the repetitiveness of the antigen on the surface of the array.
- the preferred embodiment of this invention furthermore, allows expression of the particle in an expression host guaranteeing proper folding and assembly of the VLP, to which the antigen is then further coupled
- the present invention discloses methods of binding of antigen or antigenic determinant to VLPs.
- the at least one antigen or antigenic determinant is bound to the VLP by way of chemical cross-linking, typically and preferably by using a heterobifunctional cross-linker.
- a heterobifunctional cross-linker typically and preferably by using a heterobifunctional cross-linker.
- the hetero-bifunctional cross-linker contains a functional group which can react with preferred first attachment sites, i.e. with the side-chain amino group of lysine residues of the VLP or at least one VLP subunit, and a further functional group which can react with a preferred second attachment site, i.e.
- the first step of the procedure is the reaction of the VLP with the cross-linker.
- the product of this reaction is an activated VLP, also called activated carrier.
- unreacted cross-linker is removed using usual methods such as gel filtration or dialysis.
- the antigen or antigenic determinant is reacted with the activated VLP, and this step is typically called the coupling step.
- Unreacted antigen or antigenic determinant may be optionally removed in a fourth step, for example by dialysis.
- Several hetero-bifunctional cross-linkers are known to the art.
- cross-linkers include the preferred cross-linkers SMPH (Pierce), Sulfo-MBS, Sulfo-EMCS, Sulfo-GMBS, Sulfo-SIAB, Sulfo-SMPB, Sulfo-SMCC, SVSB, SIA and other cross-linkers available for example from the Pierce Chemical Company (Rockford, Ill., USA), and having one functional group reactive towards amino groups and one functional group reactive towards cysteine residues.
- the above mentioned cross-linkers all lead to formation of a thioether linkage.
- Another class of cross-linkers suitable in the practice of the invention is characterized by the introduction of a disulfide linkage between the antigen or antigenic determinant and the VLP upon coupling.
- Preferred cross-linkers belonging to this class include for example SPDP and Sulfo-LC-SPDP (Pierce).
- the extent of derivatization of the VLP with cross-linker can be influenced by varying experimental conditions such as the concentration of each of the reaction partners, the excess of one reagent over the other, the pH, the temperature and the ionic strength.
- the degree of coupling, i.e. the amount of antigens or antigenic determinants per subunits of the VLP can be adjusted by varying the experimental conditions described above to match the requirements of the vaccine.
- a particularly favored method of binding of antigens or antigenic determinants to the VLP is the linking of a lysine residue on the surface of the VLP with a cysteine residue on the antigen or antigenic determinant.
- fusion of an amino acid linker containing a cysteine residue, as a second attachment site or as a part thereof, to the antigen or antigenic determinant for coupling to the VLP may be required.
- amino acid linkers are favored.
- amino acid linkers are the hinge region of Immunoglobulins, glycine serine linkers (GGGGS) n , and glycine linkers (G) n all further containing a cysteine residue as second attachment site and optionally further glycine residues.
- amino acid linkers are N-terminal gammal: CGDKTHTSPP; C-terminal gamma 1: DKTHTSPPCG; N-terminal gamma 3: CGGPKPSTPPGSSGGAP; C-terminal gamma 3: PKPSTPPGSSGGAPGGCG; N-terminal glycine linker: GCGGGG and C-terminal glycine linker: GGGGCG.
- amino acid linkers particularly suitable in the practice of the invention when a hydrophobic antigen or antigenic determinant is bound to a VLP, are CGKKGG, or CGDEGG for N-terminal linkers, or GGKKGC and GGEDGC, for the C-terminal linkers.
- the terminal cysteine is optionally C-terminally amidated.
- GGCG, GGC or GGC-NH2 (“NH2” stands for amidation) linkers at the C-terminus of the peptide or CGG at its N-terminus are preferred as amino acid linkers.
- NH2 stands for amidation
- glycine residues will be inserted between bulky amino acids and the cysteine to be used as second attachment site, to avoid potential steric hindrance of the bulkier amino acid in the coupling reaction.
- the amino acid linker GGC-NH2 is fused to the C-terminus of the antigen or antigenic determinant.
- the cysteine residue present on the antigen or antigenic determinant has to be in its reduced state to react with the hetero-bifunctional cross-linker on the activated VLP, that is a free cysteine or a cysteine residue with a free sulfhydryl group has to be available.
- the cysteine residue to function as binding site is in an oxidized form, for example if it is forming a disulfide bridge, reduction of this disulfide bridge with e.g. DTT, TCEP or ⁇ -mercaptoethanol is required.
- Other methods of binding the antigen or antigenic determinant to the VLP include methods wherein the antigen or antigenic determinant is cross-linked to the VLP using the carbodiimide EDC, and NHS.
- the antigen or antigenic determinant is attached to the VLP using a homo-bifunctional cross-linker such as glutaraldehyde, DSG, BM[PEO] 4 , BS 3 , (Pierce Chemical Company, Rockford, Ill., USA) or other known homo-bifunctional cross-linkers whith functional groups reactive towards amine groups or carboxyl groups of the VLP.
- a homo-bifunctional cross-linker such as glutaraldehyde, DSG, BM[PEO] 4 , BS 3 , (Pierce Chemical Company, Rockford, Ill., USA) or other known homo-bifunctional cross-linkers whith functional groups reactive towards amine groups or carboxyl groups of the VLP.
- Other methods of binding the VLP to an antigen or antigenic determinant include methods where the VLP is biotinylated, and the antigen or antigenic determinant expressed as a streptavidin-fusion protein, or methods wherein both the antigen or antigenic determinant and the VLP are biotinylated, for example as described in WO 00/23955.
- the antigen or antigenic determinant may be first bound to streptavidin or avidin by adjusting the ratio of antigen or antigenic determinant to streptavidin such that free binding sites are still available for binding of the VLP, which is added in the next step.
- all components may be mixed in a “one pot” reaction.
- ligand-receptor pairs where a soluble form of the receptor and of the ligand is available, and are capable of being cross-linked to the VLP or the antigen or antigenic determinant, may be used as binding agents for binding antigen or antigenic determinant to the VLP.
- either the ligand or the receptor may be fused to the antigen or antigenic determinant, and so mediate binding to the VLP chemically bound or fused either to the receptor, or the ligand respectively. Fusion may also be effected by insertion or substitution.
- the VLP is the VLP of a RNA phage, and in a more preferred embodiment, the VLP is the VLP of RNA phage Q ⁇ coat protein.
- One or several antigen molecules i.e. one or several antigens or antigenic determinants, can be attached to one subunit of the capsid or VLP of RNA phages coat proteins, preferably through the exposed lysine residues of the VLP of RNA phages, if sterically allowable.
- a specific feature of the VLP of the coat protein of RNA phages and in particular of the Q ⁇ coat protein VLP is thus the possibility to couple several antigens per subunit. This allows for the generation of a dense antigen array.
- the binding and attachment, respectively, of the at least one antigen or antigenic determinant to the virus-like particle is by way of interaction and association, respectively, between at least one first attachment site of the virus-like particle and at least one second attachment of the antigen or antigenic determinant.
- VLPs or capsids of Q ⁇ coat protein display a defined number of lysine residues on their surface, with a defined topology with three lysine residues pointing towards the interior of the capsid and interacting with the RNA, and four other lysine residues exposed to the exterior of the capsid. These defined properties favor the attachment of antigens to the exterior of the particle, rather than to the interior of the particle where the lysine residues interact with RNA.
- VLPs of other RNA phage coat proteins also have a defined number of lysine residues on their surface and a defined topology of these lysine residues.
- the first attachment site is a lysine residue and/or the second attachment comprises sulfhydryl group or a cysteine residue.
- the first attachment site is a lysine residue and the second attachment is a cysteine residue.
- the antigen or antigenic determinant is bound via a cysteine residue, to lysine residues of the VLP of RNA phage coat protein, and in particular to the VLP of Q ⁇ coat protein.
- VLPs derived from RNA phages are their high expression yield in bacteria that allows production of large quantities of material at affordable cost.
- the inventive conjugates and arrays differ from prior art conjugates in their highly organized structure, dimensions, and in the repetitiveness of the antigen on the surface of the array.
- the use of the VLPs as carriers allow the formation of robust antigen arrays and conjugates, respectively, with variable antigen density.
- the use of VLPs of RNA phages, and hereby in particular the use of the VLP of RNA phage Q ⁇ coat protein allows to achieve very high epitope density. In particular, a density of more than 1.5 epitopes per subunit could be reached by coupling the human A ⁇ 1-6 peptide to the VLP of Q ⁇ coat protein.
- compositions of VLPs of RNA phage coat proteins with a high epitope density can be effected using the teaching of this application.
- an average number of antigen or antigenic determinant per subunit of 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4 2.5, 2.6, 2.7, 2.8, 2.9, or higher is preferred.
- the second attachment site may be either naturally or non-naturally present with the antigen or the antigenic determinant. In the case of the absence of a suitable natural occurring second attachment site on the antigen or antigenic determinant, such a, then non-natural second attachment has to be engineered to the antigen.
- lysine residues are exposed on the surface of the VLP of Q ⁇ coat protein. Typically these residues are derivatized upon reaction with a cross-linker molecule. In the instance where not all of the exposed lysine residues can be coupled to an antigen, the lysine residues which have reacted with the cross-linker are left with a cross-linker molecule attached to the ⁇ -amino group after the derivatization step. This leads to disappearance of one or several positive charges, which may be detrimental to the solubility and stability of the VLP.
- a Q ⁇ mutant coat protein with one additional lysine residue suitable for obtaining even higher density arrays of antigens.
- This mutant Q ⁇ coat protein, Q ⁇ -243 (Asn 10-Lys; SEQ ID NO: 24) was cloned, the protein expressed, and the capsid or VLP isolated and purified, showing that introduction of the additional lysine residue is compatible with self-assembly of the subunits to a capsid or VLP.
- antigen or antigenic determinant arrays and conjugates, respectively may be prepared using VLP of Q ⁇ coat protein mutants.
- a particularly favored method of attachment of antigens to VLPs, and in particular to VLPs of RNA phage coat proteins is the linking of a lysine residue present on the surface of the VLP of RNA phage coat proteins with a cysteine residue added to the antigen.
- a cysteine residue In order for a cysteine residue to be effective as second attachment site, a sulfhydryl group must be available for coupling. Thus, a cysteine residue has to be in its reduced state, that is, a free cysteine or a cysteine residue with a free sulfhydryl group has to be available.
- cysteine residue to function as second attachment site is in an oxidized form, for example if it is forming a disulfide bridge
- reduction of this disulfide bridge with e.g. DTT, TCEP or ⁇ -mercaptoethanol is required.
- concentration of reductand, and the molar excess of reductand over antigen has to be adjusted for each antigen.
- a titration range, starting from concentrations as low as 10 ⁇ M or lower, up to 10 to 20 mM or higher reductand if required is tested, and coupling of the antigen to the carrier assessed.
- the pH of the dialysis or equilibration buffer is lower than 7, preferably 6. The compatibility of the low pH buffer with antigen activity or stability has to be tested.
- Epitope density on the VLP of RNA phage coat proteins can be modulated by the choice of cross-linker and other reaction conditions.
- the cross-linkers Sulfo-GMBS and SMPH typically allow reaching high epitope density.
- Derivatization is positively influenced by high concentration of reactands, and manipulation of the reaction conditions can be used to control the number of antigens coupled to VLPs of RNA phage coat proteins, and in particular to VLPs of Q ⁇ coat protein.
- the position at which it should be fused, inserted or generally engineered has to be chosen.
- the selection of the position of the second attachment site may, by way of example, be based on a crystal structure of the antigen.
- Such a crystal structure of the antigen may provide information on the availability of the C- or N-termini of the molecule (determined for example from their accessibility to solvent), or on the exposure to solvent of residues suitable for use as second attachment sites, such as cysteine residues.
- Exposed disulfide bridges as is the case for Fab fragments, may also be a source of a second attachment site, since they can be generally converted to single cysteine residues through mild reduction, with e.g.
- the second attachment site will be added such that it allows generation of antibodies against the site of interaction with the natural ligands.
- the location of the second attachment site will be selected such that steric hindrance from the second attachment site or any amino acid linker containing the same is avoided.
- an antibody response directed at a site distinct from the interaction site of the self-antigen with its natural ligand is desired.
- the second attachment site may be selected such that it prevents generation of antibodies against the interaction site of the self-antigen with its natural ligands.
- Other criteria in selecting the position of the second attachment site include the oligomerization state of the antigen, the site of oligomerization, the presence of a cofactor, and the availability of experimental evidence disclosing sites in the antigen structure and sequence where modification of the antigen is compatible with the function of the self-antigen, or with the generation of antibodies recognizing the self-antigen.
- the antigen or antigenic determinant comprises a single second attachment site or a single reactive attachment site capable of association with the first attachment sites on the core particle and the VLPs or VLP subunits, respectively.
- This further ensures a defined and uniform binding and association, respectively, of the at least one, but typically more than one, preferably more than 10, 20, 40, 80, 120 antigens to the core particle and VLP, respectively.
- the provision of a single second attachment site or a single reactive attachment site on the antigen thus, ensures a single and uniform type of binding and association, respectively leading to a very highly ordered and repetitive array.
- the binding and association, respectively is effected by way of a lysine- (as the first attachment site) and cysteine- (as a second attachment site) interaction, it is ensured, in accordance with this preferred embodiment of the invention, that only one cysteine residue per antigen, independent whether this cysteine residue is naturally or non-naturally present on the antigen, is capable of binding and associating, respectively, with the VLP and the first attachment site of the core particle, respectively.
- an amino acid linker is bound to the antigen or the antigenic determinant by way of at least one covalent bond.
- the amino acid linker comprises, or alternatively consists of, the second attachment site.
- the amino acid linker comprises a sulfhydryl group or a cysteine residue.
- the amino acid linker is cysteine.
- the attachment site is selected to be a lysine or cysteine residue that is fused in frame to the HBcAg.
- the antigen is fused to the C-terminus of HBcAg via a three leucine linker.
- an antigen or antigenic determinant is linked to the VLP through a lysine residue, it may be advantageous to either substitute or delete one or more of the naturally resident lysine residues, as well as other lysine residues present in HBcAg variants.
- lysine residues when the naturally resident lysine residues are eliminated, another lysine will be introduced into the HBcAg as an attachment site for an antigen or antigenic determinant. Methods for inserting such a lysine residue are known in the art. Lysine residues may also be added without removing existing lysine residues.
- the C-terminus of the HBcAg has been shown to direct nuclear localization of this protein. (Eckhardt et al., J. Virol. 65:575-582 (1991)). Further, this region of the protein is also believed to confer upon the HBcAg the ability to bind nucleic acids.
- HBcAgs suitable for use in the practice of the present invention also include N-terminal truncation mutants. Suitable truncation mutants include modified HBcAgs where 1, 2, 5, 7, 9, 10, 12, 14, 15, or 17 amino acids have been removed from the N-terminus.
- variants of virus-like particles containing internal deletions within the sequence of the subunit composing the virus-like particle are also suitable in accordance with the present invention, provided their compatibility with the ordered or particulate structure of the virus-like particle.
- internal deletions within the sequence of the HBcAg are suitable (Preikschat, P., et al., J. Gen. Virol. 80:1777-1788 (1999)).
- HBcAgs suitable for use in the practice of the present invention include N- and C-terminal truncation mutants.
- Suitable truncation mutants include HBcAgs where 1, 2, 5, 7, 9, 10, 12, 14, 15, and 17 amino acids have been removed from the N-terminus and 1, 5, 10, 15, 20, 25, 30, 34, 35, 36, 37, 38, 39 40, 41, 42 or 48 amino acids have been removed from the C-terminus.
- Vaccine compositions of the invention can comprise mixtures of different HBcAgs.
- these vaccine compositions can be composed of HBcAgs which differ in amino acid sequence.
- vaccine compositions could be prepared comprising a “wild-type” HBcAg and a modified HBcAg in which one or more amino acid residues have been altered (e.g., deleted, inserted or substituted). In most applications, however, only one type of a HBcAg will be used.
- the present invention is applicable to a wide variety of antigens.
- the antigen is a protein, polypeptide or peptide.
- the antigen is DNA.
- the antigen can also be a lipid, a carbohydrate, or an organic molecule, in particular a small organic molecule such as nicotine.
- Antigens of the invention can be selected from the group consisting of the following: (a) polypeptides suited to induce an immune response against cancer cells; (b) polypeptides suited to induce an immune response against infectious diseases; (c) polypeptides suited to induce an immune response against allergens; (d) polypeptides suited to induce an immune response in farm animals or pets; and (e) fragments (e.g., a domain) of any of the polypeptides set out in (a)-(d).
- Preferred antigens include those from a pathogen (e.g. virus, bacterium, parasite, fungus) and tumors (especially tumor-associated antigens or “tumor markers”). Other preferred antigens are autoantigens.
- pathogen e.g. virus, bacterium, parasite, fungus
- tumors especially tumor-associated antigens or “tumor markers”.
- Other preferred antigens are autoantigens.
- the antigen is the peptide p33 derived from lymphocytic choriomeningitis virus (LCMV).
- LCMV lymphocytic choriomeningitis virus
- the p33 peptide represents one of the best studied CTL epitopes (Pircher et al., “Tolerance induction in double specific T-cell receptor transgenic mice varies with antigen,” Nature 342:559 (1989); Tissot et al., “Characterizing the functionality of recombinant T-cell receptors in vitro: a pMHC tetramer based approach,” J Immunol Methods 236:147 (2000); Bachmann et al., “Four types of Ca2+-signals after stimulation of naive T cells with T cell agonists, partial agonists and antagonists,” Eur.
- LCMV lymphocytic choriomeningitis virus
- p33-specific T cells have been shown to induce lethal diabetic disease in transgenic mice (Ohashi et al., “Ablation of ‘tolerance’ and induction of diabetes by virus infection in viral antigen transgenic mice,” Cell 65:305 (1991)) as well as to be able to prevent growth of tumor cells expressing p33 (Kente et al., “Fibroblasts act as efficient antigen-presenting cells in lymphoid organs,” Science 268:1343 (1995); arriver et al., “CTL tumor therapy specific for an endogenous antigen does not cause autoimmune disease,” J. Exp. Med. 186:645 (1997)).
- This specific epitope therefore, is particularly well suited to study autoimmunity, tumor immunology as well as viral diseases.
- the antigen or antigenic determinant is one that is useful for the prevention of infectious disease.
- Such treatment will be useful to treat a wide variety of infectious diseases affecting a wide range of hosts, e.g., human, cow, sheep, pig, dog, cat, other mammalian species and non-mammalian species as well.
- Treatable infectious diseases are well known to those skilled in the art, and examples include infections of viral etiology such as HIV, influenza, Herpes, viral hepatitis, Epstein Bar, polio, viral encephalitis, measles, chicken pox, Papilloma virus etc.; or infections of bacterial etiology such as pneumonia, tuberculosis, syphilis, etc.; or infections of parasitic etiology such as malaria, trypanosomiasis, leishmaniasis, trichomoniasis, amoebiasis, etc.
- viral etiology such as HIV, influenza, Herpes, viral hepatitis, Epstein Bar, polio, viral encephalitis, measles, chicken pox, Papilloma virus etc.
- infections of bacterial etiology such as pneumonia, tuberculosis, syphilis, etc.
- infections of parasitic etiology such as malaria, trypano
- antigens or antigenic determinants selected for the compositions of the invention will be well known to those in the medical art; examples of antigens or antigenic determinants include the following: the HIV antigens gp140 and gp160; the influenza antigens hemagglutinin, M2 protein and neuraminidase, Hepatitis B surface antigen or core and circumsporozoite protein of malaria or fragments thereof.
- antigens include infectious microbes such as viruses, bacteria and fungi and fragments thereof, derived from natural sources or synthetically.
- Infectious viruses of both human and non-human vertebrates include retroviruses, RNA viruses and DNA viruses.
- the group of retroviruses includes both simple retroviruses and complex retroviruses.
- the simple retroviruses include the subgroups of B-type retroviruses, C-type retroviruses and D-type retroviruses.
- An example of a B-type retrovirus is mouse mammary tumor virus (MMTV).
- the C-type retroviruses include subgroups C-type group A (including Rous sarcoma virus (RSV), avian leukemia virus (ALV), and avian mycloblastosis virus (AMV)) and C-type group B (including murine leukemia virus (MLV), feline leukemia virus (FeLV), murine sarcoma virus (MSV), gibbon ape leukemia virus (GALV), spleen necrosis virus (SNV), reticuloendotheliosis virus (RV) and simian sarcoma virus (SSV)).
- the D-type retroviruses include Mason-Pfizer monkey virus (MPMV) and simian retrovirus type 1 (SRV-1).
- the complex retroviruses include the subgroups of lentiviruses, T-cell leukemia viruses and the foamy viruses.
- Lentiviruses include HIV-1, but also include HIV-2, SIV, Visna virus, feline immunodeficiency virus (FIV), and equine infectious anemia virus (EIAV).
- the T-cell leukemia viruses include HTLV-1, HTLV-T1, simian T-cell leukemia virus (STLV), and bovine leukemia virus (BLV).
- the foamy viruses include human foamy virus (HFV), simian foamy virus (SFV) and bovine foamy virus (BFV).
- RNA viruses that are antigens in vertebrate animals include, but are not limited to, the following: members of the family Reoviridae, including the genus Orthoreovirus (multiple serotypes of both mammalian and avian retroviruses), the genus Orbivirus (Bluetongue virus, Eugenangee virus, Kemerovo virus, African horse sickness virus, and Colorado Tick Fever virus), the genus Rotavirus (human rotavirus, Kansas calf diarrhea virus, murine rotavirus, simian rotavirus, bovine or ovine rotavirus, avian rotavirus); the family Picomaviridae, including the genus Enterovirus (poliovirus, Coxsackie virus A and B, enteric cytopathic human orphan (ECHO) viruses, hepatitis A, C, D, E and G viruses, Simian enteroviruses, Murine encephalomyelitis (ME) viruses, Polio
- the family Bunyaviridae including the genus Bunyvirus (Bunyamwera and related viruses, California encephalitis group viruses), the genus Phlebovirus (Sandfly fever Sicilian virus, Rift Valley fever virus), the genus Nairovirus (Crimean-Congo hemorrhagic fever virus, Kenya sheep disease virus), and the genus Uukuvirus (Uukuniemi and related viruses); the family Orthomyxoviridae, including the genus Influenza virus (Influenza virus type A, many human subtype
- the family Bunyaviridae including the genus Bunyvirus (Bunyamwera and related viruses, California encephalitis group viruses), the genus Phlebovirus (Sandfly fever Sicilian virus, Rift Valley fever virus), the genus Nairovirus (Crimean-Congo hemorrhagic fever virus, Kenya sheep disease virus), and the genus Uukuvirus (Uukuniemi and related viruses); the family Orthomyxoviridae, including the genus Influenza virus (Influenza virus type A, many human subtype
- Illustrative DNA viruses that are antigens in vertebrate animals include, but are not limited to: the family Poxviridae, including the genus Orthopoxvirus (Variola major, Variola minor, Monkey pox Vaccinia, Cowpox, Buffalopox, Rabbitpox, Ectromelia), the genus Leporipoxvirus (Myxoma, Fibroma), the genus Avipoxvirus (Fowlpox, other avian poxvirus), the genus Capripoxvirus (sheeppox, goatpox), the genus Suipoxvirus (Swinepox), the genus Parapoxvirus (contagious postular dermatitis virus, pseudocowpox, bovine papular stomatitis virus); the family Iridoviridae (African swine fever virus, Frog viruses 2 and 3, Lymphocystis virus of fish); the family Herpesviridae
- the antigen comprises one or more cytotoxic T cell epitopes, Th cell epitopes, or a combination of the two epitopes.
- the methods of the preferred embodiments are particularly well suited for treatment of other mammals or other animals, e.g., birds such as hens, chickens, turkeys, ducks, geese, quail and pheasant. Birds are prime targets for many types of infections.
- CIAV chicken infectious anemia virus
- Vaccination of birds, like other vertebrate animals can be performed at any age. Normally, vaccinations are performed at up to 12 weeks of age for a live microorganism and between 14-18 weeks for an inactivated microorganism or other type of vaccine. For in ovo vaccination, vaccination can be performed in the last quarter of embryo development.
- the vaccine can be administered subcutaneously, by spray, orally, intraocularly, intratracheally, nasally, in ovo or by other methods described herein.
- Cattle and livestock are also susceptible to infection. Disease which affect these animals can produce severe economic losses, especially amongst cattle.
- the methods of the invention can be used to protect against infection in livestock, such as cows, horses, pigs, sheep and goats.
- Cows can be infected by bovine viruses.
- Bovine viral diarrhea virus (BVDV) is a small enveloped positive-stranded RNA virus and is classified, along with hog cholera virus (HOCV) and sheep border disease virus (BDV), in the pestivirus genus.
- HOCV hog cholera virus
- BDV sheep border disease virus
- Pestiviruses were previously classified in the Togaviridae family, some studies have suggested their reclassification within the Flaviviridae family along with the flavivirus and hepatitis C virus (HCV) groups.
- HCV hepatitis C virus
- Equine herpesviruses comprise a group of antigenically distinct biological agents which cause a variety of infections in horses ranging from subclinical to fatal disease. These include Equine herpesvirus-1 (EHV-1), a ubiquitous pathogen in horses. EHV-1 is associated with epidemics of abortion, respiratory tract disease, and central nervous system disorders. Other EHV's include EHV-2, or equine cytomegalovirus, EHV-3, equine coital exanthema virus, and EHV-4, previously classified as EHV-1 subtype 2.
- Sheep and goats can be infected by a variety of dangerous microorganisms including visna-maedi.
- Cats both domestic and wild, are susceptible to infection with a variety of microorganisms.
- feline infectious peritonitis is a disease which occurs in both domestic and wild cats, such as lions, leopards, cheetahs, and jaguars.
- the methods of the invention can be used to vaccinate cats to prevent them against infection.
- Domestic cats may become infected with several retroviruses, including but not limited to feline leukemia virus (FeLV), feline sarcoma virus (FeSV), endogenous type C oncomavirus (RD-114), and feline syncytia-forming virus (FeSFV).
- feline leukemia virus FeLV
- feline sarcoma virus FeSV
- endogenous type C oncomavirus RD-114
- feline syncytia-forming virus FeSFV
- feline T-lymphotropic lentivirus also referred to as feline immunodeficiency
- Feline infectious peritonitis (FIP) is a sporadic disease occurring unpredictably in domestic and wild Felidae.
- FIP is primarily a disease of domestic cats, it has been diagnosed in lions, mountain lions, leopards, cheetahs, and the jaguar. Smaller wild cats that have been afflicted with FIP include the lynx and caracal, sand cat and pallas cat.
- the fish immune system has many features similar to the mammalian immune system, such as the presence of B cells, T cells, lymphokines, complement, and immunoglobulins. Fish have lymphocyte subclasses with roles that appear similar in many respects to those of the B and T cells of mammals. Vaccines can be administered orally or by immersion or injection.
- Aquaculture species include but are not limited to fin-fish, shellfish, and other aquatic animals.
- Fin-fish include all vertebrate fish, which may be bony or cartilaginous fish, such as, for example, salmonids, carp, catfish, yellowtail, seabream and seabass.
- Salmonids are a family of fin-fish which include trout (including rainbow trout), salmon and Arctic char.
- shellfish include, but are not limited to, clams, lobster, shrimp, crab and oysters.
- Other cultured aquatic animals include, but are not limited to, eels, squid and octopi.
- Polypeptides of viral aquaculture pathogens include but are not limited to glycoprotein or nucleoprotein of viral hemorrhagic septicemia virus (VHSV); G or N proteins of infectious hematopoietic necrosis virus (IHNV); VP1, VP2, VP3 or N structural proteins of infectious pancreatic necrosis virus (IPNV); G protein of spring viremia of carp (SVC); and a membrane-associated protein, tegumin or capsid protein or glycoprotein of channel catfish virus (CCV).
- VHSV glycoprotein or nucleoprotein of viral hemorrhagic septicemia virus
- IHNV infectious hematopoietic necrosis virus
- IPNV infectious pancreatic necrosis virus
- SVC SVC
- Polypeptides of bacterial pathogens include but are not limited to an iron-regulated outer membrane protein, (IROMP), an outer membrane protein (OMP), and an A-protein of Aeromonis salmonicida which causes furunculosis, p57 protein of Renibacterium salmoninarum which causes bacterial kidney disease (BKD), major surface associated antigen (msa), a surface expressed cytotoxin (mpr), a surface expressed hemolysin (ish), and a flagellar antigen of Yersiniosis; an extracellular protein (ECP), an iron-regulated outer membrane protein (IROMP), and a structural protein of Pasteurellosis; an OMP and a flagellar protein of Vibrosis anguillarum and V.
- IROMP iron-regulated outer membrane protein
- OMP outer membrane protein
- Vibrosis anguillarum and V.
- ordalii a flagellar protein, an OMP protein, aroA, and purA of Edwardsiellosis ictaluri and E. tarda ; and surface antigen of Ichthyophthirius; and a structural and regulatory protein of Cytophaga columnari ; and a structural and regulatory protein of Rickettsia.
- Polypeptides of a parasitic pathogen include but are not limited to the surface antigens of Ichthyophthirius.
- vaccine compositions suitable for use in methods for preventing and/or attenuating diseases or conditions which are caused or exacerbated by “self” gene products (e.g., tumor necrosis factors).
- vaccine compositions of the invention include compositions which lead to the production of antibodies that prevent and/or attenuate diseases or conditions caused or exacerbated by “self” gene products.
- diseases or conditions include graft versus host disease, IgE-mediated allergic reactions, anaphylaxis, adult respiratory distress syndrome, Crohn's disease, allergic asthma, acute lymphoblastic leukemia (ALL), non-Hodgkin's lymphoma (NHL), Graves' disease, systemic lupus erythematosus (SLE), inflammatory autoimmune diseases, myasthenia gravis, immunoproliferative disease lymphadenopathy (IPL), angioimmunoproliferative lymphadenopathy (AIL), immunoblastive lymphadenopathy (IBL), rheumatoid arthritis, diabetes, prion diseases, multiple sclerosis, Alzheimer disease and osteoporosis.
- IPL immunoproliferative disease lymphadenopathy
- AIL angioimmunoproliferative lymphadenopathy
- IBL rheumatoid arthritis
- diabetes prion diseases
- multiple sclerosis Alzheimer disease and osteoporosis.
- compositions of the invention are an immunotherapeutic that can be used for the treatment and/or prevention of allergies, cancer or drug addiction.
- antigens or antigenic determinants for the preparation of compositions and for use in methods of treatment for allergies would be known to those skilled in the medical arts treating such disorders.
- Representative examples of such antigens or antigenic determinants include the following: bee venom phospholipase A 2 , Bet v I (birch pollen allergen), 5 Dol m V (white-faced hornet venom allergen), and Der p I (House dust mite allergen), as well as fragments of each which can be used to elicit immunological responses.
- antigens or antigenic determinants include the following: Her2 (breast cancer); GD2 (neuroblastoma); EGF-R (malignant glioblastoma); CEA (medullary thyroid cancer); CD52 (leukemia); human melanoma protein gp100; human melanoma protein gp100 epitopes such as amino acids 154-162 (sequence: KTWGQYWQV), 209-217 (ITDQVPFSV), 280-288 (YLEPGPVTA), 457-466 (LLDGTATLRL) and 476-485 (VLYRYGSFSV); human melanoma protein melan-A/MART-1; human melanoma protein melan-A/MART-1 epitopes such as amino acids 27-35 (AAGIGILTV) and 32-40 (ILTVILGVL); tyrosinase and tyrosinase related proteins (e.g., TRP-1
- CEA epitopes such as amino acids 571-579 (YLSGANLNL); p53 protein; p53 protein epitopes such as amino acids 65-73 (RMPEAAPPV), 149-157 (STPPPGTRV) and 264-272 (LLGRNSFEV); Her2/neu epitopes such as amino acids 369-377 (KIFGSLAFL) and 654-662 (IISAVVGIL); NY-ESO-1 peptides 157-165 and 157-167, 159-167; HPV16 E7 protein; HPV16 E7 protein epitopes such as amino acids 86-93 (TLGIVCPI); as well as fragments of each which can be used to elicit immunological responses.
- YLSGANLNL p53 protein
- p53 protein epitopes such as amino acids 65-73 (RMPEAAPPV), 149-157 (STPPPGTRV) and 264-272 (LLGRNSFEV)
- Her2/neu epitopes such as amino acids 369-377
- antigens or antigenic determinants for compositions and methods of treatment for drug addiction, in particular recreational drug addiction, would be known to those skilled in the medical arts treating such disorders.
- antigens or antigenic determinants include, for example, opioids and morphine derivatives such as codeine, fentanyl, heroin, morphium and opium; stimulants such as amphetamine, cocaine, MDMA (methylenedioxymethamphetamine), methamphetamine, methylphenidate and nicotine; hallucinogens such as LSD, mescaline and psilocybin; as well as cannabinoids such as hashish and marijuana.
- opioids and morphine derivatives such as codeine, fentanyl, heroin, morphium and opium
- stimulants such as amphetamine, cocaine, MDMA (methylenedioxymethamphetamine), methamphetamine, methylphenidate and nicotine
- hallucinogens such as LSD, mescaline and p
- antigens or antigenic determinants for compositions and methods of treatment for other diseases or conditions associated with self antigens would be also known to those skilled in the medical arts treating such disorders.
- Representative examples of such antigens or antigenic determinants are, for example, lymphotoxins (e.g.
- Lymphotoxin ⁇ (LT ⁇ ), Lymphotoxin ⁇ (LT ⁇ )), and lymphotoxin receptors, Receptor activator of nuclear factor kappaB ligand (RANKL), vascular endothelial growth factor (VEGF) and vascular endothelial growth factor receptor (VEGF-R), Interleukin 17 and amyloid beta peptide (A ⁇ 1-42 ), TN-F ⁇ , MIF, MCP-1, SDF-1, Rank-L, M-CSF, Angiotensin II, Endoglin, Eotaxin, Grehlin, BLC, CCL21, IL-13, IL-17, IL-5, IL-8, IL-15, Bradykinin, Resistin, LHRH, GHRH, GIH, CRH, TRH and Gastrin, as well as fragments of each which can be used to elicit immunological responses.
- RNKL nuclear factor kappaB ligand
- VEGF vascular end
- the antigen or antigenic determinant is selected from the group consisting of: (a) a recombinant polypeptide of HIV; (b) a recombinant polypeptide of Influenza virus (e.g., an Influenza virus M2 polypeptide or a fragment thereof); (c) a recombinant polypeptide of Hepatitis C virus; (d) a recombinant polypeptide of Hepatitis B virus (e) a recombinant polypeptide of Toxoplasma; (f) a recombinant polypeptide of Plasmodium falciparum ; (g) a recombinant polypeptide of Plasmodium vivax; (h) a recombinant polypeptide of Plasmodium ovale; (i) a recombinant polypeptide of Plasmodium malariae; (j) a recombinant polypeptide of breast cancer cells; (k) a recombinant polypeptide of
- the antigen being coupled, fused or otherwise attached to the virus-like particle, is a T cell epitope, either a cytotoxic or a Th cell epitope.
- the antigen is a combination of at least two, preferably different, epitopes, wherein the at least two epitopes are linked directly or by way of a linking sequence. These epitopes are preferably selected from the group consisting of cytotoxic and Th cell epitopes.
- a mosaic virus-like particle e.g. a virus-like particle composed of subunits attached to different antigens and epitopes, respectively
- a composition of the present invention can be, for example, obtained by transforming E. coli with two compatible plasmids encoding the subunits composing the virus-like particle fused to different antigens and epitopes, respectively.
- the mosaic virus-like particle is assembled either directly in the cell or after cell lysis.
- such an inventive composition can also be obtained by attaching a mixture of different antigens and epitopes, respectively, to the isolated virus-like particle.
- the antigen of the present invention can be synthesized or recombinantly expressed and coupled to the virus-like particle, or fused to the virus-like particle using recombinant DNA techniques. Exemplary procedures describing the attachment of antigens to virus-like particles are disclosed in WO 00/32227, in WO 01/85208 and in WO 02/056905, the disclosures of which are herewith incorporated by reference in its entirety
- the invention also provides a method of producing a composition for enhancing an immune response in an animal comprising a VLP and an immunostimulatory substance, preferably an unmethylated CpG-containing oligonucleotide bound to the VLP which comprises incubating the VLP with the immunostimulatory substance and oligonucleotide, respectively, adding RNase and purifying said composition.
- the method comprises incubating the VLP with RNase, adding the immunostimulatory substance and oligonucleotide, respectively, and purifying the composition.
- the VLP is produced in a bacterial expression system.
- the RNase is RNase A.
- the invention further provides a method of producing a composition for enhancing an immune response in an animal comprising a VLP bound to an immunostimulatory substance, preferably to an unmethylated CpG-containing oligonucleotide which comprises disassembling the VLP, adding the immunostimulatory substance and oligonucleotide, respectively, and reassembling the VLP.
- the method can further comprise removing nucleic acids of the disassembled VLP and/or purifying the composition after reassembly.
- the invention also provides vaccine compositions which can be used for preventing and/or attenuating diseases or conditions.
- Vaccine compositions of the invention comprise, or alternatively consist of, an immunologically effective amount of the inventive immune enhancing composition together with a pharmaceutically acceptable diluent, carrier or excipient.
- the vaccine can also optionally comprise an adjuvant.
- the invention further provides vaccination methods for preventing and/or attenuating diseases or conditions in animals.
- the invention provides vaccines for the prevention of infectious diseases in a wide range of animal species, particularly mammalian species such as human, monkey, cow, dog, cat, horse, pig, etc.
- Vaccines can be designed to treat infections of viral etiology such as HIV, influenza, Herpes, viral hepatitis, Epstein Bar, polio, viral encephalitis, measles, chicken pox, etc.; or infections of bacterial etiology such as pneumonia, tuberculosis, syphilis, etc.; or infections of parasitic etiology such as malaria, trypanosomiasis, leishmaniasis, trichomoniasis, amoebiasis, etc.
- viral etiology such as HIV, influenza, Herpes, viral hepatitis, Epstein Bar, polio, viral encephalitis, measles, chicken pox, etc.
- infections of bacterial etiology such as pneumonia, tuberculosis, syphilis, etc.
- infections of parasitic etiology such as malaria, trypanosomiasis, leishmaniasis, trichomoniasis, amoebia
- the invention provides vaccines for the prevention of cancer in a wide range of species, particularly mammalian species such as human, monkey, cow, dog, cat, horse, pig, etc.
- Vaccines can be designed to treat all types of cancer including, but not limited to, lymphomas, carcinomas, sarcomas and melanomas.
- compositions of the invention when administered to an animal, they can be in a composition which contains salts, buffers, adjuvants or other substances which are desirable for improving the efficacy of the composition.
- materials suitable for use in preparing pharmaceutical compositions are provided in numerous sources including R EMINGTON'S P HARMACEUTICAL S CIENCES (Osol, A, ed., Mack Publishing Co., (1990)).
- Various adjuvants can be used to increase the immunological response, depending on the host species, and include but are not limited to, Freund's (complete and incomplete), mineral gels such as aluminum hydroxide, surface active substances such as lysolecithin, pluronic polyols, polyanions, peptides, oil emulsions, keyhole limpet hemocyanins, dinitrophenol, and potentially useful human adjuvants such as BCG (bacille Calmette-Guerin) and Corynebacterium parvum .
- BCG Bacille Calmette-Guerin
- compositions of the invention include, but are not limited to, Monophosphoryl lipid immunomodulator, AdjuVax 100a, QS-21, QS-18, CRL1005, Aluminum salts, MF-59, and Virosomal adjuvant technology.
- the adjuvants can also comprise a mixture of these substances.
- compositions of the invention are said to be “pharmacologically acceptable” if their administration can be tolerated by a recipient individual. Further, the compositions of the invention will be administered in a “therapeutically effective amount” (i.e., an amount that produces a desired physiological effect).
- compositions of the present invention can be administered by various methods known in the art.
- the particular mode selected will depend of course, upon the particular composition selected, the severity of the condition being treated and the dosage required for therapeutic efficacy.
- the methods of the invention generally speaking, can be practiced using any mode of administration that is medically acceptable, meaning any mode that produces effective levels of the active compounds without causing clinically unacceptable adverse effects.
- modes of administration include oral, rectal, parenteral, intracistemal, intravaginal, intraperitoneal, topical (as by powders, ointments, drops or transdermal patch), bucal, or as an oral or nasal spray.
- parenteral refers to modes of administration which include intravenous, intramuscular, intraperitoneal, intrastemal, subcutaneous and intraarticular injection and infusion.
- the composition of the invention can also be injected directly in a lymph node.
- compositions for administration include sterile aqueous (e.g., physiological saline) or non-aqueous solutions and suspensions.
- non-aqueous solvents are propylene glycol, polyethylene glycol, vegetable oils such as olive oil, and injectable organic esters such as ethyl oleate.
- Carriers or occlusive dressings can be used to increase skin permeability and enhance antigen absorption.
- Combinations can be administered either concomitantly, e.g., as an admixture, separately but simultaneously or concurrently; or sequentially.
- Administration “in combination” further includes the separate administration of one of the compounds or agents given first, followed by the second.
- Dosage levels depend on the mode of administration, the nature of the subject, and the quality of the carrier/adjuvant formulation. Typical amounts are in the range of about 0.1 ⁇ g to about 20 mg per subject. Preferred amounts are at least about 1 ⁇ g to about 100 ⁇ g per subject. Multiple administration to immunize the subject is preferred, and protocols are those standard in the art adapted to the subject in question.
- compositions can conveniently be presented in unit dosage form and can be prepared by any of the methods well-known in the art of pharmacy. Methods include the step of bringing the compositions of the invention into association with a carrier which constitutes one or more accessory ingredients. In general, the compositions are prepared by uniformly and intimately bringing the compositions of the invention into association with a liquid carrier, a finely divided solid carrier, or both, and then, if necessary, shaping the product.
- compositions suitable for oral administration can be presented as discrete units, such as capsules, tablets or lozenges, each containing a predetermined amount of the compositions of the invention.
- Other compositions include suspensions in aqueous liquids or non-aqueous liquids such as a syrup, an elixir or an emulsion.
- Other delivery systems can include time-release, delayed release or sustained release delivery systems. Such systems can avoid repeated administrations of the compositions of the invention described above, increasing convenience to the subject and the physician. Many types of release delivery systems are available and known to those of ordinary skill in the art.
- compositions of the invention include processes for the production of the compositions of the invention and methods of medical treatment for cancer and allergies using said compositions.
- HBcAg containing peptide p33 from LCMV is given in FIG. 1B.
- the p33-HBcAg VLPs (p33-VLPs) were generated as follows: Hepatitis B clone pEco63 containing the complete viral genome of Hepatitis B virus was purchased from ATCC. The gene encoding HBcAg was introduced into the EcoRI/HindIII restriction sites of expression vector pkk223.3 (Pharmacia) under the control of a strong tac promoter.
- the p33 peptide (KAVYNFATM) derived from lymphocytic choriomeningitis virus (LCMV) was fused to the C-terminus of HBcAg (1-185) via a three leucine-linker by standard PCR methods.
- a clone of E. coli K802 selected for good expression was transfected with the plasmid, and cells were grown and resuspended in 5 ml lysis buffer (10 mM Na 2 HPO 4 , 30 mM NaCl, 10 mM EDTA, 0.25% Tween-20, pH 7.0). 200 ⁇ l of lysozyme solution (20 mg/ml) was added.
- CpG-containing oligonucleotides can be packaged into HBcAg VLPs
- RNA/DNA or protein RNA/DNA or protein
- Bacterial produced VLPs contain high levels of single stranded RNA, which is presumably binding to the arginine repeats appearing near the C-terminus of the HBcAg protein and being geographically located inside the VLPs as shown by X-ray crystallography.
- the contaminating RNA can be easily digested and so eliminated by incubating the VLPs with RNase A.
- the highly active RNase A enzyme has a molecular weight of about 14 kDa and is presumably small enough to enter the VLPs to eliminate the undesired ribonucleic acids.
- the recombinant p33-VLPs were supplemented with CpG-oligonucleotides (FIG. 1A) before digestion with RNase A. As shown in FIG. 4 the presence of CpG-oligonucleotides preserved the capsid structure as shown by similar migration compared to untreated p33-VLPs.
- the CpG-oligonucleotide-containing VLPs were purified from unbound oligonucleotides via dialysis (4500-fold dilution in PBS for 24 hours using a 300 kDa MWCO dialysis membrane) (FIG. 5).
- CpG-Oligonucleotides can be Packaged into VLPs by Removal of the RNA with RNAse and Subsequent Packaging of Oligonucleotides into VLPs
- the p33-VLPs (containing bacterial single-stranded RNA) were first incubated with RNase A to remove the RNA and in a second step the immunostimulating CpG-oligonucleotides (with normal phosphodiester bonds but also with phosphorothioate modification of the phosphate backbone) was supplemented to the samples (FIG. 6).
- This experiment clearly shows that the CpG-oligonucleotides are not absolutely required simultaneously during the RNA degradation reaction but can be added at a later time.
- VLPs Containing CpG-Oligonucleotides (with Phosphorothioate Modification of the Phosphate Backbone or Normal Phosphodiester Bonds) Induce Enhanced Anti-Viral Protection
- mice were subcutaneously primed with 100 ⁇ g CpG-oligonucleotide containing p33-VLPs. Before immunization, p33-VLP preparations were extensively purified from unbound CpG-oligonucleotides via dialysis (see Example 2 and FIG. 5). As controls mice were subcutaneously primed with 100 ⁇ g p33-VLP alone, mixed with 20 nmol CpG-oligonucleotide, with 20 nmol CpG-oligonucleotide alone or left untreated.
- mice were challenged with LCMV (200 pfu, intravenously) and viral titers were assessed in the spleens 5 days later as described in Bachmann, M. F., “Evaluation of lymphocytic choriomeningitis virus-specific cytotoxic T cell responses,” in Immunology Methods Manual, Lefkowitz, I., ed., Academic Press Ltd., New York, N.Y. (1997) p. 1921. The results are shown in FIGS. 7, 8 and 9 .
- BK virus is a non-enveloped double stranded DNA virus belonging to the polyoma virus subfamily of the papovaviridae.
- VP1 is the major capsid protein.
- VP1 has 362 amino acids (FIG. 10) and is 42 kDa in size.
- insect cells or yeast VP1 spontaneously forms capsid structures (Salunke D. M., et al., Cell 46(6):895-904 (1986); Sasnauskas, K., et al., Biol. Chem.
- the capsid is organized in 72 VP1 pentamers forming an icosahedral structure.
- the capsids have a diameter of approximately 45 nm.
- VLPs produced in yeast contain small amounts of RNA which can be easily digested and so eliminated by incubating the VLPs with RNase A.
- the highly active RNase A enzyme has a molecular weight of about 14 kDa and is small enough to enter the VLPs to eliminate the undesired ribonucleic acids.
- Recombinantly produced BKV VLPs were concentrated to 1 mg/ml in PBS buffer pH 7.2 and incubated in the absence or presence of RNase A (200 ⁇ g/ml, Roche Diagnostics Ltd, Switzerland) for 3 h at 37° C.
- BKV VLPs were supplemented with 75 nmol/ml fluorescein labeled phosphorothioate CpG-FAM oligonucleotide and incubated for 3 h at 37° C. Subsequently BKV VLPs were subjected to DNaseI digestion for 3 h at 37° C. (40 u/ml AMPD1, Sigma, Division of Fluka AG, Switzerland) or loaded without DNaseI digestion. The samples were complemented with 6-fold concentrated DNA-loading buffer (10 mM Tris pH 7.5, 10% v/v glycerol, 0.4% orange G) and run for 1 h at 65 volts in a 0.8% native tris-acetate pH 7.5 agarose gel.
- FIG. 12 shows BKV VLPs in a native 0.8% agarose gel electrophoresis after control incubation or after digestion with RNase A and subsequent incubation with fluorescent CpG-FAM oligonucleotides (oligonucleotide from FIG. 1A with a 5′-fluorescein-label) upon staining with ethidium bromide or without ethidium bromide staining.
- fluorescent CpG-FAM oligonucleotides oligonucleotide from FIG. 1A with a 5′-fluorescein-label
- FIG. 13 shows BKV VLPs (15 ⁇ g) in a native 0.8% agarose gel electrophoresis after control incubation or after digestion with RNase A and subsequent incubation with (ds) DNA upon staining with ethidium bromide or Coomassie Blue in order to assess the presence of RNA/DNA or protein.
- Packaged DNA molecules are visible in the presence of ethidium bromide as a band with the same migration as the VLP band visualized with Coomassie Blue.
- CpG-Containing Oligonucleotides can be Packaged into BKV VLPs.
- the RNase A treated recombinant BKV VLPs (Example 6) were supplemented with 150 nmol/ml CpG-oligonucleotides with phosphodiester backbone or with phosphorothioate backbone and incubated for 3 h at 37° C.
- VLP preparations for mouse immunization were extensively dialysed (10,000-fold diluted) for 24 h against PBS pH 7.2 with a 300 kDa MWCO dialysis membrane (Spectrum Medical industries Inc., Houston, USA) to eliminate RNase A and the excess of CpG-oligonucleotides.
- the samples were complemented with 6-fold concentrated DNA-loading buffer (10 mM Tris pH 7.5, 10% v/v glycerol, 0.4% orange G) and run for 1 h at 65 volts in a 0.8% native tris-acetate pH 7.5 agarose gel.
- FIG. 14 shows BKV VLPs (15 ⁇ g) in a native 0.8% agarose gel electrophoresis after control incubation or after digestion with RNase A and subsequent incubation with CpG-oligonucleotides (with phosphodiester- or with phosphorothioate backbone) upon staining with ethidium bromide (A) or Coomassie Blue (B) in order to assess the presence of RNA/DNA or protein and the reduction of unbound CpG-oligonucleotides after dialysis. Unbound CpG-oligonucleotides are visible as a low molecular weight ethidium bromide stained band.
- VLPs Containing CpG-Oligonucleotides (with Phosphorothioate Modification of the Phosphate Backbone) Induce Enhanced Th1 Directed Immune Response
- mice Female BALB/c mice (three mice per group) were subcutaneously injected with 10 ⁇ g BKV VLPs containing phosphorothioate CpG-oligonucleotide (FIG. 1A). As controls mice were subcutaneously injected with either 10 ⁇ g of RNase treated BKV VLPs alone or BKV VLPs mixed with 0.3 nmol or 20 nmol phosphorothioate CpG-oligonucleotides in 200 ⁇ l PBS pH 7.2 or were left untreated. BKV VLPs were prepared as described in Example 8 and before immunization extensively purified from unbound CpG-oligonucleotide by dialysis. On day 14 after immunization blood was taken and IgG1 and IgG2a antibody response to BKV VLPs was determined.
- FIG. 15 shows IgG1 and IgG2a antibody response to BKV VLPs on day 14 after immunization. Immunization with RNase A treated BKV VLPs containing phosphorothioate CpG-oligonucleotides results in a decreased IgG1 and an increased anti-BKV VLP IgG2a titer as compared to immunization with the same amount (0.3 nmol) of CpG-oligonucleotides mixed with BKV VLPs or BKV VLPs alone.
- mice immunized with BKV VLPs mixed with 20 nmol phosphorothioate CpG-oligonucleotides show very low IgG1 and high IgG2a titers.
- the decrease in IgG1 titer and the increase in IgG2a titer as compared to controls demonstrates a Th1 cell directed immune response induced by phosphorothioate CpG-oligonucleotides packaged in BKV VLPs.
- FIG. 15 clearly demonstrates the higher potency of BKV VLPs containing CpG-oligonucleotides packaged within the particles as compared to BKV VLPs simply mixed with CpG-oligonucleotides.
- dsDNA Linear Double-Stranded DNA
- the p33-VLPs preparations (containing bacterial RNA) (EXAMPLE 1) were first incubated with RNaseA to remove the RNA and in a second step the linear dsDNA (350 bp long) was supplemented to the samples (FIG. 16).
- the migration of the p33-VLPs packaged with the dsDNA was similar to the one of p33-VLP containing RNA. This experiment shows that linear dsDNA of at least 350 base pairs in length can be packaged into the virus-like particles.
- Immunostimulatory Nucleic Acids can be Packaged into HBcAg VLPs Comprising Fusion Proteins with Antigens
- HBcAg VLPs when produced in E. coli by expressing the Hepatitis B core antigen fusion protein HBc33 (Example 1) or the fusion protein to the peptide P1A (HBcP1A), contain RNA which can be digested and so eliminated by incubating the VLPs with RNase A.
- the gene P1A codes for a protein that is expressed by the mastocytoma tumor cell line P815.
- the dominant CTL epitope termed P1A peptide
- P1A peptide binds to MHC class I (Ld) and the complex is recognized by specific CTL clones (Brandle et al., 1998, Eur. J. Immunol. 28: 4010-4019).
- Fusion of peptide P1A-1 (LPYLGWLVF) to the C-terminus of HBcAg (aa 185, see Example 1) was performed by PCR using appropriate primers using standard molecular biology techniques.
- a three leucine linker was cloned between the HBcAg and the peptide sequence. Expression was performed as described in Example 1.
- the fusion protein of HBcAg with P1A termed HBcP1A, formed capsids when expressed in E. coli which could be purified similar to the procedure described in Example 1.
- Enzymatic RNA hydrolysis Recombinantly produced HBcAg-p33 (HBc33) and HBcAg-P1A (HBcP1A) VLPs at a concentration of 1.0 mg/ml in 1 x PBS buffer (KCl 0.2g/L, KH2PO4 0.2g/L, NaCl 8 g/L, Na2HPO4 1.15 g/L) pH 7.4, were incubated in the presence of 300 ⁇ g/ml RNase A (Qiagen AG, Switzerland) for 3 h at 37° C. in a thermomixer at 650 rpm.
- RNase A Qiagen AG, Switzerland
- RNAse A HBcAg-p33 VLPs were supplemented with 130 nmol/ml CpG-oligonucleotides B-CpG, NKCpG, G10-PO (Table I).
- the 150mer single-stranded Cyl50-1 and 253mer double stranded dsCyCpG-253, both containing multiple copies of CpG motifs were added at 130 nmol/ml or 1.2 nmol/ml, respectively, and incubated in a thermomixer for 3 h at 37° C.
- Double stranded CyCpG-253 DNA was produced by cloning a double stranded multimer of CyCpG into the EcoRV site of pBluescript KS-.
- the resulting plasmid produced in E. coli XL1-blue and isolated using the Qiagen Endofree plasmid Giga Kit, was digested with restriction endonucleases XhoI and XbaI and resulting restriction products were separated by agarose electrophoresis.
- the 253 bp insert was isolated by electro-elution and ethanol precipitation. Sequence was verified by sequencing of both strands. TABLE I Sequences of immunostimulatory nucleic acids used in the Examples.
- DNAse I treatment Packaged HBcAg-p33 VLPs were subsequently subjected to DNaseI digestion (5 U/ml) for 3 h at 37° C. (DNaseI, RNase free Fluka AG, Switzerland) and were extensively dialysed (2 ⁇ against 200-fold volume) for 24 h against PBS pH 7.4 with a 300 kDa MWCO dialysis membrane (Spectrum Medical industries Inc., Houston, USA) to eliminate RNAse A and the excess of CpG-oligonucleotides.
- DNaseI RNase free Fluka AG, Switzerland
- Benzonase treatment Since some single stranded oligodeoxynucleotides were partially resistant to DNaseI treatment, Benzonase treatment was used to eliminate free oligonucleotides from the preparation. 100-120 U/ml Benzonase (Merck KGaA, Darmstadt, Germany) and 5 mM MgCl 2 were added and incubated for 3 h at 37° C. before dialysis.
- VLP preparations packaged with immunostimulatroy nucleic acids used in mouse immunization experiments were extensively dialysed (2x against 200fold volume) for 24 h against PBS pH 7.4 with a 300 kDa MWCO dialysis membrane (Spectrum Medical Industries, Houston, US) to eliminate added enzymes and free nucleic acids.
- capsid 2-30 ⁇ g of capsid were mixed with 1 volume of 2 ⁇ loading buffer (1 ⁇ TBE, 42% w/v urea, 12% w/v Ficoll, 0.01% Bromphenolblue), heated for 3 min at 95° C. and loaded on a 10% (for oligonucleotides of about 20 nt length) or 15% (for >than 40 mer nucleic acids) TBE/urea polyacrylamid gel (Invitrogen). Alternatively samples were loaded on a 1% agarose gel with 6 ⁇ loading dye (10 mM Tris pH 7.5, 50 mM EDTA, 10% v/v glycerol, 0.4% orange G). TBE/urea gels were stained with CYBRGold and agarose gels with stained with ethidium bromide.
- FIGS. 17, 18 and 19 show the packaging of B-CpG, NKCpG and G10-PO oligonucleotides into HBc33.
- RNA content in the VLPs was strongly reduced after RNaseA treatment (FIGS. 17A, 18A, 19 A) while most of the capsid migrated as a a slow migrating smear presumably due to the removal of the negatively charged RNA (FIGS. 17B, 18B, 19 B).
- the capsids contained a higher amount of nucleic acid than the RNAseA treated capsids and therefore migrated at similar velocity as the untreated capsids.
- oligonucleotides packaged in the capsids did not degrade, clearly showing packaging of oligonucleotides.
- packaging of oligonucleotides was confirmed by proteinase K digestion (as described in Examples 15 and 16) after DNAsel/Benzonase treatment and dialysis. The finding that oligonucleotides released from the capsid with the procedure described above were of the same size than the oligonucleotide used for packaging clearly demonstrated packaging of oligonucleotides (FIGS. 17C, 18C).
- FIG. 20 shows packaging of a large single-stranded oligonucleotide Cy150-1 into HBc33.
- Cy150-1 contains 7.5 repeats of CyCpG and was synthesized according standard oligonucleotide synthesis methods (IBA, Gottingen, Germany).
- RNA content in the capsid was strongly reduced after RNaseA treatment while most of the capsid migrated as a slow migrating smear (FIGS. 20A, B).
- Capsid were diluted with 4 volumes of water and concentrated to 1 mg/ml. After incubation with an excess of Cyl5O-1 the capsid contained a bigger amount of nucleic acid and thus migrated at similar velocity as the untreated capsids.
- FIG. 21 shows packaging of oligonucleotide NKCpGpt in HBcP1A. Treatment with RNAse reduced nucleic acid content and slowed migration of the capsids. Addition of NKCpGpt restored nucleic acid content in capsids and fast migration.
- FIG. 17 depicts the analysis of B-CpG packaging into HBc33 VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are 50 ⁇ g of the following samples: 1. HBc33 VLP untreated; 2. HBc33 VLP treated with RNase A; 3. HBc33 VLP treated with RNase A and packaged with B-CpG; 4. HBc33 VLP treated with RNase A, packaged with B-CpG and treated with DNaseI; 5. HBc33 VLP treated with RNase A, packaged with B-CpG, treated with DNaseI and dialysed; 6. 1 kb MBI Fermentas DNA ladder.
- (C) depicts the analysis of the amount of packaged oligo extracted from the VLP on a 1.5% agarose gel stained with ethidium bromide: Loaded on gel are the following samples: 1. 0.5 nmol B-CpG control; 2. 0.5 nmol B-CpG control; 3. B-CpG oligo content HBc33 after phenol/chloroform extraction; 4. B-CpG oligo content HBc33 after phenol/chloroform extraction and RNase A treatment; 5. B-CpG oligo content HBc33 after phenol/chloroform extraction and DNaseI treatment; 6. empty; 7. MBI Fermentas 100 bp DNA ladder
- FIG. 18 depicts the analysis of NKCpG packaging into HBc33 VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are 15 ⁇ g of the following samples: 1. HBc33 VLP untreated; 2. HBc33 VLP treated with RNase A; 3. HBc33 VLP treated with RNase A and packaged with NKCpG; 4. HBc33 VLP treated with RNase A, packaged with NKCpG, treated with DNaseI and dialysed; 5. 1 kb MBI Fermentas DNA ladder.
- (C) depicts the analysis of the amount of packaged oligo extracted from the VLP on a 15% TBE/urea gel stained with CYBR Gold. Loaded on gel are the following samples: 1. NKCpG oligo content HBc33 after proteinase K digestion and RNase A treatment; 2. 20 pmol NKCpG control; 3. 10 pmol NKCpG control; 4. 40 pmol NKCpG control
- FIG. 19 depicts the analysis of g10gacga-PO packaging into HBc33 VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are 15 ⁇ g of the following samples: 1. 1 kb MBI Fermentas DNA ladder; 2. HBc33 VLP untreated; 3. HBc33 VLP treated with RNase A; 4. HBc33 VLP treated with RNase A and packaged with g10gacga-PO; 5. HBc33 VLP treated with RNase A, packaged with g10gacga-PO, treated with Benzonase and dialysed.
- FIG. 20 depicts the analysis of CyCpG-150 packaging into HBc33 VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are 15 ⁇ g of the following samples: 1. 1 kb MBI Fermentas DNA ladder; 2. HBc33 VLP untreated; 3. HBc33 VLP treated with RNase A; 4. HBc33 VLP treated with RNase A and packaged with CyCpG-150; 5. HBc33 VLP treated with RNase A, packaged with CyCpG-150, treated with DNaseI and dialysed; 6.
- C depicts the analysis of the amount of packaged oligo extracted from the VLP on a 10% TBE/urea gel stained with CYBR Gold. Loaded on gel are the following samples: 1. 20 pmol CyCpG-150 control; 2. 10 pmol CyCpG-150 control; 3. 4 pmol CyCpG-150 control; 4. CyCpG-150 oligo content of 4 ⁇ g HBc33 after 3 min at 95° C. with 1 volume TBE/urea sample buffer.
- FIG. 21 depicts the analysis of NKCpGpt packaging into HBcP1A VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are 15 ⁇ g of the following samples: 1. 1 kb MBI Fermentas DNA ladder; 2. HBcP1A VLP untreated; 3. HBcP1A VLP treated with RNase A; 4. HBcP1A VLP treated with RNase A and packaged with NKCpGpt.
- Immunostimulatory Nucleic Acids can be Packaged in HBcAg-wt Coupled with Antigens
- HBcAg-wt VLPs were packaged after coupling with peptide p33 (CGG-KAVYNFATM), derived from lymphocytic choriomeningitis virus (LCMV).
- CGG-KAVYNFATM lymphocytic choriomeningitis virus
- LCMV lymphocytic choriomeningitis virus
- VLPs were dialyzed to Mes buffer (2-(N-morpholino) ethanesulphonic acid) pH 7.4 for 2 ⁇ 2 h using MWCO 10.000 kD dialysis membranes at 4° C.
- VLPs 50 ⁇ M
- VLPs were subsequently coupled to the N-terminal cysteine of the p33 peptide (250 ⁇ M) during a 2 h incubation in a thermomixer at 25° C.
- Samples were dialyzed (MWCO 300.000) extensively to 1 ⁇ PBS pH 7.4 to eliminate undesired free peptide.
- FIG. 22 shows SDS-PAGE analysis of HBcAg wt VLPs derivatization with SMPH and coupling to p33 peptide.
- Samples were analysed by 16% SDS PAGE and stained with Coomassie Blue.
- HBcAg-wt was visible as a 21 kD protein band. Due to the low molecular weigth of SMPH is the derivatised product only slightly larger and can not be distinguished by SDS-PAGE.
- Peptide alone was visible as a 3 kD band and coupled product, termed HBx33, showed a strong secondary band at approximately 24 kD accounting for more than 50% of total HBcAg-wt.
- Enzymatic RNA hydrolysis HBx33 VLPs (0.5-1.0 mg/ml, 1 ⁇ PBS buffer pH 7.4) in the presence of RNase A (300 ⁇ g/ml, Qiagen AG, Switzerland) were diluted with 4 volumes H 2 O to decrease salt concentration to a final 0.2 ⁇ PBS concentration and incubated for 3 h at 37° C. in a thermomixer at 650 rpm.
- VLP preparations for mouse immunization were extensively dialysed (2 ⁇ against 200-fold volume) for 24 h against PBS pH 7.4 with a 300 kDa MWCO dialysis membrane (Spectrum Medical industries Inc., Houston, USA) to eliminate RNase A and the excess of CpG-oligonucleotides.
- FIG. 23 shows that RNAse treatment reduced the nucleic acid content of the capsids and slowed their migration. Addition of B-CpGpt restored nucleic acid content and fast migration of capsids. DNAse I only digested the free oligonucleotides while the packaged oligonucleotides remained in the VLP also after dialysis (FIG. 23).
- FIG. 22 depicts the SDS-PAGE analysis of the p33 coupling to HBc VLPs after Coomassie Blue staining. Loaded on the gel are the following samples: 1.NEB Prestained Protein Marker, Broad Range (# 7708S), 10 ⁇ l; 2. CGG-p33 peptide; 3. HBc VLP derivatized with SMPH, before dialysis; 4. HBc VLP derivatized with SMPH, after dialysis; 5. HBc VLP coupled with CGG-p33, supernatant; 6. HBc VLP coupled with CGG-p33, pellet.
- FIG. 23 depicts the analysis of B-CpGpt packaging into HBx33 VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassic Blue (B). Loaded on the gel are 50 ⁇ g of the following samples: 1. HBx33 VLP untreated; 2. HBx33 VLP treated with RNase A; 3. HBx33 VLP treated with RNase A and packaged with B-CpGpt; 4. HBx33 VLP treated with RNase A, packaged with B-CpGpt and treated with DNaseI; 5. HBx33 VLP treated with RNase A, packaged with B-CpGpt, treated with DNaseI and dialysed; 6. 1 kb MBI Fermentas DNA ladder
- Immunostimulatory Nucleic Acids can be Packaged into Q ⁇ VLPs Coupled with Antigens
- Recombinantly produced Q ⁇ VLPs were used after coupling to p33 peptides containing an N-terminal CGG or and C-terminal GGC extension (CGG-KAVYNFATM and KAVYNFATM-GGC).
- Recombinantly produced Q ⁇ VLPs were derivatized with a 10 molar excess of SMPH (Pierce) for 0.5 h at 25° C., followed by dialysis against 20 mM HEPES, 150 mM NaCl, pH 7.2 at 4° C. to remove unreacted SMPH.
- Peptides were added in a 5 fold molar excess and allowed to react for 2 h in a thermomixer at 25° C. in the presence of 30% acetonitrile.
- FIG. 24 shows the SDS-PAGE analysis demonstrating multiple coupling bands consisting of one, two or three peptides coupled to the Q ⁇ monomer (Arrows, FIG. 24).
- Q ⁇ VLPs when produced in E. coli by expressing the bacteriophage Q ⁇ capsid protein, contain RNA which can be digested and so eliminated by incubating the VLPs with RNase A.
- Q ⁇ VLPs at a concentration of 1.0 mg/ml in 20 mM Hepes/150 mM NaCl buffer (HBS) pH 7.4 were either digested directly by addition of RNase A (300 ⁇ g/ml, Qiagen AG, Switzerland) or were diluted with 4 volumes H 2 O to a final 0.2 ⁇ HBS concentration and then incubated with RNase A (60 ⁇ g/ml, Qiagen AG, Switzerland). Incubation was allowed for 3 h at 37° C. in a thermomixer at 650 rpm.
- FIG. 25 demonstrates that in 1 ⁇ HBS only a very weak reduction of RNA content was observed, while in 0.2 ⁇ HBS most of the RNA were hydrolysed. In agreement, capsid migration was unchanged after addition of RNAse A in 1 ⁇ HBS, while migration was slower after addition of RNAse in 0.2 ⁇ HBS (FIGS. 25B,D).
- FIG. 27 shows that the different nucleic acids B-CpGpt, glogacga and the 253mer dsDNA could be packaged into Qbx33.
- Packaged nucleic acids were resistant to DNAse I digestion and remained packaged during dialysis (FIG. 27).
- Packaging of B-CpGpt was confirmed by release of the nucleic acid by proteinase K digestion followed by agarose electrophoresis and ethidium bromide staining (FIG. 27C).
- FIG. 24 depicts the SDS-PAGE analysis of the p33 coupling to Q ⁇ VLPs after Coomassie Blue staining. Loaded are the following samples: (A) 1. NEB Prestained Protein Marker, Broad Range (# 7708S), 10 ⁇ l; 2. Q ⁇ VLP, 14 ⁇ g; 3. Q ⁇ VLP derivatized with SMPH, after dialysis; 4. Q ⁇ VLP coupled with CGG-p33, supernatant. (B) 1. NEB Prestained Protein Marker, Broad Range (# 7708S), 10 ⁇ l; 2. Q ⁇ VLP, 10 ⁇ g; 3. Q ⁇ VLP coupled with GGC-p33, supernatant.
- FIG. 25 depicts the analysis of RNA hydrolysis from Q ⁇ VLPs by RNase A under low and high ionic strength on a 1% agarose gel stained with ethidium bromide (A, C) and Coomassie Blue (B, D). Loaded on the gel are the following samples: (A, B) 1. MBI Fermentas 1 kb DNA ladder; 2. Q ⁇ VLP untreated; 3. Q ⁇ VLP treated with RNase A in 1 ⁇ HBS buffer pH 7.2. (C, D) 1. MBI Fermentas 1 kb DNA ladder; 2. Q ⁇ 3 VLP untreated; 3. Q ⁇ VLP treated with RNase A in 0.2 ⁇ HBS buffer pH 7.2.
- FIG. 26 depicts the analysis of B-CpG packaging into Q ⁇ VLPs under low and high ionic strength on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are the following samples: 1. Q ⁇ VLP untreated; 2. Q ⁇ VLP treated with RNase A; 3. Q ⁇ VLP treated with RNase A and packaged with B-CpG in 0.2 ⁇ HBS buffer pH 7.2 and treated with Benzonase; 4. HBx33 VLP treated with RNase A, packaged with B-CpG in 1 ⁇ HBS buffer pH 7.2 and treated with Benzonase.
- FIG. 27 depicts the analysis of B-CpGpt packaging into Qbx33 VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are 50 ⁇ g of the following samples: 1. Qbx33 VLP untreated; 2. Qbx33 VLP treated with RNase A; 3. Qbx33 VLP treated with RNase A and packaged with B-CpGpt; 4. Qbx33 VLP treated with RNase A, packaged with B-CpGpt, treated with DNaseI and dialysed; 5.1 kb MBI Fermentas DNA ladder.
- (C) depicts the analysis of the amount of packaged oligo extracted from the VLP on a 15% TBE/urea stained with CYBR Gold. Loaded on gel are the following samples: 1. BCpGpt oligo content of 2 ⁇ g Qbx33 VLP after proteinase K digestion and RNase A treatment; 2. 20 pmol BCpGpt control; 3. 10 pmol BCpGpt control; 4. 5 pmol BCpGpt control
- FIG. 27D and E depict the analysis of g10gacga-PO packaging into Qbx33 VLPs on a 1% agarose gel stained with ethidium bromide (D) and Coomassie Blue (E). Loaded on the gel are 15 ⁇ g of the following samples: 1. MBI Fermentas 1 kb DNA ladder; 2. Qbx33 VLP untreated; 3. Qbx33 VLP treated with RNase A; 4. Qbx33 VLP treated with RNase A and packaged with g10gacga-PO; 5. Qbx33 VLP treated with RNase A, packaged with g10gacga-PO, treated with Benzonase and dialysed.
- FIGS. 27E and F depict the analysis of dsCyCpG-253 packaging into Qbx33 VLPs on a 1% agarose gel stained with ethidium bromide (E) and Coomassie Blue (F). Loaded on the gel are 15 ⁇ g of the following samples: 1. MBI Fermentas 1 kb DNA ladder; 2. Qbx33 VLP untreated; 3. Qbx33 VLP treated with RNase A; 4. Qbx33 VLP treated with RNase A, packaged with dsCyCpG-253 and treated with DNaseI; 5. Qbx33 VLP treated with RNase A, packaged with dsCyCpG-253, treated with DNaseI and dialysed.
- Disassembly 70 mg of pure lyophilized Q ⁇ VLP gave a protein content of about 35 mg, according to spectrophotometric determination using the average result obtained with the following three formulae: 1. (183*OD 230 nm ⁇ 75.8*OD 260 nm )*volume (ml) ⁇ 2. ((OD 235 nm ⁇ OD 280 nm )/2.51) ⁇ volume ⁇ 3.(OD 228.5 nm ⁇ OD 234.5 nm )*0.37) ⁇ volume.
- the pure lyophilized Q ⁇ VLP was solubilized in 7 ml of 6 M GuHCl and incubated overnight at 4° C.
- the solution was clarified for 15 minutes, at 6000 rpm (Eppendorf 5810 R, in fixed angle rotor F34-6-38, used in all the following steps). A negligible sediment was discarded, and the supernatant was dialysed 5 ⁇ against 200-300 ml NET buffer (20 mM Tris-HCl, pH 7.8 with 5 mM EDTA and 150 mM NaCl) over 3 days. Alternatively, the supernatant was dialyzed in a continuous mode against 1.5 l NET buffer over 3-4 days. The resulting suspension was centrifuged at 12000 rpm for 20 minutes.
- the pellet was resolubilized in 2-3 ml 8 M urea, while the supernatant was precipitated with solid ammonium sulphate at 60% saturation.
- a saturated ammonium sulphate solution was added to the pellet previously resolubilized in urea to 60% saturation, and the solution was left to precipitate 4 days at 4° C., with subsequent centrifugation at 12000 rpm for 20 minutes.
- This pellet, and the pellet of the initial supernatant were resolubilized and joined in a total volume of 3 ml of 7 M urea, 10 mM DTT.
- This material was loaded on a Sephadex G75 column, eluted at 2 ml/h with 7 M urea, 10 mM DTT.
- Reassembly ⁇ -mercaptoethanol was added to the 10 ml dimer fraction to a final concentration of 10%, and 300 ⁇ l of a solution of (CpG) 20 OpA oligodeoxynucleotide, containing 12.3 nmol of oligonucleotide, were added.
- the reassembly mixture was first dialyzed against 30 ml NET buffer containing 10% beta-mercaptoethanol for 2 hours at 4° C., and then dialyzed in a continuous mode, with a flow of NET buffer of 8 ml/h over 4 days at 4° C.
- the reassembly mixture was then desalted against water by dialysis, with 6 buffer exchanges (4 ⁇ 100 ml, 2 ⁇ 1 liter).
- the ratio of absorbance at 280 nm vs. 260 nm was of 0.167/0.24.
- the protein was dried by lyophilization. The dried protein was resolubilized in water and purified by ultracentrifugation on a sucrose gradient in a Beckman L 8-80 centrifuge, with the SW 50.1 rotor at 22 000 rpm, for 17h at +4° C.
- the sucrose gradient purification was performed as follows. 5 layers of 1 ml of the following sucrose concentrations (w/v) were dispensed into a centrifuge tube: 50%, 43%, 36%, 29% and 22%. The so formed succession of layers was left standing overnight at 4° C.
- the reassembled Q ⁇ had the same apparent density as wt Q ⁇ within experimental error.
- the fractions 6-9 of the sucrose gradient were pooled, dialyzed against water and lyophilized. This material was then resolubilized for electron microscopy (EM) analysis (FIG. 29) and Ouchterlony assay (FIG. 30A and B).
- EM electron microscopy
- FIG. 29 A suspension of the proteins was absorbed on carbon-formvar coated grids and stained with 2% phosphotungstic acid (pH 6,8). The grids were examined with a JEM 100C (JEOL,Japan) electron microscope at an accelerating voltage of 80 kV.
- Photographic records were performed on Kodak electron image film and electron micrographs were obtained by printing of negatives on Kodak Polymax paper. Both methods indicate that the reassembled VLPs have the same macromolecular properties as intact Q ⁇ VLP.
- the pattern of disulfide bonds displayed by the purified reassembled Q ⁇ VLP is indistinguishable from the disulfide bond pattern displayed by the untreated Q ⁇ VLP, with the typical pattern of pentamers and hexamers (FIG. 31A).
- Reassembled Q ⁇ VLP was digested with pancreatic DNAse I as follows. To 200 ⁇ l of a 0.5 mg/ml solution of Qp VLP reassembled with (CpG) 20 OpA oligodeoxynucleotide were added 20 ⁇ L of a 1 U/ ⁇ l DNAse I (Fluka) solution, and 22 ⁇ l of DNAse I buffer (20 mM MgCl 2 , 200 mM Tris, pH 8.3). The reaction mixture was incubated for 2h30 min. at 37° C.
- the nucleic acid content of the sample was subsequently isolated by phenol/chloroform extraction, and loaded on a 2% agarose gel stained with ethidium bromide (FIG. 31B). A band of the size of the packaged oligodeoxynucleotide was detected on the gel. A band migrating at a higher apparent molecular weight was also visible. We cannot exclude the presence of multimers of the (CpG) 20 OpA oligodeoxynucleotide which would lead to a band at this height.
- the gel thus shows that DNAse I protected oligodeoxynucleotides of the right size were present in the reassembled Q ⁇ VLP, since the oligodeoxynuleotides could subsequently be digested by DNAse I, but not by RNAse A. Oligodeoxynucleotides could thus be successfully packaged in Q ⁇ VLP after initial disassembly of the VLP, purification of the disassembled coat protein from nucleic acids and subsequent reassembly of the VLP in the presence of oligodeoxynucleotide.
- FIG. 28 shows the SDS-PAGE analysis of the fractions from the sucrose gradient centrifugation. Loaded on the gels were the following samples. Lane 1-10: fractions 6-15 of the sucrose gradient ultracentrifugation.
- FIG. 29 shows the EM pictures of (A) intact Q ⁇ VLP and (B) Q ⁇ VLP after disassembly and reassembly in the presence of oligonucleotide (CpG) 20 OpA, and subsequent purification by sucrose gradient ultra-centrifugation. A dense overlay of capsids is observed, and those capsids display the same structural features and properties as the intact Q ⁇ VLPs.
- CpG oligonucleotide
- FIG. 30 shows the Ouchterlony analysis (immunodiffusion) of the reconstructed Q ⁇ VLP.
- Q ⁇ VLP reassembled with oligonucleotide (CpG)200 pA was loaded next to intact Q ⁇ VLP.
- the two characteristic precipitation bands are indicated by black arrows.
- the two precipitation bands are concurrent, indicating that the reassembled Q ⁇ VLP diffuse as the intact Q ⁇ VLP.
- sample 1 is Q ⁇ VLP reassembled in the presence of ribosomal RNA
- sample 2 is intact Q ⁇ VLP
- sample 3 is Q ⁇ VLP reassembled with oligonucleotide (CpG)20OpA.
- the precipitation bands are indicated by white arrows.
- FIG. 31A shows the analysis of the untreated and reassembled Q ⁇ VLP by non-reducing SDS-PAGE.
- the pentamers and hexamers of Q ⁇ VLP are indicated by arrows.
- FIG. 31B shows the agarose gel electrophoresis analysis of the nucleotide content extracted after DNAse I digestion of Q ⁇ VLP reassembled with oligonucleotide (CpG)20OpA.
- the nucleic acid content was either untreated (lane 1), or subsequently digested with DNAse I (lane2) or RNAse A (lane 3); 33 ⁇ g of reassembled Q ⁇ VLP were loaded on each lane. 300 ng of a 50 bp oligonucleotide were loaded on lane 4, while 10 ⁇ l of the GeneRuler 100 bp DNA ladder +marker (MBI Fermentas) was loaded on lane 5.
- oligonucleotide to capsid 180 subunits
- the reassembly mixture was first dialyzed against 30 ml NET buffer containing 10% ⁇ -mercaptoethanol for 1 hours at 4° C., and then dialyzed in a continuous mode, with a flow of NET buffer of 8 ml/h over 4 days at 4° C.
- a sample of the reassembly reaction of Q ⁇ VLP with oligodeoxynucleotide CyOpA was taken for EM analysis (FIG. 32) at the end of the reassembly reaction. The EM procedure using phosphotungstic acid and described above was used.
- the reassembly mixtures were then desalted against water by dialysis and dried.
- the dried protein was resolubilized in water and purified by ultracentrifugation on a sucrose gradient.
- the purified reassembled Q ⁇ VLPs were also analyzed by EM (FIGS. 33 A-D).
- the electron micrographs indicate that the reassembled VLPs have the same macromolecular properties as intact Q ⁇ VLP. Purification notably enriches the preparations for reassembled particles.
- Q ⁇ VLP was successfully reassembled with oligodeoxynucleotides of various lengths and sequences.
- the dialysed derivatized Q ⁇ VLP at a concentration of 1.4 mg/ml was subsequently reacted with the p33GGC peptide (sequence: KAVYNFATMGGC) at a final concentration of peptide of 250 ⁇ M for 2 hours at 15° C. in 20 mM Hepes, 150 mM NaCl, pH 7.4.
- the gel of FIG. 34 indicates successful coupling of the p33 peptide to Q ⁇ VLP. Coupling bands corresponding to one, respectively two peptides coupled per subunit are indicated by an arrow in the Figure.
- nucleic acid content of reassembled and coupled Q ⁇ VLP was analysed by proteinase K digestion, phenol cloroform extraction and subsequent loading of the extracted oligonucleotide on a TBE/Urea PAGE gel.
- the analysis procedure was as follows. 25 ⁇ l reassembled Q ⁇ VLP (0.5-1 mg/ml) were supplemented with 0.5 ⁇ l proteinase K, 1.5 ⁇ l 10% SDS and 3 ⁇ l 10 ⁇ proteinase buffer (0.5 M NaCl, 50 mM EDTA, 0.1 M Tris pH 7.4). After incubation overnight at 37° C., proteinase K was inactivated by heating 20 min at 65° C.
- RNAseA Qiagen, 100 ⁇ g/ml, diluted 250 ⁇ .
- the equivalent of 2 ⁇ g starting protein was heated 3 min at 95° C. with 1 volume of 2 ⁇ loading buffer (1 ml 10 ⁇ TBE, 4.2 g Urea, 1.2 g Ficoll, 1 ml 0.1%Bromophenolblue, H 2 O up to 10 ml) and loaded on a 15% TBE/Urea polyacrylamide gel (Invitrogen).
- the gel was run for 1.5 h at 180 V, and fixed in 10% acetic acid/20% ethanol and stained with CYBR Gold (Molecular Probes, Eugene, Oreg., USA).
- 10 and 20 pmol of the oligonucleotide used for the reassembly were applied on the gel as a reference. Resistance of the nucleic acid content to RNAse and its size proved that the packaged nucleic acid was the oligonucleotide used for reassembly.
- Quantification of the packaged oligodeoxynucleotide was performed by comparison of the band intensity of the extracted oligonucleotide with the band intensity of a reference amount of the same oligonucleotide loaded on the same gel.
- a figure of 1.75 nmol CyOpA/100 ⁇ g Q ⁇ VLP was obtained, giving a ratio of 44 oligonucleotides per VLP on average.
- FIG. 32 depicts the electron micrographs of the reassembly reaction of Q ⁇ VLP with the oligonucleotide CyOpA before purification. The magnification was 200 000 fold.
- FIGS. 33 A-D show the electron micrographs of the purified reassembly reactions of Q ⁇ VLP with the oligodeoxynucleotides Cy(CpG)20 (A), CyCyCy (B), CyCpG (C) and CyOpA (D).
- the magnification was 200 000 fold.
- FIG. 34 depicts the SDS-PAGE analysis of the coupling of Q ⁇ VLP reassembled with the oligodeoxynucleotide CyOpA to the p33GGC peptide. Loaded on the gel were the following samples: 1. Prestained Protein Marker, Broad Range (# 7708S) 10 ⁇ l; 2. Q ⁇ VLP reassembled with CyOpA [1.5 mg/ml] 10 ⁇ l; 3. Q ⁇ VLP reassembled with CyOpA [1.5 mg/ml] and derivatized with SMPH 10 ⁇ l; 4.
- FIG. 35 depicts the analysis of the extracted packaged oligodeoxynucleotides by Urea Polyacrylamide gel electrophoresis, stained with CYBR Gold. The following samples were loaded on the gel: 1. Q ⁇ VLP reassembled with oligonucleotide CyOpA and coupled to p33 GGC peptide, 2 ⁇ g protein loaded on the gel. 2. Q ⁇ VLP reassembled with oligonucleotide CyOpA and coupled to p33GGC peptide, frozen and thawed before loading on the gel, 2 ⁇ g protein. 3.
- Protein concentration was determined by Bradford analysis and 5 mg total protein was applied onto a HiLoadTM SuperdexTM 75 prep grade column (26/60, Amersham Biosciences) equilibrated with 7 M urea, 100 mM TrisHCl and 10 mM DTT. Size exclusion chromatography was performed with the equilibration buffer (7 M urea, 100 mM TrisHCl pH 8.0, 10 mM DTT) at 12° C. with a flow-rate of 0.5 ml/min. During the elution absorbance at 254 nm and 280 nm was monitored. Two peaks were isolated. A high molecular weight peak preceded a peak of lower apparent molecular weight. Peaks were collected in fractions of 1.5 ml and aliquots were analysed by SDS-PAGE followed by Coomassie staining as well as SYBR® Gold staining (FIG. 36).
- Protein concentration was determined by Bradford analysis and 10 mg total protein was diluted to a final volume of 10 ml with buffer A (see below) and applied with a flowrate of 1 ml/min to a 1 ml HiTrapTM SP HP column (Amersham Biosciences, Cat. No. 17-1151-01) equilibrated with buffer A: 7 M urea, 20 mM MES, 10 mM DTT, pH 6.0. The flowthrough which contained the RNA was collected as one fraction.
- Reassembly Purified Q ⁇ coat protein with a concentration of 0.5 mg/ml was used for the reassembly of VLPs in the presence of an oligodeoxynucleotide. For the reassembly reaction the oligodeoxynucleotide was used in a tenfold excess over the calculated theoretical amount of Q ⁇ -VLP capsids (monomer concentration divided by 180).
- this solution (volume up to 5 ml) was first dialysed for 2 h against 500 ml NET buffer containing 10% ⁇ -mercaptoethanol at 4° C., then dialyzed in a continuous mode, with a flow of NET buffer of 8 ml/h over 72 h at 4° C., and finally for another 72 h with the same continous mode with a buffer composed of 20 mM TrisHCl pH 8.0, 150 mM NaCl. The resulting suspension was centrifuged at 14 000 rpm for 10 minutes at 4° C.
- coli served as control and were incubated under the same conditions as described for the capsids which had been reassembled in the presence of oligodeoxynucleotides.
- the reactions were then loaded on a 0.8% agarose gel that was first stained with ethidumbromide (FIG. 40A) and subsequently with Coomassie blue (FIG. 40B).
- the ethidium bromide stain shows, that none of the added enzymes could digest the nucleic acid content in the reassembled Q ⁇ capsids showing that the nucleic acid content (i.e. the oligodeoxynucleotides) is protected.
- the gel thus shows that DNAse I protected oligodeoxynucleotides were present in the reassembled Q ⁇ VLP. Furthermore, after the packaged oligodeoxynuleotides had been extracted by phenol/chloroform they were digestable by DNAse I, but not by RNAse A. Oligodeoxynucleotides could thus be successfully packaged into Q ⁇ VLPs after initial disassembly of the VLP, purification of the disassembled coat protein from nucleic acids and subsequent reassembly of the VLPs in the presence of oligodeoxynucleotides.
- coli served as control and were incubated with proteinase K under the same conditions as described for the capsids which had been reassembled in the presence of oligodeoxynucleotides.
- the reactions were then mixed with a TBE-Urea sample buffer and loaded on a 15% polyacrylamide TBE-Urea gel (Novex®, Invitrogen Cat. No. EC6885).
- TBE-Urea sample buffer As a qualitative as well as quantitative standard, 1 pmol, 5 pmol and 10 pmol of the oligodeoxynucleotide which was used for the reassembling reaction, were loaded onto the same gel.
- This gel was fixed with 10% acetic acid, 20% methanol, equilibrated to neutral pH and stained with SYBR®-Gold (Molecular Probes Cat. No. S-11494).
- SYBR®-Gold stain showed (FIG. 41), that the reassembled Q ⁇ capsids contained nucleic acid comigrating with the oligodeoxynucleotides which were used in the reassembly reaction. Note that intact Q ⁇ VLPs (which had been purified from E. coli ) did not contain a nucleic acid of similar size.
- FIG. 36 shows the purification of disassembled Q ⁇ coat protein by size exclusion chromatography. 5 ⁇ l of the indicated fractions (#) were mixed with sample buffer and loaded onto 16% Tris-Glycine gels (Novex® by Invitrogen, Cat. No. EC64952). After the run was completed the gels were stained first with Coomassie blue (A) and after documentation the same gels were stained with SYBR®-Gold (B). Note that the first high molecular weight peak (fractions #15-#20) contained no protein but nucleic acids. On the other hand, the second peak of lower apparent molecular weight contained disassembled coat protein which was thereby separated from the nucleic acids.
- FIG. 37 shows the purification of reassembled Q ⁇ VLPs by size exclusion chromatography.
- FIG. 38 shows electron micrographs of Q ⁇ VLPs that were reassembled in the presence of different oligodeoxynucleotides.
- the VLPs had been reassembled in the presence of the indicated oligodeoxynucleotides or in the presence of tRNA but had not been purified to a homogenous suspension by size exclusion chromatography.
- positive control served preparation of “intact” Q ⁇ VLPs which had been purified from E. coli .
- VLPs of the correct size and conformation could be formed, when compared to the “positive” control.
- FIG. 39 shows the analysis of the disulfide-bond pattern in reassembled and purified Q ⁇ capsids. 5 ⁇ g of the indicated capsids were mixed with sample buffer that either contained a reducing agent or not and loaded onto a 16% Tris-Glycine gel. After the run was completed the gel was stained with Coomassie blue. When compared to “intact” capsids purified from E. coli , the reassembled Q ⁇ VLPs displayed the same disulfide bond pattern.
- FIG. 40 shows the analysis of nucleic acid content of the reassembled Q ⁇ VLPs by nuclease treatment and agarose gelelectrophoresis: 5 ⁇ g of reassembled and purified Q ⁇ VLPs and 5 ⁇ g of Q ⁇ VLPs which had been purified from E. coli , respectively, were treated as indicated. After this treatment, samples were mixed with loading dye and loaded onto a 0.8% agarose gel. After the run the gel was stained first with ethidum bromide (A) and after documentation the same gel was stained with Coomassie blue (B).
- A ethidum bromide
- B Coomassie blue
- nucleic acid content of the reassembled and purified Q ⁇ VLPs were resistant towards RNase A digestion while the nucleic acid content of Q ⁇ VLPs purified from E. coli was digested upon incubation with RNase A.
- nucleic acid content of the reassembled Q ⁇ capsids consists out of deoxynucleotides which of course are protected from RNase A digestion.
- oligodeoxynucleotides were packaged into Q ⁇ VLPs during the reassembly reaction.
- FIG. 41 shows the analysis of nucleic acid content of the reassembled Q ⁇ VLPs by proteinase K treatment and polyacrylamide TBEIUrea gelelectrophoresis: The equivalent of 1 ug Q ⁇ VLPs which had been digested by proteinase K-treatment was mixed with a TBE-Urea sample buffer and loaded on a 15% polyacrylamide TBE-Urea gel (Novex®, Invitrogen Cat. No. EC6885). As qualitative as well as quantitative standard, 1 pmol, 5 pmol and 10 pmol of the oligodeoxynucleotide which was used for the reassembly reaction, was loaded onto the same gel.
- Disassembly 40 mg of lyophilized purified AP205 VLP were resolubilized in 4 ml 6 M GuHCl, and incubated overnight at 4° C. The disassembly mixture was centrifuged at 8000 rpm (Eppendorf 5810 R, in fixed angle rotor F34-6-38, used in all the following steps). The pellet was resolubilized in 7 M urea, while the supernatant was dialyzed 3 days against NET buffer (20 mM Tris-HCl, pH 7.8 with 5 mM EDTA and 150 mM NaCl) with 3 changes of buffer. Alternatively, dialysis was conducted in continuous mode over 4 days.
- NET buffer 20 mM Tris-HCl, pH 7.8 with 5 mM EDTA and 150 mM NaCl
- the dialyzed solution was centrifuged at 8000 rpm for 20 minutes, and the pellet was resolubilized in 7 M urea, while the supernatant was pelletted with ammonium sulphate (60% saturation), and resolubilized in a 7 M urea buffer containing 10 mM DTT.
- the previous pellets all resolubilized in 7 M urea were joined, and precipitated with ammonium sulphate (60% saturation), and resolubilized in a 7 M urea buffer containing 10 mM DTT.
- Reassembly 1.1 ml beta-mercaptoethanol was added to the sample, and the following reassembly reactions were set up:
- the EM analysis of AP205 reassembled with CyCpG is shown on FIG. 42B.
- the EM procedure was as follows: A suspension of the proteins was absorbed on carbon-formvar coated grids and stained with 2% phosphotungstic acid (pH 6,8). The grids were examined with a JEM 100C (JEOL,Japan) electron microscope at an accelerating voltage of 80 kV. Photographic records (negatives) were performed on Kodak electron image film and electron micrographs were obtained by printing of negatives on Kodak Polymax paper.
- the VLP reassembled in the presence of the CyCpG was purified over a Sepharose 4B column (1 ⁇ 50 cm), eluted with NET buffer (1 ml/h).
- a band migrating at the same height than intact AP205 VLP and staining both for ethidium-bromide and Coomassie blue staining could be obtained, showing that AP205 VLP containing oligodeoxynucleotide had been reassembled.
- the extensive dialysis steps following the reassembly procedure are likely to have led to diffusion of the oligodeoxynucleotide outside of the VLPs.
- the AP205 VLPs could also be reassembled in the absence of detectable oligodeoxynucleotide, as measured by agarose gel electrophoresis using ethidium bromide staining.
- Oligodeoxynucleotides could thus be successfully bound to AP205 VLP after initial disassembly of the VLP, purification of the disassembled coat protein from nucleic acids and subsequent reassembly of the VLP in the presence of oligodeoxynucleotide.
- FIG. 42 shows electron micrographs of either intact recombinant AP205 VLP used for the disassembly step (A), or AP205 VLP disassembled, and subsequently reassembled in the presence of CyCpG (B).
- FIG. 43 shows the agarose gel-electrophoresis analysis of the AP205 VLP sample reassembled in the presence of CyCpG, and taken directly after the reassembly step before dialysis.
- the gel on FIG. 43A was stained with ethidium-bromide.
- AP205 VLP reassembled with CyCpG was loaded on lane1, while untreated pure AP205 VLP was loaded on lane 2.
- the arrow indicates the band of the reassembled AP205 VLP.
- the gel on FIG. 43B was stained with Coomassie-brillant blue. Untreated AP205 VLP was loaded on lane 1, while AP205 VLP reassembled with CyCpG was loaded on on lane 2.
- Disassembly 100 mg of purified and dried recombinant AP205 VLP (Cytos patent) were used for disassembly as described above. All steps were performed essentially as described under disassembly in part A, but for the use of 8 M urea to solublize the pellets of the ammonium sulphate precipitation steps and the omission of the gel filtration step using a CL-4B column prior to reassembly.
- the pooled fractions of the Sephadex G-75 column contained 21 mg of protein as determined by spectroscopy using the formula described in part A.
- the ratio of absorbance at 280 nm to the absorbance at 260 nm of the sample was of 0.16 to 0.125. The sample was diluted 50 times for the measurement.
- Reassembly The protein preparation resulting from the Sephadex G-75 gel filtration purification step was precipitated with ammonium sulphate at 60% saturation, and the resulting pellet solubilized in 2 ml 7 M urea, 10 mM DTT. The sample was diluted with 8 ml of 10% 2-mercaptoethanol in NET buffer, and dialyzed for 1 hour against 40 ml of 10% 2-mercaptoethanol in NET buffer. Reassembly was initiated by adding 0.4 ml of a CyCpG solution (109 nmol/ml) to the protein sample in the dialysis bag. Dialysis in continous mode was set up, and NET buffer used as eluting buffer.
- Dialysis was pursued for two days and a sample was taken for EM analysis after completion of this dialysis step (FIG. 44B).
- the dialyzed reassembly solution was subsequently dialyzed against 50% v/v Glycerol in NET buffer, to achieve concentration.
- One change of buffer was effected after one day of dialysis.
- the dialysis was pursued over a total of three days.
- FIG. 44A Depicted on FIG. 44A is an electron micrograph of the disassembled AP205 VLP protein, while FIG. 44B shows the reassembled particles before purification.
- FIG. 3C shows an electron micrograph of the purified reassembled AP205 VLPs. The magnigication of FIGS. 3 A-C is 200 000 ⁇ .
- FIGS. 45A and B show the reassembled AP205 VLPs analyzed by agarose gel electrophoresis.
- the samples loaded on the gel from both figures were, from left to right: untreated AP205 VLP, 3 samples with differing amount of AP205 VLP reassembled with CyCpG and purified, and untreated Q ⁇ VLP.
- the gel on FIG. 45A was stained with ethidium bromide, while the same gel was stained with Coomassie blue in FIG. 45B.
- FIG. 46 depicts an SDS-PAGE analysis of reassembled AP205 VLP, loaded under non-reducing conditions. 5 samples were loaded on the gel. The samples loaded on the gel are, from left to right: Protein Marker, untreated wt Q ⁇ , reassembled wt Q ⁇ , untreated AP205 VLP, reassembled AP205 VLP.
- the Molecular Weight of the AP205 VLP subunit is 14.0 kDa, while the molecular weight of the Q ⁇ subunit is 14.3 kDa (both molecular weights calculated with the N-terminal methionine).
- the disulfide linked multimers are each indicated by an arrow on the figure.
- Reassembled AP205 VLP obtained as described in part B, and in 20 mM Hepes, 150 mM NaCl, pH 7.4 was reacted at a concentration of 1.4 mg/ml with a 5-fold excess of the crosslinker SMPH diluted from a 50 mM stock in DMSO for 30 minutes at 15° C.
- the obtained so-called derivatized AP205 VLP was dialyzed 2 ⁇ 2 hours against at least a 1000-fold volume of 20 mM Hepes, 150 mM NaCl, pH 7.4 buffer.
- the derivatized AP205 was reacted at a concentration of 1 mg/ml with either a 2.5-fold, or with a 5-fold excess of peptide, diluted from a 20 mM stock in DMSO, for 2 hours at 15° C. The sample was subsequently flash frozen in liquid nitrogen for storage.
- FIG. 47 Depicted on FIG. 47 is the SDS-PAGE analysis of the coupling reaction.
- the following samples (from left to right) were loaded on the gel: protein marker; derivatized AP205 VLP (d); AP205 VLP coupled with a 2.5-fold excess of peptide, supernatant (s); AP205 VLP coupled with a 2.5-fold excess of peptide, pellet (p); AP205 VLP coupled with a 5-fold excess of peptide, supernatant (s); AP205 VLP coupled with a 5-fold excess of peptide, pellet (p).
- mice were left untreated or immunized s.c. with 100 ⁇ g HBc33 alone, 20 nmol CyCpGpt, 100 ⁇ g HBc33 mixed with 20 nmol CyCpGpt, or 100 ⁇ g HBc33 packaged with CyCpGpt. Twelve days later, spleens were isolated and spleen weigths and splenic cellularity were assessed. CyCpGpt induced a massive increase in spleen weight and number of cells when given alone (FIG. 48). No such effect was seen with CyCpGpt packaged in HBc33 although this composition was able to induce protection against viral challenge (see EXAMPLE 4).
- mice Groups of three female C57B1/6 mice were immunized s.c. with 100 ⁇ g VLP coupled or fused to p33 alone, mixed with 20 nmol immunostimulatory nucleic acid or packaged with immunostimulatory nucleic acid.
- mice were infected 7-9 days later, i.p., with 1.5 ⁇ 10 6 pfu recombinant vaccinia virus expressing the LCMV-glycoprotein (inclusive of the p33 peptide). Five days later the ovaries were collected and viral titers determined.
- ovaries were ground with a homogenizer in Minimum Essential Medium (Gibco) containing 5% fetal bovine serum and supplemented with glutamine, Earls's salts and antibiotics (penicillin/streptomycin/amphotericin).
- the suspension was titrated in tenfold dilution steps onto BSC40 cells. After overnight incubation at 37° C., the adherent cell layer was stained with a solution consisting of 50% ethanol, 2% crystal violet and 150 mM NaCl for visualization of viral plaques.
- Non-immunized naive mice were used as control.
- mice were immunized s.c. with 100 ⁇ g VLP coupled or fused to p33 alone or mixed with adjuvant/20 nmol CpG oligonucleotide.
- mice were infected i.p. 11-13 days later with 200 pfu LCMV-WE. Four days later spleens were isolated and viral titers determined. The spleens were ground with a homogenizer in Minimum Essential Medium (Gibco) containing 2% fetal bovine serum and supplemented with glutamine, earls's salts and antibiotics (penicillin/streptomycin/amphotericin).
- Minimum Essential Medium Gibco
- the suspension was titrated in tenfold dilution steps onto MC57 cells. After incubation for one hour the cells were overlayed with DMEM containing 5% Fetal bovine serum, 1% methyl cellulose, and antibiotics (penicillin/streptomycin/amphotericin). Following incubation for 2 days at 37° C. the cells were assessed for LCMV infection by the intracellular staining procedure (which stains the viral nucleoprotein): Cells were fixed with 4% Formaldehyde for 30 min followed by a 20 min lysing step with 1% Triton X-100. Incubation for 1 hour with 10% fetal bovine serum blocked unspecific binding.
- HBc33 The fusion protein of HBcAg with the peptide p33 (HBc33) was produced as described in EXAMPLE 1 and packaged with different CpG nucleic acids as described in EXAMPLE 11.
- Double stranded CyCpGpt (dsCyCpGpt) was produced by annealing 0.5 mM of DNA oligonucleotides CyCpGpt and CyCpG-rev-pt (Table I) in 15 mM Tris pH 7.5 by a 10 min heating step at 80° C. and subsequent cooling to RT®. Oligonucleotide hybridization was checked on a 20% TBE polyacrylamid gel (Novex).
- HBc33 capsids containing CyCpG, NKCpG, B-CpG and g10gacga-PS did induce CTL responses capable of completely inhibition viral infection (FIG. 49, FIG. 50). Protection was observed with nucleic acids contained phosphodiester or phosphothioate bonds (pt or PS). Even a double stranded oligonucleotide dsCyCpGpt was inducing protection against vaccinia challenge (FIG. 49).
- HBc33 The fusion protein of HBcAg with the peptide p33 (HBc33) was produced as described in EXAMPLE 1 and packaged with oligonucleotide B-CpGpt as described in EXAMPLE 11. Peptide p33 was coupled to the RNA phage Q ⁇ and oligonucleotide B-CpGpt were packaged as described in EXAMPLE 13. 100 ⁇ g, 30 ⁇ g, 10 ⁇ g or 3 ⁇ g of each vaccine was injected into mice and vaccina titers in the ovaries after recombinant vaccinia challenge were detected as described in EXAMPLE 19. 100 ⁇ g and 30 ⁇ g HBc33 and Qbx33 with packaged B-CpG did induce full protection against viral challenge while at lower concentrations partial or no protection was observed (FIG. 51).
- mice expressing LCMV glycoprotein in pancreatic ⁇ islet cells were immunized with 200 pfu LCMV, 100 ⁇ g HBc33 mixed with 20 nmol CyCpGpt, 100 pg HBc33 packaged with CyCpGpt or 100 ⁇ g p33 peptide mixed with 20 nmol CyCpGpt as control. Blood glucose levels were measured every four days with the Glucotrend Plus Glucose test kit (Roche). Mice with blood glucose levels larger 12 mM were considered diabetic. Immunization with LCMV induced diabetes in 4/4 animals at day 12.
- CyCpGpt mixed with HBc33 only caused diabetes in 1/3 mice.
- Two of three mice immunized with HBc33 in which CyCpGpt was packaged develop diabetes at day 12, the third mouse at day 16.
- Immunization with peptide p33 mixed with CyCpGpt did not induce diabetes in three mice. This clearly shows that immunostimulatory nucleic acid packaged into VLP to which antigens are fused are much more efficient in enhancing a strong CTL response than a mixture of nucleic acid and antigen. They even induced a stronger response than antigen fused to VLP and mixed with the immunostimulatory nucleic acid.
- Immunostimulatory Nucleic Acids Packaged in VLPs-Coupled to Antigens are Even More Efficient in Inducing Antigen-Specific CD8+T Cells Than VLPs Mixed with Immunostimulatory Nucleic Acids
- mice were subcutaneously immunized with 100 ⁇ g HBc33 alone, mixed with CyCpGpt or, alternatively, packaged with CyCpGpt. Untreated mice served as controls.
- HBc33 with packaged CyCpGpt induced a higher frequence of p33-specific CD8+T cells than HBc33 mixed with CyCpGpt (Table II).
- the amount of packaged oligonucleotide is much lower (about ⁇ fraction (1/20) ⁇ ) of the amount of oligonucleotide used in the mixed setting this clearly demonstrates that VLPs with packaged immunostimulatory nucleic acids are even more efficient in inducing high numbers of antigen-specific CD8 + T cells.
- mice were subcutaneously primed with 100 ⁇ g p33-VLP given alone, mixed with 20 nmol CyCpGpt, or, alternatively, packaged with CyCpGpt.
- effector cell suspensions were prepared from spleens of vaccinated mice 9 days after priming.
- EL-4 cells were pulsed with p33 peptide (10-6 M, 2 h at 37° C. in 2% FCS MEM medium) and used in a 5 h 51 Cr release assay.
- FIG. 52 shows the primary ex vivo cytotoxicity of groups of C57BL/6 mice that were subcutaneously primed with 100 ⁇ g p33-VLP given alone (A), mixed with 20 nmol CyCpGpt (B), or, alternatively, packaged with CyCpGpt (C).
- A p33-VLP
- B nmol CyCpGpt
- C CyCpGpt
- FIG. 52 clearly demonstrates that 100 ⁇ g HBc33 alone did not induce primary in vivo CTL response while the same amount HBc33 mixed with 20 nmol CyCpGpt did induce a significant cytotoxicity.
- the amount of packaged oligonucleotide was much lower (about 1/20) of the amount of oligonucleotide used in the mixed setting cytotoxicity was enhanced when 100 ⁇ g HBc33 with packaged CyCpGpt were used for immunization (FIG. 52).
- the dialysed solution was clarified for 10 minutes at 14 000 rpm (Eppendorf 5417 R, in fixed angle rotor F45-30-1 1, used in all the following steps) and proteinconcentration was again determined by Bradford analysis.
- Q ⁇ VLPs in 50 mM TrisHCl pH 8.0, 50 mM NaCl, 5% glycerol, 10 mM MgCl 2 were diluted with the corresponding buffer to a final protein concentration of 1 mg/ml whereas Q ⁇ VLPs in 4 mM HEPES pH 7.4, 30 mM NaCl were diluted with the corresponding buffer to a final protein concentration of 0.5 mg/ml.
- This capsid-containing solutions were centrifuged again for 10 minutes at 14 000 rpm at 4° C.
- the supernatants were than incubated with ZnSO 4 which was added to a final concentration of 2.5 mM for 24 h at 60° C. in an Eppendorf Thermomixer comfort at 550 rpm. After 24 h the solutions were clarified for 10 minutes at 14000 rpm and the sediment was discarded. The efficiency of the ZnSO 4 -dependent degradation of nucleic acids was confirmed by agarose gelelectrophoresis (FIG. 53).
- the supernatants were dialysed against 5000 ml of 4 mM HEPES pH 7.4, 30 mM NaCl for 2h at 4° C. 5000 ml buffer was exchanged once and dialysis continued over night at 4° C. The dialysed solution was clarified for 10 minutes at 14 000 rpm and 4° C., a negligible sediment was discarded and the protein concentration of the supernatants were determined by Bradford analysis.
- ZnSO 4 -treated and dialysed Q ⁇ capsids with a protein concentration (as determined by Bradford analysis) beween 0.4 mg/ml and 0.9 mg/ml (which corresponds to a concentration of capsids of 159 nM and 357.5 nM, respectively) were used for the packaging of the oligodeoxynucleotides.
- the oligodeoxynucleotides were added at a 300-fold molar excess to the of Q ⁇ VLP capsids and incubated for 3 h at 37° C. in an Eppendorf Thermomixer comfort at 550 rpm. After 3 h the reactions were centrifuged for 10 minutes at 14 000 rpm and 4° C.
- the supernatants were dialysed in Spectra/Por®CE DispoDialyzer with a MWCO 300'000 (Spectrum, Cat. No. 135 526) against 5000 ml of 20 mM HEPES pH 7.4, 150 mM NaCl for 8 h at 4° C. 5000 ml buffer was exchanged once and dialysis continued over night at 4° C. The protein concentration of the dialysed samples were determined by Bradford analysis. Q ⁇ capsids and their nucleic acid contents were analyzed as described in Examples 11 and 13.
- FIG. 53 shows the analysis of ZnSO 4 -treated Q ⁇ VLPs by agarose gelelectrophoresis: Q ⁇ VLPs which had been purified from E. coli and dialysed either against buffer 1 (50 mM TrisHCl pH 8.0, 50 mM NaCl, 5% glycerol, 10 mM MgCl 2 ) or buffer 2 (4 mM HEPES, pH 7.4, 30 mM NaCl) were incubated either without or in the presence of 2.5 mM zinc sulfate (ZnSO 4 ) for 24 hrs at 60° C. After this treatment equal amounts of the indicated samples (5 ⁇ g protein) were mixed with loading dye and loaded onto a 0.8% agarose gel. After the run the gel was stained with ethidium bromide. Note that treatment of VLPs with ZnSO 4 causes degradation of the nucleic acid content, while the mock-treated controls were unaffected.
- buffer 1 50 mM TrisHCl pH 8.0, 50 mM Na
- FIG. 54 shows the packaging of oligodeoxynucleotides into ZnSO 4 -treated VLPs and analysis of them by agarose gelelectrophoresis.
- Q ⁇ VLPs which had been treated with 2.5 mM zinc sulfate (+ZnSO 4 ) were dialysed against 4 mM HEPES, pH 7.4, 30 mM NaCl and incubated for 3 hrs at 37° C.
- FIG. 55 shows the analysis of nucleic acid content of ZnSO 4 - and oligodeoxynucleotide treated Q ⁇ VLPs by Benzonase and proteinase K digestion and polyacrylamide TBE/Urea gelelectrophoresis: Oligodeoxynucleotides were packaged into ZnSO 4 -treated Q ⁇ VLPs as described above. 25 ⁇ g of these VLPs were digested with 25 ⁇ l Benzonase (Merck, Cat. No. 1.01694.0001) according to the manufactures instructions.
- the VLPs were treated with Proteinase K (final enzyme concentration was 0.5 mg/ml) according to the manufactures instructions. After 3 hrs the equivalent of 2 ug Q ⁇ VLPs which had been digested by Benzonase and proteinase K were mixed with TBE-Urea sample buffer and loaded on a 15% polyacrylamide TBE-Urea gel (Novex®, Invitrogen Cat. No. EC6885).
- the capsids loaded in lane 2 were treated with 2.5 mM ZnSO 4 in presence of buffer 1 (see above), while the capsids loaded in lane 3 were treated with 2.5 mM ZnSO 4 in presence of buffer 2 (see above).
- nucleic acids isolated from the latter VLPs were comigrating with the oligodeoxynucleotides which had been used in the reassembly reaction. This results confirmed that the used oligodeoxynucleotides were packaged into ZnSO 4 -treated Q ⁇ capsids.
- mice were subcutaneously primed with 20 ⁇ g p33-VLPs containing immunostimulatory nucleic acids. Before immunization, p33-VLP preparations were extensively purified from unbound CpG-oligonucleotides via dialysis (see Example 2 and FIG. 5). 12 days later, blood was taken and frequencies of p33-specific T cells were determined by tetramer staining. The mice were boosted with 200 pfu of live LCMV strain WE and frequencies of specific T cells were determined 5 days later. Frequencies before boost were 3.5% +/ ⁇ 1.8% and after boost 15.5% +/ ⁇ 1.9%.
- mice are subcutaneously primed with 20 ⁇ g p33-VLPs containing immunostimulatory nucleic acids. Before immunization, p33-VLP preparations are extensively purified from unbound CpG-oligonucleotides via dialysis (see Example 2 and FIG. 5). 12 days later, blood is taken and frequencies of p33-specific T cells are determined by tetramer staining. The mice are boosted with 106 pfu of recombinant vaccina virus expressing LCMV-GP and frequencies of specific T cells are determined 5 days later.
- VLPs Containing Immunostimulatory Nucleic Acids Induce T Cell Responses That Can Be Boosted by Viral Vectors Recombinant Canary Pox Virus
- mice are subcutaneously primed with 20 ⁇ g p33-VLPs containing immunostimulatory nucleic acids. Before immunization, p33-VLP preparations are extensively purified from unbound CpG-oligonucleotides via dialysis (see Example 2 and FIG. 5). 12 days later, blood is taken and frequencies of p33-specific T cells are determined by tetramer staining. The mice are boosted with 1 pfu of recombinant canary pox virus expressing LCMV-GP and frequencies of specific T cells are determined 5 days later.
- VLPs Containing Containing Immunostimulatory Nucleic Acids can Boost T Cell Responses
- mice are infected intravenously with recombinant vacccina virus expressing LCMV-GP. 20 days later, blood is taken and frequencies of p33-specific T cells are determined by tetramer staining. The mice are boosted the same day with p33-VLP preparations containing immunostimulatory nucleic acids (see Example 2 and FIG. 5) and frequencies of specific T cells are determined 5 days later.
- Immunostimulatory ribonucleic acids such as poly (I:C) (Sigma) or synthetic double-stranded 30 mer of polyinosinic acid and polycytidylic acid either with phosphodiester or phosphorothiate backbone are dissolved in water.
- polydeoxyinosinic acid and polydeoxyinosinic acid are used to prepare a double stranded poly(I:C) analogon.
- HBc33 VLPs and Q ⁇ VLPs are treated with RNAse as described in Examples 11, 13 or 25 and nucleic acids are added at 1, 10 and 100 nmol/ml in 0.2 ⁇ HBS and incubated for 3 h at 37° C. in a thermomixer. Excess nucleic acids are removed by enzymatic hydrolysis or dialysis and analysed as described in Example 11, 13 and 25.
- immunostimulatory ribonucleic acids and their analoga are packaged during reassembly of Q ⁇ coat proteins as described in Examples 14, 15, 16.
- Reassembly is performed by adding ⁇ -mercaptoethanol to the 10 ml dimer fraction to a final concentration of 10%, and 300 ⁇ l of a solution of nucleic acid, resulting in a 1, 10 and 100 molar excess over capsid concentration, are added.
- the reassembly mixtures are first dialyzed against 30 ml NET buffer containing 10% beta-mercaptoethanol for 2 hours at 4° C., and then dialyzed in a continuous mode, with a flow of NET buffer of 8 ml/h over 4 days at 4° C.
- the reassembly mixtures are then desalted against water by dialysis, with 6 buffer exchanges (4 ⁇ 100 ml, 2 ⁇ 1 liter). Reassembled Q ⁇ VLPs are then isolated by sucrose gradient centrifugation as described in Example 14 or by gel filtration as described in Example 16.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Veterinary Medicine (AREA)
- Pharmacology & Pharmacy (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Immunology (AREA)
- Oncology (AREA)
- Microbiology (AREA)
- Mycology (AREA)
- Epidemiology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Virology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Communicable Diseases (AREA)
- Cell Biology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Tropical Medicine & Parasitology (AREA)
- Genetics & Genomics (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- Pulmonology (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Biophysics (AREA)
- Gastroenterology & Hepatology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Pregnancy & Childbirth (AREA)
- Gynecology & Obstetrics (AREA)
- Developmental Biology & Embryology (AREA)
- Dermatology (AREA)
- Reproductive Health (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention relates to the finding that virus like particles (VLPs) can be loaded with immunostimulatory substances, in particular with DNA oligonucleotides containing non-methylated C and G (CpGs). Such CpG-VLPs are dramatically more immunogenic than their CpG-free counterparts and induce enhanced B and T cell responses. The immune response against antigens optionally coupled, fused or attached otherwise to the VLPs is similarly enhanced as the immune response against the VLP itself. In addition, the T cell responses against both the VLPs and antigens are especially directed to the Th1 type. Antigens attached to CpG-loaded VLPs may therefore be ideal vaccines for prophylactic or therapeutic vaccination against allergies, tumors and other self-molecules and chronic viral diseases.
Description
- This application claims the benefit of U.S. Provisional Application No. 60/318,994, filed Sep. 14, 2001, and U.S. Provisional Application No. 60/374,145, filed Apr. 22, 2002, each of which is hereby incorporated by reference in its entirety.
- 1. Field of the Invention
- The present invention is related to the fields of vaccinology, immunology and medicine. The invention provides compositions and methods for enhancing immunological responses against virus-like particles (VLPs) or against antigens coupled, fused or attached otherwise to VLPs by packaging immunostimulatory substances, in particular immunostimulatory nucleic acids, and even more particular oligonucleotides containing at least one non-methylated CpG sequence, into the VLPs. The invention can be used to induce strong and sustained T cell responses particularly useful for the treatment of tumors and chronic viral diseases as well as allergies and other chronic diseases.
- 2. Related Art
- The essence of the immune system is built on two separate foundation pillars: one is specific or adaptive immunity which is characterized by relatively slow response-kinetics and the ability to remember; the other is non-specific or innate immunity exhibiting rapid response-kinetics but lacking memory. Lymphocytes are the key players of the adaptive immune system. Each lymphocyte expresses antigen-receptors of unique specificity. Upon recognizing an antigen via the receptor, lymphocytes proliferate and develop effector function. Few lymphocytes exhibit specificity for a given antigen or pathogen, and massive proliferation is usually required before an effector response can be measured—hence, the slow kinetics of the adaptive immune system. Since a significant proportion of the expanded lymphocytes survive and may maintain some effector function following elimination of the antigen, the adaptive immune system reacts faster when encountering the antigen a second time. This is the basis of its ability to remember.
- In contrast to the situation with lymphocytes, where specificity for a pathogen is confined to few cells that must expand to gain function, the cells and molecules of the innate immune system are usually present in massive numbers and recognize a limited number of invariant features associated with pathogens (Medzhitov, R. and Janeway, C.A., Jr.,Cell 91:295-298 (1997)). Examples of such patterns include lipopolysaccharides (LPS), non-methylated CG-rich DNA (CpG) or double stranded RNA, which are specific for bacterial and viral infections, respectively.
- Most research in immunology has focused on the adaptive immune system and only recently has the innate immune system entered the focus of interest. Historically, the adaptive and innate immune system were treated and analyzed as two separate entities that had little in common. Such was the disparity that few researchers wondered why antigens were much more immunogenic for the specific immune system when applied with adjuvants that stimulated innate immunity (Sotomayor, E. M., et al.,Nat. Med. 5:780 (1999); Diehl, L., et al., Nat. Med. 5:774 (1999); Weigle, W. O., Adv. Immunol. 30:159 (1980)). However, the answer posed by this question is critical to the understanding of the immune system and for comprehending the balance between protective immunity and autoimmunity.
- Rationalized manipulation of the innate immune system and in particular activation of APCs involved in T cell priming to deliberately induce a self-specific T cell response provides a means for T cell-based tumor-therapy. Accordingly, the focus of most current therapies is on the use of activated dendritic cells (DCs) as antigen-carriers for the induction of sustained T cell responses (Nestle et al.,Nat. Med. 4:328 (1998)). Similarly, in vivo activators of the innate immune system, such as CpGs or anti-CD40 antibodies, are applied together with tumor cells in order to enhance their immunogenicity (Sotomayor, E. M., et al., Nat. Med. 5:780 (1999); Diehl, L., et al., Nat. Med. 5:774 (1999)).
- Generalized activation of APCs by factors that stimulate innate immunity may often be the cause for triggering self-specific lymphocytes and autoimmunity. Activation may result in enhanced expression of costimulatory molecules or cytokines such as IL-12 or IFNα. This view is compatible with the observation that administration of LPS together with thyroid extracts is able to overcome tolerance and trigger autoimmune thyroiditis (Weigle, W. O.,Adv. Immunol. 30:159 (1980)). Moreover, in a transgenic mouse model, it was recently shown that administration of self-peptide alone failed to cause auto-immunity unless APCs were activated by a separate pathway (Garza, K. M., et al., J. Exp. Med. 191:2021 (2000)). The link between innate immunity and autoimmune disease is further underscored by the observation that LPS, viral infections or generalized activation of APCs delays or prevents the establishment of peripheral tolerance (Vella, A. T., et al., Immunity 2:261 (1995); Ehl, S., et al., J. Exp. Med. 187:763 (1998); Maxwell, J. R., et al., J. Immunol. 162:2024 (1999)). In this way, innate immunity not only enhances the activation of self-specific lymphocytes but also inhibits their subsequent elimination. These findings may extend to tumor biology and the control of chronic viral diseases.
- Induction of cytotoxic T lymphocyte (CTL) responses after immunization with minor histocompatibility antigens, such as the HY-antigen, requires the presence of T helper cells (Th cells) (Husmann, L. A., and M. J. Bevan,Ann. NY Acad. Sci. 532:158 (1988); Guerder, S., and P. Matzinger, J. Exp. Med. 176:553 (1992)). CTL-responses induced by cross-priming, i.e. by priming with exogenous antigens that reached the class I pathway, have also been shown to require the presence of Th cells (Bennett, S. R. M., et al., J. Exp. Med. 186:65 (1997)). These observations have important consequences for tumor therapy where T help may be critical for the induction of protective CTL responses by tumor cells (Ossendorp, F., et al., J. Exp. Med. 187:693 (1998)).
- An important effector molecule on activated Th cells is the CD40-ligand (CD40L) interacting with CD40 on B cells, macrophages and dendritic cells (DCs) (Foy, T. M., et al.,Annu. Rev. Immunol. 14:591 (1996)). Triggering of CD40 on B cells is essential for isotype switching and the generation of B cell memory (Foy, T. M., et al., Ann. Rev. Immunol. 14:591 (1996)). More recently, it was shown that stimulation of CD40 on macrophages and DCs leads to their activation and maturation (Cella, M., et al., Curr. Opin. Immunol. 9:10 (1997); Banchereau, J., and R. M. Steinman Nature 392:245 (1998)). Specifically, DCs upregulate costimulatory molecules and produce cytokines such as IL-12 upon activation. Interestingly, this CD40L-mediated maturation of DCs seems to be responsible for the helper effect on CTL responses. In fact, it has recently been shown that CD40-triggering by Th cells renders DCs able to initiate a CTL-response (Ridge, J. P., et al., Nature 393:474 (1998); Bennett, S. R. M., et al., Nature 393:478 (1998); Schoenenberger, S. P., et al., Nature 393:480 (1998)). This is consistent with the earlier observation that Th cells have to recognize their ligands on the same APC as the CTLs, indicating that a cognate interaction is required (Bennett, S. R. M., et al., J. Exp. Med. 186:65 (1997)). Thus CD40L-mediated stimulation by Th cells leads to the activation of DCs, which subsequently are able to prime CTL-responses. In the human, type I interferons, in particular interferon α and β may be equally important as IL-12.
- In contrast to these Th-dependent CTL responses, viruses are often able to induce protective CTL-responses in the absence of T help (for review, see (Bachmann, M. F., et al.,J. Immunol. 161:5791 (1998)). Specifically, lymphocytic choriomeningitis virus (LCMV) (Leist, T. P., et al., J. Immunol. 138:2278 (1987); Ahmed, R., et al., J. Virol. 62:2102 (1988); Battegay, M., et al., Cell Immunol. 167:115 (1996); Borrow, P., et al., J. Exp. Med. 183:2129 (1996); Whitmire, J. K., et al, J. Virol. 70:8375 (1996)), vesicular stomatitis virus (VSV) (Kündig, T. M., et al., Immunity 5:41 (1996)), influenza virus (Tripp, R. A., et al., J. Immunol. 155:2955 (1995)), vaccinia virus (Leist, T. P., et al., Scand. J. Immunol. 30:679 (1989)) and ectromelia virus (Buller, R., et al., Nature 328:77 (1987)) were able to prime CTL-responses in mice depleted of CD4+ T cells or deficient for the expression of
class 11 or CD40. The mechanism for this Th cell independent CTL-priming by viruses is presently not understood. Moreover, most viruses do not stimulate completely Th cell independent CTL-responses, but virus-specific CTL-activity is reduced in Th-cell deficient mice. Thus, Th cells may enhance anti-viral CTL-responses but the mechanism of this help is not fully understood yet. DCs have recently been shown to present influenza derived antigens by cross-priming (Albert, M. L., et al., J. Exp. Med. 188:1359 (1998); Albert, M. L., et al., Nature 392:86 (1998)). It is therefore possible that, similarly as shown for minor histocompatibility antigens and tumor antigens (Ridge, J. P., et al., Nature 393:474 (1998); Bennett, S. R. M., et al., Nature 393:478 (1998); Schoenenberger, S. P., et al., Nature 393:480 (1998)), Th cells may assist induction of CTLs via CD40 triggering on DCs. Thus, stimulation of CD40 using CD40L or anti-CD40 antibodies may enhance CTL induction after stimulation with viruses or tumor cells. - However, although CD40L is an important activator of DCs, there seem to be additional molecules that can stimulate maturation and activation of DCs during immune responses. In fact, CD40 is not measurably involved in the induction of CTLs specific for LCMV or VSV (Ruedl, C., et al.,J. Exp. Med. 189:1875 (1999)). Thus, although VSV-specific CTL responses are partly dependent upon the presence of CD4+T cells (Kündig, T. M., et al., Immunity 5:41 (1996)), this helper effect is not mediated by CD40L. Candidates for effector molecules triggering maturation of DCs during immune responses include Trance and TNFA (Bachmann, M. F., et al., J. Exp. Med. 189:1025 (1999); Sallusto, F., and A. Lanzavecchia, J Exp Med 179:1109 (1994)).
- It is well established that the administration of purified proteins alone is usually not sufficient to elicit a strong immune response; isolated antigen generally must be given together with helper substances called adjuvants.
- Within these adjuvants, the administered antigen is protected against rapid degradation, and the adjuvant provides an extended release of a low level of antigen.
- Unlike isolated proteins, viruses induce prompt and efficient immune responses in the absence of any adjuvants both with and without T-cell help (Bachmann & Zinkernagel,Ann. Rev. Immunol. 15:235-270 (1997)).
- Although viruses often consist of few proteins, they are able to trigger much stronger immune responses than their isolated components. For B cell responses, it is known that one crucial factor for the immunogenicity of viruses is the repetitiveness and order of surface epitopes. Many viruses exhibit a quasi-crystalline surface that displays a regular array of epitopes which efficiently crosslinks epitope-specific immunoglobulins on B cells (Bachmann & Zinkernagel,Immunol. Today 17:553-558 (1996)). This crosslinking of surface immunoglobulins on B cells is a strong activation signal that directly induces cell-cycle progression and the production of IgM antibodies. Further, such triggered B cells are able to activate T helper cells, which in turn induce a switch from IgM to IgG antibody production in B cells and the generation of long-lived B cell memory—the goal of any vaccination (Bachmann & Zinkernagel, Ann. Rev. Immunol. 15:235-270 (1997)). Viral structure is even linked to the generation of anti-antibodies in autoimmune disease and as a part of the natural response to pathogens (see Fehr, T., et al., J. Exp. Med. 185:1785-1792 (1997)). Thus, antigens on viral particles that are organized in an ordered and repetitive array are highly immunogenic since they can directly activate B cells.
- In addition to strong B cell responses, viral particles are also able to induce the generation of a cytotoxic T cell response, another crucial arm of the immune system. These cytotoxic T cells are particularly important for the elimination of non-cytopathic viruses such as HIV or Hepatitis B virus and for the eradication of tumors. Cytotoxic T cells do not recognize native antigens but rather recognize their degradation products in association with MHC class I molecules (Townsend & Bodmer,Ann. Rev. Immunol. 7:601-624 (1989)). Macrophages and dendritic cells are able to take up and process exogenous viral particles (but not their soluble, isolated components) and present the generated degradation product to cytotoxic T cells, leading to their activation and proliferation (Kovacsovics-Bankowski et al., Proc. Natl. Acad. Sci. USA 90:4942-4946 (1993); Bachmann et al., Eur. J. Immunol. 26:2595-2600 (1996)).
- Viral particles as antigens exhibit two advantages over their isolated components: (1) due to their highly repetitive surface structure, they are able to directly activate B cells, leading to high antibody titers and long-lasting B cell memory; and (2) viral particles, but not soluble proteins, have the potential to induce a cytotoxic T cell response, even if the viruses are non-infectious and adjuvants are absent.
- Several new vaccine strategies exploit the inherent immunogenicity of viruses. Some of these approaches focus on the particulate nature of the virus particle; for example see Harding, C.V. and Song, R., (J. Immunology 153:4925 (1994)), which discloses a vaccine consisting of latex beads and antigen; Kovacsovics-Bankowski, M., et al. (Proc. Natl. Acad. Sci. USA 90:4942-4946 (1993)), which discloses a vaccine consisting of iron oxide beads and antigen; U.S. Pat. No. 5,334,394 to Kossovsky, N., et al., which discloses core particles coated with antigen; U.S. Pat. No. 5,871,747, which discloses synthetic polymer particles carrying on the surface one or more proteins covalently bonded thereto; and a core particle with a non-covalently bound coating, which at least partially covers the surface of said core particle, and at least one biologically active agent in contact with said coated core particle (see, e.g., WO 94/15585).
- In a further development, virus-like particles (VLPs) are being exploited in the area of vaccine production because of both their structural properties and their non-infectious nature. VLPs are supermolecular structures built in a symmetric manner from many protein molecules of one or more types. They lack the viral genome and, therefore, are noninfectious. VLPs can often be produced in large quantities by heterologous expression and can be easily be purified.
- In addition, DNA rich in non-methylated CG motifs (CpG), as present in bacteria and most non-vertebrates, exhibits a potent stimulatory activity on B cells, dendritic cells and other APC's in vitro as well as in vivo. Although bacterial DNA is immunostimulatory across many vertebrate species, the individual CpG motifs may differ. In fact, CpG motifs that stimulate mouse immune cells may not necessarily stimulate human immune cells and vice versa.
- Although DNA oligomers rich in CpG motifs can exhibit immunostimulatory capacity, their efficiency is often limited, since they are unstable in vitro and in vivo. Thus, they exhibit unfavorable pharmacokinetics. In order to render CpG-oligonucleotides more potent, it is therefore usually necessary to stabilize them by introducing phosphorothioate modifications of the phosphate backbone.
- A second limitation for the use of CpG-oligonucleotides to stimulate immune responses is their lack of specificity, since all APC's and B cells in contact with CpG-oligonucleotides become stimulated. Thus, the efficiency and specificity of CpG-oligonucleotides may be improved by stabilizing them or packaging them in a way that restricts cellular activation to those cells that also present the relevant antigen.
- In addition, immunostimulatory CpG-oligodeoxynucleotides induce strong side effects by causing extramedullary hemopoiesis accompanied by splenomegaly and lymphadenopathy in mice (Sparwasser et al., J. Immunol. (1999), 162:2368-74 and Example 18).
- VLPs have been shown to be efficiently presented on MHC class I molecules as they, presumably after uptake by macropinocytosis, are efficiently processed and crossprimed onto MHC class I. The mechanism of crosspriming is not clear to date, but TAP-dependent and TAP-independent pathways have been proposed.
- There have been remarkable advances made in vaccination strategies recently, yet there remains a need for improvement on existing strategies. In particular, there remains a need in the art for the development of new and improved vaccines that promote a strong CTL immune response and anti-pathogenic protection as efficiently as natural pathogens in the absence of generalized activation of APCs and other cells.
- This invention is based on the surprising finding that immunostimulatory substances such as DNA oligonucleotides can be packaged into VLPs which renders them more immunogenic. Unexpectedly, the nucleic acids and oligonucleotides, respectively, present in VLPs can be replaced specifically by the immunostimulatory substances and DNA-oligonucleotides containing CpG motifs, respectively. Surprisingly, these packaged immunostimulatory substances, in particular immunostimulatory nucleic acids such as unmethylated CpG-containing oligonucleotides retained their immunostimulatory capacity without widespread activation of the innate immune system. The compositions comprising VLP's and the immunostimulatory substances in accordance with the present invention, and in particular the CpG-VLPs are dramatically more immunogenic than their CpG-free counterparts and induce enhanced B and T cell responses. The immune response against antigens optionally coupled, fused or attached otherwise to the VLPs is similarly enhanced as the immune response against the VLP itself. In addition, the T cell responses against both the VLPs and antigens are especially directed to the Th1 type. Antigens attached to CpG-loaded VLPs may therefore be ideal vaccines for prophylactic or therapeutic vaccination against allergies, tumors and other self-molecules and chronic viral diseases.
- In a first embodiment, the invention provides a composition for enhancing an immune response in an animal comprising a virus-like particle and an immunostimulatory substance, preferably an immunostimulatory nucleic acid, an even more preferably an unmethylated CpG-containing oligonucleotide, where the substance, nucleic acid or oligonucleotide is coupled, fused, or otherwise attached to or enclosed by, i.e., bound, to the virus-like particle. In another embodiment, the composition further comprises an antigen bound to the virus-like particle.
- In a preferred embodiment of the invention, the immunostimulatory nucleic acids, in particular the unmethylated CpG-containing oligonucleotides are stabilized by phosphorothioate modifications of the phosphate backbone. In another preferred embodiment, the immunostimulatory nucleic acids, in particular the unmethylated CpG-containing oligonucleotides are packaged into the VLPs by digestion of RNA within the VLPs and simultaneous addition of the DNA oligonucleotides containing CpGs of choice. In an equally preferred embodiment, the VLPs can be disassembled before they are reassembled in the presence of CpGs.
- In a further preferred embodiment, the immunostimulatory nucleic acids do not contain CpG motifs but nevertheless exhibit immunostimulatory activities. Such nucleic acids are described in WO 01/22972. All sequences described therein are hereby incorporated by way of reference.
- In a further preferred embodiment, the virus-like particle is a recombinant virus-like particle. Also preferred, the virus-like particle is free of a lipoprotein envelope. Preferably, the recombinant virus-like particle comprises, or alternatively consists of, recombinant proteins of Hepatitis B virus, BK virus or other human Polyoma virus, measles virus, Sindbis virus, Rotavirus, Foot-and-Mouth-Disease virus, Retrovirus, Norwalk virus or human Papilloma virus, RNA-phages, Qβ-phage, GA-phage, fr-phage and Ty. In a specific embodiment, the virus-like particle comprises, or alternatively consists of, one or more different Hepatitis B virus core (capsid) proteins (HBcAgs).
- In a further preferred embodiment, the virus-like particle comprises recombinant proteins, or fragments thereof, of a RNA-phage. Preferred RNA-phages are Qβ-phage, AP 205-phage, GA-phage, fr-phage
- In another embodiment, the antigen is a recombinant antigen. In yet another embodiment, the antigen can be selected from the group consisting of:
- (1) a polypeptide suited to induce an immune response against cancer cells; (2) a polypeptide suited to induce an immune response against infectious diseases;
- (3) a polypeptide suited to induce an immune response against allergens; (4) a polypeptide suited to induce an improved response against self-antigens; and
- (5) a polypeptide suited to induce an immune response in farm animals or pets.
- In yet another embodiment, the antigen can be selected from the group consisting of: (1) an organic molecule suited to induce an immune response against cancer cells; (2) an organic molecule suited to induce an immune response against infectious diseases; (3) an organic molecule suited to induce an immune response against allergens; (4) an organic molecule suited to induce an improved response against self-antigens; (5) an organic molecule suited to induce an immune response in farm animals or pets; and (6) an organic molecule suited to induce a response against a drug, a hormone or a toxic compound.
- In a particular embodiment, the antigen comprises, or alternatively consists of, a cytotoxic T cell epitope. In a related embodiment, the virus-like particle comprises the Hepatitis B virus core protein and the cytotoxic T cell epitope is fused to the C-terminus of said Hepatitis B virus core protein. In one embodiment, they are fused by a leucine linking sequence.
- In another aspect of the invention, there is provided a method of enhancing an immune response in a human or other animal species comprising introducing into the animal a composition comprising a virus-like particle and immunostimulatory substance, preferably an immunostimulatory nucleic acid, an even more preferably an unmethylated CpG-containing oligonucleotide where the substance, preferably the nucleic acid, and even more preferally the oligonucleotide is bound (i.e. coupled, attached or enclosed) to the virus-like particle. In a further embodiment, the composition further comprises an antigen bound to the virus-like particle.
- In yet another embodiment of the invention, the composition is introduced into an animal subcutaneously, intramuscularly, intranasally, intradermally, intravenously or directly into a lymph node. In an equally preferred embodiment, the immune enhancing composition is applied locally, near a tumor or local viral reservoir against which one would like to vaccinate.
- In a preferred aspect of the invention, the immune response is a T cell response, and the T cell response against the antigen is enhanced. In a specific embodiment, the T cell response is a cytotoxic T cell response, and the cytotoxic T cell response against the antigen is enhanced.
- The present invention also relates to a vaccine comprising an immunologically effective amount of the immune enhancing composition of the present invention together with a pharmaceutically acceptable diluent, carrier or excipient. In a preferred embodiment, the vaccine further comprises at least one adjuvant, such as incomplete Freund's adjuvant. The invention also provides a method of immunizing and/or treating an animal comprising administering to the animal an immunologically effective amount of the disclosed vaccine.
- In a preferred embodiment of the invention, the immunostimulatory substance-containing VLPs, preferably the immunostimulatory nucleic acid-containing VLP's, an even more preferably the unmethylated CpG-containing oligonucleotide VLPs are used for vaccination of animals or humans against the VLP itself or against antigens coupled, fused or attached otherwise to the VLP. The modified VLPs can be used to vaccinate against tumors, viral diseases, self-molecules and self antigens, respectively, or non-peptidic small molecules, for example. The vaccination can be for prophylactic or therapeutic purposes, or both. Also, the modified VLPs can be used to vaccinate against allergies in order to induce immune-deviation.
- In the majority of cases, the desired immune response will be directed against antigens coupled, fised or attached otherwise to the immunostimulatory substance-containing VLPs, preferably the immunostimulatory nucleic acid-containing VLP's, an even more preferably the unmethylated CpG-containing oligonucleotide VLPs. The antigens can be peptides, proteins, domains, carbohydrates or small molecules such as, for example, steroid hormones or drugs, such as nicotine. Under some conditions, the desired immune response can be directed against the VLP itself. This latter application will be used in cases where the VLP originates from a virus against which one would like to vaccinate.
- The route of injection is preferably subcutaneous or intramuscular, but it would also be possible to apply the CpG-containing VLPs intradermally, intranasally, intravenously or directly into the lymph node. In an equally preferred embodiment, the CpG-containing antigen-coupled or free VLPs are applied locally, near a tumor or local viral reservoir against which one would like to vaccinate.
- It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are intended to provide further explanation of the invention as claimed.
- FIG. 1 shows the DNA sequence of the CpG-oligonucleotide (A) and the DNA sequence of the peptide p33-containing VLP derived from hepatitis B core (B). The nonameric p33 epitope is genetically fused to the C-terminus of the hepatitis B core protein at position 185 via a three leucine linking sequence.
- FIG. 2 shows the structure of the p33-VLPs as assessed by electron microscopy (A) and SDS PAGE (B). Recombinantly produced wild-type VLPs (composed of HBcAg [aa 1-185] monomers) and p33-VLPs were loaded onto a Sephacryl S-400 gel filtration column (Amersham Pharmacia Biotechnology AG) for purification. Pooled fractions were loaded onto a Hydroxyapatite column. Flow through (which contains purified HBc capsids) was collected and loaded onto a reducing SDS-PAGE gel for monomer molecular weight analysis (B).
- FIG. 3 shows p33-VLPs in a native agarose gel electrophoresis (1% agarose) after control incubation or after digestion with RNase A upon staining with ethidium bromide (A) or Coomassie blue (B) in order to assess for the presence of RNA or protein. Recombinantly produced p33-VLPs were diluted at a final concentration of 0.5 ug/ul protein in PBS buffer and incubated in the absence (lane 1) or presence (lane 2) of RNase A (100 ug/ml) (Sigma, Division of Fluka AG, Switzerland) for 2 h at 37° C. The samples were subsequently complemented with 6-fold concentrated DNA-loading buffer (MBS Fermentas GmbH, Heidelberg, Germany) and run for 30 min at 100 volts in a 1% native agarose gel. The Gene Ruler marker (MBS Fermentas GmbH, Heidelberg, Germany) was used as reference for p33-VLPs migration velocity (lane M). Arrows are indicating the presence of RNA packaged in p33-VLPs (A) or p33-VLP capsids themselves (B). Identical results were obtained in 3 independent experiments.
- FIG. 4 shows p33-VLPs in a native agarose gel electrophoresis (1% agarose) after control incubation or after digestion with RNase A in the presence of buffer only or CpG-containing DNA-oligomers upon staining with ethidium bromide (A) or Coomassie blue (B) in order to assess for the presence of RNA/DNA or protein. Recombinant p33-VLPs were diluted at a final concentration of 0.5 ug/ul protein in PBS buffer and incubated in the absence (lane 1) or presence (
lane 2 and 3) of RNase A (100 ug/ml) (Sigma, Division of Fluka AG, Switzerland) for 2 h at 37° C. 5 nmol CpG-oligonucleotides (containing phosphorothioate modification of the backbone) were added tosample 3 before RNase A digestion. The Gene Ruler marker (MBS Fermentas GmbH, Heidelberg, Germany) was used as reference for p33-VLPs migration velocity (lane M). Arrows are indicating the presence of RNA or CpG-oligonucleotides in p33-VLPs (A) or p33-VLPs capsids themselves (B). Identical results were obtained when CpG oligonucleotides with phosphodiester bonds were used for co-incubation of VLPs with RNase A. - FIG. 5 shows p33-VLPs in a native agarose gel electrophoresis (1% agarose) before and after digestion with RNase A in the presence of CpG-containing DNA-oligomers and subsequent dialysis (for the elimination of VLP-unbound CpG DNA) upon staining with ethidium bromide (A) or Coomassie blue (B) in order to assess for the presence of DNA or protein. Recombinant p33-VLPs were diluted at a final concentration of 0.5 ug/ul protein in PBS buffer and incubated in absence (lane 1) or in presence (
lanes 2 to 5) of RNase A (100 ug/ml) (Sigma, Division of Fluka AG, Switzerland) for 2 h at 37° C. 50 nmol CpG-oligonucleotides (containing phosphorothioate modification of the phosphate backbone:lanes lanes 4 and 5) were added to VLPs before RNase A digestion. Treated samples were extensively dialysed for 24 hours against PBS (4500-fold dilution) with a 300 kDa MWCO dialysis membrane (Spectrum Medical Industries Inc., Houston, USA) to eliminate the in excess DNA (lanes 3 and 5). The Gene Ruler marker (MBS Fermentas GmbH, Heidelberg, Germany) was used as reference for p33-VLPs migration velocity (lane M). Arrows are indicating the presence of RNA or CpG-oligonucleotides in p33-VLPs (A) or p33-VLP capsids themselves (B). - FIG. 6 shows p33-VLPs in a native agarose gel electrophoresis (1% agarose) after control incubation or after digestion with RNase A where CpG-containing oligonucleotides were added only after completing the RNA digestion upon staining with ethidium bromide (A) or Coomassie blue (B) in order to assess for the presence of RNA/DNA or protein. Recombinant p33-VLPs were diluted at a final concentration of 0.5 ug/ul protein in PBS buffer and incubated in the absence (lane 1) or presence (
lane 2 and 3) of RNase A (100 ug/ml) (Sigma, Division of Fluka AG, Switzerland) for 2 h at 37° C. 5 nmol CpG-oligonucleotides (containing phosphorothioate modification of the phosphate backbone) were added tosample 3 only after the RNase A digestion. The Gene Ruler marker (MBS Fermentas GmbH, Heidelberg, Germany) was used as reference for p33-VLPs migration velocity (lane M). Arrows are indicating the presence of RNA or CpG-oligonucleotides in p33-VLPs (A) or p33-VLP capsids themselves (B). Identical results were obtained when CpG oligonucleotides with phosphodiester bonds were used for reassembly of VLPs. - FIG. 7 shows that p33-VLPs packaged with CpG-oligonucleotides (containing phosphorothioate modification of the phosphate backbone), are effective at inducing viral protection. Mice were subcutaneously primed with 100 μg p33-VLP alone, mixed with 20 nmol CpG-oligonucleotide (p33-VLP+CpG) or p33-VLP packaged with CpG-oligonucleotide after dialysis of free CpG-oligonucleotide (p33-VLP/CpG). Untreated naive mice served as negative control. Twenty-one days later, mice were challenged with LCMV (200 pfu, intravenously) and viral titers were assessed in the
spleens 5 days later as described in Bachmann, M. F., “Evaluation of lymphocytic choriomeningitis virus-specific cytotoxic T cell responses,” in Immunology Methods Manual, Lefkowitz, I., ed., Academic Press Ltd., New York, N.Y. (1997) p. 1921. - FIG. 8 shows that p33-VLPs packaged with CpG-oligonucleotide (containing phosphodiester bonds) are effective at inducing viral protection. Mice were subcutaneously primed with 100 μg p33-VLP alone, mixed with 20 nmol CpG-oligonucleotides (p33-VLP+CpG) or p33-VLPs packaged with CpG-oligonucleotides after dialysis of free CpG-oligonucleotides) (p33-VLP/CpG). Untreated naive mice served as negative control. Twenty-one days later, mice were challenged with LCMV (200 pfu, intravenously) and viral titers were assessed in the
spleens 5 days later as described in Bachmann, M. F., “Evaluation of lymphocytic choriomeningitis virus-specific cytotoxic T cell responses,” in Immunology Methods Manual, Lefkowitz, I., ed., Academic Press Ltd., New York, N.Y. (1997) p. 1921. - FIG. 9 shows that mice treated with CpG-oligonucleotides alone are not protected from viral infection. Mice were subcutaneously primed with 20 nmol CpG-oligonucleotides (CpG), or left untreated as negative control (naive). Twenty-one days later, mice were challenged with LCMV (200 pfu, intravenously) and viral titers were assessed in the
spleens 5 days later as described in Bachmarm, M. F., “Evaluation of lymphocytic choriomeningitis virus-specific cytotoxic T cell responses,” in Immunology Methods Manual, Lefkowitz, I., ed., Academic Press Ltd., New York, N.Y. (1997) p. 1921. - FIG. 10 shows the amino acid sequence of the BKV (AS) VP1 protein (GI:332779). This sequence was expressed in yeast to produce BKV capsids (Sasnauskas K. et al.,J. Biol Chem 380(3):381 (1999); K. et al., Generation of recombinant virus-like particles of different polyomaviruses in yeast. 3rd International Workshop “Virus-like particles as vaccines” Berlin, (2001)).
- FIG. 11 shows the DNA sequence of the 246 bp double stranded DNA fragment used for packaging and stabilization of BKV VLPs.
- FIG. 12 shows BKV VLPs (15 μg) in a native 0.8% agarose gel electrophoresis after control incubation or after digestion with RNase A and subsequent incubation with fluorescent phosphorothioate (pt) CpG-oligonucleotides. UV excitation leads to detection of DNA in an ethidium bromide stained gel (A) and to fluorescence of CpG-FAM oligomers in the absence of ethidium bromide (B). Lane 1: BKV VLPs untreated; lane 2: BKV VLPs RNase A treated; lane 3: BKV VLPs RNase A treated with CpG(pt)-FAM; lane 4: BKV VLPs RNase A treated with CpG(pt)-FAM plus DNaseI treatment; lane M:
Gene Ruler 1 kb DNA ladder (MBI Fermentas GmbH, Heidelberg, Germany). Arrows are indicating the presence of RNA or CpG-FAM oligomers in BKV VLPs. - FIG. 13 shows BKV VLPs (15 μg) in a native 0.8% agarose gel electrophoresis after control incubation or after digestion with RNase A and subsequent incubation with double stranded (ds) DNA (246 bp) upon staining with ethidium bromide (A) or Coomassie Blue (B). Lane 1: BKV VLPs untreated; lane 2: BKV VLPs RNase A treated; lane 3: BKV VLPs treated with RNase A and incubated with ds DNA; lane M:
Gene Ruler 1 kb DNA ladder (MBI Fermentas GmbH, Heidelberg, Germany). Arrows indicate the presence of RNA or ds DNA in BKV VLPs. - FIG. 14 shows BKV VLPs (15 μg) in a native 0.8% agarose gel electrophoresis after control incubation or after digestion with RNase A and subsequent incubation with CpG-oligonucleotides (with phosphate—or with phosphorothioate (pt) backbone) upon staining with ethidium bromide (A) or Coomassie Blue (B). Lane 1: BKV VLPs stock (PBS/50% glycerol); lane 2: BKV VLPs untreated (PBS buffer); lane 3: BKV VLPs RNase A treated; lane 4: BKV VLPs RNase A treated post-dialysis; lane 5: BKV VLPs RNase A treated with CpG-oligonucleotides; lane 6: BKV VLPs RNase A treated with CpG(pt)-oligomers; lane 7: BKV VLPs RNase A treated with CpG(pt)-oligomers post-dialysis; lane M:
Gene Ruler 1 kb DNA ladder (MBI Fermentas GmbH, Heidelberg, Germany). Arrows indicate the presence of RNA or CpG-oligonucleotides in BKV VLPs. - FIG. 15 shows mouse IgG1 and IgG2a OD50% antibody titers to BKV VLPs on
day 14 after immunization with BKV VLPs and phosphorothioate (pt) CpG-oligonucleotides. Lane 1: RNase treated BKV VLPs; lane 2: RNase treated BKV VLPs in combination with 0.3 nmol CpG(pt)-oligomer; lane 3: RNase treated BKV VLPs in combination with 20 nmol CpG(pt)-oligomer; lane 4: RNase treated BKV VLPs containing 0.3 nmol CpG(pt)-oligomer. - FIG. 16 shows p33-VLPs in a native agarose gel electrophoresis (1% agarose) after control incubation or after digestion with RNase A where linear double-stranded DNA (350 base pairs long) was added only after completing the RNA digestion upon staining with ethidium bromide (A) or Coomassie blue (B) in order to assess for the presence of RNA/DNA or protein. Recombinant p33-VLPs were diluted at a final concentration of 0.5 ug/ul protein in PBS buffer and incubated in the absence (lane 1) or presence (
lanes sample C. Sample 4 was further digested with DNase 1 (50 IU/ml)(Sigma, Division of Fluka AG, Switzerland) for additional 3 hours at 37° C. The Gene Ruler marker (MBS Fermentas GmbH, Heidelberg, Germany) was used as reference for p33-VLPs migration velocity (lane M). Arrows are indicating the presence of RNA/dsDNA free or enclosed in p33-VLPs (A) and p33-VLPs (B). - FIG. 17 shows packaging of B-CpG into HBc33 VLPs.
- FIG. 18 shows packaging of NKCpG into HBc33 VLPs.
- FIG. 19 shows packaging of g10gacga-PO into HBc33 VLPs.
- FIG. 20 shows packaging of CyCpG-150 into HBc33 VLPs.
- FIG. 21 shows packaging of NKCpGpt into HBcP1A VLPs.
- FIG. 22 shows coupling of p33 to HBcAg VLPs.
- FIG. 23 shows packaging of B-CpGpt into HBx33 VLPs.
- FIG. 24 shows coupling of p33 to Qβ VLPs.
- FIG. 25 shows ionic strength and low protein concentration allow RNA hydrolysis by RNase A in Qβ VLPs.
- FIG. 26 shows ionic strength increases immunostimulatory nucleic acid packaging into Qβ VLPs.
- FIG. 27 shows packaging of B-CpGpt, g10gacga-PO and dsCyCpG into Qbx33 VLPs.
- FIG. 28 shows SDS-PAGE analysis of the fractions from the sucrose gradient centrifugation after Qβ VLP disassembly and reassembly in the presence of immunostimulatory nucleic acids.
- FIG. 29 shows electron micrographs of Qβ VLP after disassembly and reassembly in the presence of oligonucleotide (CpG)20OpA.
- FIG. 30 shows ouchterlony analysis (immunodiffusion) of the diassembled and reassembled Qβ VLP.
- FIG. 31 shows gelelectrophoretic analysis of dissassembled and reassembled Qβ VLP.
- FIG. 32 shows electron micrographs of the dissassembled and reassembled Qβ VLP with the oligonucleotide CyOpA.
- FIG. 33 shows electron micrographs of the purified dissassembled and reassembled Qβ VLP with the different immunostimulatory nucleic acids.
- FIG. 34 shows SDS-PAGE analysis of the coupling of Qβ VLP reassembled with the oligodeoxynucleotide CyOpA to the p33GGC peptide.
- FIG. 35 shows packaged oligodeoxynucleotides after disassembly and reassembly of Qβ VLPs and subsequent coupling to p33 GGC peptide.
- FIG. 36 shows purification of disassembled Qβ coat protein by size exclusion chromatography.
- FIG. 37 shows purification of reassembled Qβ VLPs by size exclusion chromatography.
- FIG. 38 shows electron micrographs of Qβ VLPs that were reassembled in the presence of different oligodeoxynucleotides.
- FIG. 39 shows analysis of the disulfide-bond pattern in reassembled and purified Qβ capsids.
- FIG. 40 shows analysis of nucleic acid content of the reassembled Qβ VLPs by nuclease treatment and agarose gelelectrophoresis.
- FIG. 41 shows analysis of nucleic acid content of the reassembled Qβ VLPs by proteinase K treatment and polyacrylamide TBE/Urea gelelectrophoresis.
- FIG. 42 shows electron micrographs AP205 VLP disassembled and subsequently reassembled in the presence of CyCpG.
- FIG. 43 shows agarose gel-electrophoresis analysis of AP205 VLPs diassembled and reassembled in the presence of CyCpG.
- FIG. 44 shows electron micrograph of disassembled and reassembled AP205.
- FIG. 45 shows Agarose gel-electrophoresis analysis of AP205 VLPs diassembled and reassembled in the presence of CyCpG.
- FIG. 46 shows SDS-PAGE analysis, of disassembled and reassembled AP205 VLPs.
- FIG. 47 shows SDS-PAGE analysis of the peptide coupling to disassembled and reassembled AP205 VLPs.
- FIG. 48 shows free immunostimulatory nucleic acids but not immunostimulatory nucleic acids packaged in VLPs induce splenomegaly.
- FIG. 49 shows different immunostimulatory nucleic acids packaged in VLP fused to antigen result in a potent antigen-specific CTL response and virus protection.
- FIG. 50 shows the immunostimulatory nucleic acid g10gacga-PS packaged in VLP fused to antigen result in a potent antigen-specific CTL response and virus protection.
- FIG. 51 shows immunostimulatory nucleic acids packaged in HBcAg and Qβ VLPs result in a potent antigen-specific CTL response and virus protection.
- FIG. 52 shows immunostimulatory nucleic acids packaged in VLPs are even more efficient in inducing CTL responses than VLPs mixed with immunostimulatory nucleic acids.
- FIG. 53 shows analysis of non-enzymatic RNA hydrolysis of the RNA in Qβ VLPs.
- FIG. 54 shows packaging of oligodeoxynucleotides into Qβ VLPs after non-enzymatic RNA hydrolysis.
- FIG. 55 shows analysis of packaging of oligodeoxynucleotides into Qβ VLPs after non-enzymatic RNA hydrolysis.
- Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art to which this invention belongs. Although any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention, the preferred methods and materials are hereinafter described.
- 1. Definitions
- Amino acid linker: An “amino acid linker”, or also just termed “linker” within this specification, as used herein, either associates the antigen or antigenic determinant with the second attachment site, or more preferably, already comprises or contains the second attachment site, typically—but not necessarily—as one amino acid residue, preferably as a cysteine residue. The term “amino acid linker” as used herein, however, does not intend to imply that such an amino acid linker consists exclusively of amino acid residues, even if an amino acid linker consisting of amino acid residues is a preferred embodiment of the present invention. The amino acid residues of the amino acid linker are, preferably, composed of naturally occuring amino acids or unnatural amino acids known in the art, all-L or all-D or mixtures thereof. However, an amino acid linker comprising a molecule with a sulhydryl group or cysteine residue is also encompassed within the invention. Such a molecule comprise preferably a C1-C6 alkyl-, cycloalkyl (C5,C6), aryl or heteroaryl moiety. However, in addition to an amino acid linker, a linker comprising preferably a C1-C6 alkyl-, cycloalkyl- (C5,C6), aryl- or heteroaryl-moiety and devoid of any amino acid(s) shall also be encompassed within the scope of the invention. Association between the antigen or antigenic determinant or optionally the second attachment site and the amino acid linker is preferably by way of at least one covalent bond, more preferably by way of at least one peptide bond.
- Animal: As used herein, the term “animal” is meant to include, for example, humans, sheep, horses, cattle, pigs, dogs, cats, rats, mice, mammals, birds, reptiles, fish, insects and arachnids.
- Antibody: As used herein, the term “antibody” refers to molecules which are capable of binding an epitope or antigenic determinant. The term is meant to include whole antibodies and antigen-binding fragments thereof, including single-chain antibodies. Most preferably the antibodies are human antigen binding antibody fragments and include, but are not limited to, Fab, Fab′ and F(ab′)2, Fd, single-chain Fvs (scFv), single-chain antibodies, disulfide-linked Fvs (sdFv) and fragments comprising either a VL or VH domain. The antibodies can be from any animal origin including birds and mammals. Preferably, the antibodies are human, murine, rabbit, goat, guinea pig, camel, horse or chicken. As used herein, “human” antibodies include antibodies having the amino acid sequence of a human immunoglobulin and include antibodies isolated from human immunoglobulin libraries or from animals transgenic for one or more human immunoglobulins and that do not express endogenous immunoglobulins, as described, for example, in U.S. Pat. No. 5,939,598 by Kucherlapati et al.
- Antigen: As used herein, the term “antigen” refers to a molecule capable of being bound by an antibody or a T cell receptor (TCR) if presented by MHC molecules. The term “antigen”, as used herein, also encompasses T-cell epitopes. An antigen is additionally capable of being recognized by the immune system and/or being capable of inducing a humoral immune response and/or cellular immune response leading to the activation of B- and/or T-lymphocytes. This may, however, require that, at least in certain cases, the antigen contains or is linked to a Th cell epitope and is given in adjuvant. An antigen can have one or more epitopes (B- and T-epitopes). The specific reaction referred to above is meant to indicate that the antigen will preferably react, typically in a highly selective manner, with its corresponding antibody or TCR and not with the multitude of other antibodies or TCRs which may be evoked by other antigens.
- A “microbial antigen” as used herein is an antigen of a microorganism and includes, but is not limited to, infectious virus, infectious bacteria, parasites and infectious fungi. Such antigens include the intact microorganism as well as natural isolates and fragments or derivatives thereof and also synthetic or recombinant compounds which are identical to or similar to natural microorganism antigens and induce an immune response specific for that microorganism. A compound is similar to a natural microorganism antigen if it induces an immune response (humoral and/or cellular) to a natural microorganism antigen. Such antigens are used routinely in the art and are well known to the skilled artisan.
- Examples of infectious viruses that have been found in humans include but are not limited to: Retroviridae (e.g. human immunodeficiency viruses, such as HIV-1 (also referred to as HTLV-III, LAV or HTLV-III/LAV, or HIV-III); and other isolates, such as HIV-LP); Picomaviridae (e.g. polio viruses, hepatitis A virus; enteroviruses, human Coxsackie viruses, rhinoviruses, echoviruses); Calciviridae (e.g. strains that cause gastroenteritis); Togaviridae (e.g. equine encephalitis viruses, rubella viruses); Flaviridae (e.g. dengue viruses, encephalitis viruses, yellow fever viruses); Coronoviridae (e.g. coronaviruses); Rhabdoviradae (e.g. vesicular stomatitis viruses, rabies viruses); Filoviridae (e.g. ebola viruses); Paramyxoviridae (e.g. parainfluenza viruses, mumps virus, measles virus, respiratory syncytial virus); Orthomyxoviridae (e.g. influenza viruses); Bungaviridae (e.g. Hantaan viruses, bunga viruses, phleboviruses and Nairo viruses); Arena viridae (hemorrhagic fever viruses); Reoviridae (e.g. reoviruses, orbiviurses and rotaviruses); Birnaviridae; Hepadnaviridae (Hepatitis B virus); Parvovirida (parvoviruses); Papovaviridae (papilloma viruses, polyoma viruses); Adenoviridae (most adenoviruses); Herpesviridae (herpes simplex virus (HSV) 1 and 2, varicella zoster virus, cytomegalovirus (CMV), herpes virus); Poxviridae (variola viruses, vaccinia viruses, pox viruses); and Iridoviridae (e.g. African swine fever virus); and unclassified viruses (e.g. the etiological agents of Spongiform encephalopathies, the agent of delta hepatitis (thought to be a defective satellite of hepatitis B virus), the agents of non-A, non-B hepatitis (class 1=internally transmitted; class 2=parenterally transmitted (i.e. Hepatitis C); Norwalk and related viruses, and astroviruses).
- Both gram negative and gram positive bacteria serve as antigens in vertebrate animals. Such gram positive bacteria include, but are not limited to, Pasteurella species, Staphylococci species and Streptococcus species. Gram negative bacteria include, but are not limited to,Escherichia coli, Pseudomonas species, and Salmonella species. Specific examples of infectious bacteria include but are not limited to: Helicobacter pyloris, Borelia burgdorferi, Legionella pneumophilia, Mycobacteria sps. (e.g. M. tuberculosis, M. avium, M intracellulare, M. kansaii, M. gordonae), Staphylococcus aureus, Neisseria gonorrhoeae, Neisseria meningitidis, Listeria monocytogenes, Streptococcus pyogenes (Group A Streptococcus), Streptococcus agalactiae (Group B Streptococcus), Streptococcus (viridans group), Streptococcus faecalis, Streptococcus bovis, Streptococcus (anaerobic sps.), Streptococcus pneumoniae, pathogenic Campylobacter sp., Enterococcus sp., Haemophilus influenzae, Bacillus antracis, Corynebacterium diphtheriae, Corynebacterium sp., Erysipelothrix rhusiopathiae, Clostridium perfringers, Clostridium tetani, Enterobacter aerogenes, Klebsiella pneumoniae, Pasturella multocida, Bacteroides sp., Fusobacterium nucleatum, Streptobacillus moniliformis, Treponema pallidium, Treponema pertenue, Leptospira, Rickettsia, Actinomyces israelli and Chlamydia.
- Examples of infectious fungi include:Cryptococcus neoformans, Histoplasma capsulatum, Coccidioides immitis, Blastomyces dermatitidis, Chlamydia trachomatis and Candida albicans. Other infectious organisms (i.e., protists) include: Plasmodium such as Plasmodium falciparum, Plasmodium malariae, Plasmodium ovale, Plasmodium vivax, Toxoplasma gondii and Shistosoma.
- Other medically relevant microorganisms have been descried extensively in the literature, e.g., see C. G. A. Thomas, “Medical Microbiology”, Bailliere Tindall, Great Britain 1983, the entire contents of which is hereby incorporated by reference.
- The compositions and methods of the invention are also useful for treating cancer by stimulating an antigen-specific immune response against a cancer antigen. A “tumor antigen” as used herein is a compound, such as a peptide, associated with a tumor or cancer and which is capable of provoking an immune response. In particular, the compound is capable of provoking an immune response when presented in the context of an MHC molecule. Tumor antigens can be prepared from cancer cells either by preparing crude extracts of cancer cells, for example, as described in Cohen, et al.,Cancer Research, 54:1055 (1994), by partially purifying the antigens, by recombinant technology or by de novo synthesis of known antigens. Tumor antigens include antigens that are antigenic portions of or are a whole tumor or cancer polypeptide. Such antigens can be isolated or prepared recombinantly or by any other means known in the art. Cancers or tumors include, but are not limited to, biliary tract cancer; brain cancer; breast cancer; cervical cancer; choriocarcinoma; colon cancer; endometrial cancer; esophageal cancer; gastric cancer; intraepithelial neoplasms; lymphomas; liver cancer; lung cancer (e.g. small cell and non-small cell); melanoma; neuroblastomas; oral cancer; ovarian cancer; pancreas cancer; prostate cancer; rectal cancer; sarcomas; skin cancer; testicular cancer; thyroid cancer; and renal cancer, as well as other carcinomas and sarcomas.
- Antigenic determinant: As used herein, the term “antigenic determinant” is meant to refer to that portion of an antigen that is specifically recognized by either B- or T-lymphocytes. B-lymphocytes respond to foreign antigenic determinants via antibody production, whereas T-lymphocytes are the mediator of cellular immunity. Thus, antigenic determinants or epitopes are those parts of an antigen that are recognized by antibodies, or in the context of an MHC, by T-cell receptors.
- Antigen presenting cell: As used herein, the term “antigen presenting cell” is meant to refer to a heterogenous population of leucocytes or bone marrow derived cells which possess an immunostimulatory capacity. For example, these cells are capable of generating peptides bound to MHC molecules that can be recognized by T cells. The term is synonymous with the term “accessory cell” and includes, for example, Langerhans' cells, interdigitating cells, B cells, macrophages and dendritic cells. Under some conditions, epithetral cells, endothelial cells and other, non-bone marrow derived cells may also serve as antigen presenting cells.
- Association: As used herein, the term “association” as it applies to the first and second attachment sites, refers to the binding of the first and second attachment sites that is preferably by way of at least one non-peptide bond. The nature of the association may be covalent, ionic, hydrophobic, polar or any combination thereof, preferably the nature of the association is covalent.
- Attachment Site, First: As used herein, the phrase “first attachment site” refers to an element of non-natural or natural origin, to which the second attachment site located on the antigen or antigenic determinant may associate. The first attachment site may be a protein, a polypeptide, an amino acid, a peptide, a sugar, a polynucleotide, a natural or synthetic polymer, a secondary metabolite or compound (biotin, fluorescein, retinol, digoxigenin, metal ions, phenylmethylsulfonylfluoride), or a combination thereof, or a chemically reactive group thereof. The first attachment site is located, typically and preferably on the surface, of the virus-like particle. Multiple first attachment sites are present on the surface of virus-like particle typically in a repetitive configuration.
- Attachment Site, Second: As used herein, the phrase “second attachment site” refers to an element associated with the antigen or antigenic determinant to which the first attachment site located on the surface of the virus-like particle may associate. The second attachment site of the antigen or antigenic determinant may be a protein, a polypeptide, a peptide, a sugar, a polynucleotide, a natural or synthetic polymer, a secondary metabolite or compound (biotin, fluorescein, retinol, digoxigenin, metal ions, phenylmethylsulfonylfluoride), or a combination thereof, or a chemically reactive group thereof. At least one second attachment site is present on the antigen or antigenic determinant. The term “antigen or antigenic determinant with at least one second attachment site” refers, therefore, to an antigen or antigenic construct comprising at least the antigen or antigenic determinant and the second attachment site. However, in particular for a second attachment site, which is of non-natural origin, i.e. not naturally occurring within the antigen or antigenic determinant, these antigen or antigenic constructs comprise an “amino acid linker”.
- Bound: As used herein, the term “bound” refers to binding that may be covalent, e.g., by chemically coupling, or non-covalent, e.g., ionic interactions, hydrophobic interactions, hydrogen bonds, etc. Covalent bonds can be, for example, ester, ether, phosphoester, amide, peptide, imide, carbon-sulfur bonds, carbon-phosphorus bonds, and the like. The term also includes the enclosement, or partial enclosement, of a substance. The term “bound” is broader than and includes terms such as “coupled,” “fused,” “enclosed”, “packaged” and “attached.” For example, the immunostimulatory substance such as the unmethylated CpG-containing oligonucleotide can be enclosed by the VLP without the existence of an actual binding, neither covalently nor non-covalently.
- Coat protein(s): As used herein, the term “coat protein(s)” refers to the protein(s) of a bacteriophage or a RNA-phage capable of being incorporated within the capsid assembly of the bacteriophage or the RNA-phage. However, when referring to the specific gene product of the coat protein gene of RNA-phages the term “CP” is used. For example, the specific gene product of the coat protein gene of RNA-phage Qβ is referred to as “Qβ CP”, whereas the “coat proteins” of bacteriophage Qβ comprise the “Qβ CP” as well as the Al protein. The capsid of Bacteriophage Qβ is composed mainly of the Qβ CP, with a minor content of the A1 protein. Likewise, the VLP Qβ coat protein contains mainly Qβ CP, with a minor content of A1 protein.
- Coupled: As used herein, the term “coupled” refers to attachment by covalent bonds or by strong non-covalent interactions. Any method normally used by those skilled in the art for the coupling of biologically active materials can be used in the present invention.
- Fusion: As used herein, the term “fusion” refers to the combination of amino acid sequences of different origin in one polypeptide chain by in-frame combination of their coding nucleotide sequences. The term “fusion” explicitly encompasses internal fusions, i.e., insertion of sequences of different origin within a polypeptide chain, in addition to fusion to one of its termini.
- CpG: As used herein, the term “CpG” refers to an oligonucleotide which contains an unmethylated cytosine, guanine dinucleotide sequence (e.g.
- “CpG DNA” or DNA containing a cytosine followed by guanosine and linked by a phosphate bond) and stimulates/activates, e.g. has a mitogenic effect on, or induces or increases cytokine expression by, a vertebrate cell. For example, CpGs can be useful in activating B cells, NK cells and antigen-presenting cells, such as monocytes, dendritic cells and macrophages, and T cells. The CpGs can include nucleotide analogs such as analogs containing phosphorothioester bonds and can be double-stranded or single-stranded. Generally, double-stranded molecules are more stable in vivo, while single-stranded molecules have increased immune activity.
- Epitope: As used herein, the term “epitope” refers to portions of a polypeptide having antigenic or immunogenic activity in an animal, preferably a mammal, and most preferably in a human. An “immunogenic epitope,” as used herein, is defined as a portion of a polypeptide that elicits an antibody response or induces a T-cell response in an animal, as determined by any method known in the art. (See, for example, Geysen et al.,Proc. Natl. Acad. Sci. USA 81:3998-4002 (1983)). The term “antigenic epitope,” as used herein, is defined as a portion of a protein to which an antibody can immunospecifically bind its antigen as determined by any method well known in the art. Immunospecific binding excludes non-specific binding but does not necessarily exclude cross-reactivity with other antigens. Antigenic epitopes need not necessarily be immunogenic. Antigenic epitopes can also be T-cell epitopes, in which case they can be bound immunospecifically by a T-cell receptor within the context of an MHC molecule.
- An epitope can comprise 3 amino acids in a spatial conformation which is unique to the epitope. Generally, an epitope consists of at least about 5 such amino acids, and more usually, consists of at least about 8-10 such amino acids. If the epitope is an organic molecule, it may be as small as Nitrophenyl.
- Immune response: As used herein, the term “immune response” refers to a humoral immune response and/or cellular immune response leading to the activation or proliferation of B- and/or T-lymphocytes. In some instances, however, the immune responses may be of low intensity and become detectable only when using at least one substance in accordance with the invention. “Immunogenic” refers to an agent used to stimulate the immune system of a living organism, so that one or more functions of the immune system are increased and directed towards the immunogenic agent. An “immunogenic polypeptide” is a polypeptide that elicits a cellular and/or humoral immune response, whether alone or linked to a carrier in the presence or absence of an adjuvant.
- Immunization: As used herein, the terms “immunize” or “immunization” or related terms refer to conferring the ability to mount a substantial immune response (comprising antibodies or cellular immunity such as effector CTL) against a target antigen or epitope. These terms do not require that complete immunity be created, but rather that an immune response be produced which is substantially greater than baseline. For example, a mammal may be considered to be immunized against a target antigen if the cellular and/or humoral immune response to the target antigen occurs following the application of methods of the invention.
- Immunostimulatory nucleic acid: As used herein, the term immunostimulatory nucleic acid refers to a nucleic acid capable of inducing and/or enhancing an immune response. Immunostimulatory nucleic acids, as used herein, comprise ribonucleic acids and in particular deoxyribonucleic acids. Preferably, immunostimulatory nucleic acids contain at least one CpG motif e.g. a CG dinucleotide in which the C is unmethylated. The CG dinucleotide can be part of a palindromic sequence or can be encompassed within a non-palindromic sequence. Immunostimulatory nucleic acids not containing CpG motifs as described above encompass, by way of example, nucleic acids lacking CpG dinucleotides, as well as nucleic acids containing CG motifs with a methylated CG dinucleotide. The term “immunostimulatory nucleic acid” as used herein should also refer to nucleic acids that contain modified bases such as 4-bromo-cytosine.
- Immunostimulatory substance: As used herein, the term “immunostimulatory substance” refers to a substance capable of inducing and/or enhancing an immune response. Immunostimulatory substances, as used herein, include, but are not limited to, toll-like receptor activing substances and substances inducing cytokine secretion. Toll-like receptor activating substances include, but are not limited to, immunostimulatory nucleic acids, peptideoglycans, lipopolysaccharides, lipoteichonic acids, imidazoquinoline compounds, flagellins, lipoproteins, and immunostimulatory organic substances such as taxol.
- Natural origin: As used herein, the term “natural origin” means that the whole or parts thereof are not synthetic and exist or are produced in nature.
- Non-natural: As used herein, the term generally means not from nature, more specifically, the term means from the hand of man.
- Non-natural origin: As used herein, the term “non-natural origin” generally means synthetic or not from nature; more specifically, the term means from the hand of man.
- Ordered and repetitive antigen or antigenic determinant array: As used herein, the term “ordered and repetitive antigen or antigenic determinant array” generally refers to a repeating pattern of antigen or antigenic determinant, characterized by a typically and preferably uniform spacial arrangement of the antigens or antigenic determinants with respect to the core particle and virus-like particle, respectively. In one embodiment of the invention, the repeating pattern may be a geometric pattern. Typical and preferred examples of suitable ordered and repetitive antigen or antigenic determinant arrays are those which possess strictly repetitive paracrystalline orders of antigens or antigenic determinants, preferably with spacings of 0.5 to 30 nanometers, more preferably 5 to 15 nanometers.
- Oligonucleotide: As used herein, the terms “oligonucleotide” or “oligomer” refer to a nucleic acid sequence comprising 2 or more nucleotides, generally at least about 6 nucleotides to about 100,000 nucleotides, preferably about 6 to about 2000 nucleotides, and more preferably about 6 to about 300 nucleotides, even more preferably about 20 to about 300 nucleotides, and even more preferably about 20 to about 100 nucleotides. The terms “oligonucleotide” or “oligomer” also refer to a nucleic acid sequence comprising more than 100 to about 2000 nucleotides, preferably more than 100 to about 1000 nucleotides, and more preferably more than 100 to about 500 nucleotides. “Oligonucleotide” also generally refers to any polyribonucleotide or polydeoxribonucleotide, which may be unmodified RNA or DNA or modified RNA or DNA. “Oligonucleotide” includes, without limitation, single- and double-stranded DNA, DNA that is a mixture of single- and double-stranded regions, single- and double-stranded RNA, and RNA that is mixture of single- and double-stranded regions, hybrid molecules comprising DNA and RNA that may be single-stranded or, more typically, double-stranded or a mixture of single- and double-stranded regions. In addition, “oligonucleotide” refers to triple-stranded regions comprising RNA or DNA or both RNA and DNA. Further, an oligonucleotide can be synthetic, genomic or recombinant, e.g., X-DNA, cosmid DNA, artificial bacterial chromosome, yeast artificial chromosome and filamentous phage such as M13.
- The term “oligonucleotide” also includes DNAs or RNAs containing one or more modified bases and DNAs or RNAs with backbones modified for stability or for other reasons. For example, suitable nucleotide modifications/analogs include peptide nucleic acid, inosin, tritylated bases, phosphorothioates, alkylphosphorothioates, 5-nitroindole deoxyribofuranosyl, 5-methyldeoxycytosine and 5,6-dihydro-5,6-dihydroxydeoxythymidine. A variety of modifications have been made to DNA and RNA; thus, “oligonucleotide” embraces chemically, enzymatically or metabolically modified forms of polynucleotides as typically found in nature, as well as the chemical forms of DNA and RNA characteristic of viruses and cells. Other nucleotide analogs/modifications will be evident to those skilled in the art.
- Packaged: The term “packaged” as used herein refers to the state of an immunostimulatory substance, in particular an immunostimulatory nucleic acid in relation to the VLP. The term “packaged” as used herein includes binding that may be covalent, e.g., by chemically coupling, or non-covalent, e.g., ionic interactions, hydrophobic interactions, hydrogen bonds, etc. Covalent bonds can be, for example, ester, ether, phosphoester, amide, peptide, imide, carbon-sulfur bonds, carbon-phosphorus bonds, and the like. The term also includes the enclosement, or partial enclosement, of a substance. The term “packaged” includes terms such as “coupled, “enclosed” and “attached.” For example, the immunostimulatory substance such as the unmethylated CpG-containing oligonucleotide can be enclosed by the VLP without the existence of an actual binding, neither covalently nor non-covalently. In preferred embodiments, in particular, if immunostimulatory nucleic acids are the immunostimulatory substances, the term “packaged” indicates that the nucleic acid in a packaged state is not accessible to DNAse or RNAse hydrolysis. In preferred embodiments, the immunostimulatory nucleic acid is packaged inside the VLP capsids, most preferably in a non-covalent manner.
- The compositions of the invention can be combined, optionally, with a pharmaceutically-acceptable carrier. The term “pharmaceutically-acceptable carrier” as used herein means one or more compatible solid or liquid fillers, diluents or encapsulating substances which are suitable for administration into a human or other animal. The term “carrier” denotes an organic or inorganic ingredient, natural or synthetic, with which the active ingredient is combined to facilitate the application.
- Organic molecule: As used herein, the term “organic molecule” refers to any chemical entity of natural or synthetic origin. In particular the term “organic molecule” as used herein encompasses, for example, any molecule being a member of the group of nucleotides, lipids, carbohydrates, polysaccharides, lipopolysaccharides, steroids, alkaloids, terpenes and fatty acids, being either of natural or synthetic origin. In particular, the term “organic molecule” encompasses molecules such as nicotine, cocaine, heroin or other pharmacologically active molecules contained in drugs of abuse. In general an organic molecule contains or is modified to contain a chemical functionality allowing its coupling, binding or other method of attachment to the virus-like particle in accordance with the invention.
- Polypeptide: As used herein, the term “polypeptide” refers to a molecule composed of monomers (amino acids) linearly linked by amide bonds (also known as peptide bonds). It indicates a molecular chain of amino acids and does not refer to a specific length of the product. Thus, peptides, oligopeptides and proteins are included within the definition of polypeptide. This term is also intended to refer to post-expression modifications of the polypeptide, for example, glycosolations, acetylations, phosphorylations, and the like. A recombinant or derived polypeptide is not necessarily translated from a designated nucleic acid sequence. It may also be generated in any manner, including chemical synthesis.
- A substance which “enhances” an immune response refers to a substance in which an immune response is observed that is greater or intensified or deviated in any way with the addition of the substance when compared to the same immune response measured without the addition of the substance. For example, the lytic activity of cytotoxic T cells can be measured, e.g. using a51Cr release assay, with and without the substance.
- The amount of the substance at which the CTL lytic activity is enhanced as compared to the CTL lytic activity without the substance is said to be an amount sufficient to enhance the immune response of the animal to the antigen. In a preferred embodiment, the immune response in enhanced by a factor of at least about 2, more preferably by a factor of about 3 or more. The amount of cytokines secreted may also be altered.
- Effective Amount: As used herein, the term “effective amount” refers to an amount necessary or sufficient to realize a desired biologic effect. An effective amount of the composition would be the amount that achieves this selected result, and such an amount could be determined as a matter of routine by a person skilled in the art. For example, an effective amount for treating an immune system deficiency could be that amount necessary to cause activation of the immune system, resulting in the development of an antigen specific immune response upon exposure to antigen. The term is also synonymous with “sufficient amount.”
- The effective amount for any particular application can vary depending on such factors as the disease or condition being treated, the particular composition being administered, the size of the subject, and/or the severity of the disease or condition. One of ordinary skill in the art can empirically determine the effective amount of a particular composition of the present invention without necessitating undue experimentation.
- Self antigen: As used herein, the tem “self antigen” refers to proteins encoded by the host's DNA and products generated by proteins or RNA encoded by the host's DNA are defined as self. In addition, proteins that result from a combination of two or several self-molecules or that represent a fraction of a self-molecule and proteins that have a high homology two self-molecules as defined above (>95%, preferably >97%, more preferably >99%) may also be considered self. In a further preferred embodiment of the present invention, the antigen is a self antigen. Very preferred embodiments of self-antigens useful for the present invention are described WO 02/056905, the disclosures of which are herewith incorporated by reference in its entirety.
- Treatment: As used herein, the terms “treatment”, “treat”, “treated” or “treating” refer to prophylaxis and/or therapy. When used with respect to an infectious disease, for example, the term refers to a prophylactic treatment which increases the resistance of a subject to infection with a pathogen or, in other words, decreases the likelihood that the subject will become infected with the pathogen or will show signs of illness attributable to the infection, as well as a treatment after the subject has become infected in order to fight the infection, e.g., reduce or eliminate the infection or prevent it from becoming worse.
- Vaccine: As used herein, the term “vaccine” refers to a formulation which contains the composition of the present invention and which is in a form that is capable of being administered to an animal. Typically, the vaccine comprises a conventional saline or buffered aqueous solution medium in which the composition of the present invention is suspended or dissolved. In this form, the composition of the present invention can be used conveniently to prevent, ameliorate, or otherwise treat a condition. Upon introduction into a host, the vaccine is able to provoke an immune response including, but not limited to, the production of antibodies, cytokines and/or other cellular responses.
- Optionally, the vaccine of the present invention additionally includes an adjuvant which can be present in either a minor or major proportion relative to the compound of the present invention. The term “adjuvant” as used herein refers to non-specific stimulators of the immune response or substances that allow generation of a depot in the host which when combined with the vaccine of the present invention provide for an even more enhanced immune response. A variety of adjuvants can be used. Examples include incomplete Freund's adjuvant, aluminum hydroxide and modified muramyldipeptide. The term “adjuvant” as used herein also refers to typically specific stimulators of the immune response which when combined with the vaccine of the present invention provide for an even more enhanced and typically specific immune response. Examples include, but limited to, GM-CSF, IL-2, IL-12, IFNα. Further examples are within the knowledge of the person skilled in the art.
- Virus-like particle: As used herein, the term “virus-like particle” refers to a structure resembling a virus particle but which has not been demonstrated to be pathogenic. Typically, a virus-like particle in accordance with the invention does not carry genetic information encoding for the proteins of the virus-like particle. In general, virus-like particles lack the viral genome and, therefore, are noninfectious. Also, virus-like particles can often be produced in large quantities by heterologous expression and can be easily purified. Some virus-like particles may contain nucleic acid distinct from their genome. As indicated, a virus-like particle in accordance with the invention is non replicative and noninfectious since it lacks all or part of the viral genome, in particular the replicative and infectious components of the viral genome. A virus-like particle in accordance with the invention may contain nucleic acid distinct from their genome. A typical and preferred embodiment of a virus-like particle in accordance with the present invention is a viral capsid such as the viral capsid of the corresponding virus, bacteriophage, or RNA-phage. The terms “viral capsid” or “capsid”, as interchangeably used herein, refer to a macromolecular assembly composed of viral protein subunits. Typically and preferably, the viral protein subunits assemble into a viral capsid and capsid, respectively, having a structure with an inherent repetitive organization, wherein said structure is, typically, spherical or tubular. For example, the capsids of RNA-phages or HBcAg's have a spherical form of icosahedral symmetry. The term “capsid-like structure” as used herein, refers to a macromolecular assembly composed of viral protein subunits ressembling the capsid morphology in the above defined sense but deviating from the typical symmetrical assembly while maintaining a sufficient degree of order and repetitiveness.
- Virus-like particle of a bacteriophage: As used herein, the term “virus-like particle of a bacteriophage” refers to a virus-like particle resembling the structure of a bacteriophage, being non replicative and noninfectious, and lacking at least the gene or genes encoding for the replication machinery of the bacteriophage, and typically also lacking the gene or genes encoding the protein or proteins responsible for viral attachment to or entry into the host. This definition should, however, also encompass virus-like particles of bacteriophages, in which the aforementioned gene or genes are still present but inactive, and, therefore, also leading to non-replicative and noninfectious virus-like particles of a bacteriophage.
- VLP of RNA phage coat protein: The capsid structure formed from the self-assembly of 180 subunits of RNA phage coat protein and optionally containing host RNA is referred to as a “VLP of RNA phage coat protein”. A specific example is the VLP of Qβ coat protein. In this particular case, the VLP of Qβ coat protein may either be assembled exclusively from Qβ CP subunits (generated by expression of a Qβ CP gene containing, for example, a TAA stop codon precluding any expression of the longer A1 protein through suppression, see Kozlovska, T. M., et al.,Intervirology 39: 9-15 (1996)), or additionally contain A1 protein subunits in the capsid assembly.
- The term “virus particle” as used herein refers to the morphological form of a virus. In some virus types it comprises a genome surrounded by a protein capsid; others have additional structures (e.g., envelopes, tails, etc.).
- Non-enveloped viral particles are made up of a proteinaceous capsid that surrounds and protects the viral genome. Enveloped viruses also have a capsid structure surrounding the genetic material of the virus but, in addition, have a lipid bilayer envelope that surrounds the capsid. In a preferred embodiment of the invention, the VLP's are free of a lipoprotein envelope or a lipoprotein-containing envelope. In a further preferred embodiment, the VLP's are free of an envelope altogether.
- One, a, or an: When the terms “one,” “a,” or “an” are used in this disclosure, they mean “at least one” or “one or more,” unless otherwise indicated.
- As will be clear to those skilled in the art, certain embodiments of the invention involve the use of recombinant nucleic acid technologies such as cloning, polymerase chain reaction, the purification of DNA and RNA, the expression of recombinant proteins in prokaryotic and eukaryotic cells, etc. Such methodologies are well known to those skilled in the art and can be conveniently found in published laboratory methods manuals (e.g., Sambrook, J. et al., eds., M
OLECULAR CLONING , A LABORATORY MANUAL, 2nd. edition, Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. (1989); Ausubel, F. et al., eds., CURRENT PROTOCOLS IN MOLECULAR BIOLOGY , John H. Wiley & Sons, Inc. (1997)). Fundamental laboratory techniques for working with tissue culture cell lines (Celis, J., ed., CELL BIOLOGY , Academic Press, 2nd edition, (1998)) and antibody-based technologies (Harlow, E. and Lane, D., “Antibodies: A Laboratory Manual,” Cold Spring Harbor Laboratory, Cold Spring Harbor, N.Y. (1988); Deutscher, M. P., “Guide to Protein Purification,” Meth. Enzymol. 128, Academic Press San Diego (1990); Scopes, R. K., “Protein Purification Principles and Practice,” 3rd ed., Springer-Verlag, New York (1994)) are also adequately described in the literature, all of which are incorporated herein by reference. - 2. Compositions and Methods for Enhancing an Immune Response
- The disclosed invention provides compositions and methods for enhancing an immune response against one or more antigens in an animal.
- Compositions of the invention comprise, or alternatively consist of, a virus-like particle and an immunostimulatory substance, preferably an immunostimulatory nucleic acid, and even more preferably an unmethylated CpG-containing oligonucleotide where the an immunostimulatory substance, the immunostimulatory nucleic acid or the oligonucleotide is bound to the virus-like particle. Furthermore, the invention conveniently enables the practitioner to construct such a composition for various treatment and/or prophylactic prevention purposes, which include the prevention and/or treatment of infectious diseases, as well as chronic infectious diseases, and the prevention and/or treatment of cancers, for example.
- Virus-like particles in the context of the present application refer to structures resembling a virus particle but which are not pathogenic. In general, virus-like particles lack the viral genome and, therefore, are noninfectious. Also, virus-like particles can be produced in large quantities by heterologous expression and can be easily purified.
- In a preferred embodiment, the virus-like particle is a recombinant virus-like particle. The skilled artisan can produce VLPs using recombinant DNA technology and virus coding sequences which are readily available to the public. For example, the coding sequence of a virus envelope or core protein can be engineered for expression in a baculovirus expression vector using a commercially available baculovirus vector, under the regulatory control of a virus promoter, with appropriate modifications of the sequence to allow functional linkage of the coding sequence to the regulatory sequence. The coding sequence of a virus envelope or core protein can also be engineered for expression in a bacterial expression vector, for example.
- Examples of VLPs include, but are not limited to, the capsid proteins of Hepatitis B virus (Ulrich, et al,Virus Res. 50:141-182 (1998)), measles virus (Warnes, et al., Gene 160:173-178 (1995)), Sindbis virus, rotavirus (U.S. Pat. Nos. 5,071,651 and 5,374,426), foot-and-mouth-disease virus (Twomey, et al., Vaccine 13:1603-1610, (1995)), Norwalk virus (Jiang, X., et al., Science 250:1580-1583 (1990); Matsui, S. M., et al., J Clin. Invest. 87:1456-1461 (1991)), the retroviral GAG protein (PCT Patent Appl. No. WO 96/30523), the retrotransposon Ty protein p1, the surface protein of Hepatitis B virus (WO 92/11291), human papilloma virus (WO 98/15631), human polyoma virus (Sasnauskas K., et al., Biol. Chem. 380(3):381-386 (1999); Sasnauskas K., et al., Generation of recombinant virus-like particles of different polyomaviruses in yeast. 3rd Interational Workshop “Virus-like particles as vaccines.” Berlin, September 26-29 (2001)), RNA phages, Ty, fr-phage, GA-phage, AP 205-phage and, in particular, Qβ-phage.
- As will be readily apparent to those skilled in the art, the VLP of the invention is not limited to any specific form. The particle can be synthesized chemically or through a biological process, which can be natural or non-natural. By way of example, this type of embodiment includes a virus-like particle or a recombinant form thereof. In a more specific embodiment, the VLP can comprise, or alternatively consist of, recombinant polypeptides of Rotavirus; recombinant polypeptides of Norwalk virus; recombinant polypeptides of Alphavirus; recombinant proteins which form bacterial pili or pilus-like structures; recombinant polypeptides of Foot and Mouth Disease virus; recombinant polypeptides of measles virus, recombinant polypeptides of Sindbis virus, recombinant polypeptides of Retrovirus; recombinant polypeptides of Hepatitis B virus (e.g., a HBcAg); recombinant polypeptides of Tobacco mosaic virus; recombinant polypeptides of Flock House Virus; recombinant polypeptides of human Papillomavirus; recombinant polypeptides of Polyoma virus and, in particular, recombinant polypeptides of human Polyoma virus, and in particular recombinant polypeptides of BK virus; recombinant polypeptides of bacteriophages, recombinant polypeptides of RNA phages; recombinant polypeptides of Ty; recombinant polypeptides of fr-phage, recombinant polypeptides of GA-phage, recombinant polypeptides of AP 205-phage and, in particular, recombinant polypeptides of Qβ-phage. The virus-like particle can further comprise, or alternatively consist of, one or more fragments of such polypeptides, as well as variants of such polypeptides. Variants of polypeptides can share, for example, at least 80%, 85%, 90%, 95%, 97%, or 99% identity at the amino acid level with their wild-type counterparts.
- In a preferred embodiment, the virus-like particle comprises, consists essentially of, or alternatively consists of recombinant proteins, or fragments thereof, of a RNA-phage. Preferably, the RNA-phage is selected from the group consisting of a) bacteriophage Qβ; b) bacteriophage R17; c) bacteriophage fr; d) bacteriophage GA; e) bacteriophage SP; f) bacteriophage MS2; g)
bacteriophage Ml 1; h) bacteriophage MX1; i) bacteriophage NL95; k) bacteriophage f2; and 1) bacteriophage PP7. - In another preferred embodiment of the present invention, the virus-like particle comprises, or alternatively consists essentially of, or alternatively consists of recombinant proteins, or fragments thereof, of the RNA-bacteriophage Qβ or of the RNA-bacteriophage fr.
- In a further preferred embodiment of the present invention, the recombinant proteins comprise, or alternatively consist essentially of, or alternatively consist of coat proteins of RNA phages.
- RNA-phage coat proteins forming capsids or VLPs, or fragments of the bacteriophage coat proteins compatible with self-assembly into a capsid or a VLP, are, therefore, further preferred embodiments of the present invention. Bacteriophage Qβ coat proteins, for example, can be expressed recombinantly inE. coli. Further, upon such expression these proteins spontaneously form capsids. Additionally, these capsids form a structure with an inherent repetitive organization.
- Specific preferred examples of bacteriophage coat proteins which can be used to prepare compositions of the invention include the coat proteins of RNA bacteriophages such as bacteriophage Qβ (SEQ ID NO:10; PIR Database, Accession No. VCBPQβ referring to Qβ CP and SEQ ID NO: 11; Accession No. AAA16663 referring to Qβ A1 protein), bacteriophage R17 (SEQ ID NO:12; PIR Accession No. VCBPR7), bacteriophage fr (SEQ ID NO:13; PIR Accession No. VCBPFR), bacteriophage GA (SEQ ID NO:14; GenBank Accession No. NP-040754), bacteriophage SP (SEQ ID NO:15; GenBank Accession No. CAA30374 referring to SP CP and SEQ ID NO: 16; Accession No. referring to SP A1 protein), bacteriophage MS2 (SEQ ID NO:17; PIR Accession No. VCBPM2), bacteriophage M11 (SEQ ID NO:18; GenBank Accession No. AAC06250), bacteriophage MX1 (SEQ ID NO:19; GenBank Accession No. AAC14699), bacteriophage NL95 (SEQ ID NO:20; GenBank Accession No. AAC14704), bacteriophage f2 (SEQ ID NO: 21; GenBank Accession No. P03611), bacteriophage PP7 (SEQ ID NO: 22). Furthermore, the A1 protein of bacteriophage Qβ or C-terminal truncated forms missing as much as 100, 150 or 180 amino acids from its C-terminus may be incorporated in a capsid assembly of Qβ coat proteins. Generally, the percentage of Qβ A1 protein relative to Qβ CP in the capsid assembly will be limited, in order to ensure capsid formation.
- Qβ coat protein has also been found to self-assemble into capsids when expressed inE. coli (Kozlovska T M. et al., GENE 137: 133-137 (1993)). The obtained capsids or virus-like particles showed an icosahedral phage-like capsid structure with a diameter of 25 nm and T=3 quasi symmetry. Further, the crystal structure of phage Qβ has been solved. The capsid contains 180 copies of the coat protein, which are linked in covalent pentamers and hexamers by disulfide bridges (Golmohammadi, R. et al., Structure 4: 543-5554 (1996)) leading to a remarkable stability of the capsid of Qβ coat protein. Capsids or VLPs made from recombinant Qβ coat protein may contain, however, subunits not linked via disulfide links to other subunits within the capsid, or incompletely linked. Thus, upon loading recombinant Qβ capsid on non-reducing SDS-PAGE, bands corresponding to monomeric Qβ coat protein as well as bands corresponding to the hexamer or pentamer of Qβ coat protein are visible. Incompletely disulfide-linked subunits could appear as dimer, trimer or even tetramer bands in non-reducing SDS-PAGE. Qβ capsid protein also shows unusual resistance to organic solvents and denaturing agents. Surprisingly, we have observed that DMSO and acetonitrile concentrations as high as 30%, and Guanidinium concentrations as high as 1 M do not affect the stability of the capsid. The high stability of the capsid of Qβ coat protein is an advantageous feature, in particular, for its use in immunization and vaccination of mammals and humans in accordance of the present invention.
- Upon expression inE. coli, the N-terminal methionine of Qβ coat protein is usually removed, as we observed by N-terminal Edman sequencing as described in Stoll, E. et al. J. Biol. Chem. 252:990-993 (1977). VLP composed from Qβ coat proteins where the N-terminal methionine has not been removed, or VLPs comprising a mixture of Qβ coat proteins where the N-terminal methionine is either cleaved or present are also within the scope of the present invention.
- Further RNA phage coat proteins have also been shown to self-assemble upon expression in a bacterial host (Kastelein, RA. et al.,Gene 23: 245-254 (1983), Kozlovskaya, T M. et al., Dokl. Akad. Nauk SSSR 287: 452-455 (1986), Adhin, MR. et al., Virology 170: 238-242 (1989), Ni, CZ., et al., Protein Sci. 5: 2485-2493 (1996), Priano, C. et al., J. Mol. Biol. 249: 283-297 (1995)). The Qβ phage capsid contains, in addition to the coat protein, the so called read-through protein A1 and the maturation protein A2. A1 is generated by suppression at the UGA stop codon and has a length of 329 aa. The capsid of phage Qβ recombinant coat protein used in the invention is devoid of the A2 lysis protein, and contains RNA from the host. The coat protein of RNA phages is an RNA binding protein, and interacts with the stem loop of the ribosomal binding site of the replicase gene acting as a translational repressor during the life cycle of the virus. The sequence and structural elements of the interaction are known (Witherell, G W. & Uhlenbeck, O C. Biochemistry 28: 71-76 (1989); Lim F. et al., J. Biol. Chem. 271: 31839-31845 (1996)). The stem loop and RNA in general are known to be involved in the virus assembly (Golmohammadi, R. et al., Structure 4: 543-5554 (1996)).
- In a further preferred embodiment of the present invention, the virus-like particle comprises, or alternatively consists essentially of, or alternatively consists of recombinant proteins, or fragments thereof, of a RNA-phage, wherein the recombinant proteins comprise, consist essentially of or alternatively consist of mutant coat proteins of a RNA phage, preferably of mutant coat proteins of the RNA phages mentioned above. In another preferred embodiment, the mutant coat proteins of the RNA phage have been modified by removal of at least one lysine residue by way of substitution, or by addition of at least one lysine residue by way of substitution; alternatively, the mutant coat proteins of the RNA phage have been modified by deletion of at least one lysine residue, or by addition of at least one lysine residue by way of insertion.
- In another preferred embodiment, the virus-like particle comprises, or alternatively consists essentially of, or alternatively consists of recombinant proteins, or fragments thereof, of the RNA-bacteriophage Qβ, wherein the recombinant proteins comprise, or alternatively consist essentially of, or alternatively consist of coat proteins having an amino acid sequence of SEQ ID NO:10, or a mixture of coat proteins having amino acid sequences of SEQ ID NO:10 and of SEQ ID NO: 11 or mutants of SEQ ID NO: 11 and wherein the N-terminal methionine is preferably cleaved.
- In a further preferred embodiment of the present invention, the virus-like particle comprises, consists essentially of or alternatively consists of recombinant proteins of Qβ, or fragments thereof, wherein the recombinant proteins comprise, or alternatively consist essentially of, or alternatively consist of mutant Qβ coat proteins. In another preferred embodiment, these mutant coat proteins have been modified by removal of at least one lysine residue by way of substitution, or by addition of at least one lysine residue by way of substitution. Alternatively, these mutant coat proteins have been modified by deletion of at least one lysine residue, or by addition of at least one lysine residue by way of insertion.
- Four lysine residues are exposed on the surface of the capsid of Qβ coat protein. Qβ mutants, for which exposed lysine residues are replaced by arginines can also be used for the present invention. The following Qβ coat protein mutants and mutant Qβ VLPs can, thus, be used in the practice of the invention: “Qβ-240” (Lys13-Arg; SEQ ID NO:23), “Qβ-243” (Asn 10-Lys; SEQ ID NO:24), “Qβ-250” (Lys 2-Arg, Lys13-Arg; SEQ ID NO:25), “Qβ-251” (SEQ ID NO:26) and “Qβ-259” (Lys 2-Arg, Lys16-Arg; SEQ ID NO:27). Thus, in further preferred embodiment of the present invention, the virus-like particle comprises, consists essentially of or alternatively consists of recombinant proteins of mutant Qβ coat proteins, which comprise proteins having an amino acid sequence selected from the group of a) the amino acid sequence of SEQ ID NO: 23; b) the amino acid sequence of SEQ ID NO:24; c) the amino acid sequence of SEQ ID NO: 25; d) the amino acid sequence of SEQ ID NO:26; and e) the amino acid sequence of SEQ ID NO: 27. The construction, expression and purification of the above indicated Qβ coat proteins, mutant Qβ coat protein VLPs and capsids, respectively, are disclosed in pending U.S. application Ser. No. 10/050,902 filed on Jan. 18, 2002. In particular is hereby referred to Example 18 of above mentioned application.
- In a further preferred embodiment of the present invention, the virus-like particle comprises, or alternatively consists essentially of, or alternatively consists of recombinant proteins of Qβ, or fragments thereof, wherein the recombinant proteins comprise, consist essentially of or alternatively consist of a mixture of either one of the foregoing Qβ mutants and the corresponding A1 protein.
- In a further preferred embodiment of the present invention, the virus-like particle comprises, or alternatively essentially consists of, or alternatively consists of recombinant proteins, or fragments thereof, of RNA-phage AP205.
- The AP205 genome consists of a maturation protein, a coat protein, a replicase and two open reading frames not present in related phages; a lysis gene and an open reading frame playing a role in the translation of the maturation gene (Klovins, J., et al.,J. Gen. Virol. 83: 1523-33 (2002)). AP205 coat protein can be expressed from plasmid pAP283-58 (SEQ ID NO: 79), which is a derivative of pQb10 (Kozlovska, T. M. et al., Gene 137:133-37 (1993)), and which contains an AP205 ribosomal binding site. Alternatively, AP205 coat protein may be cloned into pQb185, downstream of the ribosomal binding site present in the vector. Both approaches lead to expression of the protein and formation of capsids as described in the co-pending US provisional patent application with the title “Molecular Antigen Arrays” (Application No. 60/396,126) and having been filed on Jul. 17, 2002, which is incorporated by reference in its entirety. Vectors pQb10 and pQb185 are vectors derived from pGEM vector, and expression of the cloned genes in these vectors is controlled by the trp promoter (Kozlovska, T. M. et al., Gene 137:133-37 (1993)). Plasmid pAP283-58 (SEQ ID NO:79) comprises a putative AP205 ribosomal binding site in the following sequence, which is downstream of the XbaI site, and immediately upstream of the ATG start codon of the AP205 coat protein: tctagaATTTTCTGCGCACCCAT CCCGGGTGGCGCCCAAAGTGAGGAAAATCACatg. The vector pQb185 comprises a Shine Delagarno sequence downstream from the XbaI site and upstream of the start codon (tctagaTTAACCCAACGCGTAGGAGTCAGGCCatg, Shine Delagarno sequence underlined).
- In a further preferred embodiment of the present invention, the virus-like particle comprises, or alternatively essentially consists of, or alternatively consists of recombinant coat proteins, or fragments thereof, of the RNA-phage AP205.
- This preferred embodiment of the present invention, thus, comprises AP205 coat proteins that form capsids. Such proteins are recombinantly expressed, or prepared from natural sources. AP205 coat proteins produced in bacteria spontaneously form capsids, as evidenced by Electron Microscopy (EM) and immunodiffusion. The structural properties of the capsid formed by the AP205 coat protein (SEQ ID NO: 80) and those formed by the coat protein of the AP205 RNA phage are nearly indistinguishable when seen in EM. AP205 VLPs are highly immunogenic, and can be linked with antigens and/or antigenic determinants to generate vaccine constructs displaying the antigens and/or antigenic determinants oriented in a repetitive manner. High titers are elicited against the so displayed antigens showing that bound antigens and/or antigenic determinants are accessible for interacting with antibody molecules and are immunogenic.
- In a further preferred embodiment of the present invention, the virus-like particle comprises, or alternatively essentially consists of, or alternatively consists of recombinant mutant coat proteins, or fragments thereof, of the RNA-phage AP205.
- Assembly-competent mutant forms of AP205 VLPs, including AP205 coat protein with the subsitution of proline at
amino acid 5 to threonine (SEQ ID NO: 81), may also be used in the practice of the invention and leads to a further preferred embodiment of the invention. These VLPs, AP205 VLPs derived from natural sources, or AP205 viral particles, may be bound to antigens to produce ordered repetitive arrays of the antigens in accordance with the present invention. - AP205 P5-T mutant coat protein can be expressed from plasmid pAP281-32 (SEQ ID No. 82), which is derived directly from pQb185, and which contains the mutant AP205 coat protein gene instead of the Qβ coat protein gene. Vectors for expression of the AP205 coat protein are transfected intoE. coli for expression of the AP205 coat protein.
- Methods for expression of the coat protein and the mutant coat protein, respectively, leading to self-assembly into VLPs are described in co-pending U.S. provisional patent application with the title “Molecular Antigen Arrays” Application No. 60/396,126) and having been filed on Jul. 17, 2002, which is incorporated by reference in its entirety. SuitableE. coli strains include, but are not limited to, E. coli K802, JM 109, RR1. Suitable vectors and strains and combinations thereof can be identified by testing expression of the coat protein and mutant coat protein, respectively, by SDS-PAGE and capsid formation and assembly by optionally first purifying the capsids by gel filtration and subsequently testing them in an immunodiffusion assay (Ouchterlony test) or Electron Microscopy (Kozlovska, T. M. et al., Gene 137:133-37 (1993)).
- AP205 coat proteins expressed from the vectors pAP283-58 and AP281-32 may be devoid of the initial Methionine amino-acid, due to processing in the cytoplasm of E. coli. Cleaved, uncleaved forms of AP205 VLP, or mixtures thereof are further preferred embodiments of the invention.
- In a further preferred embodiment of the present invention, the virus-like particle comprises, or alternatively essentially consists of, or alternatively consists of a mixture of recombinant coat proteins, or fragments thereof, of the RNA-phage AP205 and of recombinant mutant coat proteins, or fragments thereof, of the RNA-phage AP205.
- In a further preferred embodiment of the present invention, the virus-like particle comprises, or alternatively essentially consists of, or alternatively consists of fragments of recombinant coat proteins or recombinant mutant coat proteins of the RNA-phage AP205.
- Recombinant AP205 coat protein fragments capable of assembling into a VLP and a capsid, respectively are also useful in the practice of the invention. These fragments may be generated by deletion, either internally or at the termini of the coat protein and mutant coat protein, respectively. Insertions in the coat protein and mutant coat protein sequence or fusions of antigen sequences to the coat protein and mutant coat protein sequence, and compatible with assembly into a VLP, are further embodiments of the invention and lead to chimeric AP205 coat proteins, and particles, respectively. The outcome of insertions, deletions and fusions to the coat protein sequence and whether it is compatible with assembly into a VLP can be determined by electron microscopy.
- The particles formed by the AP205 coat protein, coat protein fragments and chimeric coat proteins described above, can be isolated in pure form by a combination of fractionation steps by precipitation and of purification steps by gel filtration using e.g. Sepharose CL-4B, Sepharose CL-2B, Sepharose CL-6B columns and combinations thereof as described in the co-pending US provisional patent application with the title “Molecular Antigen Arrays (Application No. 60/396,126) and having been filed on Jul. 17, 2002, which is incorporated by reference in its entirety. Other methods of isolating virus-like particles are known in the art, and may be used to isolate the virus-like particles (VLPs) of bacteriophage AP205. For example, the use of ultracentrifugation to isolate VLPs of the yeast retrotransposon Ty is described in U.S. Pat. No. 4,918,166, which is incorporated by reference herein in its entirety.
- The crystal structure of several RNA bacteriophages has been determined (Golmohammadi, R. et al.,Structure 4:543-554 (1996)). Using such information, surface exposed residues can be identified and, thus, RNA-phage coat proteins can be modified such that one or more reactive amino acid residues can be inserted by way of insertion or substitution. As a consequence, those modified forms of bacteriophage coat proteins can also be used for the present invention. Thus, variants of proteins which form capsids or capsid-like structures (e.g., coat proteins of bacteriophage Qβ, bacteriophage R17, bacteriophage fr, bacteriophage GA, bacteriophage SP, and bacteriophage MS2, bacteriophage AP 205) can also be used to prepare compositions of the present invention.
- Although the sequence of the variants proteins discussed above will differ from their wild-type counterparts, these variant proteins will generally retain the ability to form capsids or capsid-like structures. Thus, the invention further includes compositions and vaccine compositions, respectively, which further includes variants of proteins which form capsids or capsid-like structures, as well as methods for preparing such compositions and vaccine compositions, respectively, individual protein subunits used to prepare such compositions, and nucleic acid molecules which encode these protein subunits. Thus, included within the scope of the invention are variant forms of wild-type proteins which form capsids or capsid-like structures and retain the ability to associate and form capsids or capsid-like structures.
- As a result, the invention further includes compositions and vaccine compositions, respectively, comprising proteins, which comprise, or alternatively consist essentially of, or alternatively consist of amino acid sequences which are at least 80%, 85%, 90%, 95%, 97%, or 99% identical to wild-type proteins which form ordered arrays and have an inherent repetitive structure, respectively.
- Further included within the scope of the invention are nucleic acid molecules which encode proteins used to prepare compositions of the present invention.
- In other embodiments, the invention further includes compositions comprising proteins, which comprise, or alternatively consist essentially of, or alternatively consist of amino acid sequences which are at least 80%, 85%, 90%, 95%, 97%, or 99% identical to any of the amino acid sequences shown in SEQ ID NOs:10-27.
- Proteins suitable for use in the present invention also include C-terminal truncation mutants of proteins which form capsids or capsid-like structures, or VLPs. Specific examples of such truncation mutants include proteins having an amino acid sequence shown in any of SEQ ID NOs:10-27 where 1, 2, 5, 7, 9, 10, 12, 14, 15, or 17 amino acids have been removed from the C-terminus. Typically, theses C-terminal truncation mutants will retain the ability to form capsids or capsid-like structures.
- Further proteins suitable for use in the present invention also include N-terminal truncation mutants of proteins which form capsids or capsid-like structures. Specific examples of such truncation mutants include proteins having an amino acid sequence shown in any of SEQ ID NOs:10-27 where 1, 2, 5, 7, 9, 10, 12, 14, 15, or 17 amino acids have been removed from the N-terminus. Typically, these N-terminal truncation mutants will retain the ability to form capsids or capsid-like structures.
- Additional proteins suitable for use in the present invention include N- and C-terminal truncation mutants which form capsids or capsid-like structures. Suitable truncation mutants include proteins having an amino acid sequence shown in any of SEQ ID NOs:10-27 where 1, 2, 5, 7, 9, 10, 12, 14, 15, or 17 amino acids have been removed from the N-terminus and 1, 2, 5, 7, 9, 10, 12, 14, 15, or 17 amino acids have been removed from the C-terminus. Typically, these N-terminal and C-terminal truncation mutants will retain the ability to form capsids or capsid-like structures.
- The invention further includes compositions comprising proteins which comprise, or alternatively consist essentially of, or alternatively consist of, amino acid sequences which are at least 80%, 85%, 90%, 95%, 97%, or 99% identical to the above described truncation mutants.
- The invention thus includes compositions and vaccine compositions prepared from proteins which form capsids or VLPs, methods for preparing these compositions from individual protein subunits and VLPs or capsids, methods for preparing these individual protein subunits, nucleic acid molecules which encode these subunits, and methods for vaccinating and/or eliciting immunological responses in individuals using these compositions of the present invention.
- Fragments of VLPs which retain the ability to induce an immune response can comprise, or alternatively consist of, polypeptides which are about 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 250, 300, 350, 400, 450 or 500 amino acids in length, but will obviously depend on the length of the sequence of the subunit composing the VLP. Examples of such fragments include fragments of proteins discussed herein which are suitable for the preparation of the immune response enhancing composition.
- In another preferred embodiment of the invention, the VLP's are free of a lipoprotein envelope or a lipoprotein-containing envelope. In a further preferred embodiment, the VLP's are free of an envelope altogether.
- The lack of a lipoprotein envelope or lipoprotein-containing envelope and, in particular, the complete lack of an envelope leads to a more defined virus-like particle in its structure and composition. Such more defined virus-like particles, therefore, may minimize side-effects. Moreover, the lack of a lipoprotein-containing envelope or, in particular, the complete lack of an envelope avoids or minimizes incorporation of potentially toxic molecules and pyrogens within the virus-like particle.
- As previously stated, the invention includes virus-like particles or recombinant forms thereof. Skilled artisans have the knowledge to produce such particles and attach antigens thereto. By way of providing other examples, the invention provides herein for the production of Hepatitis B virus-like particles as virus-like particles (Example 1).
- In one embodiment, the particles used in compositions of the invention are composed of a Hepatitis B capsid (core) protein (HBcAg) or a fragment of a HBcAg which has been modified to either eliminate or reduce the number of free cysteine residues. Zhou et al. (J. Virol. 66:5393-5398 (1992)) demonstrated that HBcAgs which have been modified to remove the naturally resident cysteine residues retain the ability to associate and form multimeric structures. Thus, core particles suitable for use in compositions of the invention include those comprising modified HBcAgs, or fragments thereof, in which one or more of the naturally resident cysteine residues have been either deleted or substituted with another amino acid residue (e.g., a serine residue).
- The HBcAg is a protein generated by the processing of a Hepatitis B core antigen precursor protein. A number of isotypes of the HBcAg have been identified and their amino acids sequences are readily available to those skilled in the art. For example, the HBcAg protein having the amino acid sequence shown in FIG. 1 is 185 amino acids in length and is generated by the processing of a 212 amino acid Hepatitis B core antigen precursor protein. This processing results in the removal of 29 amino acids from the N-terminus of the Hepatitis B core antigen precursor protein. Similarly, the HBcAg protein that is 185 amino acids in length is generated by the processing of a 214 amino acid Hepatitis B core antigen precursor protein.
- In preferred embodiments, vaccine compositions of the invention will be prepared using the processed form of a HBcAg (i.e., a HBcAg from which the N-terminal leader sequence of the Hepatitis B core antigen precursor protein have been removed).
- Further, when HBcAgs are produced under conditions where processing will not occur, the HBcAgs will generally be expressed in “processed” form. For example, bacterial systems, such asE. coli, generally do not remove the leader sequences, also referred to as “signal peptides,” of proteins which are normally expressed in eukaryotic cells. Thus, when an E. coli expression system directing expression of the protein to the cytoplasm is used to produce HBcAgs of the invention, these proteins will generally be expressed such that the N-terminal leader sequence of the Hepatitis B core antigen precursor protein is not present.
- The preparation of Hepatitis B virus-like particles, which can be used for the present invention, is disclosed, for example, in WO 00/32227, and hereby in particular in Examples 17 to 19 and 21 to 24, as well as in WO 01/85208, and hereby in particular in Examples 17 to 19, 21 to 24, 31 and 41, and in pending U.S. application Ser. No. 10/050,902 filed on Jan.18, 2002. For the latter application, it is in particular referred to Example 23, 24, 31 and 51. All three documents are explicitly incorporated herein by reference.
- The present invention also includes HBcAg variants which have been modified to delete or substitute one or more additional cysteine residues. Thus, the vaccine compositions of the invention include compositions comprising HBcAgs in which cysteine residues not present in the amino acid sequence shown in FIG. 1 have been deleted.
- It is well known in the art that free cysteine residues can be involved in a number of chemical side reactions. These side reactions include disulfide exchanges, reaction with chemical substances or metabolites that are, for example, injected or formed in a combination therapy with other substances, or direct oxidation and reaction with nucleotides upon exposure to UV light. Toxic adducts could thus be generated, especially considering the fact that HBcAgs have a strong tendency to bind nucleic acids. The toxic adducts would thus be distributed between a multiplicity of species, which individually may each be present at low concentration, but reach toxic levels when together.
- In view of the above, one advantage to the use of HBcAgs in vaccine compositions which have been modified to remove naturally resident cysteine residues is that sites to which toxic species can bind when antigens or antigenic determinants are attached would be reduced in number or eliminated altogether.
- A number of naturally occurring HBcAg variants suitable for use in the practice of the present invention have been identified. Yuan et al., (J. Virol. 73:10122-10128 (1999)), for example, describe variants in which the isoleucine residue at position corresponding to position 97 in SEQ ID NO:28 is replaced with either a leucine residue or a phenylalanine residue. The amino acid sequences of a number of HBcAg variants, as well as several Hepatitis B core antigen precursor variants, are disclosed in GenBank reports AAF121240 (SEQ ID NO:29), AF121239 (SEQ ID NO:30), X85297 (SEQ ID NO:31), X02496 (SEQ ID NO:32), X85305 (SEQ ID NO:33), X85303 (SEQ ID NO:34), AF151735 (SEQ ID NO:35), X85259 (SEQ ID NO:36), X85286 (SEQ ID NO:37), X85260 (SEQ ID NO:38), X85317 (SEQ ID NO:39), X85298 (SEQ ID NO:40), AF043593 (SEQ ID NO:41), M20706 (SEQ ID NO:42), X85295 (SEQ ID NO:43), X80925 (SEQ ID NO:44), X85284 (SEQ ID NO:45), X85275 (SEQ ID NO:46), X72702 (SEQ ID NO:47), X85291 (SEQ ID NO:48), X65258 (SEQ ID NO:49), X85302 (SEQ ID NO:50), M32138 (SEQ ID NO:51), X85293 (SEQ ID NO:52), X85315 (SEQ ID NO:53), U95551 (SEQ ID NO:54), X85256 (SEQ ID NO:55), X85316 (SEQ ID NO:56), X85296 (SEQ ID NO:57), AB033559 (SEQ ID NO:58), X59795 (SEQ ID NO:59), X85299 (SEQ ID NO:60), X85307 (SEQ ID NO:61), X65257 (SEQ ID NO:62), X85311 (SEQ ID NO:63), X85301 (SEQ ID NO:64), X85314 (SEQ ID NO:65), X85287 (SEQ ID NO:66), X85272 (SEQ ID NO:67), X85319 (SEQ ID NO:68), AB010289 (SEQ ID NO:69), X85285 (SEQ ID NO:70), AB010289 (SEQ ID NO:71), AF121242 (SEQ ID NO:72), M90520 (SEQ ID NO:73), P03153 (SEQ ID NO:74), AF110999 (SEQ ID NO:75), and M95589 (SEQ ID NO:76), the disclosures of each of which are incorporated herein by reference. These HBcAg variants differ in amino acid sequence at a number of positions, including amino acid residues which corresponds to the amino acid residues located at
positions - HBcAgs suitable for use in the present invention can be derived from any organism so long as they are able to enclose or to be coupled or otherwise attached to, in particular as long as they are capable of packaging, an unmethylated CpG-containing oligonucleotide and induce an immune response.
- As noted above, generally processed HBcAgs (i.e., those which lack leader sequences) will be used in the vaccine compositions of the invention. The present invention includes vaccine compositions, as well as methods for using these compositions, which employ the above described variant HBcAgs.
- Further included within the scope of the invention are additional HBcAg variants which are capable of associating to form dimeric or multimeric structures. Thus, the invention further includes vaccine compositions comprising HBcAg polypeptides comprising, or alternatively consisting of, amino acid sequences which are at least 80%, 85%, 90%, 95%, 97% or 99% identical to any of the wild-type amino acid sequences, and forms of these proteins which have been processed, where appropriate, to remove the N-terminal leader sequence.
- Whether the amino acid sequence of a polypeptide has an amino acid sequence that is at least 80%, 85%, 90%, 95%, 97% or 99% identical to one of the wild-type amino acid sequences, or a subportion thereof, can be determined conventionally using known computer programs such the Bestfit program. When using Bestfit or any other sequence alignment program to determine whether a particular sequence is, for instance, 95% identical to a reference amino acid sequence, the parameters are set such that the percentage of identity is calculated over the full length of the reference amino acid sequence and that gaps in homology of up to 5% of the total number of amino acid residues in the reference sequence are allowed.
- The HBcAg variants and precursors having the amino acid sequences set out in SEQ ID NOs: 29-72 and 73-76 are relatively similar to each other. Thus, reference to an amino acid residue of a HBcAg variant located at a position which corresponds to a particular position in SEQ ID NO:77, refers to the amino acid residue which is present at that position in the amino acid sequence shown in SEQ ID NO:77. The homology between these HBcAg variants is for the most part high enough among Hepatitis B viruses that infect mammals so that one skilled in the art would have little difficulty reviewing both the amino acid sequence shown in SEQ ID NO:77 and in FIG. 1, respectively, and that of a particular HBcAg variant and identifying “corresponding” amino acid residues. Furthermore, the HBcAg amino acid sequence shown in SEQ ID NO:73, which shows the amino acid sequence of a HBcAg derived from a virus which infect woodchucks, has enough homology to the HBcAg having the amino acid sequence shown in SEQ ID NO:77 that it is readily apparent that a three amino acid residue insert is present in SEQ ID NO:73 between amino acid residues 155 and 156 of SEQ ID NO:77.
- The invention also includes vaccine compositions which comprise HBcAg variants of Hepatitis B viruses which infect birds, as wells as vaccine compositions which comprise fragments of these HBcAg variants. As one skilled in the art would recognize, one, two, three or more of the cysteine residues naturally present in these polypeptides could be either substituted with another amino acid residue or deleted prior to their inclusion in vaccine compositions of the invention.
- As discussed above, the elimination of free cysteine residues reduces the number of sites where toxic components can bind to the HBcAg, and also eliminates sites where cross-linking of lysine and cysteine residues of the same or of neighboring HBcAg molecules can occur. Therefore, in another embodiment of the present invention, one or more cysteine residues of the Hepatitis B virus capsid protein have been either deleted or substituted with another amino acid residue.
- In other embodiments, compositions and vaccine compositions, respectively, of the invention will contain HBcAgs from which the C-terminal region (e.g., amino acid residues 145-185 or 150-185 of SEQ ID NO: 77) has been removed. Thus, additional modified HBcAgs suitable for use in the practice of the present invention include C-terminal truncation mutants. Suitable truncation mutants include HBcAgs where 1, 5, 10, 15, 20, 25, 30, 34, 35, amino acids have been removed from the C-terminus.
- HBcAgs suitable for use in the practice of the present invention also include N-terminal truncation mutants. Suitable truncation mutants include modified HBcAgs where 1, 2, 5, 7, 9, 10, 12, 14, 15, or 17 amino acids have been removed from the N-terminus.
- Further HBcAgs suitable for use in the practice of the present invention include N- and C-terminal truncation mutants. Suitable truncation mutants include HBcAgs where 1, 2, 5, 7, 9, 10, 12, 14, 15, and 17 amino acids have been removed from the N-terminus and 1, 5, 10, 15, 20, 25, 30, 34, 35 amino acids have been removed from the C-terminus.
- The invention further includes compositions and vaccine compositions, respectively, comprising HBcAg polypeptides comprising, or alternatively essentially consisting of, or alternatively consisting of, amino acid sequences which are at least 80%, 85%, 90%, 95%, 97%, or 99% identical to the above described truncation mutants.
- In certain embodiments of the invention, a lysine residue is introduced into a HBcAg polypeptide, to mediate the binding of the antigen or antigenic determinant to the VLP of HBcAg. In preferred embodiments, compositions of the invention are prepared using a HBcAg comprising, or alternatively consisting of, amino acids 1-144, or 1-149, 1-185 of SEQ ID NO:77, which is modified so that the amino acids corresponding to positions 79 and 80 are replaced with a peptide having the amino acid sequence of Gly-Gly-Lys-Gly-Gly (SEQ ID NO:78). These compositions are particularly useful in those embodiments where an antigenic determinant is coupled to a VLP of HBcAg. In further preferred embodiments, the cysteine residues at positions 48 and 107 of SEQ ID NO:77 are mutated to serine. The invention further includes compositions comprising the corresponding polypeptides having amino acid sequences shown in any of SEQ ID NOs:29-74 which also have above noted amino acid alterations. Further included within the scope of the invention are additional HBcAg variants which are capable of associating to form a capsid or VLP and have the above noted amino acid alterations. Thus, the invention further includes compositions and vaccine compositions, respectively, comprising HBcAg polypeptides which comprise, or alternatively consist of, amino acid sequences which are at least 80%, 85%, 90%, 95%, 97% or 99% identical to any of the wild-type amino acid sequences, and forms of these proteins which have been processed, where appropriate, to remove the N-terminal leader sequence and modified with above noted alterations.
- Compositions or vaccine compositions of the invention may comprise mixtures of different HBcAgs. Thus, these vaccine compositions may be composed of HBcAgs which differ in amino acid sequence. For example, vaccine compositions could be prepared comprising a “wild-type” HBcAg and a modified HBcAg in which one or more amino acid residues have been altered (e.g., deleted, inserted or substituted). Further, preferred vaccine compositions of the invention are those which present highly ordered and repetitive antigen arrays.
- As previously disclosed, the invention is based on the surprising finding that immunostimulatory substances, preferably immunostimulatory nucleic acids and even more preferably DNA oligonucleotides can be packaged into VLPs. Unexpectedly, the nucleic acids present in VLPs can be replaced specifically by the immunostimulatory substances, preferably by the immunostimulatory nucleic acids and even more preferably by the DNA-oligonucleotides containing CpG motifs. As an example, the CpG-VLPs are dramatically more immunogenic and elicit more specific effects than their CpG-free counterparts and induce enhanced B and T cell responses. The immune response against antigens coupled, fused or attached otherwise to the VLPs is similarly enhanced as the immune response against the VLP itself. In addition, the T cell responses against both the VLPs and antigens are especially directed to the Th1 type. Furthermore, the packaged nucleic acids and CpGs, respectively, are protected from degradation, i.e., they are more stable. Moreover, non-specific activation of cells from the innate immune system is dramatically reduced.
- The innate immune system has the capacity to recognize invariant molecular pattern shared by microbial pathogens. Recent studies have revealed that this recognition is a crucial step in inducing effective immune responses. The main mechanism by which microbial products augment immune responses is to stimulate APC, expecially dendritic cells to produce proinflammatory cytokines and to expres high levels costimulatory molecules for T cells. These activated dendritic cells subsequently initiate primary T cell responses and dictate the type of T cell-mediated effector function.
- Two classes of nucleic acids, namely 1) bacterial DNA that contains immunostimulatory sequences, in particular unmethylated CpG dinucleotides within specific flanking bases (referred to as CpG motifs) and 2) double-stranded RNA synthesized by various types of viruses represent important members of the microbial components that enhance immune responses. Synthetic double stranded (ds) RNA such as polyinosinic-polycytidylic acid (poly I:C) are capable of inducing dendritic cells to produce proinflammatory cytokines and to express high levels of costimulatory molecules.
- A series of studies by Tokunaga and Yamamoto et al. has shown that bacterial DNA or synthetic oligodeoxynucleotides induce human PBMC and mouse spleen cells to produce type I interferon (IFN) (reviewed in Yamamoto et al., Springer Semin Immunopathol. 22:11-19). Poly (I:C) was originally synthesized as a potent inducer of type I IFN but also induces other cytokines such as IL-12.
- Preferred ribonucleic acid encompass polyinosinic-polycytidylic acid double-stranded RNA (poly I:C). Ribonucleic acids and modifications thereof as well as methods for their production have been described by Levy, H. B (Methods Enzymol. 1981, 78:242-251), DeClercq, E (Methods Enzymol. 1981,78:227-236) and Torrence, P. F. (Methods Enzymol 1981;78:326-331) and references therein. Ribonucleic acids can be isolated from organisms. Ribonucleic acids also encompass further synthetic ribonucleic acids, in particular synthetic poly (I:C) oligonucleotides that have been rendered nuclease resistant by modification of the phosphodiester backbone, in particular by phosphorothioate modifications. In a further embodiment the ribose backbone of poly (I:C) is replaced by a deoxyribose. Those skilled in the art know procedures how to synthesize synthetic oligonucleotides.
- In another preferred embodiment of the invention molecules that active toll-like receptors (TLR) are enclosed. Ten human toll-like receptors are known uptodate. They are activated by a variety of ligands. TLR2 is activated by peptidoglycans, lipoproteins, lipoteichonic acid and Zymosan; TLR3 is activated by double-stranded RNA such as poly (I:C); TLR4 is activated by lipopolysaccharide, lipoteichoic acids and taxol; TLR5 is activated by bacterial flagella, especially the flagellin protein; TLR6 is activated by peptidoglycans, TLR7 is activated by imiquimoid and imidazoquinoline compounds, such as R418 and TLR9 is activated by bacterial DNA, in particular CpG DNA. Ligands for TLR1, TLR8 and TLR10 are not known so far. However, recent reports indicate that same receptors can react with different ligands and that further receptors are present. The above list of ligands is not exhaustive and further ligands are within the knowledge of the person skilled in the art.
- Preferably, the unmethylated CpG-containing oligonucleotide comprises the sequence:
- 5′X1X2CGX3X4 3′
- wherein X1, X2, X3 and X4 are any nucleotide. In addition, the oligonucleotide can comprise about 6 to about 100,000 nucleotides, preferably about 6 to about 2000 nucleotides, more preferably about 20 to about 2000 nucleotides, and even more preferably comprises about 20 to about 300 nucleotides. In addition, the oligonucleotide can comprise more than 100 to about 2000 nucleotides, preferably more than 100 to about 1000 nucleotides, and more preferably more than 100 to about 500 nucleotides.
- In a preferred embodiment, the CpG-containing oligonucleotide contains one or more phosphorothioate modifications of the phosphate backbone. For example, a CpG-containing oligonucleotide having one or more phosphate backbone modifications or having all of the phosphate backbone modified and a CpG-containing oligonucleotide wherein one, some or all of the nucleotide phosphate backbone modifications are phosphorothioate modifications are included within the scope of the present invention.
- The CpG-containing oligonucleotide can also be recombinant, genomic, synthetic, cDNA, plasmid-derived and single or double stranded. For use in the instant invention, the nucleic acids can be synthesized de novo using any of a number of procedures well known in the art. For example, the b-cyanoethyl phosphoramidite method (Beaucage, S. L., and Caruthers, M. H.,Tet. Let. 22:1859 (1981); nucleoside H-phosphonate method (Garegg et al., Tet. Let. 27:4051-4054 (1986); Froehler et al., Nucl. Acid. Res. 14:5399-5407 (1986); Garegg et al., Tet. Let. 27:4055-4058 (1986), Gaffney et al., Tet. Let. 29:2619-2622 (1988)). These chemistries can be performed by a variety of automated oligonucleotide synthesizers available in the market. Alternatively, CpGs can be produced on a large scale in plasmids, (see Sambrook, T., et al., “Molecular Cloning: A Laboratory Manual,” Cold Spring Harbor laboratory Press, New York, 1989) which after being administered to a subject are degraded into oligonucleotides. Oligonucleotides can be prepared from existing nucleic acid sequences (e.g., genomic or cDNA) using known techniques, such as those employing restriction enzymes, exonucleases or endonucleases.
- The immunostimulatory substances, the immunostimulatory nucleic acids as well as the unmethylated CpG-containing oligonucleotide can be bound to the VLP by any way known is the art provided the composition enhances an immune response in an animal. For example, the oligonucleotide can be bound either covalently or non-covalently. In addition, the VLP can enclose, fully or partially, the immunostimulatory substances, the immunostimulatory nucleic acids as well as the unmethylated CpG-containing oligonucleotide. Preferably, the immunostimulatory nucleic acid as well as the unmethylated CpG-containing oligonucleotide can be bound to a VLP site such as an oligonucleotide binding site (either naturally or non-naturally occurring), a DNA binding site or a RNA binding site. In another embodiment, the VLP site comprises an arginine-rich repeat.
- One specific use for the compositions of the invention is to activate dendritic cells for the purpose of enhancing a specific immune response against antigens. The immune response can be enhanced using ex vivo or in vivo techniques. The ex vivo procedure can be used on autologous or heterologous cells, but is preferably used on autologous cells. In preferred embodiments, the dendritic cells are isolated from peripheral blood or bone marrow, but can be isolated from any source of dendritic cells. Ex vivo manipulation of dendritic cells for the purposes of cancer immunotherapy have been described in several references in the art, including Engleman, E. G.,Cytotechnology 25:1 (1997); Van Schooten, W., et al., Molecular Medicine Today, June, 255 (1997); Steinman, R. M., Experimental Hematology 24:849 (1996); and Gluckman, J. C., Cytokines, Cellular and Molecular Therapy 3:187 (1997).
- The dendritic cells can also be contacted with the inventive compositions using in vivo methods. In order to accomplish this, the CpGs are administered in combination with the VLP optionally coupled, fused or otherwise attached to an antigen directly to a subject in need of immunotherapy. In some embodiments, it is preferred that the VLPs/CpGs be administered in the local region of the tumor, which can be accomplished in any way known in the art, e.g., direct injection into the tumor.
- The inventive composition can further comprise an antigen or antigenic determinant bound to the virus-like particle. The invention provides for compositions that vary according to the antigen or antigenic determinant selected in consideration of the desired therapeutic effect. Very preferred antigens or antigenic determinants suitable for use in the present invention are disclosed in WO 00/32227, in WO 01/85208 and in WO 02/056905, the disclosures of which are herewith incorporated by reference in their entireties.
- The antigen can be any antigen of known or yet unknown provenance.
- It can be isolated from bacteria, viruses or other pathogens or can be a recombinant antigen obtained from expression of suitable nucleic acid coding therefor. It can also be isolated from prions, tumors, self-molecules, non-peptidic hapten molecules, allergens and hormones. In a preferred embodiment, the antigen is a recombinant antigen. The selection of the antigen is, of course, dependent upon the immunological response desired and the host.
- In one embodiment of the immune enhancing composition of the present invention, the immune response is induced against the VLP itself. In another embodiment of the invention a virus-like particle is coupled, fused or otherwise attached to an antigen/immunogen against which an enhanced immune response is desired.
- In a further preferred embodiment of the invention, the at least one antigen or antigenic determinant is fused to the virus-like particle. As outlined above, a VLP is typically composed of at least one subunit assembling into a VLP. Thus, in again a further preferred embodiment of the invention, the antigen or antigenic determinant is fused to at least one subunit of the virus-like particle or of a protein capable of being incorporated into a VLP generating a chimeric VLP-subunit-antigen fusion.
- Fusion of the antigen or antigenic determinant can be effected by insertion into the VLP subunit sequence, or by fusion to either the N- or C-terminus of the VLP-subunit or protein capable of being incorporated into a VLP. Hereinafter, when referring to fusion proteins of a peptide to a VLP subunit, the fusion to either ends of the subunit sequence or internal insertion of the peptide within the subunit sequence are encompassed.
- Fusion may also be effected by inserting antigen or antigenic determinant sequences into a variant of a VLP subunit where part of the subunit sequence has been deleted, that are further referred to as truncation mutants. Truncation mutants may have N- or C-terminal, or internal deletions of part of the sequence of the VLP subunit. For example, the specific VLP HBcAg with, for example, deletion of amino acid residues 79 to 81 is a truncation mutant with an internal deletion. Fusion of antigens or antigenic determinants to either the N- or C-terminus of the truncation mutants VLP-subunits also lead to embodiments of the invention. Likewise, fusion of an epitope into the sequence of the VLP subunit may also be effected by substitution, where for example for the specific VLP HBcAg, amino acids 79-81 are replaced with a foreign epitope. Thus, fusion, as referred to hereinafter, may be effected by insertion of the antigen or antigenic determinant sequence in the sequence of a VLP subunit, by substitution of part of the sequence of the VLP subunit with the antigen or antigenic determinant, or by a combination of deletion, substitution or insertions.
- The chimeric antigen or antigenic determinant −VLP subunit will be in general capable of self-assembly into a VLP. VLP displaying epitopes fused to their subunits are also herein referred to as chimeric VLPs. As indicated, the virus-like particle comprises or alternatively is composed of at least one VLP subunit. In a further embodiment of the invention, the virus-like particle comprises or alternatively is composed of a mixture of chimeric VLP subunits and non-chimeric VLP subunits, i.e. VLP subunits not having an antigen fused thereto, leading to so called mosaic particles. This may be advantageous to ensure formation of, and assembly to a VLP. In those embodiments, the proportion of chimeric VLP-subunits may be 1, 2, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 95% or higher.
- Flanking amino acid residues may be added to either end of the sequence of the peptide or epitope to be fused to either end of the sequence of the subunit of a VLP, or for internal insertion of such peptidic sequence into the sequence of the subunit of a VLP. Glycine and serine residues are particularly favored amino acids to be used in the flanking sequences added to the peptide to be fused. Glycine residues confer additional flexibility, which may diminish the potentially destabilizing effect of fusing a foreign sequence into the sequence of a VLP subunit.
- In a specific embodiment of the invention, the VLP is a Hepatitis B core antigen VLP. Fusion proteins of the antigen or antigenic determinant to either the N-terminus of a HBcAg (Neyrinck, S. et al.,Nature Med. 5:1157-1163 (1999)) or insertions in the so called major immunodominant region (MIR) have been described (Pumpens, P. and Grens, E., Intervirology 44:98-114 (2001)), WO 01/98333), and are preferred embodiments of the invention. Naturally occurring variants of HBcAg with deletions in the MIR have also been described (Pumpens, P. and Grens, E., Intervirology 44:98-114 (2001), which is expressly incorporated by reference in its entirety), and fusions to the N- or C-terminus, as well as insertions at the position of the MIR corresponding to the site of deletion as compared to a wt HBcAg are further embodiments of the invention. Fusions to the C-terminus have also been described (Pumpens, P. and Grens, E., Intervirology 44:98-114 (2001)). One skilled in the art will easily find guidance on how to construct fusion proteins using classical molecular biology techniques (Sambrook, J. et al., eds., Molecular Cloning, A Laboratory Manual, 2nd. edition, Cold Spring Habor Laboratory Press, Cold Spring Harbor, N.Y. (1989), Ho et al., Gene 77:51 (1989)). Vectors and plasmids encoding HBcAg and HBcAg fusion proteins and useful for the expression of a HBcAg and HBcAg fusion proteins have been described (Pumpens, P. & Grens, E. Intervirology 44: 98-114 (2001), Neyrinck, S. et al., Nature Med. 5:1157-1163 (1999)) and can be used in the practice of the invention. An important factor for the optimization of the efficiency of self-assembly and of the display of the epitope to be inserted in the MIR of HBcAg is the choice of the insertion site, as well as the number of amino acids to be deleted from the HBcAg sequence within the MIR (Pumpens, P. and Grens, E., Intervirology 44:98-114 (2001);
EP 0 421 635; U.S. Pat. No. 6,231,864) upon insertion, or in other words, which amino acids form HBcAg are to be substituted with the new epitope. For example, substitution of HBcAg amino acids 76-80, 79-81, 79-80, 75-85 or 80-81 with foreign epitopes has been described (Pumpens, P. and Grens, E., Intervirology 44:98-114 (2001); EP0421635; U.S. Pat. No. 6,231,864). HBcAg contains a long arginine tail (Pumpens, P. and Grens, E., Intervirology 44:98-114 (2001))which is dispensable for capsid assembly and capable of binding nucleic acids (Pumpens, P. and Grens, E., Intervirology 44:98-114 (2001)). HBcAg either comprising or lacking this arginine tail are both embodiments of the invention. - In a further preferred embodiment of the invention, the VLP is a VLP of a RNA phage. The major coat proteins of RNA phages spontaneously assemble into VLPs upon expression in bacteria, and in particular inE. coli. Specific examples of bacteriophage coat proteins which can be used to prepare compositions of the invention include the coat proteins of RNA bacteriophages such as bacteriophage Qβ (SEQ ID NO:10; PIR Database, Accession No. VCBPQβ referring to Qβ CP and SEQ ID NO: 11; Accession No. AAA16663 referring to Qβ A1 protein) and bacteriophage fr (SEQ ID NO: 13; PIR Accession No. VCBPFR).
- In a more preferred embodiment, the at least one antigen or antigenic determinant is fused to a Qβ coat protein. Fusion protein constructs wherein epitopes have been fused to the C-terminus of a truncated form of the Al protein of Qβ, or inserted within the A1 protein have been described (Kozlovska, T. M., et al., Intervirology, 39:9-15 (1996)). The A1 protein is generated by suppression at the UGA stop codon and has a length of 329 aa, or 328 aa, if the cleavage of the N-terminal methionine is taken into account. Cleavage of the N-terminal methionine before an alanine (the second amino acid encoded by the Qβ CP gene) usually takes place inE. coli, and such is the case for N-termini of the Qβ coat proteins. The part of the A1 gene, 3′ of the UGA amber codon encodes the CP extension, which has a length of 195 amino acids. Insertion of the at least one antigen or antigenic determinant between position 72 and 73 of the CP extension leads to further embodiments of the invention (Kozlovska, T. M., et al., Intervirology 39:9-15 (1996)). Fusion of an antigen or antigenic determinant at the C-terminus of a C-terminally truncated Qβ A1 protein leads to further preferred embodiments of the invention. For example, Kozlovska et al., (Intervirology, 39: 9-15 (1996)) describe Qβ A1 protein fusions where the epitope is fused at the C-terminus of the Qβ CP extension truncated at
position 19. - As described by Kozlovska et al. (Intervirology, 39: 9-15 (1996)), assembly of the particles displaying the fused epitopes typically requires the presence of both the A1 protein-antigen fusion and the wt CP to form a mosaic particle. However, embodiments comprising virus-like particles, and hereby in particular the VLPs of the RNA phage Qβ coat protein, which are exclusively composed of VLP subunits having at least one antigen or antigenic determinant fused thereto, are also within the scope of the present invention.
- The production of mosaic particles may be effected in a number of ways. Kozlovska et al.,Intervirology, 39:9-15 (1996), describe three methods, which all can be used in the practice of the invention. In the first approach, efficient display of the fused epitope on the VLPs is mediated by the expression of the plasmid encoding the Qβ A1 protein fusion having a UGA stop codong between CP and CP extension in a E. coli strain harboring a plasmid encoding a cloned UGA suppressor tRNA which leads to translation of the UGA codon into Trp (pISM3001 plasmid (Smiley B. K., et al., Gene 134:33-40 (1993))). In another approach, the CP gene stop codon is modified into UAA, and a second plasmid expressing the A1 protein-antigen fusion is cotransformed. The second plasmid encodes a different antibiotic resistance and the origin of replication is compatible with the first plasmid (Kozlovska, T. M., et al., Intervirology 39:9-15 (1996)). In a third approach, CP and the A1 protein-antigen fusion are encoded in a bicistronic manner, operatively linked to a promoter such as the Trp promoter, as described in FIG. 1 of Kozlovska et al., Intervirology, 39:9-15 (1996).
- In a further embodiment, the antigen or antigenic determinant is inserted between
amino acid 2 and 3 (numbering of the cleaved CP, that is wherein the N-terminal methionine is cleaved) of the fr CP, thus leading to an antigen or antigenic determinant −fr CP fusion protein. Vectors and expression systems for construction and expression of fr CP fusion proteins self-assembling to VLP and useful in the practice of the invention have been described (Pushko P. et al., Prot. Eng. 6:883-891 (1993)). In a specific embodiment, the antigen or antigenic determinant sequence is inserted into a deletion variant of the fr CP afteramino acid 2, whereinresidues - Fusion of epitopes in the N-terminal protuberant β-hairpin of the coat protein of RNA phage MS-2 and subsequent presentation of the fused epitope on the self-assembled VLP of RNA phage MS-2 has also been described (WO 92/13081), and fusion of an antigen or antigenic determinant by insertion or substitution into the coat protein of MS-2 RNA phage is also falling under the scope of the invention.
- In another embodiment of the invention, the antigen or antigenic determinant is fused to a capsid protein of papillomavirus. In a more specific embodiment, the antigen or antigenic determinant is fused to the major capsid protein LI of bovine papillomavirus type 1 (BPV-1). Vectors and expression systems for construction and expression of BPV-1 fusion proteins in a baculovirus/insect cells systems have been described (Chackerian, B. et al.,Proc. Natl. Acad. Sci. USA 96:2373-2378 (1999), WO 00/23955). Substitution of amino acids 130-136 of BPV-1 L1 with an antigen or antigenic determinant leads to a BPV-1 L1-antigen fusion protein, which is a preferred embodiment of the invention. Cloning in a baculovirus vector and expression in baculovirus infected Sf9 cells has been described, and can be used in the practice of the invention (Chackerian, B. et al., Proc. Natl. Acad. Sci. USA 96:2373-2378 (1999), WO 00/23955). Purification of the assembled particles displaying the fused antigen or antigenic determinant can be performed in a number of ways, such as for example gel filtration or sucrose gradient ultracentrifugation (Chackerian, B. et al., Proc. Natl. Acad. Sci. USA 96:2373-2378 (1999), WO 00/23955).
- In a further embodiment of the invention, the antigen or antigenic determinant is fused to a Ty protein capable of being incorporated into a Ty VLP. In a more specific embodiment, the antigen or antigenic determinant is fused to the p1 or capsid protein encoded by the TYA gene (Roth, J. F.,Yeast 16:785-795 (2000)). The yeast retrotransposons Ty1, 2, 3 and 4 have been isolated from Saccharomyces Serevisiae, while the retrotransposon Tf1 has been isolated from Schizosaccharomyces Pombae (Boeke, J. D. and Sandmeyer, S. B., “Yeast Transposable elements,” in The molecular and Cellular Biology of the Yeast Saccharomyces: Genome dynamics, Protein Synthesis, and Energetics, p. 193, Cold Spring Harbor Laboratory Press (1991)). The retrotransposons Ty1 and 2 are related to the copia class of plant and animal elements, while Ty3 belongs to the gypsy family of retrotransposons, which is related to plants and animal retroviruses. In the Ty1 retrotransposon, the p1 protein, also referred to as Gag or capsid protein, has a length of 440 amino acids. P1 is cleaved during maturation of the VLP at position 408, leading to the p2 protein, the essential component of the VLP.
- Fusion proteins to p1 and vectors for the expression of said fusion proteins in Yeast have been described (Adams, S. E., et al.,Nature 329:68-70 (1987)). So, for example, an antigen or antigenic determinant may be fused to p1 by inserting a sequence coding for the antigen or antigenic determinant into the BamH1 site of the pMA5620 plasmid (Adams, S. E., et al., Nature 329:68-70 (1987)). The cloning of sequences coding for foreign epitopes into the pMA5620 vector leads to expression of fusion proteins comprising amino acids 1-381 of p1 of Ty1-15, fused C-terminally to the N-terminus of the foreign epitope. Likewise, N-terminal fusion of an antigen or antigenic determinant, or internal insertion into the p1 sequence, or substitution of part of the p1 sequence are also meant to fall within the scope of the invention. In particular, insertion of an antigen or antigenic determinant into the Ty sequence between amino acids 30-31, 67-68, 113-114 and 132-133 of the Ty protein p1 (EP06771 11) leads to preferred embodiments of the invention.
- Further VLPs suitable for fusion of antigens or antigenic determinants are, for example, Retrovirus-like-particles (WO9630523), HIV2 Gag (Kang, Y. C., et al,Biol. Chem. 380:353-364 (1999)), Cowpea Mosaic Virus (Taylor, K. M. et al., Biol. Chem. 380:387-392 (1999)), parvovirus VP2 VLP (Rueda, P. et al., Virology 263:89-99 (1999)), HBsAg (U.S. Pat. No. 4,722,840, EP0020416B1).
- Examples of chimeric VLPs suitable for the practice of the invention are also those described inIntervirology 39:1 (1996). Further examples of VLPs contemplated for use in the invention are: HPV-1, HPV-6, HPV-11, HPV-16, HPV-18, HPV-33, HPV-45, CRPV, COPV, HIV GAG, Tobacco Mosaic Virus. Virus-like particles of SV-40, Polyomavirus, Adenovirus, Herpes Simplex Virus, Rotavirus and Norwalk virus have also been made, and chimeric VLPs of those VLPs comprising an antigen or antigenic determinant are also within the scope of the present invention.
- As indicated, embodiments comprising antigens fused to the virus-like particle by insertion within the sequence of the virus-like particle building monomer are also within the scope of the present invention. In some cases, antigens can be inserted in a form of the virus-like particle building monomer containing deletions. In these cases, the virus-like particle building monomer may not be able to form virus-like structures in the absence of the inserted antigen.
- In some instances, recombinant DNA technology can be utilized to fuse a heterologous protein to a VLP protein (Kratz, P.A., et al.,Proc. Natl. Acad. Sci. USA 96:1915 (1999)). For example, the present invention encompasses VLPs recombinantly fused or chemically conjugated (including both covalently and non-covalently conjugations) to an antigen (or portion thereof, preferably at least 10, 20 or 50 amino acids) of the present invention to generate fusion proteins or conjugates. The fusion does not necessarily need to be direct, but can occur through linker sequences. More generally, in the case that epitopes, either fused, conjugated or otherwise attached to the virus-like particle, are used as antigens in accordance with the invention, spacer or linker sequences are typically added at one or both ends of the epitopes. Such linker sequences preferably comprise sequences recognized by the proteasome, proteases of the endosomes or other vesicular compartment of the cell.
- One way of coupling is by a peptide bond, in which the conjugate can be a contiguous polypeptide, i.e. a fusion protein. In a fusion protein according to the present invention, different peptides or polypeptides are linked in frame to each other to form a contiguous polypeptide. Thus a first portion of the fusion protein comprises an antigen or immunogen and a second portion of the fusion protein, either N-terminal or C-terminal to the first portion, comprises a VLP. Alternatively, internal insertion into the VLP, with optional linking sequences on both ends of the antigen, can also be used in accordance with the present invention.
- When HBcAg is used as the VLP, it is preferred that the antigen is linked to the C-terminal end of the HBcAg particle. The hepatitis B core antigen (HBcAg) exhibiting a C-terminal fusion of the MHC class I restricted peptide p33 derived from lymphocytic choriomeningitis virus (LCMV) glycoprotein was used as a model antigen (HBcAg-p33). The 185 amino acids long wild type HBc protein assembles into highly structured particles composed of 180 subunits assuming icosahedral geometry. The flexibility of the HBcAg and other VLPs in accepting relatively large insertions of foreign sequences at different positions while retaining the capacity to form structured capsids is well documented in the literature. This makes the HBc VLPs attractive candidates for the design of non-replicating vaccines.
- A flexible linker sequence (e.g. a polyglycine/polyserine-containing sequence such as [Gly4 Ser]2 (Huston et al., Meth. Enzymol 203:46-88 (1991)) can be inserted into the fusion protein between the antigen and ligand. Also, the fusion protein can be constructed to contain an “epitope tag”, which allows the fusion protein to bind an antibody (e.g. monoclonal antibody) for example for labeling or purification purposes. An example of an epitope tag is a Glu-Glu-Phe tripeptide which is recognized by the monoclonal antibody YL½.
- The invention also relates to the chimeric DNA which contains a sequence coding for the VLP and a sequence coding for the antigen/immunogen. The DNA can be expressed, for example, in insect cells transformed with Baculoviruses, in yeast or in bacteria. There are no restrictions regarding the expression system, of which a large selection is available for routine use. Preferably, a system is used which allows expression of the proteins in large amounts. In general, bacterial expression systems are preferred on account of their efficiency. One example of a bacterial expression system suitable for use within the scope of the present invention is the one described by Clarke et al., J Gen. Virol. 71: 1109-1117 (1990); Borisova et al.,J. Virol. 67: 3696-3701 (1993); and Studier et al., Methods Enzymol. 185:60-89 (1990). An example of a suitable yeast expression system is the one described by Emr, Methods Enzymol. 185:231-3 (1990); Baculovirus systems, which have previously been used for preparing capsid proteins, are also suitable. Constitutive or inducible expression systems can be used. By the choice and possible modification of available expression systems it is possible to control the form in which the proteins are obtained.
- In a specific embodiment of the invention, the antigen to which an enhanced immune response is desired is coupled, fused or otherwise attached in frame to the Hepatitis B virus capsid (core) protein (HBcAg). However, it will be clear to all individuals in the art that other virus-like particles can be utilized in the fusion protein construct of the invention.
- In a further preferred embodiment of the present invention, the at least one antigen or antigenic determinant is bound to the virus-like particle by at least one covalent bond. Preferably, the least one antigen or antigenic determinant is bound to the virus-like particle by at least one covalent bond, said covalent bond being a non-peptide bond leading to an antigen or antigenic determinant array and antigen or antigenic determinant −VLP conjugate, respectively. This antigen or antigenic determinant array and conjugate, respectively, has typically and preferably a repetitive and ordered structure since the at least one antigen or antigenic determinant is bound to the VLP in an oriented manner. The formation of a repetitive and ordered antigen or antigenic determinant −VLP array and conjugate, respectively, is ensured by an oriented and directed as well as defined binding and attachment, respectively, of the at least one antigen or antigenic determinant to the VLP as will become apparent in the following. Furthermore, the typical inherent highly repetitive and organized structure of the VLPs advantageously contributes to the display of the antigen or antigenic determinant in a highly ordered and repetitive fashion leading to a highly organized and repetitive antigen or antigenic determinant −VLP array and conjugate, respectively.
- Therefore, the preferred inventive conjugates and arrays, respectively, differ from prior art conjugates in their highly organized structure, dimensions, and in the repetitiveness of the antigen on the surface of the array. The preferred embodiment of this invention, furthermore, allows expression of the particle in an expression host guaranteeing proper folding and assembly of the VLP, to which the antigen is then further coupled
- The present invention discloses methods of binding of antigen or antigenic determinant to VLPs. As indicated, in one aspect of the invention, the at least one antigen or antigenic determinant is bound to the VLP by way of chemical cross-linking, typically and preferably by using a heterobifunctional cross-linker. Several hetero-bifunctional cross-linkers are known to the art. In preferred embodiments, the hetero-bifunctional cross-linker contains a functional group which can react with preferred first attachment sites, i.e. with the side-chain amino group of lysine residues of the VLP or at least one VLP subunit, and a further functional group which can react with a preferred second attachment site, i.e. a cysteine residue fused to the antigen or antigenic determinant and optionally also made available for reaction by reduction. The first step of the procedure, typically called the derivatization, is the reaction of the VLP with the cross-linker. The product of this reaction is an activated VLP, also called activated carrier. In the second step, unreacted cross-linker is removed using usual methods such as gel filtration or dialysis. In the third step, the antigen or antigenic determinant is reacted with the activated VLP, and this step is typically called the coupling step. Unreacted antigen or antigenic determinant may be optionally removed in a fourth step, for example by dialysis. Several hetero-bifunctional cross-linkers are known to the art. These include the preferred cross-linkers SMPH (Pierce), Sulfo-MBS, Sulfo-EMCS, Sulfo-GMBS, Sulfo-SIAB, Sulfo-SMPB, Sulfo-SMCC, SVSB, SIA and other cross-linkers available for example from the Pierce Chemical Company (Rockford, Ill., USA), and having one functional group reactive towards amino groups and one functional group reactive towards cysteine residues. The above mentioned cross-linkers all lead to formation of a thioether linkage. Another class of cross-linkers suitable in the practice of the invention is characterized by the introduction of a disulfide linkage between the antigen or antigenic determinant and the VLP upon coupling. Preferred cross-linkers belonging to this class include for example SPDP and Sulfo-LC-SPDP (Pierce). The extent of derivatization of the VLP with cross-linker can be influenced by varying experimental conditions such as the concentration of each of the reaction partners, the excess of one reagent over the other, the pH, the temperature and the ionic strength. The degree of coupling, i.e. the amount of antigens or antigenic determinants per subunits of the VLP can be adjusted by varying the experimental conditions described above to match the requirements of the vaccine.
- A particularly favored method of binding of antigens or antigenic determinants to the VLP, is the linking of a lysine residue on the surface of the VLP with a cysteine residue on the antigen or antigenic determinant. In some embodiments, fusion of an amino acid linker containing a cysteine residue, as a second attachment site or as a part thereof, to the antigen or antigenic determinant for coupling to the VLP may be required.
- In general, flexible amino acid linkers are favored. Examples of the amino acid linker are selected from the group consisting of: (a) CGG; (b) N-terminal gamma 1-linker; (c) N-terminal gamma 3-linker; (d) Ig hinge regions; (e) N-terminal glycine linkers; (f) (G)kC(G)n with n=0-12 and k=0-5; (g) N-terminal glycine-serine linkers; (h) (G)kC(G)m(S)l(GGGGS)n with n=0-3, k=0-5, m=0-10, 1=0-2; (i) GGC; (k) GGC-NH2; (1) C-terminal gamma 1-linker; (m) C-terminal gamma 3-linker; (n) C-terminal glycine linkers; (o) (G)nC(G)k with n=0-12 and k=0-5; (p) C-terminal glycine-serine linkers; (q) (G)m(S)l(GGGGS)n(G)oC(G)k with n=0-3, k=0-5, m=0-10, 1=0-2, and o=0-8.
- Further examples of amino acid linkers are the hinge region of Immunoglobulins, glycine serine linkers (GGGGS)n, and glycine linkers (G)n all further containing a cysteine residue as second attachment site and optionally further glycine residues. Typically preferred examples of said amino acid linkers are N-terminal gammal: CGDKTHTSPP; C-terminal gamma 1: DKTHTSPPCG; N-terminal gamma 3: CGGPKPSTPPGSSGGAP; C-terminal gamma 3: PKPSTPPGSSGGAPGGCG; N-terminal glycine linker: GCGGGG and C-terminal glycine linker: GGGGCG.
- Other amino acid linkers particularly suitable in the practice of the invention, when a hydrophobic antigen or antigenic determinant is bound to a VLP, are CGKKGG, or CGDEGG for N-terminal linkers, or GGKKGC and GGEDGC, for the C-terminal linkers. For the C-terminal linkers, the terminal cysteine is optionally C-terminally amidated.
- In preferred embodiments of the present invention, GGCG, GGC or GGC-NH2 (“NH2” stands for amidation) linkers at the C-terminus of the peptide or CGG at its N-terminus are preferred as amino acid linkers. In general, glycine residues will be inserted between bulky amino acids and the cysteine to be used as second attachment site, to avoid potential steric hindrance of the bulkier amino acid in the coupling reaction. In the most preferred embodiment of the invention, the amino acid linker GGC-NH2 is fused to the C-terminus of the antigen or antigenic determinant.
- The cysteine residue present on the antigen or antigenic determinant has to be in its reduced state to react with the hetero-bifunctional cross-linker on the activated VLP, that is a free cysteine or a cysteine residue with a free sulfhydryl group has to be available. In the instance where the cysteine residue to function as binding site is in an oxidized form, for example if it is forming a disulfide bridge, reduction of this disulfide bridge with e.g. DTT, TCEP or β-mercaptoethanol is required. Low concentrations of reducing agent are compatible with coupling as described in WO 02/05690, higher concentrations inhibit the coupling reaction, as a skilled artisan would know, in which case the reductand has to be removed or its concentration decreased prior to coupling, e.g. by dialysis, gel filtration or reverse phase HPLC.
- Binding of the antigen or antigenic determinant to the VLP by using a hetero-bifunctional cross-linker according to the preferred methods described above, allows coupling of the antigen or antigenic determinant to the VLP in an oriented fashion. Other methods of binding the antigen or antigenic determinant to the VLP include methods wherein the antigen or antigenic determinant is cross-linked to the VLP using the carbodiimide EDC, and NHS. In further methods, the antigen or antigenic determinant is attached to the VLP using a homo-bifunctional cross-linker such as glutaraldehyde, DSG, BM[PEO]4, BS3, (Pierce Chemical Company, Rockford, Ill., USA) or other known homo-bifunctional cross-linkers whith functional groups reactive towards amine groups or carboxyl groups of the VLP.
- Other methods of binding the VLP to an antigen or antigenic determinant include methods where the VLP is biotinylated, and the antigen or antigenic determinant expressed as a streptavidin-fusion protein, or methods wherein both the antigen or antigenic determinant and the VLP are biotinylated, for example as described in WO 00/23955. In this case, the antigen or antigenic determinant may be first bound to streptavidin or avidin by adjusting the ratio of antigen or antigenic determinant to streptavidin such that free binding sites are still available for binding of the VLP, which is added in the next step. Alternatively, all components may be mixed in a “one pot” reaction. Other ligand-receptor pairs, where a soluble form of the receptor and of the ligand is available, and are capable of being cross-linked to the VLP or the antigen or antigenic determinant, may be used as binding agents for binding antigen or antigenic determinant to the VLP. Alternatively, either the ligand or the receptor may be fused to the antigen or antigenic determinant, and so mediate binding to the VLP chemically bound or fused either to the receptor, or the ligand respectively. Fusion may also be effected by insertion or substitution.
- As already indicated, in a favored embodiment of the present invention, the VLP is the VLP of a RNA phage, and in a more preferred embodiment, the VLP is the VLP of RNA phage Qβ coat protein.
- One or several antigen molecules, i.e. one or several antigens or antigenic determinants, can be attached to one subunit of the capsid or VLP of RNA phages coat proteins, preferably through the exposed lysine residues of the VLP of RNA phages, if sterically allowable. A specific feature of the VLP of the coat protein of RNA phages and in particular of the Qβ coat protein VLP is thus the possibility to couple several antigens per subunit. This allows for the generation of a dense antigen array.
- In a preferred embodiment of the invention, the binding and attachment, respectively, of the at least one antigen or antigenic determinant to the virus-like particle is by way of interaction and association, respectively, between at least one first attachment site of the virus-like particle and at least one second attachment of the antigen or antigenic determinant.
- VLPs or capsids of Qβ coat protein display a defined number of lysine residues on their surface, with a defined topology with three lysine residues pointing towards the interior of the capsid and interacting with the RNA, and four other lysine residues exposed to the exterior of the capsid. These defined properties favor the attachment of antigens to the exterior of the particle, rather than to the interior of the particle where the lysine residues interact with RNA. VLPs of other RNA phage coat proteins also have a defined number of lysine residues on their surface and a defined topology of these lysine residues.
- In further preferred embodiments of the present invention, the first attachment site is a lysine residue and/or the second attachment comprises sulfhydryl group or a cysteine residue. In a very preferred embodiment of the present invention, the first attachment site is a lysine residue and the second attachment is a cysteine residue.
- In very preferred embodiments of the invention, the antigen or antigenic determinant is bound via a cysteine residue, to lysine residues of the VLP of RNA phage coat protein, and in particular to the VLP of Qβ coat protein.
- Another advantage of the VLPs derived from RNA phages is their high expression yield in bacteria that allows production of large quantities of material at affordable cost.
- As indicated, the inventive conjugates and arrays, respectively, differ from prior art conjugates in their highly organized structure, dimensions, and in the repetitiveness of the antigen on the surface of the array. Moreover, the use of the VLPs as carriers allow the formation of robust antigen arrays and conjugates, respectively, with variable antigen density. In particular, the use of VLPs of RNA phages, and hereby in particular the use of the VLP of RNA phage Qβ coat protein allows to achieve very high epitope density. In particular, a density of more than 1.5 epitopes per subunit could be reached by coupling the human Aβ1-6 peptide to the VLP of Qβ coat protein. The preparation of compositions of VLPs of RNA phage coat proteins with a high epitope density can be effected using the teaching of this application. In prefered embodiment of the invention, when an antigen or antigenic determinant is coupled to the VLP of Qβ coat protein, an average number of antigen or antigenic determinant per subunit of 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4 2.5, 2.6, 2.7, 2.8, 2.9, or higher is preferred.
- The second attachment site, as defined herein, may be either naturally or non-naturally present with the antigen or the antigenic determinant. In the case of the absence of a suitable natural occurring second attachment site on the antigen or antigenic determinant, such a, then non-natural second attachment has to be engineered to the antigen.
- As described above, four lysine residues are exposed on the surface of the VLP of Qβ coat protein. Typically these residues are derivatized upon reaction with a cross-linker molecule. In the instance where not all of the exposed lysine residues can be coupled to an antigen, the lysine residues which have reacted with the cross-linker are left with a cross-linker molecule attached to the ε-amino group after the derivatization step. This leads to disappearance of one or several positive charges, which may be detrimental to the solubility and stability of the VLP. By replacing some of the lysine residues with arginines, as in the disclosed Qβ coat protein mutants described below, we prevent the excessive disappearance of positive charges since the arginine residues do not react with the cross-linker. Moreover, replacement of lysine residues by arginines may lead to more defined antigen arrays, as fewer sites are available for reaction to the antigen.
- Accordingly, exposed lysine residues were replaced by arginines in the following Qβ coat protein mutants and mutant Qβ VLPs disclosed in this application: Qβ-240 (Lys13-Arg; SEQ ID NO:23), Qβ-250 (Lys 2-Arg, Lys13-Arg; SEQ ID NO: 25) and Qβ-259 (Lys 2-Arg, Lys16-Arg; SEQ ID NO:27). The constructs were cloned, the proteins expressed, the VLPs purified and used for coupling to peptide and protein antigens. Qβ-251; (SEQ ID NO: 26) was also constructed, and guidance on how to express, purify and couple the VLP of Qβ-251 coat protein can be found throughout the application.
- In a further embodiment, we disclose a Qβ mutant coat protein with one additional lysine residue, suitable for obtaining even higher density arrays of antigens. This mutant Qβ coat protein, Qβ-243 (Asn 10-Lys; SEQ ID NO: 24), was cloned, the protein expressed, and the capsid or VLP isolated and purified, showing that introduction of the additional lysine residue is compatible with self-assembly of the subunits to a capsid or VLP. Thus, antigen or antigenic determinant arrays and conjugates, respectively, may be prepared using VLP of Qβ coat protein mutants. A particularly favored method of attachment of antigens to VLPs, and in particular to VLPs of RNA phage coat proteins is the linking of a lysine residue present on the surface of the VLP of RNA phage coat proteins with a cysteine residue added to the antigen. In order for a cysteine residue to be effective as second attachment site, a sulfhydryl group must be available for coupling. Thus, a cysteine residue has to be in its reduced state, that is, a free cysteine or a cysteine residue with a free sulfhydryl group has to be available. In the instant where the cysteine residue to function as second attachment site is in an oxidized form, for example if it is forming a disulfide bridge, reduction of this disulfide bridge with e.g. DTT, TCEP or β-mercaptoethanol is required. The concentration of reductand, and the molar excess of reductand over antigen has to be adjusted for each antigen. A titration range, starting from concentrations as low as 10 μM or lower, up to 10 to 20 mM or higher reductand if required is tested, and coupling of the antigen to the carrier assessed. Although low concentrations of reductand are compatible with the coupling reaction as described in WO 02/056905, higher concentrations inhibit the coupling reaction, as a skilled artisan would know, in which case the reductand has to be removed or its concentration decreased, e.g. by dialysis, gel filtration or reverse phase HPLC. Advantageously, the pH of the dialysis or equilibration buffer is lower than 7, preferably 6. The compatibility of the low pH buffer with antigen activity or stability has to be tested.
- Epitope density on the VLP of RNA phage coat proteins can be modulated by the choice of cross-linker and other reaction conditions. For example, the cross-linkers Sulfo-GMBS and SMPH typically allow reaching high epitope density. Derivatization is positively influenced by high concentration of reactands, and manipulation of the reaction conditions can be used to control the number of antigens coupled to VLPs of RNA phage coat proteins, and in particular to VLPs of Qβ coat protein.
- Prior to the design of a non-natural second attachment site the position at which it should be fused, inserted or generally engineered has to be chosen. The selection of the position of the second attachment site may, by way of example, be based on a crystal structure of the antigen. Such a crystal structure of the antigen may provide information on the availability of the C- or N-termini of the molecule (determined for example from their accessibility to solvent), or on the exposure to solvent of residues suitable for use as second attachment sites, such as cysteine residues. Exposed disulfide bridges, as is the case for Fab fragments, may also be a source of a second attachment site, since they can be generally converted to single cysteine residues through mild reduction, with e.g. 2-mercaptoethylamine, TCEP, β-mercaptoethanol or DTT. Mild reduction conditions not affecting the immunogenicity of the antigen will be chosen. In general, in the case where immunization with a self-antigen is aiming at inhibiting the interaction of this self-antigen with its natural ligands, the second attachment site will be added such that it allows generation of antibodies against the site of interaction with the natural ligands. Thus, the location of the second attachment site will be selected such that steric hindrance from the second attachment site or any amino acid linker containing the same is avoided. In further embodiments, an antibody response directed at a site distinct from the interaction site of the self-antigen with its natural ligand is desired. In such embodiments, the second attachment site may be selected such that it prevents generation of antibodies against the interaction site of the self-antigen with its natural ligands.
- Other criteria in selecting the position of the second attachment site include the oligomerization state of the antigen, the site of oligomerization, the presence of a cofactor, and the availability of experimental evidence disclosing sites in the antigen structure and sequence where modification of the antigen is compatible with the function of the self-antigen, or with the generation of antibodies recognizing the self-antigen.
- In very preferred embodiments, the antigen or antigenic determinant comprises a single second attachment site or a single reactive attachment site capable of association with the first attachment sites on the core particle and the VLPs or VLP subunits, respectively. This further ensures a defined and uniform binding and association, respectively, of the at least one, but typically more than one, preferably more than 10, 20, 40, 80, 120 antigens to the core particle and VLP, respectively. The provision of a single second attachment site or a single reactive attachment site on the antigen, thus, ensures a single and uniform type of binding and association, respectively leading to a very highly ordered and repetitive array. For example, if the binding and association, respectively, is effected by way of a lysine- (as the first attachment site) and cysteine- (as a second attachment site) interaction, it is ensured, in accordance with this preferred embodiment of the invention, that only one cysteine residue per antigen, independent whether this cysteine residue is naturally or non-naturally present on the antigen, is capable of binding and associating, respectively, with the VLP and the first attachment site of the core particle, respectively.
- In some embodiments, engineering of a second attachment site onto the antigen require the fusion of an amino acid linker containing an amino acid suitable as second attachment site according to the disclosures of this invention. Therefore, in a preferred embodiment of the present invention, an amino acid linker is bound to the antigen or the antigenic determinant by way of at least one covalent bond. Preferably, the amino acid linker comprises, or alternatively consists of, the second attachment site. In a further preferred embodiment, the amino acid linker comprises a sulfhydryl group or a cysteine residue. In another preferred embodiment, the amino acid linker is cysteine. Some criteria of selection of the amino acid linker as well as further preferred embodiments of the amino acid linker according to the invention have already been mentioned above.
- In another specific embodiment of the invention, the attachment site is selected to be a lysine or cysteine residue that is fused in frame to the HBcAg. In a preferred embodiment, the antigen is fused to the C-terminus of HBcAg via a three leucine linker.
- When an antigen or antigenic determinant is linked to the VLP through a lysine residue, it may be advantageous to either substitute or delete one or more of the naturally resident lysine residues, as well as other lysine residues present in HBcAg variants.
- In many instances, when the naturally resident lysine residues are eliminated, another lysine will be introduced into the HBcAg as an attachment site for an antigen or antigenic determinant. Methods for inserting such a lysine residue are known in the art. Lysine residues may also be added without removing existing lysine residues.
- The C-terminus of the HBcAg has been shown to direct nuclear localization of this protein. (Eckhardt et al.,J. Virol. 65:575-582 (1991)). Further, this region of the protein is also believed to confer upon the HBcAg the ability to bind nucleic acids.
- As indicated, HBcAgs suitable for use in the practice of the present invention also include N-terminal truncation mutants. Suitable truncation mutants include modified HBcAgs where 1, 2, 5, 7, 9, 10, 12, 14, 15, or 17 amino acids have been removed from the N-terminus. However, variants of virus-like particles containing internal deletions within the sequence of the subunit composing the virus-like particle are also suitable in accordance with the present invention, provided their compatibility with the ordered or particulate structure of the virus-like particle. For example, internal deletions within the sequence of the HBcAg are suitable (Preikschat, P., et al.,J. Gen. Virol. 80:1777-1788 (1999)).
- Further HBcAgs suitable for use in the practice of the present invention include N- and C-terminal truncation mutants. Suitable truncation mutants include HBcAgs where 1, 2, 5, 7, 9, 10, 12, 14, 15, and 17 amino acids have been removed from the N-terminus and 1, 5, 10, 15, 20, 25, 30, 34, 35, 36, 37, 38, 39 40, 41, 42 or 48 amino acids have been removed from the C-terminus.
- Vaccine compositions of the invention can comprise mixtures of different HBcAgs. Thus, these vaccine compositions can be composed of HBcAgs which differ in amino acid sequence. For example, vaccine compositions could be prepared comprising a “wild-type” HBcAg and a modified HBcAg in which one or more amino acid residues have been altered (e.g., deleted, inserted or substituted). In most applications, however, only one type of a HBcAg will be used.
- The present invention is applicable to a wide variety of antigens. In a preferred embodiment, the antigen is a protein, polypeptide or peptide. In another embodiment the antigen is DNA. The antigen can also be a lipid, a carbohydrate, or an organic molecule, in particular a small organic molecule such as nicotine.
- Antigens of the invention can be selected from the group consisting of the following: (a) polypeptides suited to induce an immune response against cancer cells; (b) polypeptides suited to induce an immune response against infectious diseases; (c) polypeptides suited to induce an immune response against allergens; (d) polypeptides suited to induce an immune response in farm animals or pets; and (e) fragments (e.g., a domain) of any of the polypeptides set out in (a)-(d).
- Preferred antigens include those from a pathogen (e.g. virus, bacterium, parasite, fungus) and tumors (especially tumor-associated antigens or “tumor markers”). Other preferred antigens are autoantigens.
- In the specific embodiments described in the Examples, the antigen is the peptide p33 derived from lymphocytic choriomeningitis virus (LCMV). The p33 peptide represents one of the best studied CTL epitopes (Pircher et al., “Tolerance induction in double specific T-cell receptor transgenic mice varies with antigen,”Nature 342:559 (1989); Tissot et al., “Characterizing the functionality of recombinant T-cell receptors in vitro: a pMHC tetramer based approach,” J Immunol Methods 236:147 (2000); Bachmann et al., “Four types of Ca2+-signals after stimulation of naive T cells with T cell agonists, partial agonists and antagonists,” Eur. J. Immunol. 27:3414 (1997); Bachmann et al., “Functional maturation of an anti-viral cytotoxic T cell response,” J. Virol. 71:5764 (1997); Bachmann et al., “Peptide induced TCR-down regulation on naive T cell predicts agonist/partial agonist properties and strictly correlates with T cell activation,” Eur. J. Immunol. 27:2195 (1997); Bachmann et al., “Distinct roles for LFA-1 and CD28 during activation of naive T cells: adhesion versus costimulation,” Immunity 7:549 (1997)). p33-specific T cells have been shown to induce lethal diabetic disease in transgenic mice (Ohashi et al., “Ablation of ‘tolerance’ and induction of diabetes by virus infection in viral antigen transgenic mice,” Cell 65:305 (1991)) as well as to be able to prevent growth of tumor cells expressing p33 (Kündig et al., “Fibroblasts act as efficient antigen-presenting cells in lymphoid organs,” Science 268:1343 (1995); Speiser et al., “CTL tumor therapy specific for an endogenous antigen does not cause autoimmune disease,” J. Exp. Med. 186:645 (1997)). This specific epitope, therefore, is particularly well suited to study autoimmunity, tumor immunology as well as viral diseases.
- In one specific embodiment of the invention, the antigen or antigenic determinant is one that is useful for the prevention of infectious disease. Such treatment will be useful to treat a wide variety of infectious diseases affecting a wide range of hosts, e.g., human, cow, sheep, pig, dog, cat, other mammalian species and non-mammalian species as well. Treatable infectious diseases are well known to those skilled in the art, and examples include infections of viral etiology such as HIV, influenza, Herpes, viral hepatitis, Epstein Bar, polio, viral encephalitis, measles, chicken pox, Papilloma virus etc.; or infections of bacterial etiology such as pneumonia, tuberculosis, syphilis, etc.; or infections of parasitic etiology such as malaria, trypanosomiasis, leishmaniasis, trichomoniasis, amoebiasis, etc. Thus, antigens or antigenic determinants selected for the compositions of the invention will be well known to those in the medical art; examples of antigens or antigenic determinants include the following: the HIV antigens gp140 and gp160; the influenza antigens hemagglutinin, M2 protein and neuraminidase, Hepatitis B surface antigen or core and circumsporozoite protein of malaria or fragments thereof.
- As discussed above, antigens include infectious microbes such as viruses, bacteria and fungi and fragments thereof, derived from natural sources or synthetically. Infectious viruses of both human and non-human vertebrates include retroviruses, RNA viruses and DNA viruses. The group of retroviruses includes both simple retroviruses and complex retroviruses. The simple retroviruses include the subgroups of B-type retroviruses, C-type retroviruses and D-type retroviruses. An example of a B-type retrovirus is mouse mammary tumor virus (MMTV). The C-type retroviruses include subgroups C-type group A (including Rous sarcoma virus (RSV), avian leukemia virus (ALV), and avian mycloblastosis virus (AMV)) and C-type group B (including murine leukemia virus (MLV), feline leukemia virus (FeLV), murine sarcoma virus (MSV), gibbon ape leukemia virus (GALV), spleen necrosis virus (SNV), reticuloendotheliosis virus (RV) and simian sarcoma virus (SSV)). The D-type retroviruses include Mason-Pfizer monkey virus (MPMV) and simian retrovirus type 1 (SRV-1). The complex retroviruses include the subgroups of lentiviruses, T-cell leukemia viruses and the foamy viruses. Lentiviruses include HIV-1, but also include HIV-2, SIV, Visna virus, feline immunodeficiency virus (FIV), and equine infectious anemia virus (EIAV). The T-cell leukemia viruses include HTLV-1, HTLV-T1, simian T-cell leukemia virus (STLV), and bovine leukemia virus (BLV). The foamy viruses include human foamy virus (HFV), simian foamy virus (SFV) and bovine foamy virus (BFV).
- Examples of RNA viruses that are antigens in vertebrate animals include, but are not limited to, the following: members of the family Reoviridae, including the genus Orthoreovirus (multiple serotypes of both mammalian and avian retroviruses), the genus Orbivirus (Bluetongue virus, Eugenangee virus, Kemerovo virus, African horse sickness virus, and Colorado Tick Fever virus), the genus Rotavirus (human rotavirus, Nebraska calf diarrhea virus, murine rotavirus, simian rotavirus, bovine or ovine rotavirus, avian rotavirus); the family Picomaviridae, including the genus Enterovirus (poliovirus, Coxsackie virus A and B, enteric cytopathic human orphan (ECHO) viruses, hepatitis A, C, D, E and G viruses, Simian enteroviruses, Murine encephalomyelitis (ME) viruses, Poliovirus muris, Bovine enteroviruses, Porcine enteroviruses, the genus Cardiovirus (Encephalomyocarditis virus (EMC), Mengovirus), the genus Rhinovirus (Human rhinoviruses including at least 113 subtypes; other rhinoviruses), the genus Apthovirus (Foot and Mouth disease (FMDV); the family Calciviridae, including Vesicular exanthema of swine virus, San Miguel sea lion virus, Feline picornavirus and Norwalk virus; the family Togaviridae, including the genus Alphavirus (Eastern equine encephalitis virus, Semliki forest virus, Sindbis virus, Chikungunya virus, O'Nyong-Nyong virus, Ross river virus, Venezuelan equine encephalitis virus, Western equine encephalitis virus), the genus Flavirius (Mosquito borne yellow fever virus, Dengue virus, Japanese encephalitis virus, St. Louis encephalitis virus, Murray Valley encephalitis virus, West Nile virus, Kunjin virus, Central European tick borne virus, Far Eastern tick borne virus, Kyasanur forest virus, Louping III virus, Powassan virus, Omsk hemorrhagic fever virus), the genus Rubivirus (Rubella virus), the genus Pestivirus (Mucosal disease virus, Hog cholera virus, Border disease virus); the family Bunyaviridae, including the genus Bunyvirus (Bunyamwera and related viruses, California encephalitis group viruses), the genus Phlebovirus (Sandfly fever Sicilian virus, Rift Valley fever virus), the genus Nairovirus (Crimean-Congo hemorrhagic fever virus, Nairobi sheep disease virus), and the genus Uukuvirus (Uukuniemi and related viruses); the family Orthomyxoviridae, including the genus Influenza virus (Influenza virus type A, many human subtypes); Swine influenza virus, and Avian and Equine Influenza viruses; influenza type B (many human subtypes), and influenza type C (possible separate genus); the family paramyxoviridae, including the genus Paramyxovirus (Parainfluenza virus type 1, Sendai virus, Hemadsorption virus, Parainfluenza viruses types 2 to 5, Newcastle Disease Virus, Mumps virus), the genus Morbillivirus (Measles virus, subacute sclerosing panencephalitis virus, distemper virus, Rinderpest virus), the genus Pneumovirus (respiratory syncytial virus (RSV), Bovine respiratory syncytial virus and Pneumonia virus of mice); forest virus, Sindbis virus, Chikungunya virus, O'Nyong-Nyong virus, Ross river virus, Venezuelan equine encephalitis virus, Western equine encephalitis virus), the genus Flavirius (Mosquito borne yellow fever virus, Dengue virus, Japanese encephalitis virus, St. Louis encephalitis virus, Murray Valley encephalitis virus, West Nile virus, Kunjin virus, Central European tick borne virus, Far Eastern tick borne virus, Kyasanur forest virus, Louping III virus, Powassan virus, Omsk hemorrhagic fever virus), the genus Rubivirus (Rubella virus), the genus Pestivirus (Mucosal disease virus, Hog cholera virus, Border disease virus); the family Bunyaviridae, including the genus Bunyvirus (Bunyamwera and related viruses, California encephalitis group viruses), the genus Phlebovirus (Sandfly fever Sicilian virus, Rift Valley fever virus), the genus Nairovirus (Crimean-Congo hemorrhagic fever virus, Nairobi sheep disease virus), and the genus Uukuvirus (Uukuniemi and related viruses); the family Orthomyxoviridae, including the genus Influenza virus (Influenza virus type A, many human subtypes); Swine influenza virus, and Avian and Equine Influenza viruses; influenza type B (many human subtypes), and influenza type C (possible separate genus); the family paramyxoviridae, including the genus Paramyxovirus (Parainfluenza virus type 1, Sendai virus, Hemadsorption virus, Parainfluenza viruses types 2 to 5, Newcastle Disease Virus, Mumps virus), the genus Morbillivirus (Measles virus, subacute sclerosing panencephalitis virus, distemper virus, Rinderpest virus), the genus Pneumovirus (respiratory syncytial virus (RSV), Bovine respiratory syncytial virus and Pneumonia virus of mice); the family Rhabdoviridae, including the genus Vesiculovirus (VSV), Chandipura virus, Flanders-Hart Park virus), the genus Lyssavirus (Rabies virus), fish Rhabdoviruses and filoviruses (Marburg virus and Ebola virus); the family Arenaviridae, including Lymphocytic choriomeningitis virus (LCM), Tacaribe virus complex, and Lassa virus; the family Coronoaviridae, including Infectious Bronchitis Virus (IBV), Mouse Hepatitis virus, Human enteric corona virus, and Feline infectious peritonitis (Feline coronavirus).
- Illustrative DNA viruses that are antigens in vertebrate animals include, but are not limited to: the family Poxviridae, including the genus Orthopoxvirus (Variola major, Variola minor, Monkey pox Vaccinia, Cowpox, Buffalopox, Rabbitpox, Ectromelia), the genus Leporipoxvirus (Myxoma, Fibroma), the genus Avipoxvirus (Fowlpox, other avian poxvirus), the genus Capripoxvirus (sheeppox, goatpox), the genus Suipoxvirus (Swinepox), the genus Parapoxvirus (contagious postular dermatitis virus, pseudocowpox, bovine papular stomatitis virus); the family Iridoviridae (African swine fever virus, Frog viruses 2 and 3, Lymphocystis virus of fish); the family Herpesviridae, including the alpha-Herpesviruses (Herpes Simplex Types 1 and 2, Varicella-Zoster, Equine abortion virus, Equine herpes virus 2 and 3, pseudorabies virus, infectious bovine keratoconjunctivitis virus, infectious bovine rhinotracheitis virus, feline rhinotracheitis virus, infectious laryngotracheitis virus) the Beta-herpesviruses (Human cytomegalovirus and cytomegaloviruses of swine, monkeys and rodents); the gamma-herpesviruses (Epstein-Barr virus (EBV), Marek's disease virus, Herpes saimiri, Herpesvirus ateles, Herpesvirus sylvilagus, guinea pig herpes virus, Lucke tumor virus); the family Adenoviridae, including the genus Mastadenovirus (Human subgroups A, B, C, D and E and ungrouped; simian adenoviruses (at least 23 serotypes), infectious canine hepatitis, and adenoviruses of cattle, pigs, sheep, frogs and many other species, the genus Aviadenovirus (Avian adenoviruses); and non-cultivatable adenoviruses; the family Papoviridae, including the genus Papillomavirus (Human papilloma viruses, bovine papilloma viruses, Shope rabbit papilloma virus, and various pathogenic papilloma viruses of other species), the genus Polyomavirus (polyomavirus, Simian vacuolating agent (SV-40), Rabbit vacuolating agent (RKV), K virus, BK virus, JC virus, and other primate polyoma viruses such as Lymphotrophic papilloma virus); the family Parvoviridae including the genus Adeno-associated viruses, the genus Parvovirus (Feline panleukopenia virus, bovine parvovirus, canine parvovirus, Aleutian mink disease virus, etc.). Finally, DNA viruses may include viruses which do not fit into the above families such as Kuru and Creutzfeldt-Jacob disease viruses and chronic infectious neuropathic agents (CHINA virus).
- Each of the foregoing lists is illustrative, and is not intended to be limiting.
- In a specific embodiment of the invention, the antigen comprises one or more cytotoxic T cell epitopes, Th cell epitopes, or a combination of the two epitopes.
- In addition to enhancing an antigen specific immune response in humans, the methods of the preferred embodiments are particularly well suited for treatment of other mammals or other animals, e.g., birds such as hens, chickens, turkeys, ducks, geese, quail and pheasant. Birds are prime targets for many types of infections.
- An example of a common infection in chickens is chicken infectious anemia virus (CIAV). CIAV was first isolated in Japan in 1979 during an investigation of a Marek's disease vaccination break (Yuasa et al.,Avian Dis. 23:366-385 (1979)). Since that time, CIAV has been detected in commercial poultry in all major poultry producing countries (van Bulow et al., pp. 690-699 in “Diseases of Poultry”, 9th edition, Iowa State University Press 1991).
- Vaccination of birds, like other vertebrate animals can be performed at any age. Normally, vaccinations are performed at up to 12 weeks of age for a live microorganism and between 14-18 weeks for an inactivated microorganism or other type of vaccine. For in ovo vaccination, vaccination can be performed in the last quarter of embryo development. The vaccine can be administered subcutaneously, by spray, orally, intraocularly, intratracheally, nasally, in ovo or by other methods described herein.
- Cattle and livestock are also susceptible to infection. Disease which affect these animals can produce severe economic losses, especially amongst cattle. The methods of the invention can be used to protect against infection in livestock, such as cows, horses, pigs, sheep and goats.
- Cows can be infected by bovine viruses. Bovine viral diarrhea virus (BVDV) is a small enveloped positive-stranded RNA virus and is classified, along with hog cholera virus (HOCV) and sheep border disease virus (BDV), in the pestivirus genus. Although Pestiviruses were previously classified in the Togaviridae family, some studies have suggested their reclassification within the Flaviviridae family along with the flavivirus and hepatitis C virus (HCV) groups.
- Equine herpesviruses (EHV) comprise a group of antigenically distinct biological agents which cause a variety of infections in horses ranging from subclinical to fatal disease. These include Equine herpesvirus-1 (EHV-1), a ubiquitous pathogen in horses. EHV-1 is associated with epidemics of abortion, respiratory tract disease, and central nervous system disorders. Other EHV's include EHV-2, or equine cytomegalovirus, EHV-3, equine coital exanthema virus, and EHV-4, previously classified as EHV-1
subtype 2. - Sheep and goats can be infected by a variety of dangerous microorganisms including visna-maedi.
- Primates such as monkeys, apes and macaques can be infected by simian immunodeficiency virus. Inactivated cell-virus and cell-free whole simian immunodeficiency vaccines have been reported to afford protection in macaques (Stott et al.,Lancet 36:1538-1541 (1990); Desrosiers et al., PNAS USA 86:6353-6357 (1989); Murphey-Corb et al., Science 246:1293-1297 (1989); and Carlson et al., AIDS Res. Human Retroviruses 6:1239-1246 (1990)). A recombinant HIV gp120 vaccine has been reported to afford protection in chimpanzees (Berman et al., Nature 345:622-625 (1990)).
- Cats, both domestic and wild, are susceptible to infection with a variety of microorganisms. For instance, feline infectious peritonitis is a disease which occurs in both domestic and wild cats, such as lions, leopards, cheetahs, and jaguars. When it is desirable to prevent infection with this and other types of pathogenic organisms in cats, the methods of the invention can be used to vaccinate cats to prevent them against infection.
- Domestic cats may become infected with several retroviruses, including but not limited to feline leukemia virus (FeLV), feline sarcoma virus (FeSV), endogenous type C oncomavirus (RD-114), and feline syncytia-forming virus (FeSFV). The discovery of feline T-lymphotropic lentivirus (also referred to as feline immunodeficiency) was first reported in Pedersen et al.,Science 235:790-793 (1987). Feline infectious peritonitis (FIP) is a sporadic disease occurring unpredictably in domestic and wild Felidae. While FIP is primarily a disease of domestic cats, it has been diagnosed in lions, mountain lions, leopards, cheetahs, and the jaguar. Smaller wild cats that have been afflicted with FIP include the lynx and caracal, sand cat and pallas cat.
- Viral and bacterial diseases in fin-fish, shellfish or other aquatic life forms pose a serious problem for the aquaculture industry. Owing to the high density of animals in the hatchery tanks or enclosed marine farming areas, infectious diseases may eradicate a large proportion of the stock in, for example, a fin-fish, shellfish, or other aquatic life forms facility. Prevention of disease is a more desired remedy to these threats to fish than intervention once the disease is in progress. Vaccination of fish is the only preventative method which may offer long-term protection through immunity. Nucleic acid based vaccinations of fish are described, for example, in U.S. Pat. No. 5,780,448.
- The fish immune system has many features similar to the mammalian immune system, such as the presence of B cells, T cells, lymphokines, complement, and immunoglobulins. Fish have lymphocyte subclasses with roles that appear similar in many respects to those of the B and T cells of mammals. Vaccines can be administered orally or by immersion or injection.
- Aquaculture species include but are not limited to fin-fish, shellfish, and other aquatic animals. Fin-fish include all vertebrate fish, which may be bony or cartilaginous fish, such as, for example, salmonids, carp, catfish, yellowtail, seabream and seabass. Salmonids are a family of fin-fish which include trout (including rainbow trout), salmon and Arctic char. Examples of shellfish include, but are not limited to, clams, lobster, shrimp, crab and oysters. Other cultured aquatic animals include, but are not limited to, eels, squid and octopi.
- Polypeptides of viral aquaculture pathogens include but are not limited to glycoprotein or nucleoprotein of viral hemorrhagic septicemia virus (VHSV); G or N proteins of infectious hematopoietic necrosis virus (IHNV); VP1, VP2, VP3 or N structural proteins of infectious pancreatic necrosis virus (IPNV); G protein of spring viremia of carp (SVC); and a membrane-associated protein, tegumin or capsid protein or glycoprotein of channel catfish virus (CCV).
- Polypeptides of bacterial pathogens include but are not limited to an iron-regulated outer membrane protein, (IROMP), an outer membrane protein (OMP), and an A-protein of Aeromonis salmonicida which causes furunculosis, p57 protein of Renibacterium salmoninarum which causes bacterial kidney disease (BKD), major surface associated antigen (msa), a surface expressed cytotoxin (mpr), a surface expressed hemolysin (ish), and a flagellar antigen of Yersiniosis; an extracellular protein (ECP), an iron-regulated outer membrane protein (IROMP), and a structural protein of Pasteurellosis; an OMP and a flagellar protein ofVibrosis anguillarum and V. ordalii; a flagellar protein, an OMP protein, aroA, and purA of Edwardsiellosis ictaluri and E. tarda; and surface antigen of Ichthyophthirius; and a structural and regulatory protein of Cytophaga columnari; and a structural and regulatory protein of Rickettsia.
- Polypeptides of a parasitic pathogen include but are not limited to the surface antigens of Ichthyophthirius.
- In another aspect of the invention, there is provided vaccine compositions suitable for use in methods for preventing and/or attenuating diseases or conditions which are caused or exacerbated by “self” gene products (e.g., tumor necrosis factors). Thus, vaccine compositions of the invention include compositions which lead to the production of antibodies that prevent and/or attenuate diseases or conditions caused or exacerbated by “self” gene products. Examples of such diseases or conditions include graft versus host disease, IgE-mediated allergic reactions, anaphylaxis, adult respiratory distress syndrome, Crohn's disease, allergic asthma, acute lymphoblastic leukemia (ALL), non-Hodgkin's lymphoma (NHL), Graves' disease, systemic lupus erythematosus (SLE), inflammatory autoimmune diseases, myasthenia gravis, immunoproliferative disease lymphadenopathy (IPL), angioimmunoproliferative lymphadenopathy (AIL), immunoblastive lymphadenopathy (IBL), rheumatoid arthritis, diabetes, prion diseases, multiple sclerosis, Alzheimer disease and osteoporosis.
- In related specific embodiments, compositions of the invention are an immunotherapeutic that can be used for the treatment and/or prevention of allergies, cancer or drug addiction.
- The selection of antigens or antigenic determinants for the preparation of compositions and for use in methods of treatment for allergies would be known to those skilled in the medical arts treating such disorders. Representative examples of such antigens or antigenic determinants include the following: bee venom phospholipase A2, Bet v I (birch pollen allergen), 5 Dol m V (white-faced hornet venom allergen), and Der p I (House dust mite allergen), as well as fragments of each which can be used to elicit immunological responses.
- The selection of antigens or antigenic determinants for compositions and methods of treatment for cancer would be known to those skilled in the medical arts treating such disorders (see Renkvist et al.,Cancer. Immunol. Immunother. 50:3-15 (2001) which is incorporated by reference), and such antigens or antigenic determinants are included within the scope of the present invention. Representative examples of such types of antigens or antigenic determinants include the following: Her2 (breast cancer); GD2 (neuroblastoma); EGF-R (malignant glioblastoma); CEA (medullary thyroid cancer); CD52 (leukemia); human melanoma protein gp100; human melanoma protein gp100 epitopes such as amino acids 154-162 (sequence: KTWGQYWQV), 209-217 (ITDQVPFSV), 280-288 (YLEPGPVTA), 457-466 (LLDGTATLRL) and 476-485 (VLYRYGSFSV); human melanoma protein melan-A/MART-1; human melanoma protein melan-A/MART-1 epitopes such as amino acids 27-35 (AAGIGILTV) and 32-40 (ILTVILGVL); tyrosinase and tyrosinase related proteins (e.g., TRP-1 and TRP-2); tyrosinase epitopes such as amino acids 1-9 (MLLAVLYCL) and 369-377 (YMDGTMSQV); NA17-A nt protein; NA17-A nt protein epitopes such as amino acids 38-64 (VLPDVFIRC); MAGE-3 protein; MAGE-3 protein epitopes such as amino acids 271-279 (FLWGPRALV); other human tumors antigens, e.g. CEA epitopes such as amino acids 571-579 (YLSGANLNL); p53 protein; p53 protein epitopes such as amino acids 65-73 (RMPEAAPPV), 149-157 (STPPPGTRV) and 264-272 (LLGRNSFEV); Her2/neu epitopes such as amino acids 369-377 (KIFGSLAFL) and 654-662 (IISAVVGIL); NY-ESO-1 peptides 157-165 and 157-167, 159-167; HPV16 E7 protein; HPV16 E7 protein epitopes such as amino acids 86-93 (TLGIVCPI); as well as fragments of each which can be used to elicit immunological responses.
- The selection of antigens or antigenic determinants for compositions and methods of treatment for drug addiction, in particular recreational drug addiction, would be known to those skilled in the medical arts treating such disorders. Representative examples of such antigens or antigenic determinants include, for example, opioids and morphine derivatives such as codeine, fentanyl, heroin, morphium and opium; stimulants such as amphetamine, cocaine, MDMA (methylenedioxymethamphetamine), methamphetamine, methylphenidate and nicotine; hallucinogens such as LSD, mescaline and psilocybin; as well as cannabinoids such as hashish and marijuana.
- The selection of antigens or antigenic determinants for compositions and methods of treatment for other diseases or conditions associated with self antigens would be also known to those skilled in the medical arts treating such disorders. Representative examples of such antigens or antigenic determinants are, for example, lymphotoxins (e.g. Lymphotoxin α (LT α), Lymphotoxin β (LT β)), and lymphotoxin receptors, Receptor activator of nuclear factor kappaB ligand (RANKL), vascular endothelial growth factor (VEGF) and vascular endothelial growth factor receptor (VEGF-R),
Interleukin 17 and amyloid beta peptide (Aβ1-42), TN-Fα, MIF, MCP-1, SDF-1, Rank-L, M-CSF, Angiotensin II, Endoglin, Eotaxin, Grehlin, BLC, CCL21, IL-13, IL-17, IL-5, IL-8, IL-15, Bradykinin, Resistin, LHRH, GHRH, GIH, CRH, TRH and Gastrin, as well as fragments of each which can be used to elicit immunological responses. - In a particular embodiment of the invention, the antigen or antigenic determinant is selected from the group consisting of: (a) a recombinant polypeptide of HIV; (b) a recombinant polypeptide of Influenza virus (e.g., an Influenza virus M2 polypeptide or a fragment thereof); (c) a recombinant polypeptide of Hepatitis C virus; (d) a recombinant polypeptide of Hepatitis B virus (e) a recombinant polypeptide of Toxoplasma; (f) a recombinant polypeptide ofPlasmodium falciparum; (g) a recombinant polypeptide of Plasmodium vivax; (h) a recombinant polypeptide of Plasmodium ovale; (i) a recombinant polypeptide of Plasmodium malariae; (j) a recombinant polypeptide of breast cancer cells; (k) a recombinant polypeptide of kidney cancer cells; (l) a recombinant polypeptide of prostate cancer cells; (m) a recombinant polypeptide of skin cancer cells; (n) a recombinant polypeptide of brain cancer cells; (o) a recombinant polypeptide of leukemia cells; (p) a recombinant profiling; (q) a recombinant polypeptide of bee sting allergy; (r) a recombinant polypeptide of nut allergy; (s) a recombinant polypeptide of pollen; (t) a recombinant polypeptide of house-dust; (u) a recombinant polypeptide of cat or cat hair allergy; (v) a recombinant protein of food allergies; (w) a recombinant protein of asthma; (x) a recombinant protein of Chlamydia; and (y) a fragment of any of the proteins set out in (a)-(x).
- In another embodiment of the present invention, the antigen, being coupled, fused or otherwise attached to the virus-like particle, is a T cell epitope, either a cytotoxic or a Th cell epitope. In a further preferred embodiment, the antigen is a combination of at least two, preferably different, epitopes, wherein the at least two epitopes are linked directly or by way of a linking sequence. These epitopes are preferably selected from the group consisting of cytotoxic and Th cell epitopes.
- It should also be understood that a mosaic virus-like particle, e.g. a virus-like particle composed of subunits attached to different antigens and epitopes, respectively, is within the scope of the present invention. Such a composition of the present invention can be, for example, obtained by transformingE. coli with two compatible plasmids encoding the subunits composing the virus-like particle fused to different antigens and epitopes, respectively. In this instance, the mosaic virus-like particle is assembled either directly in the cell or after cell lysis. Moreover, such an inventive composition can also be obtained by attaching a mixture of different antigens and epitopes, respectively, to the isolated virus-like particle.
- The antigen of the present invention, and in particular the indicated epitope or epitopes, can be synthesized or recombinantly expressed and coupled to the virus-like particle, or fused to the virus-like particle using recombinant DNA techniques. Exemplary procedures describing the attachment of antigens to virus-like particles are disclosed in WO 00/32227, in WO 01/85208 and in WO 02/056905, the disclosures of which are herewith incorporated by reference in its entirety
- The invention also provides a method of producing a composition for enhancing an immune response in an animal comprising a VLP and an immunostimulatory substance, preferably an unmethylated CpG-containing oligonucleotide bound to the VLP which comprises incubating the VLP with the immunostimulatory substance and oligonucleotide, respectively, adding RNase and purifying said composition. In an equally preferred embodiment, the method comprises incubating the VLP with RNase, adding the immunostimulatory substance and oligonucleotide, respectively, and purifying the composition. In one embodiment, the VLP is produced in a bacterial expression system. In another embodiment, the RNase is RNase A.
- The invention further provides a method of producing a composition for enhancing an immune response in an animal comprising a VLP bound to an immunostimulatory substance, preferably to an unmethylated CpG-containing oligonucleotide which comprises disassembling the VLP, adding the immunostimulatory substance and oligonucleotide, respectively, and reassembling the VLP. The method can further comprise removing nucleic acids of the disassembled VLP and/or purifying the composition after reassembly.
- The invention also provides vaccine compositions which can be used for preventing and/or attenuating diseases or conditions. Vaccine compositions of the invention comprise, or alternatively consist of, an immunologically effective amount of the inventive immune enhancing composition together with a pharmaceutically acceptable diluent, carrier or excipient. The vaccine can also optionally comprise an adjuvant.
- The invention further provides vaccination methods for preventing and/or attenuating diseases or conditions in animals. In one embodiment, the invention provides vaccines for the prevention of infectious diseases in a wide range of animal species, particularly mammalian species such as human, monkey, cow, dog, cat, horse, pig, etc. Vaccines can be designed to treat infections of viral etiology such as HIV, influenza, Herpes, viral hepatitis, Epstein Bar, polio, viral encephalitis, measles, chicken pox, etc.; or infections of bacterial etiology such as pneumonia, tuberculosis, syphilis, etc.; or infections of parasitic etiology such as malaria, trypanosomiasis, leishmaniasis, trichomoniasis, amoebiasis, etc.
- In another embodiment, the invention provides vaccines for the prevention of cancer in a wide range of species, particularly mammalian species such as human, monkey, cow, dog, cat, horse, pig, etc. Vaccines can be designed to treat all types of cancer including, but not limited to, lymphomas, carcinomas, sarcomas and melanomas.
- As would be understood by one of ordinary skill in the art, when compositions of the invention are administered to an animal, they can be in a composition which contains salts, buffers, adjuvants or other substances which are desirable for improving the efficacy of the composition. Examples of materials suitable for use in preparing pharmaceutical compositions are provided in numerous sources including REMINGTON'S PHARMACEUTICAL SCIENCES (Osol, A, ed., Mack Publishing Co., (1990)).
- Various adjuvants can be used to increase the immunological response, depending on the host species, and include but are not limited to, Freund's (complete and incomplete), mineral gels such as aluminum hydroxide, surface active substances such as lysolecithin, pluronic polyols, polyanions, peptides, oil emulsions, keyhole limpet hemocyanins, dinitrophenol, and potentially useful human adjuvants such as BCG (bacille Calmette-Guerin) andCorynebacterium parvum. Such adjuvants are also well known in the art. Further adjuvants that can be administered with the compositions of the invention include, but are not limited to, Monophosphoryl lipid immunomodulator, AdjuVax 100a, QS-21, QS-18, CRL1005, Aluminum salts, MF-59, and Virosomal adjuvant technology. The adjuvants can also comprise a mixture of these substances.
- Compositions of the invention are said to be “pharmacologically acceptable” if their administration can be tolerated by a recipient individual. Further, the compositions of the invention will be administered in a “therapeutically effective amount” (i.e., an amount that produces a desired physiological effect).
- The compositions of the present invention can be administered by various methods known in the art. The particular mode selected will depend of course, upon the particular composition selected, the severity of the condition being treated and the dosage required for therapeutic efficacy. The methods of the invention, generally speaking, can be practiced using any mode of administration that is medically acceptable, meaning any mode that produces effective levels of the active compounds without causing clinically unacceptable adverse effects. Such modes of administration include oral, rectal, parenteral, intracistemal, intravaginal, intraperitoneal, topical (as by powders, ointments, drops or transdermal patch), bucal, or as an oral or nasal spray. The term “parenteral” as used herein refers to modes of administration which include intravenous, intramuscular, intraperitoneal, intrastemal, subcutaneous and intraarticular injection and infusion. The composition of the invention can also be injected directly in a lymph node.
- Components of compositions for administration include sterile aqueous (e.g., physiological saline) or non-aqueous solutions and suspensions. Examples of non-aqueous solvents are propylene glycol, polyethylene glycol, vegetable oils such as olive oil, and injectable organic esters such as ethyl oleate. Carriers or occlusive dressings can be used to increase skin permeability and enhance antigen absorption.
- Combinations can be administered either concomitantly, e.g., as an admixture, separately but simultaneously or concurrently; or sequentially. This includes presentations in which the combined agents are administered together as a therapeutic mixture, and also procedures in which the combined agents are administered separately but simultaneously, e.g., as through separate intravenous lines into the same individual. Administration “in combination” further includes the separate administration of one of the compounds or agents given first, followed by the second.
- Dosage levels depend on the mode of administration, the nature of the subject, and the quality of the carrier/adjuvant formulation. Typical amounts are in the range of about 0.1 μg to about 20 mg per subject. Preferred amounts are at least about 1 μg to about 100 μg per subject. Multiple administration to immunize the subject is preferred, and protocols are those standard in the art adapted to the subject in question.
- The compositions can conveniently be presented in unit dosage form and can be prepared by any of the methods well-known in the art of pharmacy. Methods include the step of bringing the compositions of the invention into association with a carrier which constitutes one or more accessory ingredients. In general, the compositions are prepared by uniformly and intimately bringing the compositions of the invention into association with a liquid carrier, a finely divided solid carrier, or both, and then, if necessary, shaping the product.
- Compositions suitable for oral administration can be presented as discrete units, such as capsules, tablets or lozenges, each containing a predetermined amount of the compositions of the invention. Other compositions include suspensions in aqueous liquids or non-aqueous liquids such as a syrup, an elixir or an emulsion.
- Other delivery systems can include time-release, delayed release or sustained release delivery systems. Such systems can avoid repeated administrations of the compositions of the invention described above, increasing convenience to the subject and the physician. Many types of release delivery systems are available and known to those of ordinary skill in the art.
- Other embodiments of the invention include processes for the production of the compositions of the invention and methods of medical treatment for cancer and allergies using said compositions.
- Further aspects and embodiments of the present invention will become apparent in the following examples and the appended claims.
- The following examples are illustrative only and are not intended to limit the scope of the invention as defined by the appended claims. It will be apparent to those skilled in the art that various modifications and variations can be made in the methods of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
- All patents and publications referred to herein are expressly incorporated by reference in their entirety.
- The DNA sequence of HBcAg containing peptide p33 from LCMV is given in FIG. 1B. The p33-HBcAg VLPs (p33-VLPs) were generated as follows: Hepatitis B clone pEco63 containing the complete viral genome of Hepatitis B virus was purchased from ATCC. The gene encoding HBcAg was introduced into the EcoRI/HindIII restriction sites of expression vector pkk223.3 (Pharmacia) under the control of a strong tac promoter. The p33 peptide (KAVYNFATM) derived from lymphocytic choriomeningitis virus (LCMV) was fused to the C-terminus of HBcAg (1-185) via a three leucine-linker by standard PCR methods. A clone ofE. coli K802 selected for good expression was transfected with the plasmid, and cells were grown and resuspended in 5 ml lysis buffer (10 mM Na2HPO4, 30 mM NaCl, 10 mM EDTA, 0.25% Tween-20, pH 7.0). 200 μl of lysozyme solution (20 mg/ml) was added. After sonication, 4 μl Benzonase and 10 mM MgCl2 was added and the suspension was incubation for 30 minutes at RT, centrifuged for 15 minutes at 15,000 rpm at 4° C. and the supernatant was retained.
- Next, 20% (w/v) (0.2 g/ml lysate) ammonium sulfate was added to the supernatant. After incubation for 30 minutes on ice and centrifugation for 15 minutes at 20,000 rpm at 4° C. the supernatant was discarded and the pellet resuspended in 2-3 ml PBS. 20 ml of the PBS-solution was loaded onto a Sephacryl S-400 gel filtration column (Amersham Pharmacia Biotechnology AG), fractions were loaded onto a SDS-Page gel and fractions with purified p33-VLP capsids were pooled. Pooled fractions were loaded onto a Hydroxyappatite column. Flow through (which contains purified p33-VLP capsids) was collected (FIG. 2B). Electron microscopy was performed according to standard protocols. A representative example is shown in FIG. 2A.
- Recombinant p33-VLPs were run on a native agarose (1%) gel electrophoresis and stained with ethidium bromide or Coomassie blue for the detection of RNA/DNA or protein (FIG. 3). Bacterial produced VLPs contain high levels of single stranded RNA, which is presumably binding to the arginine repeats appearing near the C-terminus of the HBcAg protein and being geographically located inside the VLPs as shown by X-ray crystallography. The contaminating RNA can be easily digested and so eliminated by incubating the VLPs with RNase A. The highly active RNase A enzyme has a molecular weight of about 14 kDa and is presumably small enough to enter the VLPs to eliminate the undesired ribonucleic acids.
- The recombinant p33-VLPs were supplemented with CpG-oligonucleotides (FIG. 1A) before digestion with RNase A. As shown in FIG. 4 the presence of CpG-oligonucleotides preserved the capsid structure as shown by similar migration compared to untreated p33-VLPs. The CpG-oligonucleotide-containing VLPs were purified from unbound oligonucleotides via dialysis (4500-fold dilution in PBS for 24 hours using a 300 kDa MWCO dialysis membrane) (FIG. 5).
- The p33-VLPs (containing bacterial single-stranded RNA) were first incubated with RNase A to remove the RNA and in a second step the immunostimulating CpG-oligonucleotides (with normal phosphodiester bonds but also with phosphorothioate modification of the phosphate backbone) was supplemented to the samples (FIG. 6). This experiment clearly shows that the CpG-oligonucleotides are not absolutely required simultaneously during the RNA degradation reaction but can be added at a later time.
- Mice were subcutaneously primed with 100 μg CpG-oligonucleotide containing p33-VLPs. Before immunization, p33-VLP preparations were extensively purified from unbound CpG-oligonucleotides via dialysis (see Example 2 and FIG. 5). As controls mice were subcutaneously primed with 100 μg p33-VLP alone, mixed with 20 nmol CpG-oligonucleotide, with 20 nmol CpG-oligonucleotide alone or left untreated. Twenty-one days later, mice were challenged with LCMV (200 pfu, intravenously) and viral titers were assessed in the
spleens 5 days later as described in Bachmann, M. F., “Evaluation of lymphocytic choriomeningitis virus-specific cytotoxic T cell responses,” in Immunology Methods Manual, Lefkowitz, I., ed., Academic Press Ltd., New York, N.Y. (1997) p. 1921. The results are shown in FIGS. 7, 8 and 9. - BK virus (BKV) is a non-enveloped double stranded DNA virus belonging to the polyoma virus subfamily of the papovaviridae. VP1 is the major capsid protein. VP1 has 362 amino acids (FIG. 10) and is 42 kDa in size. When produced inE. coli, insect cells or yeast VP1 spontaneously forms capsid structures (Salunke D. M., et al., Cell 46(6):895-904 (1986); Sasnauskas, K., et al., Biol. Chem. 380(3):381-6 (1999); Sasnauskas, K., et al., 3rd International Workshop “Virus-like particles as vaccines” Berlin, September 26-29 (2001); Touze, A., et al., J Gen Virol. 82(Pt 12):3005-9 (2001). The capsid is organized in 72 VP1 pentamers forming an icosahedral structure. The capsids have a diameter of approximately 45 nm.
- VLPs produced in yeast contain small amounts of RNA which can be easily digested and so eliminated by incubating the VLPs with RNase A. The highly active RNase A enzyme has a molecular weight of about 14 kDa and is small enough to enter the VLPs to eliminate the undesired ribonucleic acids. Recombinantly produced BKV VLPs were concentrated to 1 mg/ml in PBS buffer pH 7.2 and incubated in the absence or presence of RNase A (200 μg/ml, Roche Diagnostics Ltd, Switzerland) for 3 h at 37° C. After RNase A digestion BKV VLPs were supplemented with 75 nmol/ml fluorescein labeled phosphorothioate CpG-FAM oligonucleotide and incubated for 3 h at 37° C. Subsequently BKV VLPs were subjected to DNaseI digestion for 3 h at 37° C. (40 u/ml AMPD1, Sigma, Division of Fluka AG, Switzerland) or loaded without DNaseI digestion. The samples were complemented with 6-fold concentrated DNA-loading buffer (10 mM Tris pH 7.5, 10% v/v glycerol, 0.4% orange G) and run for 1 h at 65 volts in a 0.8% native tris-acetate pH 7.5 agarose gel.
- FIG. 12 shows BKV VLPs in a native 0.8% agarose gel electrophoresis after control incubation or after digestion with RNase A and subsequent incubation with fluorescent CpG-FAM oligonucleotides (oligonucleotide from FIG. 1A with a 5′-fluorescein-label) upon staining with ethidium bromide or without ethidium bromide staining. In the presence of ethidium bromide nucleic acids are detected, while in its absence UV excitation leads to fluorescence of the fluorescein-label in the CpG-FAM.
- The RNase A digestion leads to a change in migration of the VLP, visible on Coomassie stained agarose gel, presumably due to the lack of negative charges from the RNA (FIGS. 13 and 14). Addition of CpG-oligonucleotide restores the migration of BKV VLPs and results in a fluorescent band with the same migration as the RNA band present in untreated VLPs. This clearly shows that CpG-FAM oligonucleotides have been packaged into VLPs.
- To introduce double stranded (ds) nucleotide sequences, the RNase A treated recombinant BKV VLPs (Example 6) were supplemented with 50 μg/ml (ds) DNA fragments (246 bp in length, FIG. 11) and incubated for 3 h at 37° C. The samples were complemented with 6-fold concentrated DNA-loading buffer (10 mM Tris pH 8.0, 10% v/v glycerol, 0.4% orange G) and run for 1 h at 65 volts in a 0.8% native tris-acetate pH 8.0 agarose gel.
- FIG. 13 shows BKV VLPs (15 μg) in a native 0.8% agarose gel electrophoresis after control incubation or after digestion with RNase A and subsequent incubation with (ds) DNA upon staining with ethidium bromide or Coomassie Blue in order to assess the presence of RNA/DNA or protein. Packaged DNA molecules are visible in the presence of ethidium bromide as a band with the same migration as the VLP band visualized with Coomassie Blue.
- Addition of (ds) DNA restores the migration of BKV VLPs and results in a DNA band with the same migration as the Coomassie Blue stained VLPs. This clearly shows that (ds) DNA has been packaged into BKV VLPs.
- To introduce immunostimulatory CpG-oligonucleotides, the RNase A treated recombinant BKV VLPs (Example 6) were supplemented with 150 nmol/ml CpG-oligonucleotides with phosphodiester backbone or with phosphorothioate backbone and incubated for 3 h at 37° C. VLP preparations for mouse immunization were extensively dialysed (10,000-fold diluted) for 24 h against PBS pH 7.2 with a 300 kDa MWCO dialysis membrane (Spectrum Medical industries Inc., Houston, USA) to eliminate RNase A and the excess of CpG-oligonucleotides. The samples were complemented with 6-fold concentrated DNA-loading buffer (10 mM Tris pH 7.5, 10% v/v glycerol, 0.4% orange G) and run for 1 h at 65 volts in a 0.8% native tris-acetate pH 7.5 agarose gel.
- FIG. 14 shows BKV VLPs (15 μg) in a native 0.8% agarose gel electrophoresis after control incubation or after digestion with RNase A and subsequent incubation with CpG-oligonucleotides (with phosphodiester- or with phosphorothioate backbone) upon staining with ethidium bromide (A) or Coomassie Blue (B) in order to assess the presence of RNA/DNA or protein and the reduction of unbound CpG-oligonucleotides after dialysis. Unbound CpG-oligonucleotides are visible as a low molecular weight ethidium bromide stained band.
- Addition of CpG-oligonucleotides restores the migration of BKV VLPs and results in a DNA band with the same migration as the Coomassie Blue stained VLPs. This clearly shows that CpG-oligonucleotides are packaged into BKV VLPs.
- Female BALB/c mice (three mice per group) were subcutaneously injected with 10 μg BKV VLPs containing phosphorothioate CpG-oligonucleotide (FIG. 1A). As controls mice were subcutaneously injected with either 10 μg of RNase treated BKV VLPs alone or BKV VLPs mixed with 0.3 nmol or 20 nmol phosphorothioate CpG-oligonucleotides in 200 μl PBS pH 7.2 or were left untreated. BKV VLPs were prepared as described in Example 8 and before immunization extensively purified from unbound CpG-oligonucleotide by dialysis. On
day 14 after immunization blood was taken and IgG1 and IgG2a antibody response to BKV VLPs was determined. - FIG. 15 shows IgG1 and IgG2a antibody response to BKV VLPs on
day 14 after immunization. Immunization with RNase A treated BKV VLPs containing phosphorothioate CpG-oligonucleotides results in a decreased IgG1 and an increased anti-BKV VLP IgG2a titer as compared to immunization with the same amount (0.3 nmol) of CpG-oligonucleotides mixed with BKV VLPs or BKV VLPs alone. Mice immunized with BKV VLPs mixed with 20 nmol phosphorothioate CpG-oligonucleotides show very low IgG1 and high IgG2a titers. The decrease in IgG1 titer and the increase in IgG2a titer as compared to controls demonstrates a Th1 cell directed immune response induced by phosphorothioate CpG-oligonucleotides packaged in BKV VLPs. FIG. 15 clearly demonstrates the higher potency of BKV VLPs containing CpG-oligonucleotides packaged within the particles as compared to BKV VLPs simply mixed with CpG-oligonucleotides. - The p33-VLPs preparations (containing bacterial RNA) (EXAMPLE 1) were first incubated with RNaseA to remove the RNA and in a second step the linear dsDNA (350 bp long) was supplemented to the samples (FIG. 16). The migration of the p33-VLPs packaged with the dsDNA was similar to the one of p33-VLP containing RNA. This experiment shows that linear dsDNA of at least 350 base pairs in length can be packaged into the virus-like particles.
- HBcAg VLPs, when produced inE. coli by expressing the Hepatitis B core antigen fusion protein HBc33 (Example 1) or the fusion protein to the peptide P1A (HBcP1A), contain RNA which can be digested and so eliminated by incubating the VLPs with RNase A.
- The gene P1A codes for a protein that is expressed by the mastocytoma tumor cell line P815. The dominant CTL epitope, termed P1A peptide, binds to MHC class I (Ld) and the complex is recognized by specific CTL clones (Brandle et al., 1998, Eur. J. Immunol. 28: 4010-4019). Fusion of peptide P1A-1 (LPYLGWLVF) to the C-terminus of HBcAg (aa 185, see Example 1) was performed by PCR using appropriate primers using standard molecular biology techniques. A three leucine linker was cloned between the HBcAg and the peptide sequence. Expression was performed as described in Example 1. The fusion protein of HBcAg with P1A, termed HBcP1A, formed capsids when expressed inE. coli which could be purified similar to the procedure described in Example 1.
- Enzymatic RNA hydrolysis: Recombinantly produced HBcAg-p33 (HBc33) and HBcAg-P1A (HBcP1A) VLPs at a concentration of 1.0 mg/ml in 1 x PBS buffer (KCl 0.2g/L, KH2PO4 0.2g/L, NaCl 8 g/L, Na2HPO4 1.15 g/L) pH 7.4, were incubated in the presence of 300 μg/ml RNase A (Qiagen AG, Switzerland) for 3 h at 37° C. in a thermomixer at 650 rpm.
- Packaging of immunostimulatory nucleic acids: After RNA digestion with RNAse A HBcAg-p33 VLPs were supplemented with 130 nmol/ml CpG-oligonucleotides B-CpG, NKCpG, G10-PO (Table I). Similarly, the 150mer single-stranded Cyl50-1 and 253mer double stranded dsCyCpG-253, both containing multiple copies of CpG motifs, were added at 130 nmol/ml or 1.2 nmol/ml, respectively, and incubated in a thermomixer for 3 h at 37° C. Double stranded CyCpG-253 DNA was produced by cloning a double stranded multimer of CyCpG into the EcoRV site of pBluescript KS-. The resulting plasmid, produced inE. coli XL1-blue and isolated using the Qiagen Endofree plasmid Giga Kit, was digested with restriction endonucleases XhoI and XbaI and resulting restriction products were separated by agarose electrophoresis. The 253 bp insert was isolated by electro-elution and ethanol precipitation. Sequence was verified by sequencing of both strands.
TABLE I Sequences of immunostimulatory nucleic acids used in the Examples. Small letters indicate deoxynucleotides connected via phosphorothioate bonds while larger letters indicate deoxynucleotides connected via phosphodiester bonds CyCpGpt tccatgacgttcctgaataat CyCpG TCCATGACGTTCCTGAATAAT B-CpGpt tccatgacgttcctgacgtt B-CpG TCCATGACGTTCCTGACGTT NKCpGpt ggGGTCAACGTTGAggggg NKCpG GGGGTCAACGTTGAGGGGG CyCpG- attattcaggaacgtcatgga rev-pt g10gacga- GGGGGGGGGGGACGATCGTCGGGGGGGGGG PO(G10-PO) g10gacga- gggggggggggacgatcgtcgggggggggg PS(G10-PS) (CpG) CGCGCGCGCGCGCGCGCGCGCGCGCGCGCGCGCG 20 OpA CGCGAAATGCA TGTCAAAGACAGCAT Cy(CpG)20 TCCATGACGTTCCTGAATAATCGCGCGCGCGCGC GCGCGCGCGCG CGCGCGCGCGCGCG Cy(CpG)20- TCCATGACGTTCCTGAATAATCGCGCGCGCGCGC OpA GCGCGCGCGCG CGCGCGCGCGCGCGAAATGCATGTCAAAGACAGC CyOpA TCCATGACGTTCCTGAATAATAAATGCATGTCAA ACAGCAT CyCyCy TCCATGACGTTCCTGAATAATTCCATGACGTTCC AATAATTCCAT GACGTTCCTGAATAAT Cy150-1 TCCATGACGTTCCTGAATAATTCCATGACGTTCC AATAATTCCAT GACGTTCCTGAATAATTGGATGACGTTGGTGAAT TTCCATGACGT TCCTGAATAATTCCATGACGTTCCTGAATAATTC TGACGTTCCTG AATAATTCC dsCyCpG- CTAGAACTAGTGGATCCCCCGGGCTCCAGGAATT 253 (comple- ATTCATGACTT mentary CCTGAATAATTCCATGACGTTGGTGAATAATTCC strand GACGTTCCTGA shown) ATAATTCCATGACGTTCCTGAATAATTCCATGAC TCCTGAATAAT TCCATGACGTTCCTGAATAATTCCATGACGTTCC AATAATTCCAT GACGTTCCTGAATAATTCCATGACGTTCCTGAAA TCCAATCAAGC TTATCGATACCGTCGACC - DNAse I treatment: Packaged HBcAg-p33 VLPs were subsequently subjected to DNaseI digestion (5 U/ml) for 3 h at 37° C. (DNaseI, RNase free Fluka AG, Switzerland) and were extensively dialysed (2× against 200-fold volume) for 24 h against PBS pH 7.4 with a 300 kDa MWCO dialysis membrane (Spectrum Medical industries Inc., Houston, USA) to eliminate RNAse A and the excess of CpG-oligonucleotides.
- Benzonase treatment: Since some single stranded oligodeoxynucleotides were partially resistant to DNaseI treatment, Benzonase treatment was used to eliminate free oligonucleotides from the preparation. 100-120 U/ml Benzonase (Merck KGaA, Darmstadt, Germany) and 5 mM MgCl2 were added and incubated for 3 h at 37° C. before dialysis.
- Dialysis: VLP preparations packaged with immunostimulatroy nucleic acids used in mouse immunization experiments were extensively dialysed (2x against 200fold volume) for 24 h against PBS pH 7.4 with a 300 kDa MWCO dialysis membrane (Spectrum Medical Industries, Houston, US) to eliminate added enzymes and free nucleic acids.
- Analytics of packaging: release of packaged immunostimulatory nucleic acids: To 50
μl capsid solution 1 μl of proteinase K (600 U/ml, Roche, Mannheim, Germany), 3μl 10% SDS-solution and 6 μl 10fold proteinase buffer (0.5 M NaCl, 50 mM EDTA, 0.1 M Tris pH 7.4) were added and subsequently incubated overnight at 37° C. VLPs are completed hydrolysed under these conditions. Proteinase K was inactivated by heating for 20 min at 65° C. 1 μl RNAse A (Qiagen, 100 μg/ml, diluted 250 fold) was added to 25 μl of capsid. 2-30 μg of capsid were mixed with 1 volume of 2×loading buffer (1×TBE, 42% w/v urea, 12% w/v Ficoll, 0.01% Bromphenolblue), heated for 3 min at 95° C. and loaded on a 10% (for oligonucleotides of about 20 nt length) or 15% (for >than 40 mer nucleic acids) TBE/urea polyacrylamid gel (Invitrogen). Alternatively samples were loaded on a 1% agarose gel with 6×loading dye (10 mM Tris pH 7.5, 50 mM EDTA, 10% v/v glycerol, 0.4% orange G). TBE/urea gels were stained with CYBRGold and agarose gels with stained with ethidium bromide. - FIGS. 17, 18 and19 show the packaging of B-CpG, NKCpG and G10-PO oligonucleotides into HBc33. RNA content in the VLPs was strongly reduced after RNaseA treatment (FIGS. 17A, 18A, 19A) while most of the capsid migrated as a a slow migrating smear presumably due to the removal of the negatively charged RNA (FIGS. 17B, 18B, 19B). After incubation with an excess of oligonucleotid the capsids contained a higher amount of nucleic acid than the RNAseA treated capsids and therefore migrated at similar velocity as the untreated capsids. Additional treatment with DNAse I or Benzonase degraded the free oligonucleotides while oligonucleotides packaged in the capsids did not degrade, clearly showing packaging of oligonucleotides. In some cases packaging of oligonucleotides was confirmed by proteinase K digestion (as described in Examples 15 and 16) after DNAsel/Benzonase treatment and dialysis. The finding that oligonucleotides released from the capsid with the procedure described above were of the same size than the oligonucleotide used for packaging clearly demonstrated packaging of oligonucleotides (FIGS. 17C, 18C).
- FIG. 20 shows packaging of a large single-stranded oligonucleotide Cy150-1 into HBc33. Cy150-1 contains 7.5 repeats of CyCpG and was synthesized according standard oligonucleotide synthesis methods (IBA, Gottingen, Germany). RNA content in the capsid was strongly reduced after RNaseA treatment while most of the capsid migrated as a slow migrating smear (FIGS. 20A, B). Capsid were diluted with 4 volumes of water and concentrated to 1 mg/ml. After incubation with an excess of Cyl5O-1 the capsid contained a bigger amount of nucleic acid and thus migrated at similar velocity as the untreated capsids. Additional treatment with DNAseI degraded the free, not packaged oligonucleotides while oligonucleotides in capsids were not degraded (FIG. 20A). Release of the DNAsel-resistant nucleic acid from the packaged VLPs by heating for 3 min at 95° C. in TBE/urea loading buffer revealed the presence of the 150 mer (FIG. 20C).
- FIG. 21 shows packaging of oligonucleotide NKCpGpt in HBcP1A. Treatment with RNAse reduced nucleic acid content and slowed migration of the capsids. Addition of NKCpGpt restored nucleic acid content in capsids and fast migration.
- FIG. 17 depicts the analysis of B-CpG packaging into HBc33 VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are 50 μg of the following samples: 1. HBc33 VLP untreated; 2. HBc33 VLP treated with RNase A; 3. HBc33 VLP treated with RNase A and packaged with B-CpG; 4. HBc33 VLP treated with RNase A, packaged with B-CpG and treated with DNaseI; 5. HBc33 VLP treated with RNase A, packaged with B-CpG, treated with DNaseI and dialysed; 6. 1 kb MBI Fermentas DNA ladder. (C) depicts the analysis of the amount of packaged oligo extracted from the VLP on a 1.5% agarose gel stained with ethidium bromide: Loaded on gel are the following samples: 1. 0.5 nmol B-CpG control; 2. 0.5 nmol B-CpG control; 3. B-CpG oligo content HBc33 after phenol/chloroform extraction; 4. B-CpG oligo content HBc33 after phenol/chloroform extraction and RNase A treatment; 5. B-CpG oligo content HBc33 after phenol/chloroform extraction and DNaseI treatment; 6. empty; 7. MBI Fermentas 100 bp DNA ladder
- FIG. 18 depicts the analysis of NKCpG packaging into HBc33 VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are 15 μg of the following samples: 1. HBc33 VLP untreated; 2. HBc33 VLP treated with RNase A; 3. HBc33 VLP treated with RNase A and packaged with NKCpG; 4. HBc33 VLP treated with RNase A, packaged with NKCpG, treated with DNaseI and dialysed; 5. 1 kb MBI Fermentas DNA ladder. (C) depicts the analysis of the amount of packaged oligo extracted from the VLP on a 15% TBE/urea gel stained with CYBR Gold. Loaded on gel are the following samples: 1. NKCpG oligo content HBc33 after proteinase K digestion and RNase A treatment; 2. 20 pmol NKCpG control; 3. 10 pmol NKCpG control; 4. 40 pmol NKCpG control
- FIG. 19 depicts the analysis of g10gacga-PO packaging into HBc33 VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are 15 μg of the following samples: 1. 1 kb MBI Fermentas DNA ladder; 2. HBc33 VLP untreated; 3. HBc33 VLP treated with RNase A; 4. HBc33 VLP treated with RNase A and packaged with g10gacga-PO; 5. HBc33 VLP treated with RNase A, packaged with g10gacga-PO, treated with Benzonase and dialysed.
- FIG. 20 depicts the analysis of CyCpG-150 packaging into HBc33 VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are 15 μg of the following samples: 1. 1 kb MBI Fermentas DNA ladder; 2. HBc33 VLP untreated; 3. HBc33 VLP treated with RNase A; 4. HBc33 VLP treated with RNase A and packaged with CyCpG-150; 5. HBc33 VLP treated with RNase A, packaged with CyCpG-150, treated with DNaseI and dialysed; 6. HBc33 VLP treated with RNase A, packaged with CyCpG-150, treated with DNaseI and dialysed. (C) depicts the analysis of the amount of packaged oligo extracted from the VLP on a 10% TBE/urea gel stained with CYBR Gold. Loaded on gel are the following samples: 1. 20 pmol CyCpG-150 control; 2. 10 pmol CyCpG-150 control; 3. 4 pmol CyCpG-150 control; 4. CyCpG-150 oligo content of 4 μg HBc33 after 3 min at 95° C. with 1 volume TBE/urea sample buffer.
- FIG. 21 depicts the analysis of NKCpGpt packaging into HBcP1A VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are 15 μg of the following samples: 1. 1 kb MBI Fermentas DNA ladder; 2. HBcP1A VLP untreated; 3. HBcP1A VLP treated with RNase A; 4. HBcP1A VLP treated with RNase A and packaged with NKCpGpt.
- Recombinantly produced HBcAg-wt VLPs were packaged after coupling with peptide p33 (CGG-KAVYNFATM), derived from lymphocytic choriomeningitis virus (LCMV). For coupling HBcAg-wt VLPs (2 mg/ml) were derivatized with 25×molar excess of SMPH (Succinimidyl-6-[(1-maleimido-propionamido)hexanoate], Pierce) for 1 h at 25° C. in a thermomixer. The derivatized VLPs were dialyzed to Mes buffer (2-(N-morpholino) ethanesulphonic acid) pH 7.4 for 2×2 h using MWCO 10.000 kD dialysis membranes at 4° C. VLPs (50 μM) were subsequently coupled to the N-terminal cysteine of the p33 peptide (250 μM) during a 2 h incubation in a thermomixer at 25° C. Samples were dialyzed (MWCO 300.000) extensively to 1×PBS pH 7.4 to eliminate undesired free peptide.
- FIG. 22 shows SDS-PAGE analysis of HBcAg wt VLPs derivatization with SMPH and coupling to p33 peptide. Samples were analysed by 16% SDS PAGE and stained with Coomassie Blue. HBcAg-wt was visible as a 21 kD protein band. Due to the low molecular weigth of SMPH is the derivatised product only slightly larger and can not be distinguished by SDS-PAGE. Peptide alone was visible as a 3 kD band and coupled product, termed HBx33, showed a strong secondary band at approximately 24 kD accounting for more than 50% of total HBcAg-wt.
- Enzymatic RNA hydrolysis: HBx33 VLPs (0.5-1.0 mg/ml, 1×PBS buffer pH 7.4) in the presence of RNase A (300 μg/ml, Qiagen AG, Switzerland) were diluted with 4 volumes H2O to decrease salt concentration to a final 0.2×PBS concentration and incubated for 3 h at 37° C. in a thermomixer at 650 rpm.
- Packaging of immunostimulatory nucleic acids: After RNase A digestion HBx33 VLPs were concentrated using Millipore Microcon or Centriplus concentrators, then supplemented with 130 nmol/ml CpG-oligonucleotide B-CpGpt and incubated in a thermomixer for 3 h at 37° C. in 0.2×PBS pH 7.4. Subsequently, reaction mixtures were subjected to DNaseI digestion (5 U/ml) for 3 h at 37° C. (DNaseI, RNase free Fluka AG, Switzerland). VLP preparations for mouse immunization were extensively dialysed (2×against 200-fold volume) for 24 h against PBS pH 7.4 with a 300 kDa MWCO dialysis membrane (Spectrum Medical industries Inc., Houston, USA) to eliminate RNase A and the excess of CpG-oligonucleotides. FIG. 23 shows that RNAse treatment reduced the nucleic acid content of the capsids and slowed their migration. Addition of B-CpGpt restored nucleic acid content and fast migration of capsids. DNAse I only digested the free oligonucleotides while the packaged oligonucleotides remained in the VLP also after dialysis (FIG. 23).
- FIG. 22 depicts the SDS-PAGE analysis of the p33 coupling to HBc VLPs after Coomassie Blue staining. Loaded on the gel are the following samples: 1.NEB Prestained Protein Marker, Broad Range (# 7708S), 10 μl; 2. CGG-p33 peptide; 3. HBc VLP derivatized with SMPH, before dialysis; 4. HBc VLP derivatized with SMPH, after dialysis; 5. HBc VLP coupled with CGG-p33, supernatant; 6. HBc VLP coupled with CGG-p33, pellet.
- FIG. 23 depicts the analysis of B-CpGpt packaging into HBx33 VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassic Blue (B). Loaded on the gel are 50 μg of the following samples: 1. HBx33 VLP untreated; 2. HBx33 VLP treated with RNase A; 3. HBx33 VLP treated with RNase A and packaged with B-CpGpt; 4. HBx33 VLP treated with RNase A, packaged with B-CpGpt and treated with DNaseI; 5. HBx33 VLP treated with RNase A, packaged with B-CpGpt, treated with DNaseI and dialysed; 6. 1 kb MBI Fermentas DNA ladder
- Coupling of p33 peptides to Qβ VLPs:
- Recombinantly produced Qβ VLPs were used after coupling to p33 peptides containing an N-terminal CGG or and C-terminal GGC extension (CGG-KAVYNFATM and KAVYNFATM-GGC). Recombinantly produced Qβ VLPs were derivatized with a 10 molar excess of SMPH (Pierce) for 0.5 h at 25° C., followed by dialysis against 20 mM HEPES, 150 mM NaCl, pH 7.2 at 4° C. to remove unreacted SMPH. Peptides were added in a 5 fold molar excess and allowed to react for 2 h in a thermomixer at 25° C. in the presence of 30% acetonitrile. FIG. 24 shows the SDS-PAGE analysis demonstrating multiple coupling bands consisting of one, two or three peptides coupled to the Qβ monomer (Arrows, FIG. 24).
- Qβ VLPs, when produced inE. coli by expressing the bacteriophage Qβ capsid protein, contain RNA which can be digested and so eliminated by incubating the VLPs with RNase A.
- Low Ionic Strength and Low Qβ Concentration Allow RNA Hydrolysis of Qβ VLPs by RNAse A:
- Qβ VLPs at a concentration of 1.0 mg/ml in 20 mM Hepes/150 mM NaCl buffer (HBS) pH 7.4 were either digested directly by addition of RNase A (300 μg/ml, Qiagen AG, Switzerland) or were diluted with 4 volumes H2O to a final 0.2×HBS concentration and then incubated with RNase A (60 μg/ml, Qiagen AG, Switzerland). Incubation was allowed for 3 h at 37° C. in a thermomixer at 650 rpm. FIG. 25 demonstrates that in 1×HBS only a very weak reduction of RNA content was observed, while in 0.2×HBS most of the RNA were hydrolysed. In agreement, capsid migration was unchanged after addition of RNAse A in 1×HBS, while migration was slower after addition of RNAse in 0.2×HBS (FIGS. 25B,D).
- Low Ionic Strength Increases Nucleic Acid Packaging in Qβ VLPs:
- After RNase A digestion in 0.2×HBS the Qβ VLPs were concentrated to 1 mg/ml using Millipore Microcon or Centriplus concentrators and aliquots were dialysed against 1×HBS or 0.2×HBS. Qβ VLPs were supplemented with 130 nmol/ml CpG-oligonucleotide B-CpG and incubated in a thermomixer for 3 h at 37° C. Subsequently Qβ VLPs were subjected to Benzonase digestion (100 U/ml) for 3 h at 37° C. Samples were analysed on 1% agarose gels after staining with ethidium bromide or Coomassie Blue. FIG. 26 shows that in 1×HBS only a very low amount of oligonucleotides could be packaged, while in 0.2×HBS a strong ethidium bromide stained band was detectable, which colocalized with the Coomassie blue stain of the capsids.
- Different Immunostimulatory Nucleic acids can be Packaged in Qβ VLPs:
- After RNase A digestion in 0.2×HBS the Qβ VLPs were concentrated to 1 mg/ml using Millipore Microcon or Centriplus concentrators and supplemented with 130 nmol/ml CpG-oligonucleotides B-CpGpt, g10gacga and the 253 mer dsCyCpG-253 (Table I) and incubated in a thermomixer for 3 h at 37° C. Subsequently Qβ VLPs were subjected to DNAse I digestion (5 U/ml) or Benzonase digestion (100 U/ml) for 3 h at 37° C. Samples were analysed on 1% agarose gels after staining with ethidium bromide or Coomassie Blue. FIG. 27 shows that the different nucleic acids B-CpGpt, glogacga and the 253mer dsDNA could be packaged into Qbx33. Packaged nucleic acids were resistant to DNAse I digestion and remained packaged during dialysis (FIG. 27). Packaging of B-CpGpt was confirmed by release of the nucleic acid by proteinase K digestion followed by agarose electrophoresis and ethidium bromide staining (FIG. 27C).
- FIG. 24 depicts the SDS-PAGE analysis of the p33 coupling to Qβ VLPs after Coomassie Blue staining. Loaded are the following samples: (A) 1. NEB Prestained Protein Marker, Broad Range (# 7708S), 10 μl; 2. Qβ VLP, 14 μg; 3. Qβ VLP derivatized with SMPH, after dialysis; 4. Qβ VLP coupled with CGG-p33, supernatant. (B) 1. NEB Prestained Protein Marker, Broad Range (# 7708S), 10 μl; 2. Qβ VLP, 10 μg; 3. Qβ VLP coupled with GGC-p33, supernatant.
- FIG. 25 depicts the analysis of RNA hydrolysis from Qβ VLPs by RNase A under low and high ionic strength on a 1% agarose gel stained with ethidium bromide (A, C) and Coomassie Blue (B, D). Loaded on the gel are the following samples: (A,
B) 1.MBI Fermentas 1 kb DNA ladder; 2. Qβ VLP untreated; 3. Qβ VLP treated with RNase A in 1×HBS buffer pH 7.2. (C, D) 1.MBI Fermentas 1 kb DNA ladder; 2.Qβ 3 VLP untreated; 3. Qβ VLP treated with RNase A in 0.2×HBS buffer pH 7.2. - FIG. 26 depicts the analysis of B-CpG packaging into Qβ VLPs under low and high ionic strength on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are the following samples: 1. Qβ VLP untreated; 2. Qβ VLP treated with RNase A; 3. Qβ VLP treated with RNase A and packaged with B-CpG in 0.2×HBS buffer pH 7.2 and treated with Benzonase; 4. HBx33 VLP treated with RNase A, packaged with B-CpG in 1×HBS buffer pH 7.2 and treated with Benzonase.
- FIG. 27 depicts the analysis of B-CpGpt packaging into Qbx33 VLPs on a 1% agarose gel stained with ethidium bromide (A) and Coomassie Blue (B). Loaded on the gel are 50 μg of the following samples: 1. Qbx33 VLP untreated; 2. Qbx33 VLP treated with RNase A; 3. Qbx33 VLP treated with RNase A and packaged with B-CpGpt; 4. Qbx33 VLP treated with RNase A, packaged with B-CpGpt, treated with DNaseI and dialysed; 5.1 kb MBI Fermentas DNA ladder. (C) depicts the analysis of the amount of packaged oligo extracted from the VLP on a 15% TBE/urea stained with CYBR Gold. Loaded on gel are the following samples: 1. BCpGpt oligo content of 2 μg Qbx33 VLP after proteinase K digestion and RNase A treatment; 2. 20 pmol BCpGpt control; 3. 10 pmol BCpGpt control; 4. 5 pmol BCpGpt control
- FIG. 27D and E depict the analysis of g10gacga-PO packaging into Qbx33 VLPs on a 1% agarose gel stained with ethidium bromide (D) and Coomassie Blue (E). Loaded on the gel are 15 μg of the following samples: 1.
MBI Fermentas 1 kb DNA ladder; 2. Qbx33 VLP untreated; 3. Qbx33 VLP treated with RNase A; 4. Qbx33 VLP treated with RNase A and packaged with g10gacga-PO; 5. Qbx33 VLP treated with RNase A, packaged with g10gacga-PO, treated with Benzonase and dialysed. - FIGS. 27E and F depict the analysis of dsCyCpG-253 packaging into Qbx33 VLPs on a 1% agarose gel stained with ethidium bromide (E) and Coomassie Blue (F). Loaded on the gel are 15 μg of the following samples: 1.
MBI Fermentas 1 kb DNA ladder; 2. Qbx33 VLP untreated; 3. Qbx33 VLP treated with RNase A; 4. Qbx33 VLP treated with RNase A, packaged with dsCyCpG-253 and treated with DNaseI; 5. Qbx33 VLP treated with RNase A, packaged with dsCyCpG-253, treated with DNaseI and dialysed. - Disassembly and Reassembly of Qβ VLP
- Disassembly: 70 mg of pure lyophilized Qβ VLP gave a protein content of about 35 mg, according to spectrophotometric determination using the average result obtained with the following three formulae: 1. (183*OD230 nm−75.8*OD260 nm)*volume (ml)−2. ((OD235 nm−OD280 nm)/2.51)×volume−3.(OD228.5 nm−OD234.5 nm)*0.37)×volume. The pure lyophilized Qβ VLP was solubilized in 7 ml of 6 M GuHCl and incubated overnight at 4° C. The solution was clarified for 15 minutes, at 6000 rpm (Eppendorf 5810 R, in fixed angle rotor F34-6-38, used in all the following steps). A negligible sediment was discarded, and the supernatant was dialysed 5× against 200-300 ml NET buffer (20 mM Tris-HCl, pH 7.8 with 5 mM EDTA and 150 mM NaCl) over 3 days. Alternatively, the supernatant was dialyzed in a continuous mode against 1.5 l NET buffer over 3-4 days. The resulting suspension was centrifuged at 12000 rpm for 20 minutes. The pellet was resolubilized in 2-3 ml 8 M urea, while the supernatant was precipitated with solid ammonium sulphate at 60% saturation. A saturated ammonium sulphate solution was added to the pellet previously resolubilized in urea to 60% saturation, and the solution was left to precipitate 4 days at 4° C., with subsequent centrifugation at 12000 rpm for 20 minutes. This pellet, and the pellet of the initial supernatant were resolubilized and joined in a total volume of 3 ml of 7 M urea, 10 mM DTT. This material was loaded on a Sephadex G75 column, eluted at 2 ml/h with 7 M urea, 10 mM DTT. Two peaks were isolated. A high molecular weight peak preceded a peak of lower apparent molecular weight. Calibration of the column with chymotrypsin in the same elution buffer revealed that the apparent molecular weight of the second peak is consistent with Qβ coat protein being in a dimeric form. Fractions containing this dimer material were pooled and precipitated with ammonium sulphate (2 days, at 4° C.). The pellet was washed with a few droplets of water, centrifuged again, and solubilized in 2 ml of 7 M urea, 10 mM DTT. This material was then purified on a short (1.5×27 cm) Sepharose 4B column. One peak eluted from the column and the fractions were pooled, leading to a protein preparation with a volume of 10 ml, and a ratio of absorbance at 280 nm vs. 260 nm of 0.68/0.5, yielding about 450 nmol of Qβ coat protein (giving a maximum of 2.5 nmol VLP after reassembly, considering that there are 180 subunits in the VLP) and a protein concentration of 630 μg/ml (calculated using the spectrophotometric methods described above).
- Reassembly: β-mercaptoethanol was added to the 10 ml dimer fraction to a final concentration of 10%, and 300 μl of a solution of (CpG)20OpA oligodeoxynucleotide, containing 12.3 nmol of oligonucleotide, were added. The reassembly mixture was first dialyzed against 30 ml NET buffer containing 10% beta-mercaptoethanol for 2 hours at 4° C., and then dialyzed in a continuous mode, with a flow of NET buffer of 8 ml/h over 4 days at 4° C. The reassembly mixture was then desalted against water by dialysis, with 6 buffer exchanges (4×100 ml, 2×1 liter).
- The ratio of absorbance at 280 nm vs. 260 nm was of 0.167/0.24. The protein was dried by lyophilization. The dried protein was resolubilized in water and purified by ultracentrifugation on a sucrose gradient in a Beckman L 8-80 centrifuge, with the SW 50.1 rotor at 22 000 rpm, for 17h at +4° C. The sucrose gradient purification was performed as follows. 5 layers of 1 ml of the following sucrose concentrations (w/v) were dispensed into a centrifuge tube: 50%, 43%, 36%, 29% and 22%. The so formed succession of layers was left standing overnight at 4° C. 0.5 ml of the protein sample was layered on the gradient, and centrifuged for 17 h as indicated above. The gradient was eluted from the bottom of the centrifuge tube, and the 5 ml of the gradient were divided in 16 fractions of approximatively 300 μl. The fractions in the gradient were analyzed by SDS-PAGE (FIG. 28) and Ouchterlony assay. Fractions 6-9 contained Qβ coat protein and gave the precipitation band typical of Qp VLP in an Ouchterlony assay. Fractions 11-15, with a lower apparent density and containing Qβ protein gave no capsid band in the Ouchterlony assay. The reassembled Qβ had the same apparent density as wt Qβ within experimental error. The fractions 6-9 of the sucrose gradient were pooled, dialyzed against water and lyophilized. This material was then resolubilized for electron microscopy (EM) analysis (FIG. 29) and Ouchterlony assay (FIG. 30A and B). The EM procedure was as follows: A suspension of the proteins was absorbed on carbon-formvar coated grids and stained with 2% phosphotungstic acid (
pH 6,8). The grids were examined with a JEM 100C (JEOL,Japan) electron microscope at an accelerating voltage of 80 kV. Photographic records (negatives) were performed on Kodak electron image film and electron micrographs were obtained by printing of negatives on Kodak Polymax paper. Both methods indicate that the reassembled VLPs have the same macromolecular properties as intact Qβ VLP. In addition, the pattern of disulfide bonds displayed by the purified reassembled Qβ VLP is indistinguishable from the disulfide bond pattern displayed by the untreated Qβ VLP, with the typical pattern of pentamers and hexamers (FIG. 31A). - Analysis of nucleic acid content: Reassembled Qβ VLP was digested with pancreatic DNAse I as follows. To 200 μl of a 0.5 mg/ml solution of Qp VLP reassembled with (CpG)20OpA oligodeoxynucleotide were added 20 μL of a 1 U/μl DNAse I (Fluka) solution, and 22 μl of DNAse I buffer (20 mM MgCl2, 200 mM Tris, pH 8.3). The reaction mixture was incubated for 2h30 min. at 37° C. The nucleic acid content of the sample was subsequently isolated by phenol/chloroform extraction, and loaded on a 2% agarose gel stained with ethidium bromide (FIG. 31B). A band of the size of the packaged oligodeoxynucleotide was detected on the gel. A band migrating at a higher apparent molecular weight was also visible. We cannot exclude the presence of multimers of the (CpG)20OpA oligodeoxynucleotide which would lead to a band at this height. The gel thus shows that DNAse I protected oligodeoxynucleotides of the right size were present in the reassembled Qβ VLP, since the oligodeoxynuleotides could subsequently be digested by DNAse I, but not by RNAse A. Oligodeoxynucleotides could thus be successfully packaged in Qβ VLP after initial disassembly of the VLP, purification of the disassembled coat protein from nucleic acids and subsequent reassembly of the VLP in the presence of oligodeoxynucleotide.
- FIG. 28 shows the SDS-PAGE analysis of the fractions from the sucrose gradient centrifugation. Loaded on the gels were the following samples. Lane 1-10: fractions 6-15 of the sucrose gradient ultracentrifugation.
- FIG. 29 shows the EM pictures of (A) intact Qβ VLP and (B) Qβ VLP after disassembly and reassembly in the presence of oligonucleotide (CpG)20OpA, and subsequent purification by sucrose gradient ultra-centrifugation. A dense overlay of capsids is observed, and those capsids display the same structural features and properties as the intact Qβ VLPs.
- FIG. 30 shows the Ouchterlony analysis (immunodiffusion) of the reconstructed Qβ VLP. In FIG. 30A, Qβ VLP reassembled with oligonucleotide (CpG)200 pA was loaded next to intact Qβ VLP. The two characteristic precipitation bands are indicated by black arrows. The two precipitation bands are concurrent, indicating that the reassembled Qβ VLP diffuse as the intact Qβ VLP. In FIG. 30B,
sample 1 is Qβ VLP reassembled in the presence of ribosomal RNA, whilesample 2 is intact Qβ VLP andsample 3 is Qβ VLP reassembled with oligonucleotide (CpG)20OpA. The precipitation bands are indicated by white arrows. - FIG. 31A shows the analysis of the untreated and reassembled Qβ VLP by non-reducing SDS-PAGE. The pentamers and hexamers of Qβ VLP are indicated by arrows.
- FIG. 31B shows the agarose gel electrophoresis analysis of the nucleotide content extracted after DNAse I digestion of Qβ VLP reassembled with oligonucleotide (CpG)20OpA. The nucleic acid content was either untreated (lane 1), or subsequently digested with DNAse I (lane2) or RNAse A (lane 3); 33 μg of reassembled Qβ VLP were loaded on each lane. 300 ng of a 50 bp oligonucleotide were loaded on
lane 4, while 10 μl of the GeneRuler 100 bp DNA ladder +marker (MBI Fermentas) was loaded onlane 5. - Disassembly and Reassembly of Qβ VLP with Oligodeoxynucleotides of Various Sequences
- The disassembly of Qβ VLP was performed essentially as described in Example 1, but for the use of 8 M urea instead of 7 M urea to resuspend the ammonium sulphate pellets.
- The reassembly of Qβ VLP with the oligos CyOpA, CyCyCy, (CpG)20-OpA and CyCpG was performed essentially as described in Example 1, but for the following variations. A dialysis step against 10%-mercaptoethanol in NET buffer (20 mM Tris-HCl, pH 7.8 with 5 mM EDTA and 150 mM NaCl) for 1 hour at 4° C. was added to the procedure before addition of the oligodeoxynucleotide solution to the dimer solution in the dialysis bag. The oligodeoxynucleotides were then added to the dimer solutions, resulting approx. in a ten-fold molar excess of oligonucleotide to capsid (180 subunits) as described previously. The reassembly mixture was first dialyzed against 30 ml NET buffer containing 10% β-mercaptoethanol for 1 hours at 4° C., and then dialyzed in a continuous mode, with a flow of NET buffer of 8 ml/h over 4 days at 4° C. A sample of the reassembly reaction of Qβ VLP with oligodeoxynucleotide CyOpA was taken for EM analysis (FIG. 32) at the end of the reassembly reaction. The EM procedure using phosphotungstic acid and described above was used. The reassembly mixtures were then desalted against water by dialysis and dried.
- The dried protein was resolubilized in water and purified by ultracentrifugation on a sucrose gradient. The purified reassembled Qβ VLPs were also analyzed by EM (FIGS.33A-D). The electron micrographs indicate that the reassembled VLPs have the same macromolecular properties as intact Qβ VLP. Purification notably enriches the preparations for reassembled particles. Thus, Qβ VLP was successfully reassembled with oligodeoxynucleotides of various lengths and sequences.
- Coupling of the p33 peptide to reassembled Qβ VLP: Qβ VLP reassembled with the oligodeoxynucleotide CyOpA was reacted at a concentration of 1.5 mg/ml, with the cross-linker SMPH diluted from a stock solution in DMSO at a final concentration of cross-linker of 536 μM for 35 minutes at 26° C. in 20 mM Hepes pH 7.4. The derivatized Qβ VLP was dialyzed 2×2 hours against a thousand volumes of 20 mM Hepes, 150 mM NaCl, pH 7.4. The dialysed derivatized Qβ VLP at a concentration of 1.4 mg/ml was subsequently reacted with the p33GGC peptide (sequence: KAVYNFATMGGC) at a final concentration of peptide of 250 μM for 2 hours at 15° C. in 20 mM Hepes, 150 mM NaCl, pH 7.4. The gel of FIG. 34 indicates successful coupling of the p33 peptide to Qβ VLP. Coupling bands corresponding to one, respectively two peptides coupled per subunit are indicated by an arrow in the Figure.
- Analysis of nucleic acid content: The nucleic acid content of reassembled and coupled Qβ VLP was analysed by proteinase K digestion, phenol cloroform extraction and subsequent loading of the extracted oligonucleotide on a TBE/Urea PAGE gel. The analysis procedure was as follows. 25 μl reassembled Qβ VLP (0.5-1 mg/ml) were supplemented with 0.5 μl proteinase K, 1.5 μl 10% SDS and 3
μl 10×proteinase buffer (0.5 M NaCl, 50 mM EDTA, 0.1 M Tris pH 7.4). After incubation overnight at 37° C., proteinase K was inactivated by heating 20 min at 65° C. and the nucleic acid content was extracted from the samples by 1×phenol and 1×chloroform extraction. Subsequently the samples were incubated 2 h at 37° C. with 1 μl RNAseA (Qiagen, 100 μg/ml, diluted 250×). The equivalent of 2 μg starting protein was heated 3 min at 95° C. with 1 volume of 2×loading buffer (1ml 10×TBE, 4.2 g Urea, 1.2 g Ficoll, 1 ml 0.1%Bromophenolblue, H2O up to 10 ml) and loaded on a 15% TBE/Urea polyacrylamide gel (Invitrogen). The gel was run for 1.5 h at 180 V, and fixed in 10% acetic acid/20% ethanol and stained with CYBR Gold (Molecular Probes, Eugene, Oreg., USA). For quantification, 10 and 20 pmol of the oligonucleotide used for the reassembly were applied on the gel as a reference. Resistance of the nucleic acid content to RNAse and its size proved that the packaged nucleic acid was the oligonucleotide used for reassembly. Quantification of the packaged oligodeoxynucleotide was performed by comparison of the band intensity of the extracted oligonucleotide with the band intensity of a reference amount of the same oligonucleotide loaded on the same gel. A figure of 1.75 nmol CyOpA/100 μg Qβ VLP was obtained, giving a ratio of 44 oligonucleotides per VLP on average. - FIG. 32 depicts the electron micrographs of the reassembly reaction of Qβ VLP with the oligonucleotide CyOpA before purification. The magnification was 200 000 fold.
- FIGS.33A-D show the electron micrographs of the purified reassembly reactions of Qβ VLP with the oligodeoxynucleotides Cy(CpG)20 (A), CyCyCy (B), CyCpG (C) and CyOpA (D). The magnification was 200 000 fold.
- FIG. 34 depicts the SDS-PAGE analysis of the coupling of Qβ VLP reassembled with the oligodeoxynucleotide CyOpA to the p33GGC peptide. Loaded on the gel were the following samples: 1. Prestained Protein Marker, Broad Range (# 7708S) 10 μl; 2. Qβ VLP reassembled with CyOpA [1.5 mg/ml] 10 μl; 3. Qβ VLP reassembled with CyOpA [1.5 mg/ml] and derivatized with
SMPH 10 μl; 4. Qβ VLP reassembled with CyOpA [1.5 mg/ml], derivatized with SMPH and coupled with p33-peptide 10 μl; 5. Qβ VLP reassembled with CyOpA [1.5 mg/ml], derivatized with SMPH and coupled with p33-peptide, ⅕th vol of the pellet. - FIG. 35 depicts the analysis of the extracted packaged oligodeoxynucleotides by Urea Polyacrylamide gel electrophoresis, stained with CYBR Gold. The following samples were loaded on the gel: 1. Qβ VLP reassembled with oligonucleotide CyOpA and coupled to p33 GGC peptide, 2 μg protein loaded on the gel. 2. Qβ VLP reassembled with oligonucleotide CyOpA and coupled to p33GGC peptide, frozen and thawed before loading on the gel, 2 μg protein. 3. Qβ VLP reassembled with oligonucleotide Cy(CpG)20 and coupled to p33GGC peptide, frozen and thawed before loading on the gel; 2 μg protein. 4. CyOpA oligonucleotide, 20 pmol. 5. CyOpA oligonucleotide, 10 pmol.
- Disassembly and Reassembly of Qβ VLP
- Disassembly: 10 mg Qβ VLP (as determined by Bradford analysis) in 20 mM HEPES, pH 7.4, 150 mM NaCl was precipitated with solid ammonium sulfate at a final saturation of 60%. Precipitation was performed over night at 4° C. and precipitated VLPs were sedimented by centrifugation for 60 minutes at 4° C. (SS-34 rotor). Pellets were resuspended in 1 ml of 6 M Guanidine hydrochloride (GuHCl) containing 100 mM DTT (final concentration) and incubated for 8 h at 4° C.
- Purification of Qβ coat protein by size exclusion chromatography: The solution was clarified for 10 minutes at 14000 rpm (Eppendorf 5417 R, in fixed angle rotor F45-30-11, used in all the following steps) and dialysed against a buffer containing 7 M urea, 100 mM TrisHCl, pH 8.0, 10 mM DTT (2000 ml) over night. Dialysis buffer was exchanged once and dialysis continued for another 2 h. The resulting suspension was centrifuged at 14 000 rpm for 10 minutes at 4° C. A negligible sediment was discarded, and the supernatant was kept as “load fraction” containing dissasembled coat protein and RNA. Protein concentration was determined by Bradford analysis and 5 mg total protein was applied onto a HiLoad™ Superdex™ 75 prep grade column (26/60, Amersham Biosciences) equilibrated with 7 M urea, 100 mM TrisHCl and 10 mM DTT. Size exclusion chromatography was performed with the equilibration buffer (7 M urea, 100 mM TrisHCl pH 8.0, 10 mM DTT) at 12° C. with a flow-rate of 0.5 ml/min. During the elution absorbance at 254 nm and 280 nm was monitored. Two peaks were isolated. A high molecular weight peak preceded a peak of lower apparent molecular weight. Peaks were collected in fractions of 1.5 ml and aliquots were analysed by SDS-PAGE followed by Coomassie staining as well as SYBR® Gold staining (FIG. 36).
- Purification of Qβ coat protein by ion exchange chromatography: Alternatively, the clearified supernatant was dialysed against a buffer containing 7 M urea, 20 mM MES, 10 mM DTT, pH 6.0 (2000 ml) over night. Dialysis buffer was exchanged once and dialysis continued for another 2 h. The resulting suspension was centrifuged at 14 000 rpm for 10 minutes at 4° C. A negligible sediment was discarded, and the supernatant was kept as “load fraction” containing disassembled coat protein and RNA. Protein concentration was determined by Bradford analysis and 10 mg total protein was diluted to a final volume of 10 ml with buffer A (see below) and applied with a flowrate of 1 ml/min to a 1 ml HiTrap™ SP HP column (Amersham Biosciences, Cat. No. 17-1151-01) equilibrated with buffer A: 7 M urea, 20 mM MES, 10 mM DTT, pH 6.0. The flowthrough which contained the RNA was collected as one fraction. After the column was extensively washed with buffer A (30 CV) the bound Qβ coat protein was eluted in a linear gradient from 0%-100% buffer B (gradient length was 5 CV; buffer A: see above, buffer B: 7 M urea, 20 mM MES, 10 mM DTT, 2 M NaCl, pH 6.0). During the loading, wash and clution the absorbance at 254 nm and 280 nm was monitored. Peak fractions of 1 ml were collected and analysed by SDS-PAGE followed by Coomassie staining as well as SYBR®Gold staining. Fractions containing the Qβ coat protein but not the RNA were identified and the pH was adjusted by addition of 100 μl 1 M TrisHCl, pH 8.0.
- Samples containing the Qβ coat protein but no RNA were pooled and dialysed against 0.87 M urea, 100 mM TrisHCl, 10 mM DTT (2000 ml) over night and buffer was exchanged once and dialysis continued for another 2 h. The resulting suspension was centrifuged at 14 000 rpm for 10 minutes at 4° C. A negligible sediment was discarded, and the supernatant was kept as “disassembled coat protein”. Protein concentration was determined by Bradford analysis.
- Reassembly: Purified Qβ coat protein with a concentration of 0.5 mg/ml was used for the reassembly of VLPs in the presence of an oligodeoxynucleotide. For the reassembly reaction the oligodeoxynucleotide was used in a tenfold excess over the calculated theoretical amount of Qβ-VLP capsids (monomer concentration divided by 180). After the Qβ coat protein was mixed with the oligodeoxynucleotide to be packaged during the reassembly reaction, this solution (volume up to 5 ml) was first dialysed for 2 h against 500 ml NET buffer containing 10% β-mercaptoethanol at 4° C., then dialyzed in a continuous mode, with a flow of NET buffer of 8 ml/h over 72 h at 4° C., and finally for another 72 h with the same continous mode with a buffer composed of 20 mM TrisHCl pH 8.0, 150 mM NaCl. The resulting suspension was centrifuged at 14 000 rpm for 10 minutes at 4° C. A negligible sediment was discarded, and the supernatant contained the reassembled and packaged VLPs. Protein concentration was determined by Bradford analysis and if needed reassembled and packaged VLPs were concentrated with centrifugal filter devices (Millipore, UFV4BCC25, 5K NMWL) to a final proteinconcentration of 3 mg/ml.
- Purification of reassembled and packaged VLPs: Up to 10 mg total protein was loaded onto a Sepharose™ CL-4B column (16/70, Amersham Biosciences) equilibrated with 20 mM HEPES pH 7.4, 150 mM NaCl. Size exclusion chromatography was performed with the equilibration buffer (20 mM HEPES pH 7.4, 150 mM NaCl) at room temperature with a flow-rate of 0.4 ml/min. During the elution absorbance at 254 nm and 280 nm was monitored. Two peaks were isolated. A high molecular weight peak preceded a peak of lower apparent molecular weight. Fractions of 0.5 ml were collected and analysed by SDS-PAGE followed by Coomassie blue staining (FIG. 37). Calibration of the column with intact and highly purified Qβ capsids fromE. coli revealed that the apparent molecular weight of the major first peak was consistent with Qβ capsids.
- Analysis of Qβ VLPs which had been reassembled in the presence of oligodeoxynucleotides:
- A) Overall structure of the capsids: Qβ VLPs that were reassembled either in the presence of one of the following oligodeoxynucleotides (CyOpA, Cy(CpG)200 pA, Cy(CpG)20, CyCyCy, (CpG)200 pA), or in the presence of tRNA fromE. coli (Roche Molecular Biochemicals, Cat. No. 109541) were analyzed by electron microscopy (negative staining with uranylacetate pH 4.5) and compared to intact Qβ VLPs purified from E. coli. As a negative control served a reassembly reaction where nucleic acid was omitted. Reassembled capsids display the same structural features and properties as the intact Qβ VLPs (FIG. 38).
- B) Hydrodynamic size of reassembled capsids: Qβ capsids which had been reassembled in the presence of oligodeoxynucleotides were analyzed by dynamic light scattering (DLS) and compared to intact Qβ VLPs which had been purified fromE. coli. Reassembled capsids showed the same hydrodynamic size (which depends both on mass and conformation) as the intact Qβ VLPs.
- C) Disulfide-bond formation in reassembled capsids: Reassembled Qβ VLPs were analyzed by native polyacrylamid gelelectrophoresis and compared to intact Q, VLPs which had been purified fromE. coli. Reassembled capsids displayed the same disulfide-bond pattern as the intact Qβ VLPs (FIG. 39).
- D) Analysis of nucleic acid content of the Qβ VLPs which had been reassembled in the presence of oligodeoxynucleotides by agarose gelelectrophoresis: 5 μg reassembled Qβ VLPs were incubated in total reaction volume of 25 μl either with 0.35 units RNase A (Qiagen, Cat. No. 19101), 15 units DNAse I (Fluka, Cat. No. 31136), or without any further addition of enzymes for 3 h at 37° C. Intact Qβ VLPs which had been purified fromE. coli served as control and were incubated under the same conditions as described for the capsids which had been reassembled in the presence of oligodeoxynucleotides. The reactions were then loaded on a 0.8% agarose gel that was first stained with ethidumbromide (FIG. 40A) and subsequently with Coomassie blue (FIG. 40B). The ethidium bromide stain shows, that none of the added enzymes could digest the nucleic acid content in the reassembled Qβ capsids showing that the nucleic acid content (i.e. the oligodeoxynucleotides) is protected. This result indicates that the added oligodeoxynucleotides were packaged into the newly formed capsids during the reassembly reaction. In contrast, the nucleic acid content in the intact Qβ VLPs which had been purified from E. coli was degraded upon addition of RNase A, indicating that the nucleic acid content in this VLPs consists of RNA. In addition, both the ethidium bromide stain and the Coomasie blue stain of the agarose gel shows that the nucleic acid containing Qβ VLPs (reassembled and purified from E. coli, respectively) are migrating at about the same size, which indicates that the reassembly reaction led to Qβ VLPs of comparable size to intact Qβ VLPs which had been purified from E. coli.
- The gel thus shows that DNAse I protected oligodeoxynucleotides were present in the reassembled Qβ VLP. Furthermore, after the packaged oligodeoxynuleotides had been extracted by phenol/chloroform they were digestable by DNAse I, but not by RNAse A. Oligodeoxynucleotides could thus be successfully packaged into Qβ VLPs after initial disassembly of the VLP, purification of the disassembled coat protein from nucleic acids and subsequent reassembly of the VLPs in the presence of oligodeoxynucleotides.
- E) Analysis of nucleic acid content of the Qβ VLPs which had been reassembled in the presence of oligodeoxynucleotides by denaturing polyacrylamide TBE-Urea gelelectrophoresis: 40 μg reassembled Qβ VLPs (0.8 mg/ml) were incubated in a total reaction volume of 60 μl with 0.5 mg/ml proteinase K (PCR-grade, Roche Molecular Biochemicals, Cat. No. 1964364) and a reaction buffer according to the manufacturers instructions for 3 h at 37° C. Intact Qβ VLPs which had been purified fromE. coli served as control and were incubated with proteinase K under the same conditions as described for the capsids which had been reassembled in the presence of oligodeoxynucleotides. The reactions were then mixed with a TBE-Urea sample buffer and loaded on a 15% polyacrylamide TBE-Urea gel (Novex®, Invitrogen Cat. No. EC6885). As a qualitative as well as quantitative standard, 1 pmol, 5 pmol and 10 pmol of the oligodeoxynucleotide which was used for the reassembling reaction, were loaded onto the same gel. This gel was fixed with 10% acetic acid, 20% methanol, equilibrated to neutral pH and stained with SYBR®-Gold (Molecular Probes Cat. No. S-11494). The SYBR®-Gold stain showed (FIG. 41), that the reassembled Qβ capsids contained nucleic acid comigrating with the oligodeoxynucleotides which were used in the reassembly reaction. Note that intact Qβ VLPs (which had been purified from E. coli) did not contain a nucleic acid of similar size. Taken together, analysis of the nucleic acid content of the Qβ VLPs which had been reassembled in the presence of oligodeoxynucleotides showed that oligodeoxynucleotides were protected from DNase I digestion, meaning that they were packaged) and that the added oligodeoxynucleotides could be reisolated by proper means (e.g. proteinase K digestion of the Qβ VLP).
- FIG. 36 shows the purification of disassembled Qβ coat protein by size exclusion chromatography. 5 μl of the indicated fractions (#) were mixed with sample buffer and loaded onto 16% Tris-Glycine gels (Novex® by Invitrogen, Cat. No. EC64952). After the run was completed the gels were stained first with Coomassie blue (A) and after documentation the same gels were stained with SYBR®-Gold (B). Note that the first high molecular weight peak (fractions #15-#20) contained no protein but nucleic acids. On the other hand, the second peak of lower apparent molecular weight contained disassembled coat protein which was thereby separated from the nucleic acids.
- FIG. 37 shows the purification of reassembled Qβ VLPs by size exclusion chromatography.
- 10 μl of the indicated fractions (#) were mixed with sample buffer and loaded onto a 16% Tris-Glycine gel (Novexo by Invitrogen, Cat. No. EC64952). After the run was completed the gel was stained with Coomassie blue. Due to the reducing conditions, disulfide bonds were reduced and the proteinaceous monomer of the reassembled VLPs is visible as 14 kDa coat protein.
- FIG. 38 shows electron micrographs of Qβ VLPs that were reassembled in the presence of different oligodeoxynucleotides. The VLPs had been reassembled in the presence of the indicated oligodeoxynucleotides or in the presence of tRNA but had not been purified to a homogenous suspension by size exclusion chromatography. As positive control served preparation of “intact” Qβ VLPs which had been purified fromE. coli. Importantly, by adding any of the indicated nucleic acids during the reassembly reaction, VLPs of the correct size and conformation could be formed, when compared to the “positive” control. This implicates that the reassembly process in general is independent of the nucleotide sequence and the length of the used oligodeoxynucleotides. Note that adding of nucleic acids during the reassembly reaction is required for the formation of Qβ VLPs, since no particles had been formed if nucleic acids were omitted from the reassembly reaction.
- FIG. 39 shows the analysis of the disulfide-bond pattern in reassembled and purified Qβ capsids. 5 μg of the indicated capsids were mixed with sample buffer that either contained a reducing agent or not and loaded onto a 16% Tris-Glycine gel. After the run was completed the gel was stained with Coomassie blue. When compared to “intact” capsids purified fromE. coli, the reassembled Qβ VLPs displayed the same disulfide bond pattern.
- FIG. 40 shows the analysis of nucleic acid content of the reassembled Qβ VLPs by nuclease treatment and agarose gelelectrophoresis: 5 μg of reassembled and purified Qβ VLPs and 5 μg of Qβ VLPs which had been purified fromE. coli, respectively, were treated as indicated. After this treatment, samples were mixed with loading dye and loaded onto a 0.8% agarose gel. After the run the gel was stained first with ethidum bromide (A) and after documentation the same gel was stained with Coomassie blue (B). Note that the nucleic acid content of the reassembled and purified Qβ VLPs were resistant towards RNase A digestion while the nucleic acid content of Qβ VLPs purified from E. coli was digested upon incubation with RNase A. This indicates that the nucleic acid content of the reassembled Qβ capsids consists out of deoxynucleotides which of course are protected from RNase A digestion. Hence, oligodeoxynucleotides were packaged into Qβ VLPs during the reassembly reaction.
- FIG. 41 shows the analysis of nucleic acid content of the reassembled Qβ VLPs by proteinase K treatment and polyacrylamide TBEIUrea gelelectrophoresis: The equivalent of 1 ug Qβ VLPs which had been digested by proteinase K-treatment was mixed with a TBE-Urea sample buffer and loaded on a 15% polyacrylamide TBE-Urea gel (Novex®, Invitrogen Cat. No. EC6885). As qualitative as well as quantitative standard, 1 pmol, 5 pmol and 10 pmol of the oligodeoxynucleotide which was used for the reassembly reaction, was loaded onto the same gel. After the run was completed, the gel was fixed, equilibrated to neutral pH and stained with SYBR®-Gold (Molecular Probes Cat. No. S-11494). Note that intact Qβ VLPs (which had been purified fromE. coli) did not contain nucleic acids of similar size than those which had been extracted from reassembled Qβ capsids. In addition, nucleic acids isolated from reassembled VLPs were comigrating with the oligodeoxynucleotides which had been used in the reassembly reaction. This results confirmed that the used oligodeoxynucleotides were packaged into reassembled Qβ capsids.
- A. Disassembly and Reassembly of AP205 VLP from Material Able to Reassemble Without Addition of Oligonucleotide
- Disassembly: 40 mg of lyophilized purified AP205 VLP were resolubilized in 4 ml 6 M GuHCl, and incubated overnight at 4° C. The disassembly mixture was centrifuged at 8000 rpm (Eppendorf 5810 R, in fixed angle rotor F34-6-38, used in all the following steps). The pellet was resolubilized in 7 M urea, while the supernatant was dialyzed 3 days against NET buffer (20 mM Tris-HCl, pH 7.8 with 5 mM EDTA and 150 mM NaCl) with 3 changes of buffer. Alternatively, dialysis was conducted in continuous mode over 4 days. The dialyzed solution was centrifuged at 8000 rpm for 20 minutes, and the pellet was resolubilized in 7 M urea, while the supernatant was pelletted with ammonium sulphate (60% saturation), and resolubilized in a 7 M urea buffer containing 10 mM DTT. The previous pellets all resolubilized in 7 M urea were joined, and precipitated with ammonium sulphate (60% saturation), and resolubilized in a 7 M urea buffer containing 10 mM DTT. The materials resolubilized in the 7 M urea buffer containing 10 mM DTT were joined and loaded on a Sephadex G75 column equilibrated and eluted with the 7 M urea buffer containing 10 mM DTT at 2 ml/h. One peak eluted from the column. Fractions of 3 ml were collected. The peak fractions containing AP205 coat protein were pooled and precipitated with ammonium sulphate (60% saturation). The pellet was isolated by centrifugation at 8000 rpm, for 20 minutes. It was resolubilized in 7 M urea, 10 mM DTT, and loaded on a short Sepharose 4B column (1.5×27
cm Sepharose 4B, 2 ml/h, 7 M urea, 10 mM DTT as elution buffer). Mainly one peak, with a small shoulder eluted from the column. The fractions containing the AP205 coat protein were identified by SDS-PAGE, and pooled, excluding the shoulder. This yielded a sample of 10.3 ml. The protein concentration was estimated spectrophotometrically by measuring an aliquot of protein diluted 25-fold for the measurement, using the following formula: (1.55×OD280−0.76×OD260)×volume. The average concentration was of 1 nmol/ml of VLP (2.6 mg/ml). The ratio of absorbance at 280 nm vs. 260 nm was of 0.12/0.105. - Reassembly: 1.1 ml beta-mercaptoethanol was added to the sample, and the following reassembly reactions were set up:
- 1. 1 ml of AP205 coat protein, no nucleic acids
- 2. 1 ml of AP205 coat protein, rRNA (approx. 200 OD260 units, 10 nmol)
- 100. 9 ml of AP205 coat protein, CyCpG (370 ul of 225 pmol/μl solution, i.e. 83 nmol).
- These mixtures were dialyzed 1 hour against 30 ml of NET buffer containing 10% beta-mercaptoethanol. The mixture containing no nucleic acids was dialyzed separately. The dialysis was then pursued in a continuous mode, and 1 l of NET buffer was exchanged over 3 days. The reaction mixtures were subsequently extensively dialyzed against water (5 changes of buffer), and lyophilized. They were resolubilized in water, and analyzed by EM. All mixtures contained capsids, showing that AP205 VLP reassembly is independent of the presence of detectable nucleic acids, as measured by agarose gel electrophoresis using ethidium bromide staining. The EM analysis of AP205 reassembled with CyCpG is shown on FIG. 42B. The EM procedure was as follows: A suspension of the proteins was absorbed on carbon-formvar coated grids and stained with 2% phosphotungstic acid (
pH 6,8). The grids were examined with a JEM 100C (JEOL,Japan) electron microscope at an accelerating voltage of 80 kV. Photographic records (negatives) were performed on Kodak electron image film and electron micrographs were obtained by printing of negatives on Kodak Polymax paper. The VLP reassembled in the presence of the CyCpG was purified over a Sepharose 4B column (1×50 cm), eluted with NET buffer (1 ml/h). The fractions were analyzed by Ouchterlony assay, and the fractions containing VLP were pooled. This resulted in a sample of 8 ml, which was desalted against water by dialysis, and dried. The yield of capsid was of 10 mg. Analysis of resolubilized material in a 0.6% agarose gel stained with ethidium-bromide showed that the capsids were empty of nucleic acids. Samples of the reassembly reaction containing CyCpG taken after the reassembly step and before extensive dialysis were analysed on a 0.6% agarose gel and are shown in FIGS. 43A and B. A band migrating at the same height than intact AP205 VLP and staining both for ethidium-bromide and Coomassie blue staining could be obtained, showing that AP205 VLP containing oligodeoxynucleotide had been reassembled. The extensive dialysis steps following the reassembly procedure are likely to have led to diffusion of the oligodeoxynucleotide outside of the VLPs. Significantly, the AP205 VLPs could also be reassembled in the absence of detectable oligodeoxynucleotide, as measured by agarose gel electrophoresis using ethidium bromide staining. Oligodeoxynucleotides could thus be successfully bound to AP205 VLP after initial disassembly of the VLP, purification of the disassembled coat protein from nucleic acids and subsequent reassembly of the VLP in the presence of oligodeoxynucleotide. - FIG. 42 shows electron micrographs of either intact recombinant AP205 VLP used for the disassembly step (A), or AP205 VLP disassembled, and subsequently reassembled in the presence of CyCpG (B).
- FIG. 43 shows the agarose gel-electrophoresis analysis of the AP205 VLP sample reassembled in the presence of CyCpG, and taken directly after the reassembly step before dialysis. The gel on FIG. 43A was stained with ethidium-bromide. AP205 VLP reassembled with CyCpG was loaded on lane1, while untreated pure AP205 VLP was loaded on
lane 2. The arrow indicates the band of the reassembled AP205 VLP. The gel on FIG. 43B was stained with Coomassie-brillant blue. Untreated AP205 VLP was loaded onlane 1, while AP205 VLP reassembled with CyCpG was loaded on onlane 2. - B. Reassembly of AP205 VLP Using Disassembled Material Which Does not Reassemble in the Absence of Added Oligonucleotide
- Disassembly: 100 mg of purified and dried recombinant AP205 VLP (Cytos patent) were used for disassembly as described above. All steps were performed essentially as described under disassembly in part A, but for the use of 8 M urea to solublize the pellets of the ammonium sulphate precipitation steps and the omission of the gel filtration step using a CL-4B column prior to reassembly. The pooled fractions of the Sephadex G-75 column contained 21 mg of protein as determined by spectroscopy using the formula described in part A. The ratio of absorbance at 280 nm to the absorbance at 260 nm of the sample was of 0.16 to 0.125. The sample was diluted 50 times for the measurement.
- Reassembly: The protein preparation resulting from the Sephadex G-75 gel filtration purification step was precipitated with ammonium sulphate at 60% saturation, and the resulting pellet solubilized in 2 ml 7 M urea, 10 mM DTT. The sample was diluted with 8 ml of 10% 2-mercaptoethanol in NET buffer, and dialyzed for 1 hour against 40 ml of 10% 2-mercaptoethanol in NET buffer. Reassembly was initiated by adding 0.4 ml of a CyCpG solution (109 nmol/ml) to the protein sample in the dialysis bag. Dialysis in continous mode was set up, and NET buffer used as eluting buffer. Dialysis was pursued for two days and a sample was taken for EM analysis after completion of this dialysis step (FIG. 44B). The dialyzed reassembly solution was subsequently dialyzed against 50% v/v Glycerol in NET buffer, to achieve concentration. One change of buffer was effected after one day of dialysis. The dialysis was pursued over a total of three days.
- The dialyzed and concentrated reassembly solution was purified by gel filtration over a Sepharose 4-B column (1×60 cm) at a flow rate of 1 ml/hour, in NET buffer. Fractions were tested in an Ouchterlony assay, and fractions containing capsids were dried, resuspended in water, and rechromatographed on the 4-B column equilibrated in 20 mM Hepes pH 7.6. Using each of the following three formula:
- 1.(183*OD230 nm−75.8*OD260 nm)*volume(ml)−2. ((OD235 nm−OD280 nm)/2.51)×volume−3. ((
OD 228.5 nm 31 OD234.5 nm)*0.37)×volume - protein amounts of 6-26 mg of reassembled VLP were determined.
- The reassembled AP205 VLPs were analyzed by EM as described above, agarose gel electrophoresis and SDS-PAGE under non-reducing conditions.
- The EM analysis of disassembled material shows that the treatment of AP205 VLP with guanidinium-chloride essentially disrupts the capsid assembly of the VLP. Reassembly of this disassembled material with an oligonucleotide yielded capsids (FIG. 44B), which were purified and further enriched by gel filtration (FIG. 44C). Two sizes of particles were obtained; particles of about 25 nm diameter and smaller particles are visible in the electron micrograph of FIG. 44C. No reassembly was obtained in the absence of oligonucleotides. Loading of the reassembled particles on agarose electrophoresis showed that the reassembled particles contained nucleic acids. Extraction of the nucleic acid content by phenol extraction and subsequent loading on an agarose gel stained with ethidium bromide revealed that the particles contained the oligonucleotide used for reassembly (FIG. 45A). Identity of the packaged oligonucleotide was controlled by loading a sample of this oligonucleotide side to side to the nucleic acid material extracted from the particles. The agarose gel where the reassembled AP205 VLP had been loaded and previously stained with ethidium bromide was subsequently stained with Coomassie blue, revealing comigration of the oligonucleotide content with the protein content of the particles (FIG. 45B), showing that the oligonucleotide had been packaged in the particles.
- Loading of the reassembled AP205 VLP on an SDS-PAGE gel, run in the absence of reducing agent (FIG. 46) demonstrated that the reassembled particles have formed disulfide bridges, as is the case for the untreated AP205 VLP. Moreover, the disulfide bridge pattern is identical to the untreated particles.
- Depicted on FIG. 44A is an electron micrograph of the disassembled AP205 VLP protein, while FIG. 44B shows the reassembled particles before purification. FIG. 3C shows an electron micrograph of the purified reassembled AP205 VLPs. The magnigication of FIGS.3A-C is 200 000×.
- FIGS. 45A and B show the reassembled AP205 VLPs analyzed by agarose gel electrophoresis. The samples loaded on the gel from both figures were, from left to right: untreated AP205 VLP, 3 samples with differing amount of AP205 VLP reassembled with CyCpG and purified, and untreated Qβ VLP. The gel on FIG. 45A was stained with ethidium bromide, while the same gel was stained with Coomassie blue in FIG. 45B.
- FIG. 46 depicts an SDS-PAGE analysis of reassembled AP205 VLP, loaded under non-reducing conditions. 5 samples were loaded on the gel. The samples loaded on the gel are, from left to right: Protein Marker, untreated wt Qβ, reassembled wt Qβ, untreated AP205 VLP, reassembled AP205 VLP. The Molecular Weight of the AP205 VLP subunit is 14.0 kDa, while the molecular weight of the Qβ subunit is 14.3 kDa (both molecular weights calculated with the N-terminal methionine). The disulfide linked multimers are each indicated by an arrow on the figure.
- C. Coupling of p33 Epitope (Sequence: H2N-KAVYNFATMGGCCOOH, with Free N- and C-Termini ) to AP205 VLPs Reassembled with CyCpG
- Reassembled AP205 VLP obtained as described in part B, and in 20 mM Hepes, 150 mM NaCl, pH 7.4 was reacted at a concentration of 1.4 mg/ml with a 5-fold excess of the crosslinker SMPH diluted from a 50 mM stock in DMSO for 30 minutes at 15° C. The obtained so-called derivatized AP205 VLP was dialyzed 2×2 hours against at least a 1000-fold volume of 20 mM Hepes, 150 mM NaCl, pH 7.4 buffer. The derivatized AP205 was reacted at a concentration of 1 mg/ml with either a 2.5-fold, or with a 5-fold excess of peptide, diluted from a 20 mM stock in DMSO, for 2 hours at 15° C. The sample was subsequently flash frozen in liquid nitrogen for storage.
- The result of the coupling reaction is shown in FIG. 6. A higher degree of coupling could be achieved by using a 5-fold excess of peptide rather than with a 2.5 fold excess of peptide in the coupling reaction.
- Depicted on FIG. 47 is the SDS-PAGE analysis of the coupling reaction. The following samples (from left to right) were loaded on the gel: protein marker; derivatized AP205 VLP (d); AP205 VLP coupled with a 2.5-fold excess of peptide, supernatant (s); AP205 VLP coupled with a 2.5-fold excess of peptide, pellet (p); AP205 VLP coupled with a 5-fold excess of peptide, supernatant (s); AP205 VLP coupled with a 5-fold excess of peptide, pellet (p).
- Mice were left untreated or immunized s.c. with 100 μg HBc33 alone, 20 nmol CyCpGpt, 100 μg HBc33 mixed with 20 nmol CyCpGpt, or 100 μg HBc33 packaged with CyCpGpt. Twelve days later, spleens were isolated and spleen weigths and splenic cellularity were assessed. CyCpGpt induced a massive increase in spleen weight and number of cells when given alone (FIG. 48). No such effect was seen with CyCpGpt packaged in HBc33 although this composition was able to induce protection against viral challenge (see EXAMPLE 4).
- Vaccinia Protection Assay
- Groups of three female C57B1/6 mice were immunized s.c. with 100 μg VLP coupled or fused to p33 alone, mixed with 20 nmol immunostimulatory nucleic acid or packaged with immunostimulatory nucleic acid. To assess antiviral immunity in peripheral tissues, mice were infected 7-9 days later, i.p., with 1.5×106 pfu recombinant vaccinia virus expressing the LCMV-glycoprotein (inclusive of the p33 peptide). Five days later the ovaries were collected and viral titers determined. Therefore, ovaries were ground with a homogenizer in Minimum Essential Medium (Gibco) containing 5% fetal bovine serum and supplemented with glutamine, Earls's salts and antibiotics (penicillin/streptomycin/amphotericin). The suspension was titrated in tenfold dilution steps onto BSC40 cells. After overnight incubation at 37° C., the adherent cell layer was stained with a solution consisting of 50% ethanol, 2% crystal violet and 150 mM NaCl for visualization of viral plaques. Non-immunized naive mice were used as control.
- LCMV Protection Assay
- Groups of three female C57B1/6 mice were immunized s.c. with 100 μg VLP coupled or fused to p33 alone or mixed with adjuvant/20 nmol CpG oligonucleotide. To examine systemic antiviral immunity mice were infected i.p. 11-13 days later with 200 pfu LCMV-WE. Four days later spleens were isolated and viral titers determined. The spleens were ground with a homogenizer in Minimum Essential Medium (Gibco) containing 2% fetal bovine serum and supplemented with glutamine, earls's salts and antibiotics (penicillin/streptomycin/amphotericin). The suspension was titrated in tenfold dilution steps onto MC57 cells. After incubation for one hour the cells were overlayed with DMEM containing 5% Fetal bovine serum, 1% methyl cellulose, and antibiotics (penicillin/streptomycin/amphotericin). Following incubation for 2 days at 37° C. the cells were assessed for LCMV infection by the intracellular staining procedure (which stains the viral nucleoprotein): Cells were fixed with 4% Formaldehyde for 30 min followed by a 20 min lysing step with 1% Triton X-100. Incubation for 1 hour with 10% fetal bovine serum blocked unspecific binding. Cells were stained with a rat anti-LCMV-antibody (VL-4) for 1 hour. A peroxidase-conjugated goat anti-rat-IgG (Jackson ImmunoResearch Laboratories, Inc) was used as secondary antibody followed by a colour reaction with ODP substrate according to standard procedures.
- The fusion protein of HBcAg with the peptide p33 (HBc33) was produced as described in EXAMPLE 1 and packaged with different CpG nucleic acids as described in EXAMPLE 11.
- 100 μg of vaccines were injected into mice and vaccina titers in the ovaries after recombinant vaccinia challenge were detected as described in EXAMPLE 19. Double stranded CyCpGpt (dsCyCpGpt) was produced by annealing 0.5 mM of DNA oligonucleotides CyCpGpt and CyCpG-rev-pt (Table I) in 15 mM Tris pH 7.5 by a 10 min heating step at 80° C. and subsequent cooling to RT®. Oligonucleotide hybridization was checked on a 20% TBE polyacrylamid gel (Novex).
- HBc33 capsids containing CyCpG, NKCpG, B-CpG and g10gacga-PS did induce CTL responses capable of completely inhibition viral infection (FIG. 49, FIG. 50). Protection was observed with nucleic acids contained phosphodiester or phosphothioate bonds (pt or PS). Even a double stranded oligonucleotide dsCyCpGpt was inducing protection against vaccinia challenge (FIG. 49).
- The fusion protein of HBcAg with the peptide p33 (HBc33) was produced as described in EXAMPLE 1 and packaged with oligonucleotide B-CpGpt as described in EXAMPLE 11. Peptide p33 was coupled to the RNA phage Qβ and oligonucleotide B-CpGpt were packaged as described in EXAMPLE 13. 100 μg, 30 μg, 10 μg or 3 μg of each vaccine was injected into mice and vaccina titers in the ovaries after recombinant vaccinia challenge were detected as described in EXAMPLE 19. 100 μg and 30 μg HBc33 and Qbx33 with packaged B-CpG did induce full protection against viral challenge while at lower concentrations partial or no protection was observed (FIG. 51).
- Transgenic mice expressing LCMV glycoprotein in pancreatic β islet cells (Ohasi et al., Cell 65, 305-317 (1991)) were immunized with 200 pfu LCMV, 100 μg HBc33 mixed with 20 nmol CyCpGpt, 100 pg HBc33 packaged with CyCpGpt or 100 μg p33 peptide mixed with 20 nmol CyCpGpt as control. Blood glucose levels were measured every four days with the Glucotrend Plus Glucose test kit (Roche). Mice with blood glucose levels larger 12 mM were considered diabetic. Immunization with LCMV induced diabetes in 4/4 animals at
day 12. CyCpGpt mixed with HBc33 only caused diabetes in 1/3 mice. Two of three mice immunized with HBc33 in which CyCpGpt was packaged develop diabetes atday 12, the third mouse atday 16. Immunization with peptide p33 mixed with CyCpGpt did not induce diabetes in three mice. This clearly shows that immunostimulatory nucleic acid packaged into VLP to which antigens are fused are much more efficient in enhancing a strong CTL response than a mixture of nucleic acid and antigen. They even induced a stronger response than antigen fused to VLP and mixed with the immunostimulatory nucleic acid. - C57BL/6 mice were subcutaneously immunized with 100 μg HBc33 alone, mixed with CyCpGpt or, alternatively, packaged with CyCpGpt. Untreated mice served as controls.
- 8 days after immunization blood lymphocytes were double-stained with PE-labeled p33-tetramers and FITC-coupled monoclonal anti-CD8 antibodies for p33-specific CD8+ T cell detection and percentage of p33-specific cells on the total CD8+ T cell population were determined by FACS analysis. Table II. Induction of p33-specific CD8+ T cells after vaccination with p33-VLP mixed or packaged with CpGs. Numbers correspond to means of frequencies (in percent) and standard deviations.
- HBc33 with packaged CyCpGpt induced a higher frequence of p33-specific CD8+T cells than HBc33 mixed with CyCpGpt (Table II). As the amount of packaged oligonucleotide is much lower (about {fraction (1/20)}) of the amount of oligonucleotide used in the mixed setting this clearly demonstrates that VLPs with packaged immunostimulatory nucleic acids are even more efficient in inducing high numbers of antigen-specific CD8+ T cells.
- Groups of C57BL/6 mice were subcutaneously primed with 100 μg p33-VLP given alone, mixed with 20 nmol CyCpGpt, or, alternatively, packaged with CyCpGpt. For detection of primary ex vivo cytotoxicity, effector cell suspensions were prepared from spleens of vaccinated
mice 9 days after priming. EL-4 cells were pulsed with p33 peptide (10-6 M, 2 h at 37° C. in 2% FCS MEM medium) and used in a 5 h 51Cr release assay.Frequencies of p33- Mice per Immunization specific CD8+ T cells group Untreated 0.2 2 HBc33 0.3 ± 0.1 4 HBc33 + CyCpGpt (mixed) 2.1 ± 0.9 5 HBc33/CyCpGpt (packaged) 4.3 ± 1.1 5 - FIG. 52 shows the primary ex vivo cytotoxicity of groups of C57BL/6 mice that were subcutaneously primed with 100 μg p33-VLP given alone (A), mixed with 20 nmol CyCpGpt (B), or, alternatively, packaged with CyCpGpt (C). Nine days later spleen cells were tested for direct ex vivo CTL activity in a 5-h51Cr-release assay on p33-pulsed (filled symbols) or on unpulsed (open symbols) EL-4 target cells at the indicated effector to target cell ratios. Radioactivity in cell culture supernatants was measured in a Cobra II Counter (Canberra Packard, Downers Growe, Ill.). Spontaneous release was always <10%. Two dilution series of effector cells per mouse were performed. In (A) two mice per group were used, whereas in (B) and (C) data from four mice per group are shown.
- FIG. 52 clearly demonstrates that 100 μg HBc33 alone did not induce primary in vivo CTL response while the same amount HBc33 mixed with 20 nmol CyCpGpt did induce a significant cytotoxicity. However, although the amount of packaged oligonucleotide was much lower (about 1/20) of the amount of oligonucleotide used in the mixed setting cytotoxicity was enhanced when 100 μg HBc33 with packaged CyCpGpt were used for immunization (FIG. 52).
- ZnSO4 Dependent Degradation of the Nucleic Acid Content of a VLP:
- 5 mg Qβ VLP (as determined by Bradford analysis) in 20 mM HEPES, pH 7.4, 150 mM NaCl was dialysed either against 2000 ml of 50 mM TrisHCl pH 8.0, 50 mM NaCl, 5% glycerol, 10 mM MgCl2 or 2000 ml of 4 mM HEPES, pH 7.4, 30 mM NaCl for 2 h at 4° C. in SnakeSkin™ pleated dialysis tubing (Pierce, Cat. No. 68035). Each of the dialysis buffers was exchanged once and dialysis was allowed to continue for another 16 h at 4° C. The dialysed solution was clarified for 10 minutes at 14 000 rpm (Eppendorf 5417 R, in fixed angle rotor F45-30-1 1, used in all the following steps) and proteinconcentration was again determined by Bradford analysis. Qβ VLPs in 50 mM TrisHCl pH 8.0, 50 mM NaCl, 5% glycerol, 10 mM MgCl2 were diluted with the corresponding buffer to a final protein concentration of 1 mg/ml whereas Qβ VLPs in 4 mM HEPES pH 7.4, 30 mM NaCl were diluted with the corresponding buffer to a final protein concentration of 0.5 mg/ml. This capsid-containing solutions were centrifuged again for 10 minutes at 14 000 rpm at 4° C. The supernatants were than incubated with ZnSO4 which was added to a final concentration of 2.5 mM for 24 h at 60° C. in an Eppendorf Thermomixer comfort at 550 rpm. After 24 h the solutions were clarified for 10 minutes at 14000 rpm and the sediment was discarded. The efficiency of the ZnSO4-dependent degradation of nucleic acids was confirmed by agarose gelelectrophoresis (FIG. 53). The supernatants were dialysed against 5000 ml of 4 mM HEPES pH 7.4, 30 mM NaCl for 2h at 4° C. 5000 ml buffer was exchanged once and dialysis continued over night at 4° C. The dialysed solution was clarified for 10 minutes at 14 000 rpm and 4° C., a negligible sediment was discarded and the protein concentration of the supernatants were determined by Bradford analysis.
- Similar results were obtained with copper chloride/phenanthroline/hydrogen peroxide treatment of capsids. Those skilled in the art know alternative non-enzymatic procedures for hydrolysis or RNA.
- Packaging of Oligodeoxynucleotides into ZnSO4-Treated VLPs:
- ZnSO4-treated and dialysed Qβ capsids with a protein concentration (as determined by Bradford analysis) beween 0.4 mg/ml and 0.9 mg/ml (which corresponds to a concentration of capsids of 159 nM and 357.5 nM, respectively) were used for the packaging of the oligodeoxynucleotides. The oligodeoxynucleotides were added at a 300-fold molar excess to the of QβVLP capsids and incubated for 3 h at 37° C. in an Eppendorf Thermomixer comfort at 550 rpm. After 3 h the reactions were centrifuged for 10 minutes at 14 000 rpm and 4° C. The supernatants were dialysed in Spectra/Por®CE DispoDialyzer with a MWCO 300'000 (Spectrum, Cat. No. 135 526) against 5000 ml of 20 mM HEPES pH 7.4, 150 mM NaCl for 8 h at 4° C. 5000 ml buffer was exchanged once and dialysis continued over night at 4° C. The protein concentration of the dialysed samples were determined by Bradford analysis. Qβ capsids and their nucleic acid contents were analyzed as described in Examples 11 and 13.
- FIG. 53 shows the analysis of ZnSO4-treated Qβ VLPs by agarose gelelectrophoresis: Qβ VLPs which had been purified from E. coli and dialysed either against buffer 1 (50 mM TrisHCl pH 8.0, 50 mM NaCl, 5% glycerol, 10 mM MgCl2) or buffer 2 (4 mM HEPES, pH 7.4, 30 mM NaCl) were incubated either without or in the presence of 2.5 mM zinc sulfate (ZnSO4) for 24 hrs at 60° C. After this treatment equal amounts of the indicated samples (5 μg protein) were mixed with loading dye and loaded onto a 0.8% agarose gel. After the run the gel was stained with ethidium bromide. Note that treatment of VLPs with ZnSO4 causes degradation of the nucleic acid content, while the mock-treated controls were unaffected.
- FIG. 54 shows the packaging of oligodeoxynucleotides into ZnSO4-treated VLPs and analysis of them by agarose gelelectrophoresis. Qβ VLPs which had been treated with 2.5 mM zinc sulfate (+ZnSO4) were dialysed against 4 mM HEPES, pH 7.4, 30 mM NaCl and incubated for 3 hrs at 37° C. with an excess of oligodeoxynucleotides (due to the dialysis the concentration of ZnSO4 was decreased by an order of 106, therefore its indicated only in parenthesis) After this incubation in presence of oligodeoxynucleotides, equal amounts of the indicated samples (5 μg protein) were mixed with loading dye and loaded onto a 0.8% agarose gel. After the run the gel was stained with ethidium bromide. Note that adding of oligodeoxynucleotides to ZnSO4-treated Qβ VLPs could restore the electrophoretical behaviour of the so treated capsids when compared to untreated Qβ capsids which had been purified from E. coli.
- FIG. 55 shows the analysis of nucleic acid content of ZnSO4- and oligodeoxynucleotide treated Qβ VLPs by Benzonase and proteinase K digestion and polyacrylamide TBE/Urea gelelectrophoresis: Oligodeoxynucleotides were packaged into ZnSO4-treated Qβ VLPs as described above. 25 μg of these VLPs were digested with 25 μl Benzonase (Merck, Cat. No. 1.01694.0001) according to the manufactures instructions. After heat-inactivation of the nuclease (30 minutes at 80° C.) the VLPs were treated with Proteinase K (final enzyme concentration was 0.5 mg/ml) according to the manufactures instructions. After 3 hrs the equivalent of 2 ug Qβ VLPs which had been digested by Benzonase and proteinase K were mixed with TBE-Urea sample buffer and loaded on a 15% polyacrylamide TBE-Urea gel (Novex®, Invitrogen Cat. No. EC6885). The capsids loaded in
lane 2 were treated with 2.5 mM ZnSO4 in presence of buffer 1 (see above), while the capsids loaded inlane 3 were treated with 2.5 mM ZnSO4 in presence of buffer 2 (see above). As qualitative as well as quantitative standard, 1 pmol, 5 pmol and 10 pmol of the oligodeoxynucleotide which was used for the reassembly reaction, was loaded onto the same gel (lanes 4-6). As control, Qβ capsids which had been purified from E. coli were treated exactly the same and analyzed on the same polyacrylamide TBE-Urea gel (lane 1). After the run was completed, the gel was fixed, equilibrated to neutral pH and stained with SYBR-Gold (Molecular Probes Cat. No. S-11494). Note that intact Qβ VLPs (which had been purified from E. coli) did not contain nucleic acids of similar size than those which had been extracted from ZnSO4- and oligodeoxynucleotide treated Qβ capsids. In addition, nucleic acids isolated from the latter VLPs were comigrating with the oligodeoxynucleotides which had been used in the reassembly reaction. This results confirmed that the used oligodeoxynucleotides were packaged into ZnSO4-treated Qβ capsids. - Mice were subcutaneously primed with 20 μg p33-VLPs containing immunostimulatory nucleic acids. Before immunization, p33-VLP preparations were extensively purified from unbound CpG-oligonucleotides via dialysis (see Example 2 and FIG. 5). 12 days later, blood was taken and frequencies of p33-specific T cells were determined by tetramer staining. The mice were boosted with 200 pfu of live LCMV strain WE and frequencies of specific T cells were determined 5 days later. Frequencies before boost were 3.5% +/−1.8% and after boost 15.5% +/−1.9%.
- Mice are subcutaneously primed with 20 μg p33-VLPs containing immunostimulatory nucleic acids. Before immunization, p33-VLP preparations are extensively purified from unbound CpG-oligonucleotides via dialysis (see Example 2 and FIG. 5). 12 days later, blood is taken and frequencies of p33-specific T cells are determined by tetramer staining. The mice are boosted with 106 pfu of recombinant vaccina virus expressing LCMV-GP and frequencies of specific T cells are determined 5 days later.
- Mice are subcutaneously primed with 20 μg p33-VLPs containing immunostimulatory nucleic acids. Before immunization, p33-VLP preparations are extensively purified from unbound CpG-oligonucleotides via dialysis (see Example 2 and FIG. 5). 12 days later, blood is taken and frequencies of p33-specific T cells are determined by tetramer staining. The mice are boosted with 1 pfu of recombinant canary pox virus expressing LCMV-GP and frequencies of specific T cells are determined 5 days later.
- Mice are infected intravenously with recombinant vacccina virus expressing LCMV-GP. 20 days later, blood is taken and frequencies of p33-specific T cells are determined by tetramer staining. The mice are boosted the same day with p33-VLP preparations containing immunostimulatory nucleic acids (see Example 2 and FIG. 5) and frequencies of specific T cells are determined 5 days later.
- Immunostimulatory ribonucleic acids such as poly (I:C) (Sigma) or synthetic double-stranded 30 mer of polyinosinic acid and polycytidylic acid either with phosphodiester or phosphorothiate backbone are dissolved in water. Alternatively, polydeoxyinosinic acid and polydeoxyinosinic acid are used to prepare a double stranded poly(I:C) analogon. HBc33 VLPs and Qβ VLPs are treated with RNAse as described in Examples 11, 13 or 25 and nucleic acids are added at 1, 10 and 100 nmol/ml in 0.2×HBS and incubated for 3 h at 37° C. in a thermomixer. Excess nucleic acids are removed by enzymatic hydrolysis or dialysis and analysed as described in Example 11, 13 and 25.
- Alternatively, immunostimulatory ribonucleic acids and their analoga are packaged during reassembly of Qβ coat proteins as described in Examples 14, 15, 16. Reassembly is performed by adding β-mercaptoethanol to the 10 ml dimer fraction to a final concentration of 10%, and 300 μl of a solution of nucleic acid, resulting in a 1, 10 and 100 molar excess over capsid concentration, are added. The reassembly mixtures are first dialyzed against 30 ml NET buffer containing 10% beta-mercaptoethanol for 2 hours at 4° C., and then dialyzed in a continuous mode, with a flow of NET buffer of 8 ml/h over 4 days at 4° C. The reassembly mixtures are then desalted against water by dialysis, with 6 buffer exchanges (4×100 ml, 2×1 liter). Reassembled Qβ VLPs are then isolated by sucrose gradient centrifugation as described in Example 14 or by gel filtration as described in Example 16.
-
0 SEQUENCE LISTING <160> NUMBER OF SEQ ID NOS: 73 <210> SEQ ID NO 10 <211> LENGTH: 132 <212> TYPE: PRT <213> ORGANISM: Bacteriophage Q-beta <400> SEQUENCE: 10 Ala Lys Leu Glu Thr Val Thr Leu Gly Asn Ile Gly Lys Asp Gly Lys 1 5 10 15 Gln Thr Leu Val Leu Asn Pro Arg Gly Val Asn Pro Thr Asn Gly Val 20 25 30 Ala Ser Leu Ser Gln Ala Gly Ala Val Pro Ala Leu Glu Lys Arg Val 35 40 45 Thr Val Ser Val Ser Gln Pro Ser Arg Asn Arg Lys Asn Tyr Lys Val 50 55 60 Gln Val Lys Ile Gln Asn Pro Thr Ala Cys Thr Ala Asn Gly Ser Cys 65 70 75 80 Asp Pro Ser Val Thr Arg Gln Ala Tyr Ala Asp Val Thr Phe Ser Phe 85 90 95 Thr Gln Tyr Ser Thr Asp Glu Glu Arg Ala Phe Val Arg Thr Glu Leu 100 105 110 Ala Ala Leu Leu Ala Ser Pro Leu Leu Ile Asp Ala Ile Asp Gln Leu 115 120 125 Asn Pro Ala Tyr 130 <210> SEQ ID NO 11 <211> LENGTH: 328 <212> TYPE: PRT <213> ORGANISM: Bacteriophage Q-beta <400> SEQUENCE: 11 Met Ala Lys Leu Glu Thr Val Thr Leu Gly Asn Ile Gly Lys Asp Gly 1 5 10 15 Lys Gln Thr Leu Val Leu Asn Pro Arg Gly Val Asn Pro Thr Asn Gly 20 25 30 Val Ala Ser Leu Ser Gln Ala Gly Ala Val Pro Ala Leu Glu Lys Arg 35 40 45 Val Thr Val Ser Val Ser Gln Pro Ser Arg Asn Arg Lys Asn Tyr Lys 50 55 60 Val Gln Val Lys Ile Gln Asn Pro Thr Ala Cys Thr Ala Asn Gly Ser 65 70 75 80 Cys Asp Pro Ser Val Thr Arg Gln Ala Tyr Ala Asp Val Thr Phe Ser 85 90 95 Phe Thr Gln Tyr Ser Thr Asp Glu Glu Arg Ala Phe Val Arg Thr Glu 100 105 110 Leu Ala Ala Leu Leu Ala Ser Pro Leu Leu Ile Asp Ala Ile Asp Gln 115 120 125 Leu Asn Pro Ala Tyr Trp Leu Leu Ile Ala Gly Gly Gly Ser Gly Ser 130 135 140 Lys Pro Asp Pro Val Ile Pro Asp Pro Pro Ile Asp Pro Pro Pro Gly 145 150 155 160 Thr Gly Lys Tyr Thr Cys Pro Phe Ala Ile Trp Ser Leu Glu Glu Val 165 170 175 Tyr Glu Pro Pro Thr Lys Asn Arg Pro Trp Pro Ile Tyr Asn Ala Val 180 185 190 Glu Leu Gln Pro Arg Glu Phe Asp Val Ala Leu Lys Asp Leu Leu Gly 195 200 205 Asn Thr Lys Trp Arg Asp Trp Asp Ser Arg Leu Ser Tyr Thr Thr Phe 210 215 220 Arg Gly Cys Arg Gly Asn Gly Tyr Ile Asp Leu Asp Ala Thr Tyr Leu 225 230 235 240 Ala Thr Asp Gln Ala Met Arg Asp Gln Lys Tyr Asp Ile Arg Glu Gly 245 250 255 Lys Lys Pro Gly Ala Phe Gly Asn Ile Glu Arg Phe Ile Tyr Leu Lys 260 265 270 Ser Ile Asn Ala Tyr Cys Ser Leu Ser Asp Ile Ala Ala Tyr His Ala 275 280 285 Asp Gly Val Ile Val Gly Phe Trp Arg Asp Pro Ser Ser Gly Gly Ala 290 295 300 Ile Pro Phe Asp Phe Thr Lys Phe Asp Lys Thr Lys Cys Pro Ile Gln 305 310 315 320 Ala Val Ile Val Val Pro Arg Ala 325 <210> SEQ ID NO 12 <211> LENGTH: 129 <212> TYPE: PRT <213> ORGANISM: Bacteriophage R17 <400> SEQUENCE: 12 Ala Ser Asn Phe Thr Gln Phe Val Leu Val Asn Asp Gly Gly Thr Gly 1 5 10 15 Asn Val Thr Val Ala Pro Ser Asn Phe Ala Asn Gly Val Ala Glu Trp 20 25 30 Ile Ser Ser Asn Ser Arg Ser Gln Ala Tyr Lys Val Thr Cys Ser Val 35 40 45 Arg Gln Ser Ser Ala Gln Asn Arg Lys Tyr Thr Ile Lys Val Glu Val 50 55 60 Pro Lys Val Ala Thr Gln Thr Val Gly Gly Val Glu Leu Pro Val Ala 65 70 75 80 Ala Trp Arg Ser Tyr Leu Asn Met Glu Leu Thr Ile Pro Ile Phe Ala 85 90 95 Thr Asn Ser Asp Cys Glu Leu Ile Val Lys Ala Met Gln Gly Leu Leu 100 105 110 Lys Asp Gly Asn Pro Ile Pro Ser Ala Ile Ala Ala Asn Ser Gly Ile 115 120 125 Tyr <210> SEQ ID NO 13 <211> LENGTH: 130 <212> TYPE: PRT <213> ORGANISM: Bacteriophage fr <400> SEQUENCE: 13 Met Ala Ser Asn Phe Glu Glu Phe Val Leu Val Asp Asn Gly Gly Thr 1 5 10 15 Gly Asp Val Lys Val Ala Pro Ser Asn Phe Ala Asn Gly Val Ala Glu 20 25 30 Trp Ile Ser Ser Asn Ser Arg Ser Gln Ala Tyr Lys Val Thr Cys Ser 35 40 45 Val Arg Gln Ser Ser Ala Asn Asn Arg Lys Tyr Thr Val Lys Val Glu 50 55 60 Val Pro Lys Val Ala Thr Gln Val Gln Gly Gly Val Glu Leu Pro Val 65 70 75 80 Ala Ala Trp Arg Ser Tyr Met Asn Met Glu Leu Thr Ile Pro Val Phe 85 90 95 Ala Thr Asn Asp Asp Cys Ala Leu Ile Val Lys Ala Leu Gln Gly Thr 100 105 110 Phe Lys Thr Gly Asn Pro Ile Ala Thr Ala Ile Ala Ala Asn Ser Gly 115 120 125 Ile Tyr 130 <210> SEQ ID NO 14 <211> LENGTH: 130 <212> TYPE: PRT <213> ORGANISM: Bacteriophage GA <400> SEQUENCE: 14 Met Ala Thr Leu Arg Ser Phe Val Leu Val Asp Asn Gly Gly Thr Gly 1 5 10 15 Asn Val Thr Val Val Pro Val Ser Asn Ala Asn Gly Val Ala Glu Trp 20 25 30 Leu Ser Asn Asn Ser Arg Ser Gln Ala Tyr Arg Val Thr Ala Ser Tyr 35 40 45 Arg Ala Ser Gly Ala Asp Lys Arg Lys Tyr Ala Ile Lys Leu Glu Val 50 55 60 Pro Lys Ile Val Thr Gln Val Val Asn Gly Val Glu Leu Pro Gly Ser 65 70 75 80 Ala Trp Lys Ala Tyr Ala Ser Ile Asp Leu Thr Ile Pro Ile Phe Ala 85 90 95 Ala Thr Asp Asp Val Thr Val Ile Ser Lys Ser Leu Ala Gly Leu Phe 100 105 110 Lys Val Gly Asn Pro Ile Ala Glu Ala Ile Ser Ser Gln Ser Gly Phe 115 120 125 Tyr Ala 130 <210> SEQ ID NO 15 <211> LENGTH: 132 <212> TYPE: PRT <213> ORGANISM: Bacteriophage SP <400> SEQUENCE: 15 Met Ala Lys Leu Asn Gln Val Thr Leu Ser Lys Ile Gly Lys Asn Gly 1 5 10 15 Asp Gln Thr Leu Thr Leu Thr Pro Arg Gly Val Asn Pro Thr Asn Gly 20 25 30 Val Ala Ser Leu Ser Glu Ala Gly Ala Val Pro Ala Leu Glu Lys Arg 35 40 45 Val Thr Val Ser Val Ala Gln Pro Ser Arg Asn Arg Lys Asn Phe Lys 50 55 60 Val Gln Ile Lys Leu Gln Asn Pro Thr Ala Cys Thr Arg Asp Ala Cys 65 70 75 80 Asp Pro Ser Val Thr Arg Ser Ala Phe Ala Asp Val Thr Leu Ser Phe 85 90 95 Thr Ser Tyr Ser Thr Asp Glu Glu Arg Ala Leu Ile Arg Thr Glu Leu 100 105 110 Ala Ala Leu Leu Ala Asp Pro Leu Ile Val Asp Ala Ile Asp Asn Leu 115 120 125 Asn Pro Ala Tyr 130 <210> SEQ ID NO 16 <211> LENGTH: 329 <212> TYPE: PRT <213> ORGANISM: Bacteriophage SP <400> SEQUENCE: 16 Ala Lys Leu Asn Gln Val Thr Leu Ser Lys Ile Gly Lys Asn Gly Asp 1 5 10 15 Gln Thr Leu Thr Leu Thr Pro Arg Gly Val Asn Pro Thr Asn Gly Val 20 25 30 Ala Ser Leu Ser Glu Ala Gly Ala Val Pro Ala Leu Glu Lys Arg Val 35 40 45 Thr Val Ser Val Ala Gln Pro Ser Arg Asn Arg Lys Asn Phe Lys Val 50 55 60 Gln Ile Lys Leu Gln Asn Pro Thr Ala Cys Thr Arg Asp Ala Cys Asp 65 70 75 80 Pro Ser Val Thr Arg Ser Ala Phe Ala Asp Val Thr Leu Ser Phe Thr 85 90 95 Ser Tyr Ser Thr Asp Glu Glu Arg Ala Leu Ile Arg Thr Glu Leu Ala 100 105 110 Ala Leu Leu Ala Asp Pro Leu Ile Val Asp Ala Ile Asp Asn Leu Asn 115 120 125 Pro Ala Tyr Trp Ala Ala Leu Leu Val Ala Ser Ser Gly Gly Gly Asp 130 135 140 Asn Pro Ser Asp Pro Asp Val Pro Val Val Pro Asp Val Lys Pro Pro 145 150 155 160 Asp Gly Thr Gly Arg Tyr Lys Cys Pro Phe Ala Cys Tyr Arg Leu Gly 165 170 175 Ser Ile Tyr Glu Val Gly Lys Glu Gly Ser Pro Asp Ile Tyr Glu Arg 180 185 190 Gly Asp Glu Val Ser Val Thr Phe Asp Tyr Ala Leu Glu Asp Phe Leu 195 200 205 Gly Asn Thr Asn Trp Arg Asn Trp Asp Gln Arg Leu Ser Asp Tyr Asp 210 215 220 Ile Ala Asn Arg Arg Arg Cys Arg Gly Asn Gly Tyr Ile Asp Leu Asp 225 230 235 240 Ala Thr Ala Met Gln Ser Asp Asp Phe Val Leu Ser Gly Arg Tyr Gly 245 250 255 Val Arg Lys Val Lys Phe Pro Gly Ala Phe Gly Ser Ile Lys Tyr Leu 260 265 270 Leu Asn Ile Gln Gly Asp Ala Trp Leu Asp Leu Ser Glu Val Thr Ala 275 280 285 Tyr Arg Ser Tyr Gly Met Val Ile Gly Phe Trp Thr Asp Ser Lys Ser 290 295 300 Pro Gln Leu Pro Thr Asp Phe Thr Gln Phe Asn Ser Ala Asn Cys Pro 305 310 315 320 Val Gln Thr Val Ile Ile Ile Pro Ser 325 <210> SEQ ID NO 17 <211> LENGTH: 130 <212> TYPE: PRT <213> ORGANISM: Bacteriophage MS2 <400> SEQUENCE: 17 Met Ala Ser Asn Phe Thr Gln Phe Val Leu Val Asp Asn Gly Gly Thr 1 5 10 15 Gly Asp Val Thr Val Ala Pro Ser Asn Phe Ala Asn Gly Val Ala Glu 20 25 30 Trp Ile Ser Ser Asn Ser Arg Ser Gln Ala Tyr Lys Val Thr Cys Ser 35 40 45 Val Arg Gln Ser Ser Ala Gln Asn Arg Lys Tyr Thr Ile Lys Val Glu 50 55 60 Val Pro Lys Val Ala Thr Gln Thr Val Gly Gly Val Glu Leu Pro Val 65 70 75 80 Ala Ala Trp Arg Ser Tyr Leu Asn Met Glu Leu Thr Ile Pro Ile Phe 85 90 95 Ala Thr Asn Ser Asp Cys Glu Leu Ile Val Lys Ala Met Gln Gly Leu 100 105 110 Leu Lys Asp Gly Asn Pro Ile Pro Ser Ala Ile Ala Ala Asn Ser Gly 115 120 125 Ile Tyr 130 <210> SEQ ID NO 18 <211> LENGTH: 133 <212> TYPE: PRT <213> ORGANISM: Bacteriophage M11 <400> SEQUENCE: 18 Met Ala Lys Leu Gln Ala Ile Thr Leu Ser Gly Ile Gly Lys Lys Gly 1 5 10 15 Asp Val Thr Leu Asp Leu Asn Pro Arg Gly Val Asn Pro Thr Asn Gly 20 25 30 Val Ala Ala Leu Ser Glu Ala Gly Ala Val Pro Ala Leu Glu Lys Arg 35 40 45 Val Thr Ile Ser Val Ser Gln Pro Ser Arg Asn Arg Lys Asn Tyr Lys 50 55 60 Val Gln Val Lys Ile Gln Asn Pro Thr Ser Cys Thr Ala Ser Gly Thr 65 70 75 80 Cys Asp Pro Ser Val Thr Arg Ser Ala Tyr Ser Asp Val Thr Phe Ser 85 90 95 Phe Thr Gln Tyr Ser Thr Val Glu Glu Arg Ala Leu Val Arg Thr Glu 100 105 110 Leu Gln Ala Leu Leu Ala Asp Pro Met Leu Val Asn Ala Ile Asp Asn 115 120 125 Leu Asn Pro Ala Tyr 130 <210> SEQ ID NO 19 <211> LENGTH: 133 <212> TYPE: PRT <213> ORGANISM: Bacteriophage MX1 <400> SEQUENCE: 19 Met Ala Lys Leu Gln Ala Ile Thr Leu Ser Gly Ile Gly Lys Asn Gly 1 5 10 15 Asp Val Thr Leu Asn Leu Asn Pro Arg Gly Val Asn Pro Thr Asn Gly 20 25 30 Val Ala Ala Leu Ser Glu Ala Gly Ala Val Pro Ala Leu Glu Lys Arg 35 40 45 Val Thr Ile Ser Val Ser Gln Pro Ser Arg Asn Arg Lys Asn Tyr Lys 50 55 60 Val Gln Val Lys Ile Gln Asn Pro Thr Ser Cys Thr Ala Ser Gly Thr 65 70 75 80 Cys Asp Pro Ser Val Thr Arg Ser Ala Tyr Ala Asp Val Thr Phe Ser 85 90 95 Phe Thr Gln Tyr Ser Thr Asp Glu Glu Arg Ala Leu Val Arg Thr Glu 100 105 110 Leu Lys Ala Leu Leu Ala Asp Pro Met Leu Ile Asp Ala Ile Asp Asn 115 120 125 Leu Asn Pro Ala Tyr 130 <210> SEQ ID NO 20 <211> LENGTH: 330 <212> TYPE: PRT <213> ORGANISM: Bacteriophage NL95 <400> SEQUENCE: 20 Met Ala Lys Leu Asn Lys Val Thr Leu Thr Gly Ile Gly Lys Ala Gly 1 5 10 15 Asn Gln Thr Leu Thr Leu Thr Pro Arg Gly Val Asn Pro Thr Asn Gly 20 25 30 Val Ala Ser Leu Ser Glu Ala Gly Ala Val Pro Ala Leu Glu Lys Arg 35 40 45 Val Thr Val Ser Val Ala Gln Pro Ser Arg Asn Arg Lys Asn Tyr Lys 50 55 60 Val Gln Ile Lys Leu Gln Asn Pro Thr Ala Cys Thr Lys Asp Ala Cys 65 70 75 80 Asp Pro Ser Val Thr Arg Ser Gly Ser Arg Asp Val Thr Leu Ser Phe 85 90 95 Thr Ser Tyr Ser Thr Glu Arg Glu Arg Ala Leu Ile Arg Thr Glu Leu 100 105 110 Ala Ala Leu Leu Lys Asp Asp Leu Ile Val Asp Ala Ile Asp Asn Leu 115 120 125 Asn Pro Ala Tyr Trp Ala Ala Leu Leu Ala Ala Ser Pro Gly Gly Gly 130 135 140 Asn Asn Pro Tyr Pro Gly Val Pro Asp Ser Pro Asn Val Lys Pro Pro 145 150 155 160 Gly Gly Thr Gly Thr Tyr Arg Cys Pro Phe Ala Cys Tyr Arg Arg Gly 165 170 175 Glu Leu Ile Thr Glu Ala Lys Asp Gly Ala Cys Ala Leu Tyr Ala Cys 180 185 190 Gly Ser Glu Ala Leu Val Glu Phe Glu Tyr Ala Leu Glu Asp Phe Leu 195 200 205 Gly Asn Glu Phe Trp Arg Asn Trp Asp Gly Arg Leu Ser Lys Tyr Asp 210 215 220 Ile Glu Thr His Arg Arg Cys Arg Gly Asn Gly Tyr Val Asp Leu Asp 225 230 235 240 Ala Ser Val Met Gln Ser Asp Glu Tyr Val Leu Ser Gly Ala Tyr Asp 245 250 255 Val Val Lys Met Gln Pro Pro Gly Thr Phe Asp Ser Pro Arg Tyr Tyr 260 265 270 Leu His Leu Met Asp Gly Ile Tyr Val Asp Leu Ala Glu Val Thr Ala 275 280 285 Tyr Arg Ser Tyr Gly Met Val Ile Gly Phe Trp Thr Asp Ser Lys Ser 290 295 300 Pro Gln Leu Pro Thr Asp Phe Thr Arg Phe Asn Arg His Asn Cys Pro 305 310 315 320 Val Gln Thr Val Ile Val Ile Pro Ser Leu 325 330 <210> SEQ ID NO 21 <211> LENGTH: 129 <212> TYPE: PRT <213> ORGANISM: Bacteriophage f2 <400> SEQUENCE: 21 Ala Ser Asn Phe Thr Gln Phe Val Leu Val Asn Asp Gly Gly Thr Gly 1 5 10 15 Asn Val Thr Val Ala Pro Ser Asn Phe Ala Asn Gly Val Ala Glu Trp 20 25 30 Ile Ser Ser Asn Ser Arg Ser Gln Ala Tyr Lys Val Thr Cys Ser Val 35 40 45 Arg Gln Ser Ser Ala Gln Asn Arg Lys Tyr Thr Ile Lys Val Glu Val 50 55 60 Pro Lys Val Ala Thr Gln Thr Val Gly Gly Val Glu Leu Pro Val Ala 65 70 75 80 Ala Trp Arg Ser Tyr Leu Asn Leu Glu Leu Thr Ile Pro Ile Phe Ala 85 90 95 Thr Asn Ser Asp Cys Glu Leu Ile Val Lys Ala Met Gln Gly Leu Leu 100 105 110 Lys Asp Gly Asn Pro Ile Pro Ser Ala Ile Ala Ala Asn Ser Gly Ile 115 120 125 Tyr <210> SEQ ID NO 22 <211> LENGTH: 128 <212> TYPE: PRT <213> ORGANISM: Bacteriophage PP7 <400> SEQUENCE: 22 Met Ser Lys Thr Ile Val Leu Ser Val Gly Glu Ala Thr Arg Thr Leu 1 5 10 15 Thr Glu Ile Gln Ser Thr Ala Asp Arg Gln Ile Phe Glu Glu Lys Val 20 25 30 Gly Pro Leu Val Gly Arg Leu Arg Leu Thr Ala Ser Leu Arg Gln Asn 35 40 45 Gly Ala Lys Thr Ala Tyr Arg Val Asn Leu Lys Leu Asp Gln Ala Asp 50 55 60 Val Val Asp Cys Ser Thr Ser Val Cys Gly Glu Leu Pro Lys Val Arg 65 70 75 80 Tyr Thr Gln Val Trp Ser His Asp Val Thr Ile Val Ala Asn Ser Thr 85 90 95 Glu Ala Ser Arg Lys Ser Leu Tyr Asp Leu Thr Lys Ser Leu Val Ala 100 105 110 Thr Ser Gln Val Glu Asp Leu Val Val Asn Leu Val Pro Leu Gly Arg 115 120 125 <210> SEQ ID NO 23 <211> LENGTH: 132 <212> TYPE: PRT <213> ORGANISM: Bacteriophage Q-beta <400> SEQUENCE: 23 Ala Lys Leu Glu Thr Val Thr Leu Gly Asn Ile Gly Arg Asp Gly Lys 1 5 10 15 Gln Thr Leu Val Leu Asn Pro Arg Gly Val Asn Pro Thr Asn Gly Val 20 25 30 Ala Ser Leu Ser Gln Ala Gly Ala Val Pro Ala Leu Glu Lys Arg Val 35 40 45 Thr Val Ser Val Ser Gln Pro Ser Arg Asn Arg Lys Asn Tyr Lys Val 50 55 60 Gln Val Lys Ile Gln Asn Pro Thr Ala Cys Thr Ala Asn Gly Ser Cys 65 70 75 80 Asp Pro Ser Val Thr Arg Gln Lys Tyr Ala Asp Val Thr Phe Ser Phe 85 90 95 Thr Gln Tyr Ser Thr Asp Glu Glu Arg Ala Phe Val Arg Thr Glu Leu 100 105 110 Ala Ala Leu Leu Ala Ser Pro Leu Leu Ile Asp Ala Ile Asp Gln Leu 115 120 125 Asn Pro Ala Tyr 130 <210> SEQ ID NO 24 <211> LENGTH: 132 <212> TYPE: PRT <213> ORGANISM: Bacteriophage Q-beta <400> SEQUENCE: 24 Ala Lys Leu Glu Thr Val Thr Leu Gly Lys Ile Gly Lys Asp Gly Lys 1 5 10 15 Gln Thr Leu Val Leu Asn Pro Arg Gly Val Asn Pro Thr Asn Gly Val 20 25 30 Ala Ser Leu Ser Gln Ala Gly Ala Val Pro Ala Leu Glu Lys Arg Val 35 40 45 Thr Val Ser Val Ser Gln Pro Ser Arg Asn Arg Lys Asn Tyr Lys Val 50 55 60 Gln Val Lys Ile Gln Asn Pro Thr Ala Cys Thr Ala Asn Gly Ser Cys 65 70 75 80 Asp Pro Ser Val Thr Arg Gln Lys Tyr Ala Asp Val Thr Phe Ser Phe 85 90 95 Thr Gln Tyr Ser Thr Asp Glu Glu Arg Ala Phe Val Arg Thr Glu Leu 100 105 110 Ala Ala Leu Leu Ala Ser Pro Leu Leu Ile Asp Ala Ile Asp Gln Leu 115 120 125 Asn Pro Ala Tyr 130 <210> SEQ ID NO 25 <211> LENGTH: 132 <212> TYPE: PRT <213> ORGANISM: Bacteriophage Q-beta <400> SEQUENCE: 25 Ala Arg Leu Glu Thr Val Thr Leu Gly Asn Ile Gly Arg Asp Gly Lys 1 5 10 15 Gln Thr Leu Val Leu Asn Pro Arg Gly Val Asn Pro Thr Asn Gly Val 20 25 30 Ala Ser Leu Ser Gln Ala Gly Ala Val Pro Ala Leu Glu Lys Arg Val 35 40 45 Thr Val Ser Val Ser Gln Pro Ser Arg Asn Arg Lys Asn Tyr Lys Val 50 55 60 Gln Val Lys Ile Gln Asn Pro Thr Ala Cys Thr Ala Asn Gly Ser Cys 65 70 75 80 Asp Pro Ser Val Thr Arg Gln Lys Tyr Ala Asp Val Thr Phe Ser Phe 85 90 95 Thr Gln Tyr Ser Thr Asp Glu Glu Arg Ala Phe Val Arg Thr Glu Leu 100 105 110 Ala Ala Leu Leu Ala Ser Pro Leu Leu Ile Asp Ala Ile Asp Gln Leu 115 120 125 Asn Pro Ala Tyr 130 <210> SEQ ID NO 26 <211> LENGTH: 132 <212> TYPE: PRT <213> ORGANISM: Bacteriophage Q-beta <400> SEQUENCE: 26 Ala Lys Leu Glu Thr Val Thr Leu Gly Asn Ile Gly Lys Asp Gly Arg 1 5 10 15 Gln Thr Leu Val Leu Asn Pro Arg Gly Val Asn Pro Thr Asn Gly Val 20 25 30 Ala Ser Leu Ser Gln Ala Gly Ala Val Pro Ala Leu Glu Lys Arg Val 35 40 45 Thr Val Ser Val Ser Gln Pro Ser Arg Asn Arg Lys Asn Tyr Lys Val 50 55 60 Gln Val Lys Ile Gln Asn Pro Thr Ala Cys Thr Ala Asn Gly Ser Cys 65 70 75 80 Asp Pro Ser Val Thr Arg Gln Lys Tyr Ala Asp Val Thr Phe Ser Phe 85 90 95 Thr Gln Tyr Ser Thr Asp Glu Glu Arg Ala Phe Val Arg Thr Glu Leu 100 105 110 Ala Ala Leu Leu Ala Ser Pro Leu Leu Ile Asp Ala Ile Asp Gln Leu 115 120 125 Asn Pro Ala Tyr 130 <210> SEQ ID NO 27 <211> LENGTH: 132 <212> TYPE: PRT <213> ORGANISM: Bacteriophage Q-beta <400> SEQUENCE: 27 Ala Arg Leu Glu Thr Val Thr Leu Gly Asn Ile Gly Lys Asp Gly Arg 1 5 10 15 Gln Thr Leu Val Leu Asn Pro Arg Gly Val Asn Pro Thr Asn Gly Val 20 25 30 Ala Ser Leu Ser Gln Ala Gly Ala Val Pro Ala Leu Glu Lys Arg Val 35 40 45 Thr Val Ser Val Ser Gln Pro Ser Arg Asn Arg Lys Asn Tyr Lys Val 50 55 60 Gln Val Lys Ile Gln Asn Pro Thr Ala Cys Thr Ala Asn Gly Ser Cys 65 70 75 80 Asp Pro Ser Val Thr Arg Gln Lys Tyr Ala Asp Val Thr Phe Ser Phe 85 90 95 Thr Gln Tyr Ser Thr Asp Glu Glu Arg Ala Phe Val Arg Thr Glu Leu 100 105 110 Ala Ala Leu Leu Ala Ser Pro Leu Leu Ile Asp Ala Ile Asp Gln Leu 115 120 125 Asn Pro Ala Tyr 130 <210> SEQ ID NO 28 <211> LENGTH: 184 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 28 Met Asp Ile Asp Pro Tyr Glu Phe Gly Ala Thr Val Glu Leu Leu Ser 1 5 10 15 Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr 20 25 30 Ala Ser Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser 35 40 45 Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu 50 55 60 Met Thr Leu Ala Thr Trp Val Gly Asn Asn Leu Glu Asp Pro Ala Ser 65 70 75 80 Arg Asp Leu Val Val Asn Tyr Val Asn Thr Asn Met Gly Leu Lys Ile 85 90 95 Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu 100 105 110 Thr Val Leu Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro 115 120 125 Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu 130 135 140 Thr Thr Val Val Arg Arg Arg Asp Arg Gly Arg Ser Pro Arg Arg Arg 145 150 155 160 Thr Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg 165 170 175 Ser Gln Ser Arg Glu Ser Gln Cys 180 <210> SEQ ID NO 29 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 29 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Ile 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Thr Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Gly Ser Gln Cys 180 <210> SEQ ID NO 30 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 30 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Thr 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Thr Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Cys Val Ile Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Gly Ser Gln Cys 180 <210> SEQ ID NO 31 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 31 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Ile Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 32 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 32 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Asn Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Ile Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 33 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 33 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Thr Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Cys Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Glu Ser Gln Cys 180 <210> SEQ ID NO 34 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 34 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Val Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Val Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 35 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 35 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Asp Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Val Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Val Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 36 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 36 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro Gln 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Ile Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 37 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 37 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Lys Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Gly Ser Gln Cys 210 <210> SEQ ID NO 38 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 38 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Phe Arg Asp Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Ala 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Asp Thr Val Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Ser Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Cys Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Glu Ser Gln Cys 180 <210> SEQ ID NO 39 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 39 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Thr Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Glu Ser Gln Cys 180 <210> SEQ ID NO 40 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 40 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg His Ala Ile Leu Cys Trp Gly Asp Leu Arg Thr 85 90 95 Leu Ala Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Ile Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Tyr Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 41 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 41 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Asp Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Phe Arg Asp Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Ala Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Gln Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Cys 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 42 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Artificial Sequence <220> FEATURE: <223> OTHER INFORMATION: Synthetic human Hepatitis B virus core protein gene <400> SEQUENCE: 42 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Leu Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Thr Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Glu Ser Gln Cys 180 <210> SEQ ID NO 43 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 43 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp Leu Met Ser 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ile Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 44 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 44 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Asp Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Thr Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Glu Ser Gln Cys 180 <210> SEQ ID NO 45 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 45 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Thr Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Glu Ser Gln Cys 180 <210> SEQ ID NO 46 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 46 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Asp Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Ala Asn Leu Glu Asp Pro Ala 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Thr Val Val Arg Arg Arg Gly Arg Thr Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Glu Ser Gln Cys 180 <210> SEQ ID NO 47 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 47 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Asp Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 48 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 48 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 49 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 49 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Thr Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Gln Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ala Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 50<211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 50 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Phe Glu Cys Ser Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Ile Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 51<211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <220> FEATURE: <221> NAME/KEY: MISC_FEATURE <222> LOCATION: (28)..(28) <223> OTHER INFORMATION: Xaa can be any amino acid <400> SEQUENCE: 51 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Xaa Asp Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp Leu Ile Thr 85 90 95 Leu Ser Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Thr Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Thr Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 52 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 52 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Asn Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 53 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 53 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Cys Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 54 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 54 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Pro Gln Cys 210 <210> SEQ ID NO 55 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 55 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Ser Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 56 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 56 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Leu Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 57 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 57 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Lys Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 58 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 58 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ala 50 55 60 Ala Leu Tyr Arg Asp Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Thr Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Leu Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 59 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 59 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Ser Met Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Tyr Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Thr Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Gly Asn Leu Gln Asp Pro Thr 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Val Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Val Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Gln Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Cys Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Glu Ser Gln Cys 180 <210> SEQ ID NO 60 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 60 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg His Val Phe Leu Cys Trp Gly Asp 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Thr 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Thr Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Glu Ser Gln Cys 180 <210> SEQ ID NO 61 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 61 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp Leu Thr Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 62<211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 62 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Asp Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Ile Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 63<211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 63 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Val 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Val Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Thr Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Ala Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Glu Ser Gln Cys 180 <210> SEQ ID NO 64 <211> LENGTH: 213 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 64 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp Leu Met Asn 85 90 95 Leu Ala Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Val Ser Arg Asp 100 105 110 Leu Val Val Gly Tyr Val Asn Thr Thr Val Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser 195 200 205 Arg Glu Ser Gln Cys 210 <210> SEQ ID NO 65 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 65 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Asp Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Thr Val Val Arg Arg Arg Gly Arg Thr Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Glu Ser Gln Cys 180 <210> SEQ ID NO 66 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 66 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Ala Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Ile Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 67 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 67 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Thr Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Val Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 68 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 68 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Arg Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Thr Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 69 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 69 Met Gln Leu Phe His Leu Cys Leu Val Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ala 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Asn Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Asn Tyr Val Asn Thr Asn Met Gly Leu Lys Ile Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Leu Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 70 <211> LENGTH: 212 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 70 Met Gln Leu Phe His Leu Cys Leu Ile Ile Ser Cys Ser Cys Pro Thr 1 5 10 15 Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Gly Met Asp Ile 20 25 30 Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu Ser Phe Leu 35 40 45 Pro Ser Ala Phe Phe Pro Ser Val Arg Asp Leu Leu Asp Thr Ala Ser 50 55 60 Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys Ser Pro His 65 70 75 80 His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp Leu Met Thr 85 90 95 Leu Ala Thr Trp Val Gly Val Asn Leu Glu Asp Pro Ala Ser Arg Asp 100 105 110 Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys Phe Arg Gln 115 120 125 Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg Glu Thr Val 130 135 140 Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Pro Ala 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu Thr Thr 165 170 175 Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr Pro Ser Pro 180 185 190 Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser Gln Ser Arg 195 200 205 Glu Ser Gln Cys 210 <210> SEQ ID NO 71 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 71 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ala Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Asn Asn Leu Glu Asp Pro Ala 65 70 75 80 Ser Arg Asp Leu Val Val Asn Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Ile Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Leu Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Thr Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Glu Ser Gln Cys 180 <210> SEQ ID NO 72 <211> LENGTH: 183 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 72 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Gly Asn Leu Glu Asp Pro Ile 65 70 75 80 Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Ile Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Cys Val Val Arg Arg Arg Gly Arg Ser Pro Arg Arg Arg Thr 145 150 155 160 Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg Arg Ser 165 170 175 Gln Ser Arg Gly Ser Gln Cys 180 <210> SEQ ID NO 73 <211> LENGTH: 188 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 73 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ser Ser Tyr Gln Leu Leu 1 5 10 15 Asn Phe Leu Pro Leu Asp Phe Phe Pro Asp Leu Asn Ala Leu Val Asp 20 25 30 Thr Ala Thr Ala Leu Tyr Glu Glu Glu Leu Thr Gly Arg Glu His Cys 35 40 45 Ser Pro His His Thr Ala Ile Arg Gln Ala Leu Val Cys Trp Asp Glu 50 55 60 Leu Thr Lys Leu Ile Ala Trp Met Ser Ser Asn Ile Thr Ser Glu Gln 65 70 75 80 Val Arg Thr Ile Ile Val Asn His Val Asn Asp Thr Trp Gly Leu Lys 85 90 95 Val Arg Gln Ser Leu Trp Phe His Leu Ser Cys Leu Thr Phe Gly Gln 100 105 110 His Thr Val Gln Glu Phe Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Ala Pro Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu His Thr Val Ile Arg Arg Arg Gly Gly Ala Arg Ala Ser Arg Ser 145 150 155 160 Pro Arg Arg Arg Thr Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro 165 170 175 Arg Arg Arg Arg Ser Gln Ser Pro Ser Thr Asn Cys 180 185 <210> SEQ ID NO 74 <211> LENGTH: 217 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 74 Met Tyr Leu Phe His Leu Cys Leu Val Phe Ala Cys Val Pro Cys Pro 1 5 10 15 Thr Val Gln Ala Ser Lys Leu Cys Leu Gly Trp Leu Trp Asp Met Asp 20 25 30 Ile Asp Pro Tyr Lys Glu Phe Gly Ser Ser Tyr Gln Leu Leu Asn Phe 35 40 45 Leu Pro Leu Asp Phe Phe Pro Asp Leu Asn Ala Leu Val Asp Thr Ala 50 55 60 Ala Ala Leu Tyr Glu Glu Glu Leu Thr Gly Arg Glu His Cys Ser Pro 65 70 75 80 His His Thr Ala Ile Arg Gln Ala Leu Val Cys Trp Glu Glu Leu Thr 85 90 95 Arg Leu Ile Thr Trp Met Ser Glu Asn Thr Thr Glu Glu Val Arg Arg 100 105 110 Ile Ile Val Asp His Val Asn Asn Thr Trp Gly Leu Lys Val Arg Gln 115 120 125 Thr Leu Trp Phe His Leu Ser Cys Leu Thr Phe Gly Gln His Thr Val 130 135 140 Gln Glu Phe Leu Val Ser Phe Gly Val Trp Ile Arg Thr Pro Ala Pro 145 150 155 160 Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro Glu His Thr 165 170 175 Val Ile Arg Arg Arg Gly Gly Ser Arg Ala Ala Arg Ser Pro Arg Arg 180 185 190 Arg Thr Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg 195 200 205 Arg Ser Gln Ser Pro Ala Ser Asn Cys 210 215 <210> SEQ ID NO 75 <211> LENGTH: 262 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 75 Met Asp Val Asn Ala Ser Arg Ala Leu Ala Asn Val Tyr Asp Leu Pro 1 5 10 15 Asp Asp Phe Phe Pro Lys Ile Glu Asp Leu Val Arg Asp Ala Lys Asp 20 25 30 Ala Leu Glu Pro Tyr Trp Lys Ser Asp Ser Ile Lys Lys His Val Leu 35 40 45 Ile Ala Thr His Phe Val Asp Leu Ile Glu Asp Phe Trp Gln Thr Thr 50 55 60 Gln Gly Met His Glu Ile Ala Glu Ala Ile Arg Ala Val Ile Pro Pro 65 70 75 80 Thr Thr Ala Pro Val Pro Ser Gly Tyr Leu Ile Gln His Asp Glu Ala 85 90 95 Glu Glu Ile Pro Leu Gly Asp Leu Phe Lys Glu Gln Glu Glu Arg Ile 100 105 110 Val Ser Phe Gln Pro Asp Tyr Pro Ile Thr Ala Arg Ile His Ala His 115 120 125 Leu Lys Ala Tyr Ala Lys Ile Asn Glu Glu Ser Leu Asp Arg Ala Arg 130 135 140 Arg Leu Leu Trp Trp His Tyr Asn Cys Leu Leu Trp Gly Glu Ala Thr 145 150 155 160 Val Thr Asn Tyr Ile Ser Arg Leu Arg Thr Trp Leu Ser Thr Pro Glu 165 170 175 Lys Tyr Arg Gly Arg Asp Ala Pro Thr Ile Glu Ala Ile Thr Arg Pro 180 185 190 Ile Gln Val Ala Gln Gly Gly Arg Lys Thr Ser Thr Ala Thr Arg Lys 195 200 205 Pro Arg Gly Leu Glu Pro Arg Arg Arg Lys Val Lys Thr Thr Val Val 210 215 220 Tyr Gly Arg Arg Arg Ser Lys Ser Arg Glu Arg Arg Ala Ser Ser Pro 225 230 235 240 Gln Arg Ala Gly Ser Pro Leu Pro Arg Ser Ser Ser Ser His His Arg 245 250 255 Ser Pro Ser Pro Arg Lys 260 <210> SEQ ID NO 76 <211> LENGTH: 305 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 76 Met Trp Asp Leu Arg Leu His Pro Ser Pro Phe Gly Ala Ala Cys Gln 1 5 10 15 Gly Ile Phe Thr Ser Ser Leu Leu Leu Phe Leu Val Thr Val Pro Leu 20 25 30 Val Cys Thr Ile Val Tyr Asp Ser Cys Leu Cys Met Asp Ile Asn Ala 35 40 45 Ser Arg Ala Leu Ala Asn Val Tyr Asp Leu Pro Asp Asp Phe Phe Pro 50 55 60 Lys Ile Asp Asp Leu Val Arg Asp Ala Lys Asp Ala Leu Glu Pro Tyr 65 70 75 80 Trp Arg Asn Asp Ser Ile Lys Lys His Val Leu Ile Ala Thr His Phe 85 90 95 Val Asp Leu Ile Glu Asp Phe Trp Gln Thr Thr Gln Gly Met His Glu 100 105 110 Ile Ala Glu Ala Leu Arg Ala Ile Ile Pro Ala Thr Thr Ala Pro Val 115 120 125 Pro Gln Gly Phe Leu Val Gln His Glu Glu Ala Glu Glu Ile Pro Leu 130 135 140 Gly Glu Leu Phe Arg Tyr Gln Glu Glu Arg Leu Thr Asn Phe Gln Pro 145 150 155 160 Asp Tyr Pro Val Thr Ala Arg Ile His Ala His Leu Lys Ala Tyr Ala 165 170 175 Lys Ile Asn Glu Glu Ser Leu Asp Arg Ala Arg Arg Leu Leu Trp Trp 180 185 190 His Tyr Asn Cys Leu Leu Trp Gly Glu Pro Asn Val Thr Asn Tyr Ile 195 200 205 Ser Arg Leu Arg Thr Trp Leu Ser Thr Pro Glu Lys Tyr Arg Gly Lys 210 215 220 Asp Ala Pro Thr Ile Glu Ala Ile Thr Arg Pro Ile Gln Val Ala Gln 225 230 235 240 Gly Gly Arg Asn Lys Thr Gln Gly Val Arg Lys Ser Arg Gly Leu Glu 245 250 255 Pro Arg Arg Arg Arg Val Lys Thr Thr Ile Val Tyr Gly Arg Arg Arg 260 265 270 Ser Lys Ser Arg Glu Arg Arg Ala Pro Thr Pro Gln Arg Ala Gly Ser 275 280 285 Pro Leu Pro Arg Thr Ser Arg Asp His His Arg Ser Pro Ser Pro Arg 290 295 300 Glu 305 <210> SEQ ID NO 77 <211> LENGTH: 185 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 77 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ser Ala Leu Tyr Arg Glu Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Glu 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Asn Asn Leu Glu Asp Pro Ala 65 70 75 80 Ser Arg Asp Leu Val Val Asn Tyr Val Asn Thr Asn Met Gly Leu Lys 85 90 95 Ile Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr Phe Gly Arg 100 105 110 Glu Thr Val Leu Glu Tyr Leu Val Ser Phe Gly Val Trp Ile Arg Thr 115 120 125 Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser Thr Leu Pro 130 135 140 Glu Thr Thr Val Val Arg Arg Arg Asp Arg Gly Arg Ser Pro Arg Arg 145 150 155 160 Arg Thr Pro Ser Pro Arg Arg Arg Arg Ser Gln Ser Pro Arg Arg Arg 165 170 175 Arg Ser Gln Ser Arg Glu Ser Gln Cys 180 185 <210> SEQ ID NO 78 <211> LENGTH: 152 <212> TYPE: PRT <213> ORGANISM: Hepatitis B virus <400> SEQUENCE: 78 Met Asp Ile Asp Pro Tyr Lys Glu Phe Gly Ala Thr Val Glu Leu Leu 1 5 10 15 Ser Phe Leu Pro Ser Asp Phe Phe Pro Ser Val Arg Asp Leu Leu Asp 20 25 30 Thr Ala Ala Ala Leu Tyr Arg Asp Ala Leu Glu Ser Pro Glu His Cys 35 40 45 Ser Pro His His Thr Ala Leu Arg Gln Ala Ile Leu Cys Trp Gly Asp 50 55 60 Leu Met Thr Leu Ala Thr Trp Val Gly Thr Asn Leu Glu Asp Gly Gly 65 70 75 80 Lys Gly Gly Ser Arg Asp Leu Val Val Ser Tyr Val Asn Thr Asn Val 85 90 95 Gly Leu Lys Phe Arg Gln Leu Leu Trp Phe His Ile Ser Cys Leu Thr 100 105 110 Phe Gly Arg Glu Thr Val Leu Glu Tyr Leu Val Ser Phe Gly Val Trp 115 120 125 Ile Arg Thr Pro Pro Ala Tyr Arg Pro Pro Asn Ala Pro Ile Leu Ser 130 135 140 Thr Leu Pro Glu Thr Thr Val Val 145 150 <210> SEQ ID NO 79 <211> LENGTH: 3635 <212> TYPE: DNA <213> ORGANISM: Artificial Sequence <220> FEATURE: <223> OTHER INFORMATION: plasmid pAP283-58 <400> SEQUENCE: 79 cgagctcgcc cctggcttat cgaaattaat acgactcact atagggagac cggaattcga 60 gctcgcccgg ggatcctcta gaattttctg cgcacccatc ccgggtggcg cccaaagtga 120 ggaaaatcac atggcaaata agccaatgca accgatcaca tctacagcaa ataaaattgt 180 gtggtcggat ccaactcgtt tatcaactac attttcagca agtctgttac gccaacgtgt 240 taaagttggt atagccgaac tgaataatgt ttcaggtcaa tatgtatctg tttataagcg 300 tcctgcacct aaaccggaag gttgtgcaga tgcctgtgtc attatgccga atgaaaacca 360 atccattcgc acagtgattt cagggtcagc cgaaaacttg gctaccttaa aagcagaatg 420 ggaaactcac aaacgtaacg ttgacacact cttcgcgagc ggcaacgccg gtttgggttt 480 ccttgaccct actgcggcta tcgtatcgtc tgatactact gcttaagctt gtattctata 540 gtgtcaccta aatcgtatgt gtatgataca taaggttatg tattaattgt agccgcgttc 600 taacgacaat atgtacaagc ctaattgtgt agcatctggc ttactgaagc agaccctatc 660 atctctctcg taaactgccg tcagagtcgg tttggttgga cgaaccttct gagtttctgg 720 taacgccgtt ccgcaccccg gaaatggtca ccgaaccaat cagcagggtc atcgctagcc 780 agatcctcta cgccggacgc atcgtggccg gcatcaccgg cgcacacagt gcggttgctg 840 gcgcctatat cgccgacatc accgatgggg aagatcgggc tcgccacttc gggctcatga 900 gcgcttgttt cggcgtgggt atggtggcag gccccgtggc cgggggactg ttgggcgcca 960 tctccttgca tgcaccattc cttgcggcgg cggtgcttca acggcctcaa cctactactg 1020 ggctgcttcc taatgcagga gtcgcataag ggagagcgtc gatatggtgc actctcagta 1080 caatctgctc tgatgccgca tagttaagcc aactccgcta tcgctacgtg actgggtcat 1140 ggctgcgccc cgacacccgc caacacccgc tgacgcgccc tgacgggctt gtctgctccc 1200 ggcatccgct tacagacaag ctgtgaccgt ctccgggagc tgcatgtgtc agaggttttc 1260 accgtcatca ccgaaacgcg cgaggcagct tgaagacgaa agggcctcgt gatacgccta 1320 tttttatagg ttaatgtcat gataataatg gtttcttaga cgtcaggtgg cacttttcgg 1380 ggaaatgtgc gcggaacccc tatttgttta tttttctaaa tacattcaaa tatgtatccg 1440 ctcatgagac aataaccctg ataaatgctt caataatatt gaaaaaggaa gagtatgagt 1500 attcaacatt tccgtgtcgc ccttattccc ttttttgcgg cattttgcct tcctgttttt 1560 gctcacccag aaacgctggt gaaagtaaaa gatgctgaag atcagttggg tgcacgagtg 1620 ggttacatcg aactggatct caacagcggt aagatccttg agagttttcg ccccgaagaa 1680 cgttttccaa tgatgagcac ttttaaagtt ctgctatgtg gcgcggtatt atcccgtatt 1740 gacgccgggc aagagcaact cggtcgccgc atacactatt ctcagaatga cttggttgag 1800 tactcaccag tcacagaaaa gcatcttacg gatggcatga cagtaagaga attatgcagt 1860 gctgccataa ccatgagtga taacactgcg gccaacttac ttctgacaac gatcggagga 1920 ccgaaggagc taaccgcttt tttgcacaac atgggggatc atgtaactcg ccttgatcgt 1980 tgggaaccgg agctgaatga agccatacca aacgacgagc gtgacaccac gatgcctgta 2040 gcaatggcaa caacgttgcg caaactatta actggcgaac tacttactct agcttcccgg 2100 caacaattaa tagactggat ggaggcggat aaagttgcag gaccacttct gcgctcggcc 2160 cttccggctg gctggtttat tgctgataaa tctggagccg gtgagcgtgg gtctcgcggt 2220 atcattgcag cactggggcc agatggtaag ccctcccgta tcgtagttat ctacacgacg 2280 gggagtcagg caactatgga tgaacgaaat agacagatcg ctgagatagg tgcctcactg 2340 attaagcatt ggtaactgtc agaccaagtt tactcatata tactttagat tgatttaaaa 2400 cttcattttt aatttaaaag gatctaggtg aagatccttt ttgataatct catgaccaaa 2460 atcccttaac gtgagttttc gttccactga gcgtcagacc ccgtagaaaa gatcaaagga 2520 tcttcttgag atcctttttt tctgcgcgta atctgctgct tgcaaacaaa aaaaccaccg 2580 ctaccagcgg tggtttgttt gccggatcaa gagctaccaa ctctttttcc gaaggtaact 2640 ggcttcagca gagcgcagat accaaatact gtccttctag tgtagccgta gttaggccac 2700 cacttcaaga actctgtagc accgcctaca tacctcgctc tgctaatcct gttaccagtg 2760 gctgctgcca gtggcgataa gtcgtgtctt accgggttgg actcaagacg atagttaccg 2820 gataaggcgc agcggtcggg ctgaacgggg ggttcgtgca cacagcccag cttggagcga 2880 acgacctaca ccgaactgag atacctacag cgcgagcatt gagaaagcgc cacgcttccc 2940 gaagggagaa aggcggacag gtatccggta agcggcaggg tcggaacagg agagcgcacg 3000agggagcttc cagggggaaa cgcctggtat ctttatagtc ctgtcgggtt tcgccacctc 3060 tgacttgagc gtcgattttt gtgatgctcg tcaggggggc ggagcctatg gaaaaacgcc 3120 agcaacgcgg cctttttacg gttcctggcc ttttgctggc cttttgctca catgttcttt 3180 cctgcgttat cccctgattc tgtggataac cgtattaccg cctttgagtg agctgatacc 3240 gctcgccgca gccgaacgac gagcgcagcg agtcagtgag cgaggaagcg gaagagcgcc 3300 caatacgcaa accgcctctc cccgcgcgtt ggccgattca ttaatgcagc tgtggtgtca 3360 tggtcggtga tcgccagggt gccgacgcgc atctcgactg catggtgcac caatgcttct 3420 ggcgtcaggc agccatcgga agctgtggta tggccgtgca ggtcgtaaat cactgcataa 3480 ttcgtgtcgc tcaaggcgca ctcccgttct ggataatgtt ttttgcgccg acatcataac 3540 ggttctggca aatattctga aatgagctgt tgacaattaa tcatcgaact agttaactag 3600 tacgcaagtt cacgtaaaaa gggtatcgcg gaatt 3635 <210> SEQ ID NO 80 <211> LENGTH: 131 <212> TYPE: PRT <213> ORGANISM: Artificial Sequence <220> FEATURE: <223> OTHER INFORMATION: AP205 coat protein <400> SEQUENCE: 80 Met Ala Asn Lys Pro Met Gln Pro Ile Thr Ser Thr Ala Asn Lys Ile 1 5 10 15 Val Trp Ser Asp Pro Thr Arg Leu Ser Thr Thr Phe Ser Ala Ser Leu 20 25 30 Leu Arg Gln Arg Val Lys Val Gly Ile Ala Glu Leu Asn Asn Val Ser 35 40 45 Gly Gln Tyr Val Ser Val Tyr Lys Arg Pro Ala Pro Lys Pro Glu Gly 50 55 60 Cys Ala Asp Ala Cys Val Ile Met Pro Asn Glu Asn Gln Ser Ile Arg 65 70 75 80 Thr Val Ile Ser Gly Ser Ala Glu Asn Leu Ala Thr Leu Lys Ala Glu 85 90 95 Trp Glu Thr His Lys Arg Asn Val Asp Thr Leu Phe Ala Ser Gly Asn 100 105 110 Ala Gly Leu Gly Phe Leu Asp Pro Thr Ala Ala Ile Val Ser Ser Asp 115 120 125 Thr Thr Ala 130 <210> SEQ ID NO 81 <211> LENGTH: 131 <212> TYPE: PRT <213> ORGANISM: Artificial Sequence <220> FEATURE: <223> OTHER INFORMATION: AP205 coat protein <400> SEQUENCE: 81 Met Ala Asn Lys Thr Met Gln Pro Ile Thr Ser Thr Ala Asn Lys Ile 1 5 10 15 Val Trp Ser Asp Pro Thr Arg Leu Ser Thr Thr Phe Ser Ala Ser Leu 20 25 30 Leu Arg Gln Arg Val Lys Val Gly Ile Ala Glu Leu Asn Asn Val Ser 35 40 45 Gly Gln Tyr Val Ser Val Tyr Lys Arg Pro Ala Pro Lys Pro Glu Gly 50 55 60 Cys Ala Asp Ala Cys Val Ile Met Pro Asn Glu Asn Gln Ser Ile Arg 65 70 75 80 Thr Val Ile Ser Gly Ser Ala Glu Asn Leu Ala Thr Leu Lys Ala Glu 85 90 95 Trp Glu Thr His Lys Arg Asn Val Asp Thr Leu Phe Ala Ser Gly Asn 100 105 110 Ala Gly Leu Gly Phe Leu Asp Pro Thr Ala Ala Ile Val Ser Ser Asp 115 120 125 Thr Thr Ala 130 <210> SEQ ID NO 82 <211> LENGTH: 3607 <212> TYPE: DNA <213> ORGANISM: Artificial Sequence <220> FEATURE: <223> OTHER INFORMATION: plasmid pAP281-32 <400> SEQUENCE: 82 cgagctcgcc cctggcttat cgaaattaat acgactcact atagggagac cggaattcga 60 gctcgcccgg ggatcctcta gattaaccca acgcgtagga gtcaggccat ggcaaataag 120 acaatgcaac cgatcacatc tacagcaaat aaaattgtgt ggtcggatcc aactcgttta 180 tcaactacat tttcagcaag tctgttacgc caacgtgtta aagttggtat agccgaactg 240 aataatgttt caggtcaata tgtatctgtt tataagcgtc ctgcacctaa accgaaggtc 300 agatgcctgt gtcattatgc cgaatgaaaa ccaatccatt cgcacagtga tttcagggtc 360 agccgaaaac ttggctacct taaaagcaga atgggaaact cacaaacgta acgttgacac 420 actcttcgcg agcggcaacg ccggtttggg tttccttgac cctactgcgg ctatcgtatc 480 gtctgatact actgcttaag cttgtattct atagtgtcac ctaaatcgta tgtgtatgat 540 acataaggtt atgtattaat ggtagccgcg ttctaacgac aatatgtaca agcctaattg 600 tgtagcatct ggcttactga agcagaccct atcatctctc tcgtaaactg ccgtcagagt 660 cggttgggtt ggacagacct ctgagtttct ggtaacgccg ttccgcaccc cggaaatggt 720 caccgaacca ttcagcaggg tcatcgctag ccagatcctc tacgccggac gcatcgtggc 780 ccgcatcacc ggcgccacag gtgcggtgct ggcgcctata tcgccgacat caccgatggg 840 gaagatcggg ctcgccactt cgggctcatg atcgctggtt tccgcctggg tatggtggca 900 ggccccgtgg cccgggggac tgttgggcgc catctccttg catgcaccat tccttgcggc 960 ggcggtgctc aacggcctca acctactact gggctgcttc ctaatgcagg agtcgcataa 1020 gggagagcgt cgatatggtg cactctcagt acaatctgct ctgatgccgc atagttaagc 1080 caactccgct atcgctacgt gactgggtca tggctgcgcc ccgacacccg ccaacacccg 1140 ctgacgcgcc ctgacgggct tgtctgcttc cggcatccgc ttacagacaa gctgtgaccg 1200 tctccgggag ctgcatgtgt cagaggtttt caccgtcatc accgaaacgc gcgaggcagc 1260 ttgaagacga aagggcctcg tgatacgcct atttttatag gttaatgtca tgataataat 1320 ggtttcttag acgtcaggtg gcacttttcg gggaaatgtg cgcggacccc ctattggttt 1380 atttttctaa atacattcaa atatgtatcc gctcatgaga caataaccct gataaatgct 1440 tcaataatat tgaaaaagga agagtatgag tattcaacat ttccgtgtcg cccttattcc 1500 cttttttgcg gcattttgcc ttcctgtttt tgctcaccca gaaacgctgg tgaaagtaaa 1560 agatgctgaa gatcagttgg gtgcacgagt gggttacatc gaactggatc tcaacagcgg 1620 taagatcctt gagagttttc gccccgaaga acgtttttca atgatgagca cttttaaagt 1680 tctgctatgt gtcgcggtat tatcccgtat tgacgccggg caagagcaac tcggtcgccg 1740 catacactat tctcagaatg acttggtggt acctaccagt cacagaaaag catcttacgg 1800 atggcatgac agtaagagaa ttatgcagtg ctgccataac catgagtgat aacactgcgg 1860 ccaacttact tctgacaacg atcggaggac cgaaggagct aaccgctttt ttgcacaaca 1920 tgggggatca tgtaactcgc cttgatcgtt gggaaccgga gctgaatgaa gccataccaa 1980 acgacgagcg tgacaccacg atgcctgtac gaacggcaac aacgttgcgc aaactattaa 2040 ctggcgaact acttactcta gcttcccggc aacaattaat agactggatg gaggcggata 2100 aagttgcagg accacttctg cgctcggccc ttccggctgg ctggtttatt gctgataaat 2160 ctggagccgg tgagcgtggg tctcgcggta tcattgcagc actggggcca gatggtaagc 2220 cctcccgtat cgtagttatc tacacgacgg ggagtcaggc aactatggat gaacgaaata 2280 gacagatcgc tgagataggt gcctcactga ttaagcattg gtaactgtca gaccaagttt 2340 actcatatat actttagatt gatttaaaac ttcattttta atttaaaagg atctaggtga 2400 agatcctttt tgataatctc atgaccaaaa tcccttaacg tgagttttcg ttccactgag 2460 cggtcagacc ccgtagaaag atcaaaggat cttcttgaga tccttttttt ctgcgcgtaa 2520 tctgctgctt gcaaacaaaa aaaccaccgc taccagcggt ggtttgtttg ccggatcaag 2580 agctaccaac tctttttccg aaggtaactg gcttcagcag agcgcagata ccaaatactg 2640 tccttctagt gtagccgtag ttaggccacc acttcaagaa ctctgtagca ccgcctacat 2700 acctcgctct gctaatcctg ttaccagtgg ctgctgccag tggcgataag tcgtgtctta 2760 ccgggttgga ctcaagacga taggtaccgg ataaggcgca gcggtcgggc tgaacggggg 2820 gttcgtgcac acagcccagc ttggagcgaa cgacctacac cgaactgaga tacctacagc 2880 gcgagcattg agaaagcgcc acgcttcccg aagggagaaa ggcggacagg tatccggtaa 2940 gcggcagggt cggaacaaga gagcgcacga gggagcttcc agggggaaac gcctggtatc 3000 tttatagtcc tgtcgggttt cgccacctct gacttgagcg tcgatttttg tgatgctcgt 3060 caggggggcg gagcctatgg aaaaacgcca gcaacgcggc ctttttacgg ttcctggcct 3120 ttggctggcc ttttgctcac atgttctttc ctgcgttatc ccctgattct gtggataacc 3180 gtattaccgc ctttgagtga gctgataccg ctcgccgcag ccgaacgacc gacggcgcag 3240 cgagtcagtg agcgaggaag cggaagagcg cccaatacgc aaaccgcctc tccccgcgcg 3300 ttggccgatt cattaatgca gctgtggtgt catggtcggt gatcgccagg gtgccgacgc 3360 gcatctcgac tgcatggtgc accaatgctt ctggcgtcag gcagccatcg gaagctgtgg 3420 tatggccgtg caggtcgtaa atcactgcat aattcgtgtc gctcaaggcg cactcccgtt 3480 ctggataatg ttttttgcgg cgacatcata acggttctgg caaatattct gaaatgagct 3540 ggtgacaatt aatcatcgaa ctagttaact agtacgcaag ttcacgtaaa aagggtatcg 3600 cggaatt 3607
Claims (207)
1. A composition for enhancing an immune response in an animal comprising:
(a) a virus-like particle; and
(b) an immunostimulatory substance; wherein said immunostimulatory substance is bound to said virus-like particle.
2. The composition of claim 1 further comprising at least one antigen, wherein said antigen is bound to said virus-like particle.
3. The composition of claim 1 , wherein said immunostimulatory substance is a toll-like receptor activating substance.
4. The composition of claim 1 , wherein said immunostimulatory substance is a cytokine secretion inducing substance.
5. The composition of claim 3 , wherein said toll-like receptor activating substance is selected from the group consisting of, or alternatively consists essentially of:
(a) immunostimulatory nucleic acids;
(b) peptidoglycans;
(c) lipopolysaccharides;
(d) lipoteichonic acids;
(e) imidazoquinoline compounds;
(f) flagellines;
(g) lipoproteins;
(h) immunostimulatory organic molecules;
(i) unmethylated CpG-containing oligonucleotides; and
(j) any mixtures of at least one substance of (a), (b), (c), (d), (e), (f), (g), (h) and/or (i).
6. The composition of claim 5 , wherein said immunostimulatory nucleic acid is selected from the group consisting of, or alternatively consists essentially of:
(a) ribonucleic acids;
(b) deoxyribonucleic acids;
(c) chimeric nucleic acids; and
(d) any mixtures of at least one nucleic acid of (a), (b) and/or (c).
7. The composition of claim 6 , wherein said ribonucleic acid is poly-(I:C) or a derivative thereof.
8. The composition of claim 6 , wherein said deoxyribonucleic acid is selected from the group consisting of, or alternatively consists essentially of:
(a) unmethylated CpG-containing oligonucleotides; and
(b) oligonucleotides free of unmethylated CpG motifs.
9. The composition of claim 1 , wherein said immunostimulatory substance is an unmethylated CpG-containing oligonucleotide.
10. The composition of claim 1 , wherein said virus-like particle lacks a lipoprotein-containing envelope.
11. The composition of claim 1 , wherein said virus-like particle is a recombinant virus-like particle.
12. The composition of claim 11 , wherein said virus-like particle is selected from the group consisting of:
(a) recombinant proteins of Hepatitis B virus;
(b) recombinant proteins of measles virus;
(c) recombinant proteins of Sinbis virus;
(d) recombinant proteins of Rotavirus;
(e) recombinant proteins of Foot-and-Mouth-Disease virus;
(f) recombinant proteins of Retrovirus;
(g) recombinant proteins of Norwalk virus;
(h) recombinant proteins of human Papilloma virus;
(i) recombinant proteins of BK virus;
(j) recombinant proteins of bacteriophages;
(k) recombinant proteins of RNA-phages;
(1) recombinant proteins of Qβ-phage;
(m) recombinant proteins of GA-phage (n) recombinant proteins of fr-phage;
(o) recombinant proteins of AP 205-phage;
(p) recombinant proteins of Ty; and
(q) fragments of any of the recombinant proteins from (a) to (p).
13. The composition of claim 12 , wherein said virus-like particle is the Hepatitis B virus core protein.
14. The composition of claim 12 , wherein said virus-like particle is the BK virus VP 1 protein.
15. The composition of claim 1 , wherein said virus-like particle comprises recombinant proteins, or fragments thereof, of a RNA-phage.
16. The composition of claim 15 , wherein said RNA-phage is selected from the group consisting of:
(a) bacteriophage Qβ;
(b) bacteriophage R17;
(c) bacteriophage fr;
(d) bacteriophage GA;
(e) bacteriophage SP;
(f) bacteriophage MS2;
(g) bacteriophage M11;
(h) bacteriophage MX1;
(i) bacteriophage NL95;
(k) bacteriophage f2;
(1) bacteriophage PP7; and
(m) bacteriophage AP205.
17. The composition of claim 1 , wherein said virus-like particle comprises recombinant proteins, or fragments thereof, of RNA-phage Qβ.
18. The composition of claim 1 , wherein said virus-like particle comprises recombinant proteins, or fragments thereof, of RNA-phage AP 205.
19. The composition of claim 9 , wherein said unmethylated CpG-containing oligonucleotide comprises the sequence:
X1X2CGX3X43′
wherein X1, X2, X3, and X4 are any nucleotide.
20. The composition of claim 19 , wherein at least one of said nucleotide X1, X2, X3, and X4 has a phosphate backbone modification.
21. The composition of claim 9 , wherein said unmethylated CpG-containing oligonucleotide comprises, or alternatively consists essentially of, or alternatively consists of the sequence selected from the group consisting of:
(a) TCCATGACGTTCCTGAATAAT;
(b) TCCATGACGTTCCTGACGTT;
(c) GGGGTCAACGTTGAGGGGG;
(d) GGGGGGGGGGGACGATCGTCGGGGGGGGGG; and
(e) “dsCyCpG-253” as described in Table 1.
22. The composition of claim 21 , wherein said unmethylated CpG-containing oligonucleotide contains one or more phosphorothioate modifications of the phosphate backbone or wherein each phosphate moiety of said phosphate backbone of said oligonucleotide is a phosphorothioate modification.
23. The composition of claim 9 , wherein said unrmethylated CpG-containing oligonucleotide is palindromic.
24. The composition of claim 23 , wherein said palindromic unmethylated CpG-containing oligonucleotide comprises, or alternatively consists essentially of, or alternatively consists of the sequence GGGGTCAACGTTGAGGGGG.
25. The composition of claim 24 , wherein said palindromic unmethylated CpG-containing oligonucleotide contains one or more phosphorothioate modifications of the phosphate backbone or wherein each phosphate moiety of said phosphate backbone of said oligonucleotide is a phosphorothioate modification.
26. The composition of claim 1 , wherein said immunostimulatory substance is non-covalently bound to said virus-like particle.
27. The composition of claim 9 , wherein said unmethylated CpG-containing oligonucleotide is non-covalently bound to said virus-like particle.
28. The composition of claim 5 , wherein said immunostimulatory nucleic acid is bound to a virus-like particle site selected from the group consisting of an oligonucleotide binding site, a DNA binding site and a RNA binding site.
29. The composition of claim 9 , wherein said unmethylated CpG-containing oligonucleotide is bound to a virus-like particle site selected from the group consisting of an oligonucleotide binding site, a DNA binding site and a RNA binding site.
30. The composition of claim 29 , wherein said oligonucleotide binding site is a non-naturally occurring oligonucleotide binding site.
31. The composition of claim 29 , wherein said virus-like particle site comprises an arginine-rich repeat.
32. The composition of claim 5 , wherein said immunostimulatory nucleic acid contains one or more phosphorothioate modifications of the phosphate backbone or wherein each phosphate moiety of said phosphate backbone of said oligonucleotide is a phosphorothioate modification.
33. The composition of claim 9 , wherein said unmethylated CpG-containing oligonucleotide contains one or more phosphorothioate modifications of the phosphate backbone or wherein each phosphate moiety of said phosphate backbone of said oligonucleotide is a phosphorothioate modification.
34. The composition of claim 5 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises about 6 to about 100,000 nucleotides.
35. The composition of claim 34 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises about 6 to about 2000 nucleotides.
36. The composition of claim 35 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises about 20 to about 2000 nucleotides.
37. The composition of claim 36 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises about 20 to about 300 nucleotides.
38. The composition of claim 37 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises 20 to 100 nucleotides.
39. The composition of claim 5 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises more than 100 to about 2000 nucleotides.
40. The composition of claim 39 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises more than 100 to about 1000 nucleotides.
41. The composition of claim 40 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises more than 100 to about 500 nucleotides.
42. The composition of claim 5 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide is a recombinant oligonucleotide.
43. The composition of claim 5 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide is a genomic oligonucleotide.
44. The composition of claim 5 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide is a synthetic oligonucleotide.
45. The composition of claim 5 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide is a plasmid-derived oligonucleotide.
46. The composition of claim 5 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide is a single-stranded oligonucleotide.
47. The composition of claim 5 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide is a double-stranded oligonucleotide.
48. The composition of claim 2 , wherein said at least one antigen or antigenic determinant is bound to said virus-like particle by at least one covalent bond.
49. The composition of claim 2 , wherein said at least one antigen or antigenic determinant is bound to said virus-like particle by at least one covalent bond, and wherein said covalent bond is a non-peptide bond.
50. The composition of claim 2 , wherein said at least one antigen or antigenic determinant is fused to said virus-like particle.
51. The composition of claim 2 , wherein said antigen or antigenic determinant further comprises at least one second attachment site being selected from the group consisting of:
(a) an attachment site not naturally occurring with said antigen or antigenic determinant; and
(b) an attachment site naturally occurring with said antigen or antigenic determinant.
52. The composition of claim 2 further comprising an amino acid linker, wherein said amino acid linker comprises, or alternatively consists of, said second attachment site.
53. The composition of claim 2 , wherein said antigen is selected from the group consisting of:
(a) polypeptides;
(b) carbohydrates;
(c) steroid hormones; and
(d) organic molecules.
54. The composition of claim 53 , wherein said antigen is an organic molecule.
55. The composition of claim 54 , wherein said organic molecule is selected from the group consisting of:
(a) codeine;
(b) fentanyl;
(c) heroin;
(d) morphium;
(e) amphetamine;
(f) cocaine;
(g) methylenedioxymethamphetamine;
(h) methamphetamine;
(i) methylphenidate;
(j) nicotine;
(k) LSD;
(l) mescaline;
(m) psilocybin; and
(n) tetrahydrocannabinol.
56. The composition of claim 2 , wherein said antigen is a recombinant antigen.
57. The composition of claim 2 , wherein said antigen is derived from the group consisting of:
(a) viruses;
(b) bacteria;
(c) parasites;
(d) prions;
(e) tumors;
(f) self-molecules;
(g) non-peptidic hapten molecules
(h) allergens; and
(i) hormones.
58. The composition of claim 57 , wherein said antigen is a tumor antigen.
59. The composition of claim 58 , wherein said tumor antigen is selected from the group consisting of:
(a) Her2;
(b) GD2;
(c) EGF-R;
(d) CEA;
(e) CD52;
(f) CD21;
(g) human melanoma protein gp100;
(h) human melanoma protein melan-A/MART-1;
(i) tyrosinase;
(j) NA 17-A nt protein;
(k) MAGE-3 protein;
(l) p53 protein;
(m) HPV16 E7 protein; and
(n) antigenic fragments of any of the tumor antigens from (a) to (m).
60. The composition of claim 2 , wherein said antigen is bound to said virus-like particle by way of a linking sequence.
61. The composition of claim 60 , wherein said virus-like particle is the Hepatitis B virus core protein.
62. The composition of claim 60 , wherein said virus-like particle is the BK virus core protein.
63. The composition of claim 2 , wherein said antigen is a cytotoxic T cell epitope, a Th cell epitope or a combination of at least two of said epitopes, wherein said at least two epitopes are bound directly or by way of a linking sequence.
64. The composition of claim 63 , wherein said cytotoxic T cell epitope is a viral or a tumor cytotoxic T cell epitope.
65. The composition of claim 63 , wherein said antigen is bound to said virus-like particle by way of a linking sequence.
66. The composition of claim 63 , wherein said virus-like particle is the Hepatitis B virus core protein.
67. The composition of claim 66 , wherein said cytotoxic T cell epitope is fused to the C-terminus of said Hepatitis B virus core protein.
68. The composition of claim 67 , wherein said cytotoxic T cell epitope is fused to the C-terminus of said Hepatitis B virus core protein by way of a linking sequence.
69. The composition of claim 63 , wherein said virus-like particle is the BK virus VP 1 protein.
70. The composition of claim 69 , wherein said cytotoxic T cell epitope is fused to the C-terminus of said BK virus VP1 protein.
71. The composition of claim 70 , wherein said cytotoxic T cell epitope is fused to the C-terminus of said BK virus VP1 protein by way of a linking sequence.
72. A method for enhancing an immune response in an animal comprising introducing into said animal a composition comprising:
(a) a virus-like particle; and
(b) an immunostimulatory substance; wherein said immunostimulatory substance is bound to said virus-like particle.
73. The method of claim 72 , wherein said composition further comprises an antigen, wherein said antigen is bound to said virus-like particle.
74. The method of claim 72 , wherein said immunostimulatory substance is a toll-like receptor activating substance.
75. The method of claim 72 , wherein said immunostimulatory substance is a cytokine secretion inducing substance.
76. The method of claim 74 , wherein said toll-like receptor activating substance is selected from the group consisting of, or alternatively consists essentially of:
(a) immunostimulatory nucleic acids;
(b) peptidoglycans;
(c) lipopolysaccharides;
(d) lipoteichonic acids;
(e) imidazoquinoline compounds;
(f) flagellines;
(g) lipoproteins;
(h) immunostimulatory organic molecules;
(i) unmethylated CpG-containing oligonucleotides; and
(j) any mixtures of at least one substance of (a), (b), (c), (d), (e), (f), (g), (h) and/or (i).
77. The method of claim 76 , wherein said immunostimulatory nucleic acid is selected from the group consisting of, or alternatively consists essentially of:
(a) ribonucleic acids;
(b) deoxyribonucleic acids;
(c) chimeric nucleic acids; and
(d) any mixtures of at least one nucleic acid of (a), (b) and/or (c).
78. The method of claim 77 , wherein said ribonucleic acid is poly-(I:C) or a derivative thereof.
79. The method of claim 77 , wherein said deoxyribonucleic acid is selected from the group consisting of, or alternatively consists essentially of:
(a) unmethylated CpG-containing oligonucleotides; and
(b) oligonucleotides free of unmethylated CpG motifs.
80. The method of claim 72 , wherein said immunostimulatory substance is an unmethylated CpG-containing oligonucleotide.
81. The method of claim 72 , wherein said virus-like particle lacks a lipoprotein-containing envelope.
82. The method of claim 72 , wherein said virus-like particle is a recombinant virus-like particle.
83. The method of claim 82 , wherein said virus-like particle is selected from the group consisting of:
(a) recombinant proteins of Hepatitis B virus;
(b) recombinant proteins of measles virus;
(c) recombinant proteins of Sinbis virus;
(d) recombinant proteins of Rotavirus;
(e) recombinant proteins of Foot-and-Mouth-Disease virus;
(f) recombinant proteins of Retrovirus;
(g) recombinant proteins of Norwalk virus;
(h) recombinant proteins of human Papilloma virus;
(i) recombinant proteins of BK virus;
(j) recombinant proteins of bacteriophages;
(k) recombinant proteins of RNA-phages;
(l) recombinant proteins of Qβ-phage;
(m) recombinant proteins of GA-phage;
(n) recombinant proteins of fr-phage;
(o) recombinant proteins of AP 205-phage;
(p) recombinant proteins of Ty; and
(q) fragments of any of the recombinant proteins from (a) to (p).
84. The method of claim 83 , wherein said virus-like particle is the Hepatitis B virus core protein.
85. The method of claim 83 , wherein said virus-like particle is the BK virus VP 1 protein.
86. The method of claim 72 , wherein said virus-like particle comprises recombinant proteins, or fragments thereof, of a RNA-phage.
87. The method of claim 86 , wherein said RNA-phage is selected from the group consisting of:
(a) bacteriophage Qβ;
(b) bacteriophage R17;
(c) bacteriophage fr;
(d) bacteriophage GA;
(e) bacteriophage SP;
(f) bacteriophage MS2;
(g) bacteriophage M11;
(h) bacteriophage MX1;
(i) bacteriophage NL95;
(k) bacteriophage f2;
(l) bacteriophage PP7; and
(m) bacteriophage AP205.
88. The method of claim 72 , wherein said virus-like particle comprises recombinant proteins, or fragments thereof, of RNA-phage Qβ.
89. The method of claim 72 , wherein said virus-like particle comprises recombinant proteins, or fragments thereof, of RNA-phage AP 205.
90. The method of claim 80 , wherein said unmethylated CpG-containing oligonucleotide comprises the sequence:
5′X1X2CGX3X4 3′
wherein X1, X2, X3, and X4 are any nucleotide.
91. The method of claim 90 , wherein at least one of said nucleotide X1, X2, X3, and X4 has a phosphate backbone modification.
92. The method of claim 80 , wherein said unmethylated CpG-containing oligonucleotide comprises, or alternatively consists essentially of, or alternatively consists of the sequence selected from the group consisting of:
(a) TCCATGACGTTCCTGAATAAT;
(b) TCCATGACGTTCCTGACGTT;
(c) GGGGTCAACGTTGAGGGGG;
(d) GGGGGGGGGGGACGATCGTCGGGGGGGGGG; and
(e) “dsCyCpG-253” as described in Table 1.
93. The method of claim 92 , wherein said unmethylated CpG-containing oligonucleotide contains one or more phosphorothioate modifications of the phosphate backbone or wherein each phosphate moiety of said phosphate backbone of said oligonucleotide is a phosphorothioate modification.
94. The method of claim 80 , wherein said unmethylated CpG-containing oligonucleotide is palindromic.
95. The method of claim 94 , wherein said palindromic unmethylated CpG-containing oligonucleotide comprises, or alternatively consists essentially of, or alternatively consists of the sequence GGGGTCAACGTTGAGGGGG.
96. The method of claim 95 , wherein said palindromic unmethylated CpG-containing oligonucleotide contains one or more phosphorothioate modifications of the phosphate backbone or wherein each phosphate moiety of said phosphate backbone of said oligonucleotide is a phosphorothioate modification.
97. The method of claim 72 , wherein said immunostimulatory substance is non-covalently bound to said virus-like particle.
98. The method of claim 72 , wherein said virus-like particle is produced in a bacterial expression system.
99. The method of claim 72 , wherein said virus-like particle is produced in a yeast expression system.
100. The method of claim 80 , wherein said unmethylated CpG-containing oligonucleotide is non-covalently bound to said virus-like particle.
101. The method of claim 72 , wherein said immunostimulatory substance is packaged, preferably enclosed by said virus-like particle.
102. The method of claim 80 , wherein said unmethylated CpG-containing oligonucleotide is packaged, preferably enclosed by said virus-like particle.
103. The method of claim 76 , wherein said immunostimulatory nucleic acid is bound to a virus-like particle site selected from the group consisting of an oligonucleotide binding site, a DNA binding site and a RNA binding site
104. The method of claim 80 , wherein said unmethylated CpG-containing oligonucleotide is bound to a virus-like particle site selected from the group consisting of an oligonucleotide binding site, a DNA binding site and a RNA binding site.
105. The method of claim 104 , wherein said oligonucleotide binding site is a non-naturally occurring oligonucleotide binding site.
106. The method of claim 104 , wherein said virus-like particle site comprises an arginine-rich repeat.
107. The method of claim 76 , wherein said immunostimulatory nucleic acid contains one or more phosphorothioate modifications of the phosphate backbone or wherein each phosphate moiety of said phosphate backbone of said oligonucleotide is a phosphorothioate modification.
108. The method of claim 80 , wherein said unmethylated CpG-containing oligonucleotide contains one or more phosphorothioate modifications of the phosphate backbone or wherein each phosphate moiety of said phosphate backbone of said oligonucleotide is a phosphorothioate modification.
109. The method of claim 76 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises about 6 to about 100,000 nucleotides.
110. The method of claim 109 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises about 6 to about 2000 nucleotides.
111. The method of claim 110 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises about 20 to about 2000 nucleotides.
112. The method of claim 111 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises about 20 to about 300 nucleotides.
113. The method of claim 112 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises 20 to 100 nucleotides.
114. The method of claim 76 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises more than 100 to about 2000 nucleotides.
115. The method of claim 114 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises more than 100 to about 1000 nucleotides.
116. The method of claim 115 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide comprises more than 100 to about 500 nucleotides.
117. The method of claim 76 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide is a recombinant oligonucleotide.
118. The method of claim 76 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide is a genomic oligonucleotide.
119. The method of claim 76 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide is a synthetic oligonucleotide.
120. The method of claim 76 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide is a plasmid-derived oligonucleotide.
121. The method of claim 76 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide is a single-stranded oligonucleotide.
122. The method of claim 76 , wherein said immunostimulatory nucleic acid, and preferably said unmethylated CpG-containing oligonucleotide is a double-stranded oligonucleotide.
123. The method of claim 73 , wherein said at least one antigen or antigenic determinant is bound to said virus-like particle by at least one covalent bond.
124. The method of claim 73 , wherein said at least one antigen or antigenic determinant is bound to said virus-like particle by at least one covalent bond, and wherein said covalent bond is a non-peptide bond.
125. The method of claim 73 , wherein said at least one antigen or antigenic determinant is fused to said virus-like particle.
126. The method of claim 73 , wherein said antigen or antigenic determinant further comprises at least one second attachment site selected from the group consisting of:
(a) an attachment site not naturally occurring with said antigen or antigenic determinant; and
(b) an attachment site naturally occurring with said antigen or antigenic determinant.
127. The method of claim 73 , further comprising an amino acid linker, wherein said amino acid linker comprises, or alternatively consists of, said second attachment site.
128. The method of claim 73 , wherein said antigen is selected from the group consisting of:
(a) polypeptides;
(b) carbohydrates;
(c) steroid hormones; and
(d) organic molecules.
129. The method of claim 128 , wherein said antigen is an organic molecule.
130. The method of claim 129 , wherein said organic molecule is selected from the group consisting of:
(a) codeine;
(b) fentanyl;
(c) heroin;
(d) morphium;
(e) amphetamine;
(f) cocaine;
(g) methylenedioxymethamphetamine;
(h) methamphetamine;
(i) methylphenidate;
(j) nicotine;
(k) LSD;
(l) mescaline;
(m) psilocybin; and
(n) tetrahydrocannabinol.
131. The method of claim 73 , wherein said antigen is a recombinant antigen.
132. The method of claim 73 , wherein said antigen is derived from the group consisting of:
(a) viruses;
(b) bacteria;
(c) parasites;
(d) prions;
(e) tumors;
(f) self-molecules;
(g) non-peptidic hapten molecules
(h) allergens; and
(i) hormones.
133. The method of claim 132 , wherein said antigen is a tumor antigen.
134. The method of claim 133 , wherein said tumor antigen is selected from the group consisting of:
(a) Her2;
(b) GD2;
(c) EGF-R;
(d) CEA;
(e) CD52;
(f) CD21;
(g) human melanoma protein gp100;
(h) human melanoma protein melan-A/MART-1;
(i) tyrosinase;
(j) NA17-A nt protein;
(k) MAGE-3 protein;
(l) p53 protein;
(m) HPV16 E7 protein; and
(m) antigenic fragments of any of the tumor antigens from (a) to (m).
135. The method of claim 73 , wherein said antigen is bound to said virus-like particle by way of a linking sequence.
136. The method of claim 135 , wherein said virus-like particle is the Hepatitis B virus core protein.
137. The method of claim 135 , wherein said virus-like particle is the BK virus VP1 protein.
138. The method of claim 73 , wherein said antigen is a cytotoxic T cell epitope, a Th cell epitope or a combination of at least two of said epitopes, wherein said at least two epitopes are linked directly or by way of a linking sequence.
139. The method of claim 138 , wherein said cytotoxic T cell epitope is a viral or a tumor cytotoxic T cell epitope.
140. The method of claim 138 , wherein said antigen is bound to said virus-like particle by way of a linking sequence.
141. The method of claim 138 , wherein said virus-like particle is the Hepatitis B virus core protein.
142. The method of claim 141 , wherein said cytotoxic T cell epitope is fused to the C-terminus of said Hepatitis B virus core protein.
143. The method of claim 142 , wherein said cytotoxic T cell epitope is fused to the C-terminus of said Hepatitis B virus core protein by way of a linking sequence.
144. The method of claim 138 , wherein said virus-like particle is a BK virus VP1 protein.
145. The method of claim 144 , wherein said cytotoxic T cell epitope is fused to the C-terminus of said BK virus VP1 protein.
146. The method of claim 145 , wherein said cytotoxic T cell epitope is fused to the C-terminus of said BK virus VP1 protein by way of a linking sequence.
147. The method of claim 72 , wherein said immune response is an enhanced B cell response.
148. The method of claim 72 , wherein said immune response is an enhanced T cell response.
149. The method of claim 148 , wherein said T cell response is a CTL response.
150. The method of claim 148 , wherein said T cell response is a Th cell response.
151. The method of claim 150 , wherein said Th cell response is a Th1 cell response.
152. The method of claim 72 , wherein said animal is a mammal.
153. The method of claim 152 , wherein said mammal is a human.
154. The method of claim 72 , wherein said composition is introduced into said animal subcutaneously, intramuscularly, intravenously, intranasally or directly into the lymph node.
155. A method of producing a composition for enhancing an immune response in an animal comprising a virus-like particle and an immunostimulatory substance bound to said virus-like particle which comprises:
(a) incubating said virus-like particle with said immunostimulatory substance;
(b) adding RNase; and
(c) purifying said composition.
156. The method of claim 155 , wherein said immunostimulatory substance is an immunostimulatory nucleic acid selected from the group consisting of, or alternatively consists essentially of:
(a) ribonucleic acids;
(b) deoxyribonucleic acids;
(c) chimeric nucleic acids; and
(d) any mixtures of at least one nucleic acid of (a), (b) and/or (c).
157. The method of claim 156 , wherein said ribonucleic acid is poly-(I:C) or a derivative thereof.
158. The method of claim 156 , wherein said deoxyribonucleic acid is selected from the group consisting of, or alternatively consists essentially of:
(a) unmethylated CpG-containing oligonucleotides; and
(b) oligonucleotides free of unmethylated CpG motifs.
159. The method of claim 155 , wherein said immunostimulatory substance is an unmethylated CpG-containing oligonucleotide.
160. The method of claim 155 , wherein said virus-like particle is produced in a bacterial expression system.
161. The method of claim 155 , wherein said RNase is RNase A.
162. A method of producing a composition for enhancing an immune response in an animal comprising a virus-like particle and an immunostimulatory substance bound to said virus-like particle which comprises:
(a) incubating said virus-like particle with RNase;
(b) adding said immunostimulatory substance; and
(c) purifying said composition.
163. The method of claim 162 , wherein said immunostimulatory substance is an immunostimulatory nucleic acid selected from the group consisting of, or alternatively consists essentially of:
(a) ribonucleic acids;
(b) deoxyribonucleic acids;
(c) chimeric nucleic acids; and
(d) any mixtures of at least one nucleic acid of (a), (b) and/or (c).
164. The method of claim 163 , wherein said ribonucleic acid is poly-(I:C) or a derivative thereof.
165. The method of claim 163 , wherein said deoxyribonucleic acid is selected from the group consisting of, or alternatively consists essentially of:
(a) unmethylated CpG-containing oligonucleotides; and
(b) oligonucleotides free of unmethylated CpG motifs.
166. The method of claim 162 , wherein said immunostimulatory substance is an unmethylated CpG-containing oligonucleotide.
167. The method of claim 162 , wherein said virus-like particle is produced in a bacterial expression system.
168. The method of claim 162 , wherein said RNase is RNase A.
169. A method of producing a composition for enhancing an immune response in an animal comprising a virus-like particle and an immunostimulatory substance bound to said virus-like particle which comprises:
(a) disassembling said virus-like particle;
(b) adding said immunostimulatory substance; and
(c) reassembling said virus-like particle.
170. The method of claim 169 , wherein said immunostimulatory substance is an immunostimulatory nucleic acid selected from the group consisting of, or alternatively consists essentially of:
(a) ribonucleic acids;
(b) deoxyribonucleic acids;
(c) chimeric nucleic acids; and
(d) any mixtures of at least one nucleic acid of (a), (b) and/or (c).
171. The method of claim 170 , wherein said ribonucleic acid is poly-(I:C) or a derivative thereof.
172. The method of claim 170 , wherein said deoxyribonucleic acid is selected from the group consisting of, or alternatively consists essentially of:
(a) unmethylated CpG-containing oligonucleotides; and
(b) oligonucleotides free of unmethylated CpG motifs.
173. The method of claim 169 , wherein said immunostimulatory substance is an unmethylated CpG-containing oligonucleotide.
174. The method of claim 169 further comprising removing nucleic acids of said disassembled virus-like particle.
175. The method of claim 169 further comprising purifying said composition after reassembly (c).
176. A method of producing a composition for enhancing an immune response in an animal comprising a virus-like particle and an immunostimulatory substance bound to said virus-like particle which comprises:
(a) incubating said virus-like particle with solutions comprising metal ions capable of hydrolizing the nucleic acids of said virus-like particle;
(b) adding said immunostimulatory substance; and
(c) purifying said composition.
177. The method of claim 176 , wherein said immunostimulatory substance is an immunostimulatory nucleic acid selected from the group consisting of, or alternatively consists essentially of:
(a) ribonucleic acids;
(b) deoxyribonucleic acids;
(c) chimeric nucleic acids; and
(d) any mixtures of at least one nucleic acid of (a), (b) and/or (c).
178. The method of claim 177 , wherein said ribonucleic acid is poly-(I:C) or a derivative thereof.
179. The method of claim 177 , wherein said deoxyribonucleic acid is selected from the group consisting of, or alternatively consists essentially of:
(a) unmethylated CpG-containing oligonucleotides; and
(b) oligonucleotides free of unmethylated CpG motifs.
180. The method of claim 176 , wherein said immunostimulatory substance is an unmethylated CpG-containing oligonucleotide.
181. The method of claim 176 , wherein said metal ions are selected from the group consisting of:
(a) zinc (Zn) ions;
(b) copper (Cu) ions;
(c) iron (Fe) ions; and
(d) any mixtures of at least one ion of (a), (b) and/or (c).
182. A vaccine comprising an immunologically effective amount of the composition of claim 1 together with a pharmaceutically acceptable diluent, carrier or excipient.
183. The vaccine of claim 182 further comprising an adjuvant.
184. A method of immunizing or treating an animal comprising administering to said animal an immunologically effective amount of the vaccine of claim 182 .
185. The method of claim 184 , wherein said animal is a mammal.
186. The method of claim 185 , wherein said mammal is a human.
187. A vaccine comprising an immunologically effective amount of the composition of claim 2 together with a pharmaceutically acceptable diluent, carrier or excipient.
188. The vaccine of claim 187 further comprising an adjuvant.
189. A method of immunizing or treating an animal comprising administering to said animal an immunologically effective amount of the vaccine of claim 187 .
190. The method of claim 189 , wherein said animal is a mammal.
191. The method of claim 190 , wherein said mammal is a human.
192. A method of immunizing or treating an animal comprising priming a T cell response in said animal by administering an immunologically effective amount of the vaccine of claim 182 .
193. The method of claim 192 , further comprising the step of boosting the immune response in said animal.
194. The method of claim 193 , wherein said boosting is effected by administering an immunologically effective amount of a vaccine of claim 182 or an immunologically effective amount of a heterologous vaccine.
195. The method of claim 194 , wherein said heterologous vaccine is a DNA vaccine.
196. A method of immunizing or treating an animal comprising boosting a T cell response in said animal by administering an immunologically effective amount of the vaccine of claim 182 .
197. The method of claim 196 , further comprising the step of priming a T cell response in said animal.
198. The method of claim 197 , wherein said priming is effected by administering an immunologically effective amount of a vaccine of claim 182 or an immunologically effective amount of a heterologous vaccine.
199. The method of claim 198 , wherein said heterologous vaccine is a DNA vaccine.
200. A method of immunizing or treating an animal comprising priming a T cell response in said animal by administering an immunologically effective amount of the vaccine of claim 187 .
201. The method of claim 200 further comprising the step of boosting the immune response in said animal.
202. The method of claim 201 , wherein said boosting is effected by administering an immunologically effective amount of a vaccine of claim 187 or an immunologically effective amount of a heterologous vaccine.
203. The method of claim 202 , wherein said heterologous vaccine is a DNA vaccine or a viral vaccine or a canery pox vaccine.
204. A method of immunizing or treating an animal comprising boosting a T cell response in said animal by administering an immunologically effective amount of the vaccine of claim 187 .
205. The method of claim 204 , further comprising the step of priming a T cell response in said animal.
206. The method of claim 205 , wherein said priming is effected by administering an immunologically effective amount of a vaccine of claim 187 or an immunologically effective amount of a heterologous vaccine.
207. The method of claim 206 , wherein said heterologous vaccine is a DNA vaccine or a viral vaccine or a canery pox vaccine.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/244,065 US20030099668A1 (en) | 2001-09-14 | 2002-09-16 | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use |
US13/294,006 US8691209B2 (en) | 2001-09-14 | 2011-11-10 | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use |
US14/162,600 US9950055B2 (en) | 2001-09-14 | 2014-01-23 | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US31899401P | 2001-09-14 | 2001-09-14 | |
US37414502P | 2002-04-22 | 2002-04-22 | |
US10/244,065 US20030099668A1 (en) | 2001-09-14 | 2002-09-16 | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/294,006 Continuation US8691209B2 (en) | 2001-09-14 | 2011-11-10 | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use |
Publications (1)
Publication Number | Publication Date |
---|---|
US20030099668A1 true US20030099668A1 (en) | 2003-05-29 |
Family
ID=26981773
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/244,065 Abandoned US20030099668A1 (en) | 2001-09-14 | 2002-09-16 | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use |
US13/294,006 Expired - Lifetime US8691209B2 (en) | 2001-09-14 | 2011-11-10 | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use |
US14/162,600 Expired - Lifetime US9950055B2 (en) | 2001-09-14 | 2014-01-23 | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/294,006 Expired - Lifetime US8691209B2 (en) | 2001-09-14 | 2011-11-10 | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use |
US14/162,600 Expired - Lifetime US9950055B2 (en) | 2001-09-14 | 2014-01-23 | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use |
Country Status (13)
Country | Link |
---|---|
US (3) | US20030099668A1 (en) |
EP (2) | EP1450856B1 (en) |
JP (2) | JP4516748B2 (en) |
CN (1) | CN1599623B (en) |
AT (1) | ATE447967T1 (en) |
AU (2) | AU2002339224B2 (en) |
CA (1) | CA2492826C (en) |
CY (1) | CY1110585T1 (en) |
DE (1) | DE60234375D1 (en) |
DK (1) | DK1450856T3 (en) |
ES (1) | ES2335979T3 (en) |
HK (1) | HK1067058A1 (en) |
WO (1) | WO2003024481A2 (en) |
Cited By (65)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030091593A1 (en) * | 2001-09-14 | 2003-05-15 | Cytos Biotechnology Ag | In vivo activation of antigen presenting cells for enhancement of immune responses induced by virus like particles |
US20030129588A1 (en) * | 1989-11-08 | 2003-07-10 | Baylor College Of Medicine | Methods and reagents to detect and characterize norwalk and related viruses |
US20030175287A1 (en) * | 2001-01-03 | 2003-09-18 | Yale University | Innate immune system-directed vaccines |
US20030180755A1 (en) * | 2001-11-19 | 2003-09-25 | Robin Hwang | Pharmaceutical compositions in particulate form |
US20030232055A1 (en) * | 2000-07-31 | 2003-12-18 | Ruslan Medzhitov | Innate immune system-directed vaccines |
US20050025781A1 (en) * | 2003-07-30 | 2005-02-03 | Vaccine Research Institute Of San Diego | Rodent hepatitis B virus core proteins as vaccine platforms and methods of use thereof |
US20050025782A1 (en) * | 2003-07-30 | 2005-02-03 | Vaccine Research Institute Of San Diego | Human hepatitis B virus core proteins as vaccine platforms and methods of use thereof |
WO2003103605A3 (en) * | 2002-06-07 | 2005-03-31 | Large Scale Biology Corp | Flexible vaccine assembly and vaccine delivery platform |
WO2004032622A3 (en) * | 2002-09-03 | 2005-04-28 | Large Scale Biology Corp | Production of peptides in plants as viral coat protein fusions |
US20050214321A1 (en) * | 2003-12-01 | 2005-09-29 | Dow Global Technologies Inc. | Recombinant icosahedral virus like particle production in pseudomonads |
US20050266023A1 (en) * | 2001-11-07 | 2005-12-01 | Sina Bavari | Generation of virus-like particles and use as panfilovirus vaccine |
US20060121468A1 (en) * | 2002-06-26 | 2006-06-08 | Allnutt F C T | Viruses and virus-like particles for multiple antigen and target display |
WO2006063974A2 (en) * | 2004-12-13 | 2006-06-22 | Cytos Biotechnology Ag | Il-15 antigen arrays and uses thereof |
WO2006037787A3 (en) * | 2004-10-05 | 2006-07-06 | Cytos Biotechnology Ag | Vlp-antigen conjugates and their uses as vaccines |
US20060165723A1 (en) * | 2004-09-03 | 2006-07-27 | Consejo Superior De Investigaciones Cientificas | Nucleic acid sequences encoding proteins capable of associating into a virus-like particle |
US20060204475A1 (en) * | 2003-03-26 | 2006-09-14 | Cytos Biotechnology Ag | Melan-a peptide analogue-virus-like-particle conjugates |
US20060210588A1 (en) * | 2003-03-26 | 2006-09-21 | Cytos Biotechnology Ag | Hiv-peptide-carrier-conjugates |
US20060251623A1 (en) * | 2003-07-10 | 2006-11-09 | Caytos Biotechnology Ag | Packaged virus-like particles |
US20060251677A1 (en) * | 2003-03-26 | 2006-11-09 | Cytos Biotechnology Ag | Packaging of immunostimulatory oligonucleotides into virus-like particles: method of preparation and use |
US20070179101A1 (en) * | 2004-02-27 | 2007-08-02 | Harukazu Kitagawa | Immunostimulatory oligonucleotide that induces interferon alpha |
US20070224205A1 (en) * | 2006-03-07 | 2007-09-27 | Powell Thomas J | Compositions that include hemagglutinin, methods of making and methods of use thereof |
US20080139797A1 (en) * | 2006-12-12 | 2008-06-12 | Integrated Dna Technologies, Inc. | Oligonucleotides containing high concentrations of guanine monomers |
US20080193474A1 (en) * | 2005-04-25 | 2008-08-14 | Griesgraber George W | Immunostimulatory Compositions |
US20080274131A1 (en) * | 2001-01-19 | 2008-11-06 | Cytos Biotechnology Ag | Molecular antigen arrary |
US20080292652A1 (en) * | 2004-09-21 | 2008-11-27 | Cytos Biotechnology Ag | Virus-Like Particles Comprising a Fusion Protein of the Coat Protein of Ap205 and an Antigenic Polypeptide |
US20090093019A1 (en) * | 2007-04-27 | 2009-04-09 | Phelps Jamie P | Production and in vivo assembly of soluble recombinant icosahedral virus-like particles |
US20090246215A1 (en) * | 2002-07-19 | 2009-10-01 | Cytos Biotechnology Ag | Amyloid beta1-6 antigen arrays |
US20090269371A1 (en) * | 2005-04-13 | 2009-10-29 | Aurelija Zvirbliene | Process for the production of monoclonal antibodies |
US20090298710A1 (en) * | 2005-12-15 | 2009-12-03 | Farokhzad Omid C | System for Screening Particles |
US20100022680A1 (en) * | 2006-06-23 | 2010-01-28 | Massachusetts Institute Of Technology | Microfluidic Synthesis of Organic Nanoparticles |
US20100203142A1 (en) * | 2007-04-04 | 2010-08-12 | Massachusetts Institute Of Technology | Amphiphilic compound assisted nanoparticles for targeted delivery |
US20100266491A1 (en) * | 2006-03-31 | 2010-10-21 | Massachusetts Institute Of Technology | System for targeted delivery of therapeutic agents |
US20100273237A1 (en) * | 2006-06-12 | 2010-10-28 | Cytos Biotechnology Ag | Processes for Packaging Oligonucleotides Into Virus-Like Particles of RNA Bacteriophages |
US20100297233A1 (en) * | 2007-02-09 | 2010-11-25 | Massachusetts Institute Of Technology | Oscillating cell culture bioreactor |
US20110014231A1 (en) * | 2007-11-05 | 2011-01-20 | Mor Research Applications Ltd | Anti-measles cancer immunotherapy |
US7883843B2 (en) | 2003-07-30 | 2011-02-08 | Vaccine Research Institute Of San Diego | Hepatitis virus core proteins as vaccine platforms and methods of use thereof |
US20110052697A1 (en) * | 2006-05-17 | 2011-03-03 | Gwangju Institute Of Science & Technology | Aptamer-Directed Drug Delivery |
US20110070267A1 (en) * | 2002-06-20 | 2011-03-24 | Bachmann Martin F | Packaged virus-like particles for use as adjuvants: method of preparation and use |
US20110135680A1 (en) * | 2008-04-18 | 2011-06-09 | Langzhou Song | Deletion mutants of flagellin and methods of use |
WO2012109668A1 (en) * | 2011-02-11 | 2012-08-16 | The Trustees Of The University Of Pennsylvania | Nucleic acid molecule encoding hepatitis b virus core protein and vaccine comprising the same |
US20120263743A1 (en) * | 2009-04-30 | 2012-10-18 | Cytos Biotechnology Ag | Influenza hemagglutinin compositions and uses thereof |
WO2013096866A3 (en) * | 2011-12-21 | 2013-10-03 | Apse, Llc | Processes using vlps with capsids resistant to hydrolases |
US8562998B2 (en) | 2008-10-12 | 2013-10-22 | President And Fellows Of Harvard College | Targeting of antigen presenting cells with immunonanotherapeutics |
US8574564B2 (en) | 2005-12-14 | 2013-11-05 | Cytos Biotechnology Ag | Immunostimulatory nucleic acid packaged particles for the treatment of hypersensitivity |
US8637028B2 (en) | 2008-10-12 | 2014-01-28 | President And Fellows Of Harvard College | Adjuvant incorporation in immunonanotherapeutics |
US8691209B2 (en) | 2001-09-14 | 2014-04-08 | Cytos Biotechnology Ag | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use |
US20140154284A1 (en) * | 2011-07-18 | 2014-06-05 | The United States of America,as represented by the Secretary Department of Health & Human Services | Methods and compositions for inhibiting polyomavirus-associated pathology |
US8906381B2 (en) | 2008-10-12 | 2014-12-09 | Massachusetts Institute Of Technology | Immunonanotherapeutics that provide IGG humoral response without T-cell antigen |
US8932598B2 (en) | 2012-08-28 | 2015-01-13 | Vaxinnate Corporation | Fusion proteins and methods of use |
US8932595B2 (en) | 2008-10-12 | 2015-01-13 | Massachusetts Institute Of Technology | Nicotine immunonanotherapeutics |
US9080014B2 (en) | 2006-05-15 | 2015-07-14 | Massachusetts Institute Of Technology | Polymers for functional particles |
US9238679B2 (en) | 2011-02-11 | 2016-01-19 | The Trustees Of The University Of Pennslyvania | Nucleic acid molecule encoding hepatitis B virus core protein and surface antigen protein and vaccine comprising the same |
WO2016109310A1 (en) | 2014-12-31 | 2016-07-07 | Checkmate Pharmaceuticals, Llc | Combination tumor immunotherapy |
US9474717B2 (en) | 2007-10-12 | 2016-10-25 | Massachusetts Institute Of Technology | Vaccine nanotechnology |
US9492400B2 (en) | 2004-11-04 | 2016-11-15 | Massachusetts Institute Of Technology | Coated controlled release polymer particles as efficient oral delivery vehicles for biopharmaceuticals |
US9549901B2 (en) | 2010-09-03 | 2017-01-24 | The Brigham And Women's Hospital, Inc. | Lipid-polymer hybrid particles |
WO2017173334A1 (en) | 2016-04-01 | 2017-10-05 | Checkmate Pharmaceuticals, Inc. | Fc receptor-mediated drug delivery |
US9822361B2 (en) | 2013-06-19 | 2017-11-21 | Apse, Inc. | Compositions and methods using capsids resistant to hydrolases |
US10117921B2 (en) | 2013-09-19 | 2018-11-06 | Zoetis Services Llc | Oil-based adjuvants |
US10238736B2 (en) | 2008-06-27 | 2019-03-26 | Zoetis Services Llc | Adjuvant compositions |
US10434171B2 (en) | 2016-12-23 | 2019-10-08 | United States of America as Represented by Secretary of Agriculture | Microfluidized Mycobacterium avium fragments as an adjuvant and carrier for mucosal vaccine delivery |
US10478487B2 (en) | 2015-01-16 | 2019-11-19 | Zoetis Services Llc | Foot-and-mouth disease vaccine |
US11018610B2 (en) | 2017-01-27 | 2021-05-25 | Franklin Electric Co., Inc. | Motor drive system and method |
US20220111040A1 (en) * | 2018-08-07 | 2022-04-14 | Institute Of Biophyscis, Chinese Academy Of Sciences | Method for activating cd4+t cell |
US12084655B2 (en) | 2018-04-09 | 2024-09-10 | Checkmate Pharmaceuticals | Packaging oligonucleotides into virus-like particles |
Families Citing this family (137)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2003219383B2 (en) | 2002-04-22 | 2010-08-26 | Bioniche Life Sciences Inc. | Oligonucleotide compositions and their use for the modulation of immune responses |
MXPA05000277A (en) | 2002-07-17 | 2005-03-31 | Cytos Biotechnology Ag | Molecular antigen arrays using a virus like particle derived from the ap205 coat protein. |
MXPA04011247A (en) * | 2002-07-19 | 2005-02-17 | Cytos Biotechnology Ag | Ghrelin-carrier conjugates. |
US20080159957A1 (en) | 2002-10-01 | 2008-07-03 | W Michael Kavanaugh | Anti-Cancer and Anti-Infectious Disease Compositions and Methods for Using Same |
CA2501812C (en) | 2002-10-11 | 2012-07-10 | Mariagrazia Pizza | Polypeptide-vaccines for broad protection against hypervirulent meningococcal lineages |
ATE544466T1 (en) | 2002-10-29 | 2012-02-15 | Coley Pharm Group Inc | USE OF CPG OLIGONUCLEOTIDES TO TREAT HEPATITIS C VIRUS INFECTION |
WO2004053104A2 (en) | 2002-12-11 | 2004-06-24 | Coley Pharmaceutical Group, Inc. | 5’ cpg nucleic acids and methods of use |
ES2411080T3 (en) | 2003-01-30 | 2013-07-04 | Novartis Ag | Injectable vaccines against multiple serogroups of meningococci |
WO2004102198A2 (en) * | 2003-05-15 | 2004-11-25 | Cytos Biotechnology Ag | Selection of b cells with specificity of interest: method of preparation and use |
CN1798563A (en) * | 2003-05-15 | 2006-07-05 | 独立行政法人科学技术振兴机构 | Immunostimulant |
EP1646427A1 (en) * | 2003-07-22 | 2006-04-19 | Cytos Biotechnology AG | Cpg-packaged liposomes |
GB0323103D0 (en) | 2003-10-02 | 2003-11-05 | Chiron Srl | De-acetylated saccharides |
RU2378010C2 (en) | 2003-10-02 | 2010-01-10 | Новартис Вэксинес Энд Дайэгностикс С.Р.Л. | Liquid vaccines for multiple meningococcal serogroups |
US20050191317A1 (en) * | 2004-01-20 | 2005-09-01 | Cytos Biotechnology Ag | Ghrelin-carrier conjugates |
DE202005022108U1 (en) | 2004-03-09 | 2013-11-12 | Novartis Vaccines And Diagnostics, Inc. | Influenza virus vaccines |
GB0500787D0 (en) | 2005-01-14 | 2005-02-23 | Chiron Srl | Integration of meningococcal conjugate vaccination |
BRPI0510315A (en) | 2004-04-30 | 2007-10-16 | Chiron Srl | integration of meningococcal conjugate vaccination |
GB0409745D0 (en) | 2004-04-30 | 2004-06-09 | Chiron Srl | Compositions including unconjugated carrier proteins |
GB0410866D0 (en) | 2004-05-14 | 2004-06-16 | Chiron Srl | Haemophilius influenzae |
WO2006078294A2 (en) | 2004-05-21 | 2006-07-27 | Novartis Vaccines And Diagnostics Inc. | Alphavirus vectors for respiratory pathogen vaccines |
JP2008500364A (en) * | 2004-05-25 | 2008-01-10 | キメラコア, インコーポレイテッド | Self-assembling nanoparticle drug delivery system |
US20090317420A1 (en) | 2004-07-29 | 2009-12-24 | Chiron Corporation | Immunogenic compositions for gram positive bacteria such as streptococcus agalactiae |
EP1784210A2 (en) * | 2004-08-04 | 2007-05-16 | Cytos Biotechnology AG | Carrier conjugates of gnrh-peptides |
BRPI0516476A (en) * | 2004-10-05 | 2008-09-02 | Cytos Biotechnology Ag | vlp antigen conjugates and their use as vaccines |
GB0424092D0 (en) | 2004-10-29 | 2004-12-01 | Chiron Srl | Immunogenic bacterial vesicles with outer membrane proteins |
CA2596248A1 (en) * | 2005-01-31 | 2006-08-10 | Vaxinnate Corporation | Method to identify polypeptide toll-like receptor (tlr) ligands |
GB0502095D0 (en) | 2005-02-01 | 2005-03-09 | Chiron Srl | Conjugation of streptococcal capsular saccharides |
HUE027400T2 (en) | 2005-02-18 | 2016-10-28 | Glaxosmithkline Biologicals Sa | Proteins and nucleic acids from meningitis/sepsis-associated escherichia coli |
ES2385045T3 (en) | 2005-02-18 | 2012-07-17 | Novartis Vaccines And Diagnostics, Inc. | Urotogenic Escherichia coli immunogens |
US7767212B2 (en) | 2005-03-18 | 2010-08-03 | Cytos Biotechnology Ag | CAT allergen conjugates and uses thereof |
EP1736538A1 (en) | 2005-06-21 | 2006-12-27 | Cytos Biotechnology AG | Process for the preparative purification of virus-like-particles (VLPs) |
ES2310062B1 (en) | 2005-07-15 | 2009-11-13 | Bionostra, S.L. | PSEUDOVIRAL PARTICLES CHEMICAL EMPTY DERIVED FROM VIRUS CAUSING INFECTIOUS BURSITIS DISEASE (IBDV), PROCEDURE OF OBTAINING AND APPLICATIONS. |
KR20080047564A (en) | 2005-09-28 | 2008-05-29 | 사이토스 바이오테크놀로지 아게 | Interleukin-1 conjugates and uses thereof |
WO2007047749A1 (en) | 2005-10-18 | 2007-04-26 | Novartis Vaccines And Diagnostics Inc. | Mucosal and systemic immunizations with alphavirus replicon particles |
EP2360175B1 (en) | 2005-11-22 | 2014-07-16 | Novartis Vaccines and Diagnostics, Inc. | Norovirus and Sapovirus virus-like particles (VLPs) |
GB0524066D0 (en) | 2005-11-25 | 2006-01-04 | Chiron Srl | 741 ii |
EP2357184B1 (en) | 2006-03-23 | 2015-02-25 | Novartis AG | Imidazoquinoxaline compounds as immunomodulators |
AU2013204383B2 (en) * | 2006-06-12 | 2016-09-22 | Kuros Us Llc | Processes for packaging oligonucleotides into virus-like particles of RNA bacteriophages |
EP2586790A3 (en) | 2006-08-16 | 2013-08-14 | Novartis AG | Immunogens from uropathogenic Escherichia coli |
WO2008071774A1 (en) * | 2006-12-14 | 2008-06-19 | Cytos Biotechnology Ag | Purification process for coat protein of rna bacteriophages |
GB0713880D0 (en) | 2007-07-17 | 2007-08-29 | Novartis Ag | Conjugate purification |
GB0714963D0 (en) | 2007-08-01 | 2007-09-12 | Novartis Ag | Compositions comprising antigens |
RU2471497C2 (en) | 2007-09-12 | 2013-01-10 | Новартис Аг | Mutant antigens gas57 and gas57 antibodies |
GB0818453D0 (en) | 2008-10-08 | 2008-11-12 | Novartis Ag | Fermentation processes for cultivating streptococci and purification processes for obtaining cps therefrom |
CN104292312A (en) | 2007-12-21 | 2015-01-21 | 诺华股份有限公司 | Mutant forms of streptolysin o |
EP2245048B1 (en) | 2008-02-21 | 2014-12-31 | Novartis AG | Meningococcal fhbp polypeptides |
CN101559224B (en) * | 2008-04-18 | 2012-07-11 | 北京生物制品研究所 | Poliomyelitis vaccine |
NO339169B1 (en) * | 2008-04-24 | 2016-11-14 | Chemoforma Ltd | Functional fish feed comprising peptidoglycan and nucleotides |
GB0808780D0 (en) * | 2008-05-15 | 2008-06-18 | Big Dna Ltd | Fish vaccines |
US9296790B2 (en) | 2008-10-03 | 2016-03-29 | The United States Of America, As Represented By The Secretary, Department Of Health And Human Services | Methods and compositions for protein delivery |
PE20110998A1 (en) * | 2008-12-09 | 2012-02-10 | Coley Pharm Group Inc | IMMUNOSTIMULATORY OLIGONUCLEOTIDES |
EP2376108B1 (en) | 2008-12-09 | 2017-02-22 | Pfizer Vaccines LLC | IgE CH3 PEPTIDE VACCINE |
MX2011007456A (en) | 2009-01-12 | 2011-08-03 | Novartis Ag | Cna_b domain antigens in vaccines against gram positive bacteria. |
US8568732B2 (en) | 2009-03-06 | 2013-10-29 | Novartis Ag | Chlamydia antigens |
SG175092A1 (en) | 2009-04-14 | 2011-11-28 | Novartis Ag | Compositions for immunising against staphylococcus aerus |
WO2010122164A1 (en) | 2009-04-23 | 2010-10-28 | Cytos Biotechnology Ag | VIRUS-LIKE PARTICLES OF BACTERIOPHAGE φCB5 |
SG177533A1 (en) | 2009-07-07 | 2012-02-28 | Novartis Ag | Conserved escherichia coli immunogens |
SG178035A1 (en) | 2009-07-16 | 2012-03-29 | Novartis Ag | Detoxified escherichia coli immunogens |
PE20120817A1 (en) | 2009-07-30 | 2012-07-07 | Pfizer Vaccines Llc | ANTIGENIC TAU PEPTIDES AND USES OF THEM |
AU2010288240B2 (en) | 2009-08-27 | 2014-03-27 | Novartis Ag | Hybrid polypeptides including meningococcal fHBP sequences |
PE20161560A1 (en) * | 2009-09-03 | 2017-01-11 | Pfizer Vaccines Llc | PCSK9 VACCINE |
JP2013506651A (en) | 2009-09-30 | 2013-02-28 | ノバルティス アーゲー | Staphylococcus. aureus type 5 and type 8 capsular polysaccharide conjugates |
GB0918392D0 (en) | 2009-10-20 | 2009-12-02 | Novartis Ag | Diagnostic and therapeutic methods |
AU2010310985B2 (en) | 2009-10-27 | 2014-11-06 | Glaxosmithkline Biologicals S.A. | Modified meningococcal fHBP polypeptides |
GB0919690D0 (en) | 2009-11-10 | 2009-12-23 | Guy S And St Thomas S Nhs Foun | compositions for immunising against staphylococcus aureus |
EP2519265B1 (en) | 2009-12-30 | 2018-11-14 | GlaxoSmithKline Biologicals SA | Polysaccharide immunogens conjugated to e. coli carrier proteins |
TWI378144B (en) * | 2010-02-09 | 2012-12-01 | Univ Nat Pingtung Sci & Tech | Recombinant plasmic containing multicopy cpg motifs and transformant thereof for applying on dna adjuvant in avian vaccines |
GB201003333D0 (en) | 2010-02-26 | 2010-04-14 | Novartis Ag | Immunogenic proteins and compositions |
CA2786940C (en) * | 2010-03-16 | 2019-09-24 | Biontech Ag | Tumor vaccination involving a humoral immune response, and proteins therefor including all or a portion of a hepatitis b virus core antigen protein and an epitope of claudin 18.2 |
GB201005625D0 (en) | 2010-04-01 | 2010-05-19 | Novartis Ag | Immunogenic proteins and compositions |
WO2011130379A1 (en) | 2010-04-13 | 2011-10-20 | Novartis Ag | Benzonapthyridine compositions and uses thereof |
JP2013532008A (en) | 2010-05-28 | 2013-08-15 | テトリス オンライン インコーポレイテッド | Interactive hybrid asynchronous computer game infrastructure |
CA2800774A1 (en) | 2010-06-07 | 2011-12-15 | Pfizer Vaccines Llc | Ige ch3 peptide vaccine |
GB201009861D0 (en) | 2010-06-11 | 2010-07-21 | Novartis Ag | OMV vaccines |
US9192661B2 (en) | 2010-07-06 | 2015-11-24 | Novartis Ag | Delivery of self-replicating RNA using biodegradable polymer particles |
GB201101665D0 (en) | 2011-01-31 | 2011-03-16 | Novartis Ag | Immunogenic compositions |
WO2012072769A1 (en) | 2010-12-01 | 2012-06-07 | Novartis Ag | Pneumococcal rrgb epitopes and clade combinations |
CA2860331A1 (en) | 2010-12-24 | 2012-06-28 | Novartis Ag | Compounds |
EP2471926A3 (en) | 2010-12-30 | 2012-07-11 | Intervet International BV | Immunostimulatory oligodeoxynucleotides |
US20140004142A1 (en) | 2011-03-02 | 2014-01-02 | Pfizer Inc. | Pcsk9 vaccine |
US20140286978A1 (en) | 2011-05-13 | 2014-09-25 | Tokyo Institute Of Technology | Cytotoxic t lymphocyte inducer |
MX346596B (en) * | 2011-05-26 | 2017-03-23 | Intervet Int Bv | Immunostimulatory oligodeoxynucleotides. |
TR201808393T4 (en) | 2011-05-26 | 2018-07-23 | Intervet Int Bv | Immunostimulatory oligodeoxynucleotides. |
US11896636B2 (en) | 2011-07-06 | 2024-02-13 | Glaxosmithkline Biologicals Sa | Immunogenic combination compositions and uses thereof |
EP2729168A2 (en) | 2011-07-06 | 2014-05-14 | Novartis AG | Immunogenic compositions and uses thereof |
GB201114923D0 (en) | 2011-08-30 | 2011-10-12 | Novartis Ag | Immunogenic proteins and compositions |
JP2014531442A (en) | 2011-09-14 | 2014-11-27 | ノバルティス アーゲー | Escherichia coli vaccine combination |
RU2014127714A (en) | 2011-12-08 | 2016-01-27 | Новартис Аг | TOXIN VACCINE Clostridium difficile |
JP2015503907A (en) | 2011-12-22 | 2015-02-05 | エフ.ホフマン−ラ ロシュ アーゲーF. Hoffmann−La Roche Aktiengesellschaft | Full-length antibody display system for eukaryotic cells and use thereof |
WO2013108272A2 (en) | 2012-01-20 | 2013-07-25 | International Centre For Genetic Engineering And Biotechnology | Blood stage malaria vaccine |
CN104321335A (en) | 2012-02-24 | 2015-01-28 | 诺华股份有限公司 | Pilus proteins and compositions |
AU2013240248B2 (en) | 2012-03-26 | 2018-12-20 | The United States Of America, As Represented By The Secretary, Department Of Health And Human Services | Delivery of packaged RNA to mammalian cells |
CA2871520C (en) | 2012-04-26 | 2020-12-29 | Novartis Ag | Antigens from non-typeable h. influenzae |
US10279026B2 (en) | 2012-04-26 | 2019-05-07 | Glaxosmithkline Biologicals Sa | Antigens and antigen combinations |
SG11201407440WA (en) | 2012-05-22 | 2014-12-30 | Novartis Ag | Meningococcus serogroup x conjugate |
JP2015522580A (en) | 2012-07-06 | 2015-08-06 | ノバルティス アーゲー | Immunological compositions and uses thereof |
EA201590427A1 (en) | 2012-10-02 | 2015-09-30 | Глаксосмитклайн Байолоджикалс С.А. | NONLINEAR SUCHARIDE CONJUGATES |
SG11201500979RA (en) | 2012-10-03 | 2015-07-30 | Glaxosmithkline Biolog Sa | Immunogenic composition |
CA2936092A1 (en) | 2013-01-23 | 2014-07-31 | The Board Of Trustees Of The Leland Stanford Junior University | Stabilized hepatitis b core polypeptide |
EP4272750A3 (en) | 2013-02-07 | 2024-01-24 | Children's Medical Center, Corp. | Protein antigens that provide protection against pneumococcal colonization and/or disease |
EA030005B1 (en) | 2013-03-15 | 2018-06-29 | Лос-Анджелес Биомедикал Ресерч Институт Эт Харбор-Укла Медикал Центер | Compositions and methods for treating fungal and bacterial pathogens |
EP2968517A4 (en) * | 2013-03-15 | 2017-02-22 | Bullet Biotechnology, Inc. | Specific multivalent virus-like particle vaccines and uses thereof |
ES2750608T3 (en) | 2013-07-25 | 2020-03-26 | Exicure Inc | Nucleic acid-based spherical constructs as immunostimulatory agents for prophylactic and therapeutic use |
WO2015024992A2 (en) * | 2013-08-22 | 2015-02-26 | Cytos Biotechnology Ag | Treatment of asthma |
SG10201811190SA (en) | 2013-12-16 | 2019-01-30 | Us Health | Cancer immunotherapy by delivering class ii mhc antigens using a vlp-replicon |
WO2015123291A1 (en) | 2014-02-11 | 2015-08-20 | The Usa, As Represented By The Secretary, Dept. Of Health And Human Services | Pcsk9 vaccine and methods of using the same |
EP3508198A1 (en) | 2014-06-04 | 2019-07-10 | Exicure, Inc. | Multivalent delivery of immune modulators by liposomal spherical nucleic acids for prophylactic or therapeutic applications |
AU2015349680A1 (en) | 2014-11-21 | 2017-06-08 | Northwestern University | The sequence-specific cellular uptake of spherical nucleic acid nanoparticle conjugates |
AU2016207099C1 (en) | 2015-01-15 | 2021-02-04 | University Of Copenhagen | Virus-like particle with efficient epitope display |
ES2854726T3 (en) | 2015-10-30 | 2021-09-22 | The Univ Of Copenhagen | Virus-like particle with efficient epitope presentation |
WO2017184655A1 (en) * | 2016-04-18 | 2017-10-26 | University Of Florida Research Foundaiton, Inc. | Stable poliovirus variants and uses thereof |
US10898569B2 (en) | 2016-04-27 | 2021-01-26 | Allergy Therapeutics (Uk) Limited | Treatment of peanut allergy |
US10946078B2 (en) | 2016-04-27 | 2021-03-16 | Benchmark Animal Health Ltd. | Treatment of canine atopic dermatitis |
US11364304B2 (en) | 2016-08-25 | 2022-06-21 | Northwestern University | Crosslinked micellar spherical nucleic acids |
WO2018104889A1 (en) | 2016-12-06 | 2018-06-14 | Glaxosmithkline Biologicals Sa | Purification process for capsular polysaccharide |
US11696954B2 (en) | 2017-04-28 | 2023-07-11 | Exicure Operating Company | Synthesis of spherical nucleic acids using lipophilic moieties |
GB2571696B (en) | 2017-10-09 | 2020-05-27 | Compass Pathways Ltd | Large scale method for the preparation of Psilocybin and formulations of Psilocybin so produced |
WO2019173438A1 (en) | 2018-03-06 | 2019-09-12 | Stc. Unm | Compositions and methods for reducing serum triglycerides |
CA3121843A1 (en) | 2018-12-20 | 2020-06-25 | Saiba AG | Virus-like particles of cmv modified by fusion |
EP3955936A1 (en) | 2019-04-17 | 2022-02-23 | COMPASS Pathfinder Limited | Treatment of depression and other various disorders with psilocybin |
US20220280632A1 (en) * | 2019-07-24 | 2022-09-08 | Bryce Chackerian | Malaria immunogen and methods for using same |
CA3155202A1 (en) | 2019-10-23 | 2021-04-29 | Arthur M. Krieg | Synthetic rig-i-like receptor agonists |
CN111166727A (en) * | 2019-11-15 | 2020-05-19 | 河南省生物工程技术研究中心 | Tumor immunotherapy compound and preparation method and application thereof |
CN110862435B (en) * | 2019-12-05 | 2021-09-24 | 中国农业大学 | African swine fever CTL epitope polypeptide and application thereof |
CN111214663B (en) * | 2020-03-06 | 2022-03-15 | 中国人民解放军军事科学院军事医学研究院 | Application of TMED2 as target point for treating Ebola virus disease |
CN111253494B (en) * | 2020-03-10 | 2022-04-26 | 天康制药(苏州)有限公司 | Fusion protein of pig foot-and-mouth disease virus and pig rotavirus, viroid particle, vaccine and preparation method |
CN111281973A (en) * | 2020-03-31 | 2020-06-16 | 清华大学 | Vaccine adjuvant containing TRPV2 agonist and application thereof |
CU20200028A7 (en) * | 2020-04-20 | 2021-11-04 | Ct Ingenieria Genetica Biotecnologia | VIRAL NUCLEOPROTEIN AND FORMULATIONS CONTAINING IT |
WO2021252450A1 (en) * | 2020-06-08 | 2021-12-16 | Adaptive Phage Therapeutics, Inc. | Phage display vaccine for covid-19 using a novel peptide sequence |
BR112022023261A2 (en) | 2020-06-12 | 2022-12-27 | Glaxosmithkline Biologicals Sa | BACTERIAL IMMUNIZATION USING NANOPARTICLE VACCINE |
WO2021260131A1 (en) | 2020-06-25 | 2021-12-30 | Saiba AG | Virus-like particles of cmv modified by fusion |
CN113136372B (en) * | 2021-05-28 | 2023-08-01 | 广西大学 | Construction method of recombinant phage |
WO2023111826A1 (en) | 2021-12-14 | 2023-06-22 | Glaxosmithkline Biologicals Sa | Bacterial immunization using qbeta hairpin nanoparticle constructs |
US12060328B2 (en) | 2022-03-04 | 2024-08-13 | Reset Pharmaceuticals, Inc. | Co-crystals or salts of psilocybin and methods of treatment therewith |
TW202417630A (en) | 2022-08-30 | 2024-05-01 | 瑞士商賽巴動物健康股份有限公司 | Veterinary compositions of modified virus-like particles of cmv and ngf antigens |
WO2024081953A2 (en) * | 2022-10-14 | 2024-04-18 | Longhorn Vaccines And Diagnostics, Llc | Vaccines and antibodies for the treatment and prevention of microbial infections |
WO2024091589A1 (en) * | 2022-10-28 | 2024-05-02 | Unm Rainforest Innovations | Malaria immunogen and methods for using same |
Citations (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5057540A (en) * | 1987-05-29 | 1991-10-15 | Cambridge Biotech Corporation | Saponin adjuvant |
US5698424A (en) * | 1991-06-28 | 1997-12-16 | British Technology Group Ltd. | Capsid forming and cystein modified chimaeric MS2-coat protein |
US5935821A (en) * | 1995-01-17 | 1999-08-10 | Board Of Trustees Of The University Of Kentucky | Polynucleotides related to monoclonal antibody 1A7 and use for the treatment of melanoma and small cell carcinoma |
US5962636A (en) * | 1998-08-12 | 1999-10-05 | Amgen Canada Inc. | Peptides capable of modulating inflammatory heart disease |
US6159728A (en) * | 1992-06-26 | 2000-12-12 | Btg International Limited | RNA bacteriophage-based delivery system |
US6194388B1 (en) * | 1994-07-15 | 2001-02-27 | The University Of Iowa Research Foundation | Immunomodulatory oligonucleotides |
US6207646B1 (en) * | 1994-07-15 | 2001-03-27 | University Of Iowa Research Foundation | Immunostimulatory nucleic acid molecules |
US6239116B1 (en) * | 1994-07-15 | 2001-05-29 | University Of Iowa Research Foundation | Immunostimulatory nucleic acid molecules |
US20010044416A1 (en) * | 2000-01-20 | 2001-11-22 | Mccluskie Michael J. | Immunostimulatory nucleic acids for inducing a Th2 immune response |
US6326200B1 (en) * | 1997-06-23 | 2001-12-04 | Ludwig Institute For Cancer Research | Isolated nona-and decapeptides which bind to HLA molecules, and the use thereof |
US6339068B1 (en) * | 1997-05-20 | 2002-01-15 | University Of Iowa Research Foundation | Vectors and methods for immunization or therapeutic protocols |
US6406705B1 (en) * | 1997-03-10 | 2002-06-18 | University Of Iowa Research Foundation | Use of nucleic acids containing unmethylated CpG dinucleotide as an adjuvant |
US20020081295A1 (en) * | 1998-10-21 | 2002-06-27 | Schiller John T. | Virus-like particles for the induction of autoantibodies |
US6429199B1 (en) * | 1994-07-15 | 2002-08-06 | University Of Iowa Research Foundation | Immunostimulatory nucleic acid molecules for activating dendritic cells |
US20030050268A1 (en) * | 2001-03-29 | 2003-03-13 | Krieg Arthur M. | Immunostimulatory nucleic acid for treatment of non-allergic inflammatory diseases |
US20030060440A1 (en) * | 1999-04-12 | 2003-03-27 | Dennis Klinman | Oligodeoxynucleotide and its use to induce an immune response |
US6541438B1 (en) * | 1998-05-01 | 2003-04-01 | The Procter & Gamble Company | Laundry detergent and/or fabric care compositions comprising a modified cellulase |
US20030087848A1 (en) * | 2000-02-03 | 2003-05-08 | Bratzler Robert L. | Immunostimulatory nucleic acids for the treatment of asthma and allergy |
US20030091593A1 (en) * | 2001-09-14 | 2003-05-15 | Cytos Biotechnology Ag | In vivo activation of antigen presenting cells for enhancement of immune responses induced by virus like particles |
US20030219459A1 (en) * | 2002-01-18 | 2003-11-27 | Cytos Biotechnology Ag | Prion protein carrier-conjugates |
US20040005338A1 (en) * | 2002-06-20 | 2004-01-08 | Cytos Biotechnology Ag | Packaged virus-like particles for use as adjuvants: method of preparation and use |
US20040030118A1 (en) * | 1998-05-14 | 2004-02-12 | Hermann Wagner | Methods for regulating hematopoiesis using CpG-oligonucleotides |
US6727230B1 (en) * | 1994-03-25 | 2004-04-27 | Coley Pharmaceutical Group, Inc. | Immune stimulation by phosphorothioate oligonucleotide analogs |
US6949520B1 (en) * | 1999-09-27 | 2005-09-27 | Coley Pharmaceutical Group, Inc. | Methods related to immunostimulatory nucleic acid-induced interferon |
US7094409B2 (en) * | 2001-01-19 | 2006-08-22 | Cytos Biotechnology Ag | Antigen arrays for treatment of allergic eosinophilic diseases |
US20060204475A1 (en) * | 2003-03-26 | 2006-09-14 | Cytos Biotechnology Ag | Melan-a peptide analogue-virus-like-particle conjugates |
US20060210588A1 (en) * | 2003-03-26 | 2006-09-21 | Cytos Biotechnology Ag | Hiv-peptide-carrier-conjugates |
US7115266B2 (en) * | 2001-10-05 | 2006-10-03 | Cytos Biotechnology Ag | Angiotensin peptide-carrier conjugates and uses thereof |
US7128911B2 (en) * | 2001-01-19 | 2006-10-31 | Cytos Biotechnology Ag | Antigen arrays for treatment of bone disease |
US20060251623A1 (en) * | 2003-07-10 | 2006-11-09 | Caytos Biotechnology Ag | Packaged virus-like particles |
US20060251677A1 (en) * | 2003-03-26 | 2006-11-09 | Cytos Biotechnology Ag | Packaging of immunostimulatory oligonucleotides into virus-like particles: method of preparation and use |
US20070184068A1 (en) * | 2005-12-14 | 2007-08-09 | Cytos Biotechnology Ag | Immunostimulatory nucleic acid packaged particles for the treatment of hypersensitivity |
US7271156B2 (en) * | 1999-09-25 | 2007-09-18 | University Of Iowa Research Foundation | Immunostimulatory nucleic acids |
US20080292652A1 (en) * | 2004-09-21 | 2008-11-27 | Cytos Biotechnology Ag | Virus-Like Particles Comprising a Fusion Protein of the Coat Protein of Ap205 and an Antigenic Polypeptide |
Family Cites Families (97)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2034118A1 (en) | 1970-07-09 | 1972-01-13 | Seinfeld, Hugo, Brendel, Walter, Prof Dr . 8000 München | Xenogenic nucleic acids for enhancing antigenicity - of peptides and proteins |
US4722840A (en) | 1984-09-12 | 1988-02-02 | Chiron Corporation | Hybrid particle immunogens |
FR2581394B1 (en) | 1985-05-02 | 1988-08-05 | Grp Genie Genetique | PARTICLES HAVING IMMUNOGENIC PROPERTIES OF THE HBS ANTIGEN AND CARRYING A FOREIGN ANTIGENIC SITE TO THE EPITOPES CARRIED BY THE HBS ANTIGEN, ANIMAL VECTORS AND CELLS FOR THE PRODUCTION OF SUCH PARTICLES AND COMPOSITIONS CONTAINING SUCH PARTICLES FOR THE PRODUCTION |
US5374426A (en) | 1986-09-03 | 1994-12-20 | University Of Saskatchewan | Rotavirus nucleocapsid protein VP6 in vaccine compositions |
US4918166A (en) | 1987-04-10 | 1990-04-17 | Oxford Gene Systems Limited | Particulate hybrid HIV antigens |
GB8913737D0 (en) | 1989-06-15 | 1989-08-02 | Univ Birmingham | A novel anti-allergy treatment |
NZ235315A (en) | 1989-09-19 | 1991-09-25 | Wellcome Found | Chimaeric hepadnavirus core antigen proteins and their construction |
JP3068180B2 (en) | 1990-01-12 | 2000-07-24 | アブジェニックス インコーポレイテッド | Generation of heterologous antibodies |
US5334394A (en) | 1990-06-22 | 1994-08-02 | The Regents Of The University Of California | Human immunodeficiency virus decoy |
EP0468520A3 (en) | 1990-07-27 | 1992-07-01 | Mitsui Toatsu Chemicals, Inc. | Immunostimulatory remedies containing palindromic dna sequences |
WO1992011291A1 (en) | 1990-12-20 | 1992-07-09 | Smithkline Beecham Biologicals (S.A.) | Vaccines based on hepatitis b surface antigen |
GB9101550D0 (en) | 1991-01-24 | 1991-03-06 | Mastico Robert A | Antigen-presenting chimaeric protein |
ATE162198T1 (en) | 1992-07-27 | 1998-01-15 | Hybridon Inc | OLIGONUCLEOTIDE ALKYLPHOSPHONOTHIATE |
FR2695563B1 (en) | 1992-09-11 | 1994-12-02 | Pasteur Institut | Microparticles carrying antigens and their use for the induction of humoral or cellular responses. |
EP0732936B1 (en) | 1993-12-09 | 2000-03-29 | Heinrich Exner | Adjuvant for antigens, process for producing the same and its use |
WO1995026204A1 (en) | 1994-03-25 | 1995-10-05 | Isis Pharmaceuticals, Inc. | Immune stimulation by phosphorothioate oligonucleotide analogs |
FR2722506B1 (en) | 1994-07-13 | 1996-08-14 | Rhone Poulenc Rorer Sa | COMPOSITION CONTAINING NUCLEIC ACIDS, PREPARATION AND USES |
US20030050263A1 (en) | 1994-07-15 | 2003-03-13 | The University Of Iowa Research Foundation | Methods and products for treating HIV infection |
US20030026782A1 (en) | 1995-02-07 | 2003-02-06 | Arthur M. Krieg | Immunomodulatory oligonucleotides |
CN1185811A (en) | 1995-03-31 | 1998-06-24 | H·沃尔夫 | Antigen presentation system on retrovirus-like particles |
US5994315A (en) | 1995-06-07 | 1999-11-30 | East Carolina University | Low adenosine agent, composition, kit and method for treatment of airway disease |
US5780448A (en) | 1995-11-07 | 1998-07-14 | Ottawa Civic Hospital Loeb Research | DNA-based vaccination of fish |
ZA9756B (en) | 1996-01-16 | 1997-07-17 | Warner Lambert Co | Process for preparing 4,6-disubstituted pyrido[3,4-d]-pyrimidines |
PT879056E (en) | 1996-01-23 | 2002-10-31 | Ribapharm Inc | MODIFICATION OF TH1 / TH2 CYTOKINES EXPRESSION THROUGH RIBAVIRIN IN T ACTIVATED LYMPHOCYTES |
DE69739515D1 (en) | 1996-01-30 | 2009-09-10 | Univ California | EXPRESSION VECTORS INDUCING AN ANTIGEN-SPECIFIC IMMUNE RESPONSE AND METHODS FOR THEIR USE. |
GB9621091D0 (en) | 1996-10-09 | 1996-11-27 | Fondation Pour Le Perfectionem | Attenuated microorganisms strains and their uses |
ES2241042T3 (en) | 1996-10-11 | 2005-10-16 | The Regents Of The University Of California | IMMUNO STIMULATOR POLINUCLEOTIDE CONJUGATES / IMMUNOMODULATOR MOLECULA. |
EP0855184A1 (en) | 1997-01-23 | 1998-07-29 | Grayson B. Dr. Lipford | Pharmaceutical composition comprising a polynucleotide and an antigen especially for vaccination |
GB9702021D0 (en) | 1997-01-31 | 1997-03-19 | Imperial College | Medicaments |
CA2281838A1 (en) | 1997-02-28 | 1998-09-03 | University Of Iowa Research Foundation | Use of nucleic acids containing unmethylated cpg dinucleotide in the treatment of lps-associated disorders |
AU753688B2 (en) | 1997-03-10 | 2002-10-24 | Ottawa Civic Loeb Research Institute | Use of nucleic acids containing unmethylated CpG dinucleotide as an adjuvant |
AU7350798A (en) | 1997-04-29 | 1998-11-24 | Universiteit Utrecht | Corona virus-like particles as tools for vaccination and therapy |
WO1998050071A1 (en) * | 1997-05-01 | 1998-11-12 | Chiron Corporation | Use of virus-like particles as adjuvants |
PT1003850E (en) | 1997-06-06 | 2009-08-13 | Dynavax Tech Corp | Inhibitors of dna immunostimulatory sequence activity |
WO1999007839A2 (en) | 1997-08-05 | 1999-02-18 | Vlaams Interuniversitair Instituut Voor Biotechnologie | Immunoprotective influenza antigen and its use in vaccination |
US6169175B1 (en) | 1997-08-06 | 2001-01-02 | Centers For Disease Control And Prevention | Preparation and use of recombinant influenza A virus M2 construct vaccines |
DK1009413T3 (en) | 1997-09-05 | 2007-06-11 | Univ California | Use of immunostimulatory oligonucleotides for the prevention or treatment of asthma |
US5989868A (en) | 1997-09-12 | 1999-11-23 | The Board Of Regents Of The University Of Oklahoma | Fusion protein systems designed to increase soluble cytoplasmic expression of heterologous proteins in esherichia coli |
US6171591B1 (en) * | 1997-12-08 | 2001-01-09 | Pentamer Pharmaceuticals, Inc. | Recombinant nodavirus compositions and methods |
ID26669A (en) | 1998-02-12 | 2001-01-25 | Immune Complex Corp | INTI HEPATITIS B PROTEINS MODIFIED BY STRATEGY AND ITS DECREASES |
CA2323929C (en) | 1998-04-03 | 2004-03-09 | University Of Iowa Research Foundation | Methods and products for stimulating the immune system using immunotherapeutic oligonucleotides and cytokines |
US5990085A (en) | 1998-05-04 | 1999-11-23 | Michigan State University | Inhibin-HBc fusion protein |
ATE355266T1 (en) | 1998-06-30 | 2006-03-15 | Om Pharma | NEW ACYLATED PSEUDODIPEPTIDES, METHOD FOR THE PRODUCTION THEREOF, AND PHARMACEUTICAL COMPOSITIONS CONTAINING SAME |
JP2002521489A (en) | 1998-07-27 | 2002-07-16 | ユニバーシティ オブ アイオワ リサーチ ファウンデーション | Stereoisomers of CpG oligonucleotides and related methods |
AU5254799A (en) | 1998-08-04 | 2000-02-28 | Dryken Technologies, Inc. | Method and system for dynamic data-mining and on-line communication of customized information |
WO2000009159A1 (en) | 1998-08-10 | 2000-02-24 | Aquila Biopharmaceuticals, Inc. | Compositions of cpg and saponin adjuvants and methods thereof |
US6927278B1 (en) * | 1998-09-01 | 2005-08-09 | Trustees Of The University Of Pennsylvania | Peptide scaffolds for transfer of molecules into eukaryotic cells |
EP1108017A2 (en) | 1998-09-03 | 2001-06-20 | Coley Pharmaceutical GmbH | G-motif oligonucleotides and uses thereof |
CN100534529C (en) * | 1998-11-30 | 2009-09-02 | 希托斯生物技术股份公司 | Ordered molecular presentation of antigens, method of preparation and use |
US6551820B1 (en) | 1998-12-23 | 2003-04-22 | Boyce Thompson Institute For Plant Research | Expression of immunogenic hepatitis B surface antigens in transgenic plants |
JP2003523721A (en) | 1998-12-31 | 2003-08-12 | カイロン コーポレイション | Polynucleotides encoding antigenic HIVC-type polypeptides, polypeptides, and uses thereof |
AU2977500A (en) * | 1999-02-02 | 2000-08-25 | Biocache Pharmaceuticals, Llc | Advanced antigen presentation platform |
JP2002535994A (en) | 1999-02-03 | 2002-10-29 | ザ チルドレンズ メディカル センター コーポレイション | Gene repair by in vivo removal of target DNA |
AU3281100A (en) | 1999-02-25 | 2000-09-14 | Peptide Therapeutics Limited | Epitopes or mimotopes derived from the c-epsilon-3 or c-epsilon-4 domains of ige, antagonists thereof, and their therapeutic uses |
US8206749B1 (en) * | 1999-02-26 | 2012-06-26 | Novartis Vaccines And Diagnostics, Inc. | Microemulsions with adsorbed macromolecules and microparticles |
WO2000054803A2 (en) | 1999-03-16 | 2000-09-21 | Panacea Pharmaceuticals, Llc | Immunostimulatory nucleic acids and antigens |
PT1187629E (en) | 1999-04-19 | 2005-02-28 | Glaxosmithkline Biolog Sa | ADJUVANT COMPOSITION THAT UNDERSTANDS SAPONIN AND AN IMMUNOSTIMULATOR OLIGONUCLEOTIDE |
ES2250151T3 (en) | 1999-06-29 | 2006-04-16 | Glaxosmithkline Biologicals S.A. | USE OF CPG AS A VACCINE ASSISTANT AGAINST HIV. |
CA2380947C (en) | 1999-08-19 | 2011-11-01 | Dynavax Technologies Corporation | Methods of modulating an immune response using immunostimulatory sequences and compositions for use therein |
WO2001016320A1 (en) | 1999-08-30 | 2001-03-08 | Ludwig Institute For Cancer Research | Isolated nona and decapeptides which bind to hla molecules, and the use thereof |
JP2001151698A (en) * | 1999-09-10 | 2001-06-05 | Nichiko Pharmaceutical Co Ltd | Influenza vaccine |
EP1220684B2 (en) | 1999-09-27 | 2010-07-14 | Coley Pharmaceutical Group, Inc. | Methods related to immunostimulatory nucleic acid-induced interferon |
US6534064B1 (en) * | 1999-10-13 | 2003-03-18 | Chiron Corporation | Stabilized protein particles for inducing cellular immune responses |
US7223398B1 (en) | 1999-11-15 | 2007-05-29 | Dynavax Technologies Corporation | Immunomodulatory compositions containing an immunostimulatory sequence linked to antigen and methods of use thereof |
WO2001038358A2 (en) * | 1999-11-24 | 2001-05-31 | Chiron Corporation | Hbv/hcv virus-like particle |
JP2003527352A (en) | 2000-01-13 | 2003-09-16 | アンティジェニクス インコーポレーテッド | Innate immune stimulating compounds of CPG and saponin and methods thereof |
US6261326B1 (en) | 2000-01-13 | 2001-07-17 | North Carolina State University | Method for introducing dyes and other chemicals into a textile treatment system |
AT409085B (en) * | 2000-01-28 | 2002-05-27 | Cistem Biotechnologies Gmbh | PHARMACEUTICAL COMPOSITION FOR IMMUNULATING AND PRODUCING VACCINES |
AU3662101A (en) | 2000-02-01 | 2001-08-14 | Tanox Inc | Cd40-binding apc-activating molecules |
US6756044B1 (en) | 2000-02-09 | 2004-06-29 | Genvec, Inc. | Antigenic complexes and methods |
WO2001062275A1 (en) * | 2000-02-24 | 2001-08-30 | The Board Of Trustees Of The Leland Stanford Junior University | Adjuvant treatment by in vivo activation of dendritic cells |
EP1268530B1 (en) | 2000-04-07 | 2006-08-16 | University Of Leeds | Hepatitis b core antigen fusion proteins |
AU2001252458A1 (en) | 2000-05-05 | 2001-11-20 | Martin Bachmann | Molecular antigen arrays and vaccines |
ES2260235T3 (en) | 2000-06-22 | 2006-11-01 | Ucb Pharma Limited | MODIFICATION OF THE "CORE" ANTIGEN OF HEPATITIS B. |
AUPQ912000A0 (en) | 2000-07-31 | 2000-08-24 | Crown In The Right Of The Queensland Department Of Health, The | Improved virus like particles |
US20030138769A1 (en) | 2000-08-16 | 2003-07-24 | Birkett Ashley J. | Immunogenic HBc chimer particles having enhanced stability |
CN1468089B (en) | 2000-09-28 | 2011-09-21 | 诺华疫苗和诊断公司 | Microparticles for delivery of the heterologous nucleic acids |
NZ525320A (en) | 2000-10-18 | 2004-10-29 | Glaxosmithkline Biolog S | Combinations of immunostimulatory oligonucleotides (CpG), saponin and optionally lipopolysaccharides as potent vaccine adjuvants |
AU2002248185A1 (en) | 2000-12-14 | 2002-07-16 | Coley Pharmaceutical Group, Inc. | Inhibition of angiogenesis by nucleic acids |
US7320793B2 (en) | 2001-01-19 | 2008-01-22 | Cytos Biotechnology Ag | Molecular antigen array |
WO2003040308A2 (en) | 2001-07-27 | 2003-05-15 | The Government Of The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services | Use of sterically stabilized cationic liposomes to efficiently deliver cpg oligonucleotides in vivo |
EP1425423B1 (en) | 2001-08-13 | 2010-06-23 | University of Rochester | Transcutaneous immunization against papillomavirus with papillomavirus virus-like particles |
DE60234375D1 (en) | 2001-09-14 | 2009-12-24 | Cytos Biotechnology Ag | PACKAGING IMMUNSTIMULATING CpG IN VIRUS LIKE PARTICLES: PREPARATION METHOD AND USE |
JP4671389B2 (en) | 2001-10-05 | 2011-04-13 | サイトス バイオテクノロジー アーゲー | Angiotensin peptide-carrier complex and use thereof |
EP1455593B1 (en) | 2001-10-06 | 2013-07-24 | Merial Limited | Methods and compositions for promoting growth and innate immunity in young animals |
AU2002342891B2 (en) | 2001-11-07 | 2007-12-13 | Cytos Biotechnology Ag | Antigen arrays comprising RANKL for treatment of bone disease |
DK1443960T3 (en) | 2001-11-07 | 2009-03-23 | Cytos Biotechnology Ag | Antigen arrays denoting IL-5, IL-13 or eotaxin for the treatment of allergic eosinophilic diseases |
TW200303759A (en) | 2001-11-27 | 2003-09-16 | Schering Corp | Methods for treating cancer |
JP3881985B2 (en) | 2001-12-04 | 2007-02-14 | 株式会社アトック | Quartz glass fluid single-hole nozzle and quartz glass fluid multi-hole burner head |
AU2003205623A1 (en) | 2002-01-18 | 2003-07-30 | Cytos Biotechnology Ag | Prion protein carrier-conjugates |
MXPA05000277A (en) | 2002-07-17 | 2005-03-31 | Cytos Biotechnology Ag | Molecular antigen arrays using a virus like particle derived from the ap205 coat protein. |
WO2004016282A1 (en) | 2002-07-19 | 2004-02-26 | Cytos Biotechnology Ag | Vaccine compositions containing amyloid beta1-6 antigen arrays |
CA2588274A1 (en) | 2004-10-05 | 2006-04-13 | Cytos Biotechnology Ag | Vlp-antigen conjugates and their uses as vaccines |
US7767212B2 (en) | 2005-03-18 | 2010-08-03 | Cytos Biotechnology Ag | CAT allergen conjugates and uses thereof |
KR20080047564A (en) | 2005-09-28 | 2008-05-29 | 사이토스 바이오테크놀로지 아게 | Interleukin-1 conjugates and uses thereof |
CA2710141A1 (en) | 2007-12-20 | 2009-07-02 | Cytos Biotechnology Ag | Ngf conjugates and uses thereof |
AU2009240011A1 (en) | 2008-04-22 | 2009-10-29 | Cytos Biotechnology Ag | Vaccine compositions for the treatment of dengue fever and uses thereof |
-
2002
- 2002-09-16 DE DE60234375T patent/DE60234375D1/en not_active Expired - Lifetime
- 2002-09-16 AU AU2002339224A patent/AU2002339224B2/en not_active Expired
- 2002-09-16 ES ES02777600T patent/ES2335979T3/en not_active Expired - Lifetime
- 2002-09-16 JP JP2003528575A patent/JP4516748B2/en not_active Expired - Lifetime
- 2002-09-16 AT AT02777600T patent/ATE447967T1/en active
- 2002-09-16 US US10/244,065 patent/US20030099668A1/en not_active Abandoned
- 2002-09-16 CA CA2492826A patent/CA2492826C/en not_active Expired - Lifetime
- 2002-09-16 EP EP02777600A patent/EP1450856B1/en not_active Expired - Lifetime
- 2002-09-16 DK DK02777600.4T patent/DK1450856T3/en active
- 2002-09-16 WO PCT/IB2002/004132 patent/WO2003024481A2/en active Search and Examination
- 2002-09-16 CN CN028179358A patent/CN1599623B/en not_active Expired - Lifetime
- 2002-09-16 EP EP09014047A patent/EP2196217A1/en not_active Withdrawn
-
2004
- 2004-12-23 HK HK04110189.6A patent/HK1067058A1/en not_active IP Right Cessation
-
2009
- 2009-01-09 AU AU2009200115A patent/AU2009200115B2/en not_active Expired
- 2009-04-06 JP JP2009091943A patent/JP4749475B2/en not_active Expired - Lifetime
-
2010
- 2010-02-04 CY CY20101100114T patent/CY1110585T1/en unknown
-
2011
- 2011-11-10 US US13/294,006 patent/US8691209B2/en not_active Expired - Lifetime
-
2014
- 2014-01-23 US US14/162,600 patent/US9950055B2/en not_active Expired - Lifetime
Patent Citations (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5057540A (en) * | 1987-05-29 | 1991-10-15 | Cambridge Biotech Corporation | Saponin adjuvant |
US5698424A (en) * | 1991-06-28 | 1997-12-16 | British Technology Group Ltd. | Capsid forming and cystein modified chimaeric MS2-coat protein |
US6159728A (en) * | 1992-06-26 | 2000-12-12 | Btg International Limited | RNA bacteriophage-based delivery system |
US6727230B1 (en) * | 1994-03-25 | 2004-04-27 | Coley Pharmaceutical Group, Inc. | Immune stimulation by phosphorothioate oligonucleotide analogs |
US6429199B1 (en) * | 1994-07-15 | 2002-08-06 | University Of Iowa Research Foundation | Immunostimulatory nucleic acid molecules for activating dendritic cells |
US6194388B1 (en) * | 1994-07-15 | 2001-02-27 | The University Of Iowa Research Foundation | Immunomodulatory oligonucleotides |
US6207646B1 (en) * | 1994-07-15 | 2001-03-27 | University Of Iowa Research Foundation | Immunostimulatory nucleic acid molecules |
US6239116B1 (en) * | 1994-07-15 | 2001-05-29 | University Of Iowa Research Foundation | Immunostimulatory nucleic acid molecules |
US6653292B1 (en) * | 1994-07-15 | 2003-11-25 | University Of Iowa Research Foundation | Method of treating cancer using immunostimulatory oligonucleotides |
US5935821A (en) * | 1995-01-17 | 1999-08-10 | Board Of Trustees Of The University Of Kentucky | Polynucleotides related to monoclonal antibody 1A7 and use for the treatment of melanoma and small cell carcinoma |
US20030224010A1 (en) * | 1997-03-10 | 2003-12-04 | Coley Pharmaceutical Gmbh | Use of nucleic acids containing unmethylated CpG dinucleotide as an adjuvant |
US20030091599A1 (en) * | 1997-03-10 | 2003-05-15 | Coley Pharmaceutical Gmbh | Use of nucleic acids containing unmethylated CpG dinucleotide as an adjuvant |
US20050043529A1 (en) * | 1997-03-10 | 2005-02-24 | Coley Pharmaceutical Gmbh | Use of nucleic acids containing unmethylated CpG dinucleotide as an adjuvant |
US6406705B1 (en) * | 1997-03-10 | 2002-06-18 | University Of Iowa Research Foundation | Use of nucleic acids containing unmethylated CpG dinucleotide as an adjuvant |
US6339068B1 (en) * | 1997-05-20 | 2002-01-15 | University Of Iowa Research Foundation | Vectors and methods for immunization or therapeutic protocols |
US6326200B1 (en) * | 1997-06-23 | 2001-12-04 | Ludwig Institute For Cancer Research | Isolated nona-and decapeptides which bind to HLA molecules, and the use thereof |
US6541438B1 (en) * | 1998-05-01 | 2003-04-01 | The Procter & Gamble Company | Laundry detergent and/or fabric care compositions comprising a modified cellulase |
US20040234512A1 (en) * | 1998-05-14 | 2004-11-25 | Coley Pharmaceutical Gmbh | Methods for regualting hematopoiesis using CpG-oligonucleotides |
US20040030118A1 (en) * | 1998-05-14 | 2004-02-12 | Hermann Wagner | Methods for regulating hematopoiesis using CpG-oligonucleotides |
US20040235778A1 (en) * | 1998-05-14 | 2004-11-25 | Coley Pharmaceutical Gmbh | Methods for regulating hematopoiesis using CpG-oligonucleotides |
US20040235777A1 (en) * | 1998-05-14 | 2004-11-25 | Coley Pharmaceutical Gmbh | Methods for regulating hematopoiesis using CpG-oligonucleotides |
US5962636A (en) * | 1998-08-12 | 1999-10-05 | Amgen Canada Inc. | Peptides capable of modulating inflammatory heart disease |
US20020081295A1 (en) * | 1998-10-21 | 2002-06-27 | Schiller John T. | Virus-like particles for the induction of autoantibodies |
US6719978B2 (en) * | 1998-10-21 | 2004-04-13 | The United States Of America As Represented By The Department Of Health And Human Services | Virus-like particles for the induction of autoantibodies |
US20030060440A1 (en) * | 1999-04-12 | 2003-03-27 | Dennis Klinman | Oligodeoxynucleotide and its use to induce an immune response |
US7271156B2 (en) * | 1999-09-25 | 2007-09-18 | University Of Iowa Research Foundation | Immunostimulatory nucleic acids |
US6949520B1 (en) * | 1999-09-27 | 2005-09-27 | Coley Pharmaceutical Group, Inc. | Methods related to immunostimulatory nucleic acid-induced interferon |
US20010044416A1 (en) * | 2000-01-20 | 2001-11-22 | Mccluskie Michael J. | Immunostimulatory nucleic acids for inducing a Th2 immune response |
US20030087848A1 (en) * | 2000-02-03 | 2003-05-08 | Bratzler Robert L. | Immunostimulatory nucleic acids for the treatment of asthma and allergy |
US7094409B2 (en) * | 2001-01-19 | 2006-08-22 | Cytos Biotechnology Ag | Antigen arrays for treatment of allergic eosinophilic diseases |
US7128911B2 (en) * | 2001-01-19 | 2006-10-31 | Cytos Biotechnology Ag | Antigen arrays for treatment of bone disease |
US20030050268A1 (en) * | 2001-03-29 | 2003-03-13 | Krieg Arthur M. | Immunostimulatory nucleic acid for treatment of non-allergic inflammatory diseases |
US20030091593A1 (en) * | 2001-09-14 | 2003-05-15 | Cytos Biotechnology Ag | In vivo activation of antigen presenting cells for enhancement of immune responses induced by virus like particles |
US7115266B2 (en) * | 2001-10-05 | 2006-10-03 | Cytos Biotechnology Ag | Angiotensin peptide-carrier conjugates and uses thereof |
US20030219459A1 (en) * | 2002-01-18 | 2003-11-27 | Cytos Biotechnology Ag | Prion protein carrier-conjugates |
US20040005338A1 (en) * | 2002-06-20 | 2004-01-08 | Cytos Biotechnology Ag | Packaged virus-like particles for use as adjuvants: method of preparation and use |
US20060204475A1 (en) * | 2003-03-26 | 2006-09-14 | Cytos Biotechnology Ag | Melan-a peptide analogue-virus-like-particle conjugates |
US20060251677A1 (en) * | 2003-03-26 | 2006-11-09 | Cytos Biotechnology Ag | Packaging of immunostimulatory oligonucleotides into virus-like particles: method of preparation and use |
US20060210588A1 (en) * | 2003-03-26 | 2006-09-21 | Cytos Biotechnology Ag | Hiv-peptide-carrier-conjugates |
US7517520B2 (en) * | 2003-03-26 | 2009-04-14 | Cytos Biotechnology Ag | Packaging of immunostimulatory oligonucleotides into virus-like particles: method of preparation and use |
US7537767B2 (en) * | 2003-03-26 | 2009-05-26 | Cytis Biotechnology Ag | Melan-A- carrier conjugates |
US20060251623A1 (en) * | 2003-07-10 | 2006-11-09 | Caytos Biotechnology Ag | Packaged virus-like particles |
US20080292652A1 (en) * | 2004-09-21 | 2008-11-27 | Cytos Biotechnology Ag | Virus-Like Particles Comprising a Fusion Protein of the Coat Protein of Ap205 and an Antigenic Polypeptide |
US20070184068A1 (en) * | 2005-12-14 | 2007-08-09 | Cytos Biotechnology Ag | Immunostimulatory nucleic acid packaged particles for the treatment of hypersensitivity |
Cited By (140)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6942865B2 (en) * | 1989-11-08 | 2005-09-13 | Baylor College Of Medicine | Methods and reagents to detect and characterize norwalk and related viruses |
US20030129588A1 (en) * | 1989-11-08 | 2003-07-10 | Baylor College Of Medicine | Methods and reagents to detect and characterize norwalk and related viruses |
US20030232055A1 (en) * | 2000-07-31 | 2003-12-18 | Ruslan Medzhitov | Innate immune system-directed vaccines |
US20080226667A1 (en) * | 2000-07-31 | 2008-09-18 | Ruslan Medzhitov | Innate immune system-directed vaccines |
US20070122421A1 (en) * | 2000-07-31 | 2007-05-31 | Ruslan Medzhitov | Innate immune system-directed vaccines |
US20070160623A1 (en) * | 2001-01-03 | 2007-07-12 | Medzhitov Ruslan M | Innate immune system-directed vaccines |
US20030175287A1 (en) * | 2001-01-03 | 2003-09-18 | Yale University | Innate immune system-directed vaccines |
US20080274131A1 (en) * | 2001-01-19 | 2008-11-06 | Cytos Biotechnology Ag | Molecular antigen arrary |
US8691209B2 (en) | 2001-09-14 | 2014-04-08 | Cytos Biotechnology Ag | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use |
US20030091593A1 (en) * | 2001-09-14 | 2003-05-15 | Cytos Biotechnology Ag | In vivo activation of antigen presenting cells for enhancement of immune responses induced by virus like particles |
US9950055B2 (en) | 2001-09-14 | 2018-04-24 | Kuros Biosciences Ag | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use |
US20050266023A1 (en) * | 2001-11-07 | 2005-12-01 | Sina Bavari | Generation of virus-like particles and use as panfilovirus vaccine |
US7682618B2 (en) * | 2001-11-07 | 2010-03-23 | The United States Of America As Represented By The Secretary Of The Army | Generation of virus-like particles and use as panfilovirus vaccine |
US20030180755A1 (en) * | 2001-11-19 | 2003-09-25 | Robin Hwang | Pharmaceutical compositions in particulate form |
US20070190158A1 (en) * | 2001-11-19 | 2007-08-16 | Becton Dickinson And Company | Pharmaceutical compositions in particulate form |
US20030186271A1 (en) * | 2001-11-19 | 2003-10-02 | Robin Hwang | Pharmaceutical compositions in particulate form |
US7842310B2 (en) | 2001-11-19 | 2010-11-30 | Becton, Dickinson And Company | Pharmaceutical compositions in particulate form |
WO2003103605A3 (en) * | 2002-06-07 | 2005-03-31 | Large Scale Biology Corp | Flexible vaccine assembly and vaccine delivery platform |
US7939318B2 (en) | 2002-06-07 | 2011-05-10 | Kentucky Bioprocessing, Llc | Flexible vaccine assembly and vaccine delivery platform |
US20110070267A1 (en) * | 2002-06-20 | 2011-03-24 | Bachmann Martin F | Packaged virus-like particles for use as adjuvants: method of preparation and use |
US20060121468A1 (en) * | 2002-06-26 | 2006-06-08 | Allnutt F C T | Viruses and virus-like particles for multiple antigen and target display |
US20090246215A1 (en) * | 2002-07-19 | 2009-10-01 | Cytos Biotechnology Ag | Amyloid beta1-6 antigen arrays |
WO2004032622A3 (en) * | 2002-09-03 | 2005-04-28 | Large Scale Biology Corp | Production of peptides in plants as viral coat protein fusions |
US20060210588A1 (en) * | 2003-03-26 | 2006-09-21 | Cytos Biotechnology Ag | Hiv-peptide-carrier-conjugates |
US7537767B2 (en) * | 2003-03-26 | 2009-05-26 | Cytis Biotechnology Ag | Melan-A- carrier conjugates |
US20060251677A1 (en) * | 2003-03-26 | 2006-11-09 | Cytos Biotechnology Ag | Packaging of immunostimulatory oligonucleotides into virus-like particles: method of preparation and use |
US7517520B2 (en) | 2003-03-26 | 2009-04-14 | Cytos Biotechnology Ag | Packaging of immunostimulatory oligonucleotides into virus-like particles: method of preparation and use |
US20060204475A1 (en) * | 2003-03-26 | 2006-09-14 | Cytos Biotechnology Ag | Melan-a peptide analogue-virus-like-particle conjugates |
US20110097417A1 (en) * | 2003-03-26 | 2011-04-28 | Cytos Biotechnology Ag | Melan-a-carrier conjugates |
US20060251623A1 (en) * | 2003-07-10 | 2006-11-09 | Caytos Biotechnology Ag | Packaged virus-like particles |
US7320795B2 (en) | 2003-07-30 | 2008-01-22 | Vaccine Research Institute Of San Diego | Rodent hepatitis B virus core proteins as vaccine platforms and methods of use thereof |
US7883843B2 (en) | 2003-07-30 | 2011-02-08 | Vaccine Research Institute Of San Diego | Hepatitis virus core proteins as vaccine platforms and methods of use thereof |
US20110206724A1 (en) * | 2003-07-30 | 2011-08-25 | Vaccine Research Institute Of San Diego | Hepatitis virus core proteins as vaccine platforms and methods of use thereof |
US7811576B2 (en) | 2003-07-30 | 2010-10-12 | Vaccine Research Institute Of San Diego | Rodent hepatitis B virus core proteins as vaccine platforms and methods of use thereof |
US20080220009A1 (en) * | 2003-07-30 | 2008-09-11 | Vaccine Research Institute Of San Diego | Rodent hepatitis B virus core proteins as vaccine platforms and methods of thereof |
US20080138892A1 (en) * | 2003-07-30 | 2008-06-12 | Vaccine Research Institute Of San Diego | Hepadna virus core proteins as vaccine platforms and methods of use thereof |
US20050025782A1 (en) * | 2003-07-30 | 2005-02-03 | Vaccine Research Institute Of San Diego | Human hepatitis B virus core proteins as vaccine platforms and methods of use thereof |
US20050025781A1 (en) * | 2003-07-30 | 2005-02-03 | Vaccine Research Institute Of San Diego | Rodent hepatitis B virus core proteins as vaccine platforms and methods of use thereof |
US7144712B2 (en) | 2003-07-30 | 2006-12-05 | Vaccine Research Institute Of San Diego | Human hepatitis B virus core proteins as vaccine platforms and methods of use thereof |
US20050214321A1 (en) * | 2003-12-01 | 2005-09-29 | Dow Global Technologies Inc. | Recombinant icosahedral virus like particle production in pseudomonads |
US20070179101A1 (en) * | 2004-02-27 | 2007-08-02 | Harukazu Kitagawa | Immunostimulatory oligonucleotide that induces interferon alpha |
US7718623B2 (en) * | 2004-02-27 | 2010-05-18 | Emori & Co., Ltd. | Immunostimulatory oligonucleotide that induces interferon alpha |
US20060165723A1 (en) * | 2004-09-03 | 2006-07-27 | Consejo Superior De Investigaciones Cientificas | Nucleic acid sequences encoding proteins capable of associating into a virus-like particle |
US20080292652A1 (en) * | 2004-09-21 | 2008-11-27 | Cytos Biotechnology Ag | Virus-Like Particles Comprising a Fusion Protein of the Coat Protein of Ap205 and an Antigenic Polypeptide |
CN101052411B (en) * | 2004-10-05 | 2011-04-06 | 赛托斯生物技术公司 | VLP-antigen conjugates and their uses as vaccines |
AU2005291231B2 (en) * | 2004-10-05 | 2010-12-23 | Cytos Biotechnology Ag | VLP-antigen conjugates and their uses as vaccines |
WO2006037787A3 (en) * | 2004-10-05 | 2006-07-06 | Cytos Biotechnology Ag | Vlp-antigen conjugates and their uses as vaccines |
US7959928B2 (en) | 2004-10-05 | 2011-06-14 | Cytos Biotechnology Ag | VLP-antigen conjugates and their uses as vaccines |
US20080095738A1 (en) * | 2004-10-05 | 2008-04-24 | Cytos Biotechnology Ag | Vlp-Antigen Conjugates and Their Uses as Vaccines |
US9492400B2 (en) | 2004-11-04 | 2016-11-15 | Massachusetts Institute Of Technology | Coated controlled release polymer particles as efficient oral delivery vehicles for biopharmaceuticals |
WO2006063974A3 (en) * | 2004-12-13 | 2006-08-17 | Cytos Biotechnology Ag | Il-15 antigen arrays and uses thereof |
US20090123414A1 (en) * | 2004-12-13 | 2009-05-14 | Cytos Biotechnology Ag | Il-15 Antigen Arrays And Uses Thereof |
WO2006063974A2 (en) * | 2004-12-13 | 2006-06-22 | Cytos Biotechnology Ag | Il-15 antigen arrays and uses thereof |
US20090269371A1 (en) * | 2005-04-13 | 2009-10-29 | Aurelija Zvirbliene | Process for the production of monoclonal antibodies |
US7919314B2 (en) | 2005-04-13 | 2011-04-05 | Biotechnologijos Institutas | Process for the production of monoclonal antibodies |
US20080193474A1 (en) * | 2005-04-25 | 2008-08-14 | Griesgraber George W | Immunostimulatory Compositions |
US8574564B2 (en) | 2005-12-14 | 2013-11-05 | Cytos Biotechnology Ag | Immunostimulatory nucleic acid packaged particles for the treatment of hypersensitivity |
US9267937B2 (en) | 2005-12-15 | 2016-02-23 | Massachusetts Institute Of Technology | System for screening particles |
US20090298710A1 (en) * | 2005-12-15 | 2009-12-03 | Farokhzad Omid C | System for Screening Particles |
US20110117128A1 (en) * | 2006-03-07 | 2011-05-19 | Powell Thomas J | Compositions that Include Hemagglutinin, Methods of Making and Methods of Use Thereof |
US9056901B2 (en) | 2006-03-07 | 2015-06-16 | Vaxinnate Corporation | Methods of making hemagglutinin proteins |
US8945579B2 (en) | 2006-03-07 | 2015-02-03 | Vaxinnate Corporation | Methods of treatment with compositions that include hemagglutinin |
US9200042B2 (en) | 2006-03-07 | 2015-12-01 | Vaxinnate Corporation | Flagellin fusion proteins |
US8420102B2 (en) | 2006-03-07 | 2013-04-16 | Vaxinnate Corporation | Compositions that include hemagglutinin |
US20070253982A1 (en) * | 2006-03-07 | 2007-11-01 | Langzhou Song | Compositions that include hemagglutinin, methods of making and methods of use thereof |
US20070224205A1 (en) * | 2006-03-07 | 2007-09-27 | Powell Thomas J | Compositions that include hemagglutinin, methods of making and methods of use thereof |
US20100266491A1 (en) * | 2006-03-31 | 2010-10-21 | Massachusetts Institute Of Technology | System for targeted delivery of therapeutic agents |
US8802153B2 (en) | 2006-03-31 | 2014-08-12 | Massachusetts Institute Of Technology | System for targeted delivery of therapeutic agents |
US8709483B2 (en) | 2006-03-31 | 2014-04-29 | Massachusetts Institute Of Technology | System for targeted delivery of therapeutic agents |
US9688812B2 (en) | 2006-05-15 | 2017-06-27 | Massachusetts Institute Of Technology | Polymers for functional particles |
US9080014B2 (en) | 2006-05-15 | 2015-07-14 | Massachusetts Institute Of Technology | Polymers for functional particles |
US20110052697A1 (en) * | 2006-05-17 | 2011-03-03 | Gwangju Institute Of Science & Technology | Aptamer-Directed Drug Delivery |
US8541559B2 (en) | 2006-06-12 | 2013-09-24 | Cytos Biotechnology Ag | Process for producing aggregated oligonucleotides |
US9902972B2 (en) | 2006-06-12 | 2018-02-27 | Kuros Biosciences Ag | Processes for packaging oligonucleotides into virus-like particles of RNA bacteriophages |
US20100273237A1 (en) * | 2006-06-12 | 2010-10-28 | Cytos Biotechnology Ag | Processes for Packaging Oligonucleotides Into Virus-Like Particles of RNA Bacteriophages |
US9404126B2 (en) | 2006-06-12 | 2016-08-02 | Kuros Biosciences Ag | Processes for packaging aggregated oligonucleotides into virus-like particles of RNA bacteriophages |
US10358656B2 (en) | 2006-06-12 | 2019-07-23 | Kuros Biosciences Ag | Oligonucleotides packaged into virus-like particles of RNA bacteriophages |
US9381477B2 (en) | 2006-06-23 | 2016-07-05 | Massachusetts Institute Of Technology | Microfluidic synthesis of organic nanoparticles |
US20100022680A1 (en) * | 2006-06-23 | 2010-01-28 | Massachusetts Institute Of Technology | Microfluidic Synthesis of Organic Nanoparticles |
US20080139797A1 (en) * | 2006-12-12 | 2008-06-12 | Integrated Dna Technologies, Inc. | Oligonucleotides containing high concentrations of guanine monomers |
US8586728B2 (en) | 2006-12-12 | 2013-11-19 | Cytos Biotechnology Ag | Oligonucleotides containing high concentrations of guanine monomers |
US9914746B2 (en) | 2006-12-12 | 2018-03-13 | Kuros Biosciences Ag | Oligonucleotides containing high concentrations of guanine monomers |
US20100297233A1 (en) * | 2007-02-09 | 2010-11-25 | Massachusetts Institute Of Technology | Oscillating cell culture bioreactor |
US9217129B2 (en) | 2007-02-09 | 2015-12-22 | Massachusetts Institute Of Technology | Oscillating cell culture bioreactor |
US9333179B2 (en) | 2007-04-04 | 2016-05-10 | Massachusetts Institute Of Technology | Amphiphilic compound assisted nanoparticles for targeted delivery |
US20100203142A1 (en) * | 2007-04-04 | 2010-08-12 | Massachusetts Institute Of Technology | Amphiphilic compound assisted nanoparticles for targeted delivery |
US20090093019A1 (en) * | 2007-04-27 | 2009-04-09 | Phelps Jamie P | Production and in vivo assembly of soluble recombinant icosahedral virus-like particles |
US11547667B2 (en) | 2007-10-12 | 2023-01-10 | Massachusetts Institute Of Technology | Vaccine nanotechnology |
US10736848B2 (en) | 2007-10-12 | 2020-08-11 | Massachusetts Institute Of Technology | Vaccine nanotechnology |
US9474717B2 (en) | 2007-10-12 | 2016-10-25 | Massachusetts Institute Of Technology | Vaccine nanotechnology |
US9526702B2 (en) | 2007-10-12 | 2016-12-27 | Massachusetts Institute Of Technology | Vaccine nanotechnology |
US9539210B2 (en) | 2007-10-12 | 2017-01-10 | Massachusetts Institute Of Technology | Vaccine nanotechnology |
US20110014231A1 (en) * | 2007-11-05 | 2011-01-20 | Mor Research Applications Ltd | Anti-measles cancer immunotherapy |
US9205138B2 (en) | 2008-04-18 | 2015-12-08 | Vaxinnate Corporation | Deletion mutants of flagellin and methods of use |
US9211320B2 (en) | 2008-04-18 | 2015-12-15 | Vaxinnate Corporation | Deletion mutants of flagellin and methods of use |
US8932605B2 (en) | 2008-04-18 | 2015-01-13 | Vaxinnate Corporation | Deletion mutants of flagellin and methods of use |
US20110135680A1 (en) * | 2008-04-18 | 2011-06-09 | Langzhou Song | Deletion mutants of flagellin and methods of use |
US10238736B2 (en) | 2008-06-27 | 2019-03-26 | Zoetis Services Llc | Adjuvant compositions |
US9439859B2 (en) | 2008-10-12 | 2016-09-13 | Massachusetts Institute Of Technology | Adjuvant incorporation in immunoanotherapeutics |
US8562998B2 (en) | 2008-10-12 | 2013-10-22 | President And Fellows Of Harvard College | Targeting of antigen presenting cells with immunonanotherapeutics |
US8906381B2 (en) | 2008-10-12 | 2014-12-09 | Massachusetts Institute Of Technology | Immunonanotherapeutics that provide IGG humoral response without T-cell antigen |
US8637028B2 (en) | 2008-10-12 | 2014-01-28 | President And Fellows Of Harvard College | Adjuvant incorporation in immunonanotherapeutics |
US9308280B2 (en) | 2008-10-12 | 2016-04-12 | Massachusetts Institute Of Technology | Targeting of antigen presenting cells with immunonanotherapeutics |
US9233072B2 (en) | 2008-10-12 | 2016-01-12 | Massachusetts Institute Of Technology | Adjuvant incorporation in immunonanotherapeutics |
US8932595B2 (en) | 2008-10-12 | 2015-01-13 | Massachusetts Institute Of Technology | Nicotine immunonanotherapeutics |
US20120263743A1 (en) * | 2009-04-30 | 2012-10-18 | Cytos Biotechnology Ag | Influenza hemagglutinin compositions and uses thereof |
US9549901B2 (en) | 2010-09-03 | 2017-01-24 | The Brigham And Women's Hospital, Inc. | Lipid-polymer hybrid particles |
US20140023613A1 (en) * | 2011-02-11 | 2014-01-23 | The Trustees Of The University Of Pennsylvania | Nucleic Acid Molecule Encoding Hepatitis B Virus Core Protein And Vaccine Comprising The Same |
US20160317652A1 (en) * | 2011-02-11 | 2016-11-03 | The Trustees Of The University Of Pennsylvania | Nucleic Acid Molecule Encoding Hepatitis B Virus Core Protein And Vaccine Comprising The Same |
US9403879B2 (en) * | 2011-02-11 | 2016-08-02 | The Trustees Of The University Of Pennsylvania | Nucleic acid molecule encoding hepatitis B virus core protein and vaccine comprising the same |
US9675690B2 (en) | 2011-02-11 | 2017-06-13 | The Trustees Of The University Of Pennsylvania | Nucleic acid molecule encoding hepatitis B virus core protein and surface antigen protein and vaccine comprising the same |
EA037377B1 (en) * | 2011-02-11 | 2021-03-22 | Дзе Трастиз Оф Дзе Юниверсити Оф Пенсильвания | Vaccine for inducing an immune response against hbv |
US10695421B2 (en) * | 2011-02-11 | 2020-06-30 | The Trustees Of The University Of Pennsylvania | Nucleic acid molecule encoding hepatitis B virus core protein and vaccine comprising the same |
EA032364B1 (en) * | 2011-02-11 | 2019-05-31 | Дзе Трастиз Оф Дзе Юниверсити Оф Пенсильвания | Nucleic acid molecule encoding hepatitis b virus core protein and vaccine comprising the same |
US20190151443A1 (en) * | 2011-02-11 | 2019-05-23 | The Trustees Of The University Of Pennsylvania | Nucleic Acid Molecule Encoding Hepatitis B Virus Core Protein And Vaccine Comprising The Same |
WO2012109668A1 (en) * | 2011-02-11 | 2012-08-16 | The Trustees Of The University Of Pennsylvania | Nucleic acid molecule encoding hepatitis b virus core protein and vaccine comprising the same |
US9238679B2 (en) | 2011-02-11 | 2016-01-19 | The Trustees Of The University Of Pennslyvania | Nucleic acid molecule encoding hepatitis B virus core protein and surface antigen protein and vaccine comprising the same |
US10195268B2 (en) * | 2011-02-11 | 2019-02-05 | The Trustees Of The University Of Pennsylvania | Nucleic acid molecule encoding hepatitis B virus core protein and vaccine comprising the same |
AU2012214141B2 (en) * | 2011-02-11 | 2016-01-28 | The Trustees Of The University Of Pennsylvania | Nucleic acid molecule encoding hepatitis B virus core protein and vaccine comprising the same |
US20140154284A1 (en) * | 2011-07-18 | 2014-06-05 | The United States of America,as represented by the Secretary Department of Health & Human Services | Methods and compositions for inhibiting polyomavirus-associated pathology |
US9764022B2 (en) * | 2011-07-18 | 2017-09-19 | The United States Of America, As Represented By The Secretary, Department Of Health And Human Services | Methods and compositions for inhibiting polyomavirus-associated pathology |
WO2013096866A3 (en) * | 2011-12-21 | 2013-10-03 | Apse, Llc | Processes using vlps with capsids resistant to hydrolases |
EP4019636A1 (en) | 2011-12-21 | 2022-06-29 | Apse Llc | Processes using vlps with capsids resistant to hydrolases |
US9181531B2 (en) | 2011-12-21 | 2015-11-10 | Apse, Llc | Process for purifying VLPs |
US8932598B2 (en) | 2012-08-28 | 2015-01-13 | Vaxinnate Corporation | Fusion proteins and methods of use |
US9822361B2 (en) | 2013-06-19 | 2017-11-21 | Apse, Inc. | Compositions and methods using capsids resistant to hydrolases |
US11701415B2 (en) | 2013-09-19 | 2023-07-18 | Zoetis Services Llc | Oil-based adjuvants |
US10117921B2 (en) | 2013-09-19 | 2018-11-06 | Zoetis Services Llc | Oil-based adjuvants |
US10953080B2 (en) | 2013-09-19 | 2021-03-23 | Zoetis Services Llc | Oil-based adjuvants |
WO2016109310A1 (en) | 2014-12-31 | 2016-07-07 | Checkmate Pharmaceuticals, Llc | Combination tumor immunotherapy |
EP3835312A1 (en) | 2014-12-31 | 2021-06-16 | Checkmate Pharmaceuticals, Inc. | Combination tumor immunotherapy |
US10682365B2 (en) | 2014-12-31 | 2020-06-16 | Checkmate Pharmaceuticals, Inc. | Combination tumor immunotherapy |
US10478487B2 (en) | 2015-01-16 | 2019-11-19 | Zoetis Services Llc | Foot-and-mouth disease vaccine |
US20190046638A1 (en) * | 2016-04-01 | 2019-02-14 | Checkmate Pharmaceuticals, Inc. | Fc RECEPTOR-MEDIATED DRUG DELIVERY |
WO2017173334A1 (en) | 2016-04-01 | 2017-10-05 | Checkmate Pharmaceuticals, Inc. | Fc receptor-mediated drug delivery |
US10434171B2 (en) | 2016-12-23 | 2019-10-08 | United States of America as Represented by Secretary of Agriculture | Microfluidized Mycobacterium avium fragments as an adjuvant and carrier for mucosal vaccine delivery |
US11349419B2 (en) | 2017-01-27 | 2022-05-31 | Franklin Electric Co., Inc. | Motor drive system including removable bypass circuit and/or cooling features |
US11018610B2 (en) | 2017-01-27 | 2021-05-25 | Franklin Electric Co., Inc. | Motor drive system and method |
US12084655B2 (en) | 2018-04-09 | 2024-09-10 | Checkmate Pharmaceuticals | Packaging oligonucleotides into virus-like particles |
US20220111040A1 (en) * | 2018-08-07 | 2022-04-14 | Institute Of Biophyscis, Chinese Academy Of Sciences | Method for activating cd4+t cell |
Also Published As
Publication number | Publication date |
---|---|
EP1450856A2 (en) | 2004-09-01 |
US20150030620A1 (en) | 2015-01-29 |
AU2002339224B2 (en) | 2008-10-09 |
CN1599623A (en) | 2005-03-23 |
US20120301499A1 (en) | 2012-11-29 |
ATE447967T1 (en) | 2009-11-15 |
JP4516748B2 (en) | 2010-08-04 |
JP2005517632A (en) | 2005-06-16 |
EP1450856B1 (en) | 2009-11-11 |
AU2009200115B2 (en) | 2012-05-03 |
CN1599623B (en) | 2011-05-11 |
CY1110585T1 (en) | 2015-04-29 |
DK1450856T3 (en) | 2010-05-31 |
US9950055B2 (en) | 2018-04-24 |
US8691209B2 (en) | 2014-04-08 |
AU2009200115A1 (en) | 2009-02-05 |
WO2003024481A2 (en) | 2003-03-27 |
WO2003024481A3 (en) | 2004-06-03 |
JP4749475B2 (en) | 2011-08-17 |
DE60234375D1 (en) | 2009-12-24 |
ES2335979T3 (en) | 2010-04-07 |
EP2196217A1 (en) | 2010-06-16 |
CA2492826A1 (en) | 2003-03-27 |
CA2492826C (en) | 2016-12-13 |
JP2009197001A (en) | 2009-09-03 |
HK1067058A1 (en) | 2005-04-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20030099668A1 (en) | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use | |
US20030091593A1 (en) | In vivo activation of antigen presenting cells for enhancement of immune responses induced by virus like particles | |
US7517520B2 (en) | Packaging of immunostimulatory oligonucleotides into virus-like particles: method of preparation and use | |
CA2492930C (en) | Vaccine compositions containing amyloid beta1-6 antigen arrays | |
US20040076645A1 (en) | Ghrelin-carrier conjugates | |
AU2002339224A1 (en) | Packaging of immunostimulatory substances into virus-like particles: method of preparation and use | |
KR20060128924A (en) | Ghrelin-carrier conjugates |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CYTOS BIOTECHNOLOGY AG, SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BACHMANN, MARTIN F.;STORNI, TAZIO;MAURER, PATRIK;AND OTHERS;REEL/FRAME:013371/0718;SIGNING DATES FROM 20020913 TO 20021008 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |