CN105820250A - 一种抗basigin人源化抗体及其应用 - Google Patents
一种抗basigin人源化抗体及其应用 Download PDFInfo
- Publication number
- CN105820250A CN105820250A CN201610285139.4A CN201610285139A CN105820250A CN 105820250 A CN105820250 A CN 105820250A CN 201610285139 A CN201610285139 A CN 201610285139A CN 105820250 A CN105820250 A CN 105820250A
- Authority
- CN
- China
- Prior art keywords
- antibody
- basigin
- seq
- variable region
- humanized antibody
- 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.)
- Granted
Links
- 239000003814 drug Substances 0.000 claims abstract description 7
- 201000004792 malaria Diseases 0.000 claims abstract description 7
- 101000998953 Homo sapiens Immunoglobulin heavy variable 1-2 Proteins 0.000 claims abstract description 6
- 101001008255 Homo sapiens Immunoglobulin kappa variable 1D-8 Proteins 0.000 claims abstract description 6
- 101001047628 Homo sapiens Immunoglobulin kappa variable 2-29 Proteins 0.000 claims abstract description 6
- 101001008321 Homo sapiens Immunoglobulin kappa variable 2D-26 Proteins 0.000 claims abstract description 6
- 101001047619 Homo sapiens Immunoglobulin kappa variable 3-20 Proteins 0.000 claims abstract description 6
- 101001008263 Homo sapiens Immunoglobulin kappa variable 3D-15 Proteins 0.000 claims abstract description 6
- 102100036887 Immunoglobulin heavy variable 1-2 Human genes 0.000 claims abstract description 6
- 102100022949 Immunoglobulin kappa variable 2-29 Human genes 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 102000015279 Basigin Human genes 0.000 claims description 51
- 108010064528 Basigin Proteins 0.000 claims description 51
- 125000003275 alpha amino acid group Chemical group 0.000 claims description 24
- 206010009944 Colon cancer Diseases 0.000 claims description 5
- 206010058467 Lung neoplasm malignant Diseases 0.000 claims description 5
- 208000029742 colonic neoplasm Diseases 0.000 claims description 5
- 201000010099 disease Diseases 0.000 claims description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 5
- 229940079593 drug Drugs 0.000 abstract description 3
- 208000001333 Colorectal Neoplasms Diseases 0.000 abstract 1
- 208000014018 liver neoplasm Diseases 0.000 abstract 1
- 208000020816 lung neoplasm Diseases 0.000 abstract 1
- 239000012634 fragment Substances 0.000 description 58
- 108090000623 proteins and genes Proteins 0.000 description 33
- 210000004027 cell Anatomy 0.000 description 21
- 238000006243 chemical reaction Methods 0.000 description 19
- 108090000790 Enzymes Proteins 0.000 description 18
- 102000004190 Enzymes Human genes 0.000 description 17
- 229940088598 enzyme Drugs 0.000 description 17
- 230000009471 action Effects 0.000 description 14
- 230000014509 gene expression Effects 0.000 description 14
- 239000013604 expression vector Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 13
- 210000004881 tumor cell Anatomy 0.000 description 13
- 238000012216 screening Methods 0.000 description 11
- 239000000427 antigen Substances 0.000 description 10
- 108091007433 antigens Proteins 0.000 description 10
- 102000036639 antigens Human genes 0.000 description 10
- 206010028980 Neoplasm Diseases 0.000 description 9
- 241000223960 Plasmodium falciparum Species 0.000 description 9
- 238000000246 agarose gel electrophoresis Methods 0.000 description 9
- 239000013612 plasmid Substances 0.000 description 9
- 238000000746 purification Methods 0.000 description 9
- 239000006228 supernatant Substances 0.000 description 9
- 108020004414 DNA Proteins 0.000 description 8
- 241000699666 Mus <mouse, genus> Species 0.000 description 8
- 230000027455 binding Effects 0.000 description 8
- 210000003743 erythrocyte Anatomy 0.000 description 8
- 230000002068 genetic effect Effects 0.000 description 8
- 239000002773 nucleotide Substances 0.000 description 8
- 125000003729 nucleotide group Chemical group 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 235000001014 amino acid Nutrition 0.000 description 7
- 150000001413 amino acids Chemical class 0.000 description 7
- 239000000872 buffer Substances 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 108060003951 Immunoglobulin Proteins 0.000 description 6
- 230000003321 amplification Effects 0.000 description 6
- 239000001963 growth medium Substances 0.000 description 6
- 102000018358 immunoglobulin Human genes 0.000 description 6
- 235000018102 proteins Nutrition 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- 230000004544 DNA amplification Effects 0.000 description 5
- 241001529936 Murinae Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 210000004408 hybridoma Anatomy 0.000 description 5
- 238000011534 incubation Methods 0.000 description 5
- 102000004169 proteins and genes Human genes 0.000 description 5
- 238000012163 sequencing technique Methods 0.000 description 5
- NFGXHKASABOEEW-UHFFFAOYSA-N 1-methylethyl 11-methoxy-3,7,11-trimethyl-2,4-dodecadienoate Chemical compound COC(C)(C)CCCC(C)CC=CC(C)=CC(=O)OC(C)C NFGXHKASABOEEW-UHFFFAOYSA-N 0.000 description 4
- 238000002965 ELISA Methods 0.000 description 4
- 239000007853 buffer solution Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 4
- 238000010494 dissociation reaction Methods 0.000 description 4
- 230000005593 dissociations Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 210000002966 serum Anatomy 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 239000013598 vector Substances 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 241000588724 Escherichia coli Species 0.000 description 3
- 102000003960 Ligases Human genes 0.000 description 3
- 108090000364 Ligases Proteins 0.000 description 3
- 102100034068 Monocarboxylate transporter 1 Human genes 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000003430 antimalarial agent Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000004087 circulation Effects 0.000 description 3
- 239000002299 complementary DNA Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000029087 digestion Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 238000013467 fragmentation Methods 0.000 description 3
- 238000006062 fragmentation reaction Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 230000009545 invasion Effects 0.000 description 3
- 210000004962 mammalian cell Anatomy 0.000 description 3
- 230000004060 metabolic process Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 108091008146 restriction endonucleases Proteins 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 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 2
- OOIBFPKQHULHSQ-UHFFFAOYSA-N (3-hydroxy-1-adamantyl) 2-methylprop-2-enoate Chemical compound C1C(C2)CC3CC2(O)CC1(OC(=O)C(=C)C)C3 OOIBFPKQHULHSQ-UHFFFAOYSA-N 0.000 description 2
- 102100033400 4F2 cell-surface antigen heavy chain Human genes 0.000 description 2
- 102100026802 72 kDa type IV collagenase Human genes 0.000 description 2
- 101710151806 72 kDa type IV collagenase Proteins 0.000 description 2
- 206010002198 Anaphylactic reaction Diseases 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- 102000001493 Cyclophilins Human genes 0.000 description 2
- 108010068682 Cyclophilins Proteins 0.000 description 2
- 108010005054 Deoxyribonuclease BamHI Proteins 0.000 description 2
- 206010059866 Drug resistance Diseases 0.000 description 2
- 239000012743 FreeStyle Max reagent Substances 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 102000003886 Glycoproteins Human genes 0.000 description 2
- 108090000288 Glycoproteins Proteins 0.000 description 2
- 101000800023 Homo sapiens 4F2 cell-surface antigen heavy chain Proteins 0.000 description 2
- 108010001336 Horseradish Peroxidase Proteins 0.000 description 2
- 102000008394 Immunoglobulin Fragments Human genes 0.000 description 2
- 108010021625 Immunoglobulin Fragments Proteins 0.000 description 2
- 239000006142 Luria-Bertani Agar Substances 0.000 description 2
- 101710120903 Malignant T-cell-amplified sequence 1 Proteins 0.000 description 2
- 101710186853 Malignant T-cell-amplified sequence 1 homolog Proteins 0.000 description 2
- 102000002274 Matrix Metalloproteinases Human genes 0.000 description 2
- 108010000684 Matrix Metalloproteinases Proteins 0.000 description 2
- 102100025276 Monocarboxylate transporter 4 Human genes 0.000 description 2
- 102000017298 Monocarboxylate transporters Human genes 0.000 description 2
- 108050005244 Monocarboxylate transporters Proteins 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 238000012408 PCR amplification Methods 0.000 description 2
- 102000057297 Pepsin A Human genes 0.000 description 2
- 108090000284 Pepsin A Proteins 0.000 description 2
- 108091006601 SLC16A3 Proteins 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229960000723 ampicillin Drugs 0.000 description 2
- AVKUERGKIZMTKX-NJBDSQKTSA-N ampicillin Chemical compound C1([C@@H](N)C(=O)N[C@H]2[C@H]3SC([C@@H](N3C2=O)C(O)=O)(C)C)=CC=CC=C1 AVKUERGKIZMTKX-NJBDSQKTSA-N 0.000 description 2
- 208000003455 anaphylaxis Diseases 0.000 description 2
- 229940125644 antibody drug Drugs 0.000 description 2
- 230000006907 apoptotic process Effects 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 201000011510 cancer Diseases 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000010367 cloning Methods 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000012636 effector Substances 0.000 description 2
- 230000037149 energy metabolism Effects 0.000 description 2
- 238000011532 immunohistochemical staining Methods 0.000 description 2
- 230000003834 intracellular effect Effects 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 244000045947 parasite Species 0.000 description 2
- 238000002823 phage display Methods 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 108090000765 processed proteins & peptides Proteins 0.000 description 2
- 102000004196 processed proteins & peptides Human genes 0.000 description 2
- 238000004393 prognosis Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010839 reverse transcription Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000028327 secretion Effects 0.000 description 2
- 230000009870 specific binding Effects 0.000 description 2
- 230000010473 stable expression Effects 0.000 description 2
- UCSJYZPVAKXKNQ-HZYVHMACSA-N streptomycin Chemical compound CN[C@H]1[C@H](O)[C@@H](O)[C@H](CO)O[C@H]1O[C@@H]1[C@](C=O)(O)[C@H](C)O[C@H]1O[C@@H]1[C@@H](NC(N)=N)[C@H](O)[C@@H](NC(N)=N)[C@H](O)[C@H]1O UCSJYZPVAKXKNQ-HZYVHMACSA-N 0.000 description 2
- 238000001890 transfection Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 239000012224 working solution Substances 0.000 description 2
- WZUVPPKBWHMQCE-XJKSGUPXSA-N (+)-haematoxylin Chemical compound C12=CC(O)=C(O)C=C2C[C@]2(O)[C@H]1C1=CC=C(O)C(O)=C1OC2 WZUVPPKBWHMQCE-XJKSGUPXSA-N 0.000 description 1
- OJHZNMVJJKMFGX-RNWHKREASA-N (4r,4ar,7ar,12bs)-9-methoxy-3-methyl-1,2,4,4a,5,6,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinoline-7-one;2,3-dihydroxybutanedioic acid Chemical compound OC(=O)C(O)C(O)C(O)=O.O=C([C@@H]1O2)CC[C@H]3[C@]4([H])N(C)CC[C@]13C1=C2C(OC)=CC=C1C4 OJHZNMVJJKMFGX-RNWHKREASA-N 0.000 description 1
- 108091032973 (ribonucleotides)n+m Proteins 0.000 description 1
- 102000040650 (ribonucleotides)n+m Human genes 0.000 description 1
- PXFBZOLANLWPMH-UHFFFAOYSA-N 16-Epiaffinine Natural products C1C(C2=CC=CC=C2N2)=C2C(=O)CC2C(=CC)CN(C)C1C2CO PXFBZOLANLWPMH-UHFFFAOYSA-N 0.000 description 1
- NVKAWKQGWWIWPM-ABEVXSGRSA-N 17-β-hydroxy-5-α-Androstan-3-one Chemical compound C1C(=O)CC[C@]2(C)[C@H]3CC[C@](C)([C@H](CC4)O)[C@@H]4[C@@H]3CC[C@H]21 NVKAWKQGWWIWPM-ABEVXSGRSA-N 0.000 description 1
- VKUYLANQOAKALN-UHFFFAOYSA-N 2-[benzyl-(4-methoxyphenyl)sulfonylamino]-n-hydroxy-4-methylpentanamide Chemical compound C1=CC(OC)=CC=C1S(=O)(=O)N(C(CC(C)C)C(=O)NO)CC1=CC=CC=C1 VKUYLANQOAKALN-UHFFFAOYSA-N 0.000 description 1
- UAIUNKRWKOVEES-UHFFFAOYSA-N 3,3',5,5'-tetramethylbenzidine Chemical compound CC1=C(N)C(C)=CC(C=2C=C(C)C(N)=C(C)C=2)=C1 UAIUNKRWKOVEES-UHFFFAOYSA-N 0.000 description 1
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 1
- 101100230376 Acetivibrio thermocellus (strain ATCC 27405 / DSM 1237 / JCM 9322 / NBRC 103400 / NCIMB 10682 / NRRL B-4536 / VPI 7372) celI gene Proteins 0.000 description 1
- 108050008874 Annexin Proteins 0.000 description 1
- 102000000412 Annexin Human genes 0.000 description 1
- 108090001008 Avidin Proteins 0.000 description 1
- 206010006187 Breast cancer Diseases 0.000 description 1
- 208000026310 Breast neoplasm Diseases 0.000 description 1
- 102100032957 C5a anaphylatoxin chemotactic receptor 1 Human genes 0.000 description 1
- 101710098483 C5a anaphylatoxin chemotactic receptor 1 Proteins 0.000 description 1
- 101100111802 Caenorhabditis elegans best-26 gene Proteins 0.000 description 1
- 101100028791 Caenorhabditis elegans pbs-5 gene Proteins 0.000 description 1
- 208000017897 Carcinoma of esophagus Diseases 0.000 description 1
- 102000003727 Caveolin 1 Human genes 0.000 description 1
- 108090000026 Caveolin 1 Proteins 0.000 description 1
- 206010008342 Cervix carcinoma Diseases 0.000 description 1
- 241000699802 Cricetulus griseus Species 0.000 description 1
- 102000012410 DNA Ligases Human genes 0.000 description 1
- 108010061982 DNA Ligases Proteins 0.000 description 1
- 101100372758 Danio rerio vegfaa gene Proteins 0.000 description 1
- 102100024746 Dihydrofolate reductase Human genes 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 101000798427 Gallus gallus Basigin Proteins 0.000 description 1
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 description 1
- WZUVPPKBWHMQCE-UHFFFAOYSA-N Haematoxylin Natural products C12=CC(O)=C(O)C=C2CC2(O)C1C1=CC=C(O)C(O)=C1OC2 WZUVPPKBWHMQCE-UHFFFAOYSA-N 0.000 description 1
- 101000605020 Homo sapiens Large neutral amino acids transporter small subunit 1 Proteins 0.000 description 1
- ROHFNLRQFUQHCH-YFKPBYRVSA-N L-leucine Chemical compound CC(C)C[C@H](N)C(O)=O ROHFNLRQFUQHCH-YFKPBYRVSA-N 0.000 description 1
- ROHFNLRQFUQHCH-UHFFFAOYSA-N Leucine Natural products CC(C)CC(N)C(O)=O ROHFNLRQFUQHCH-UHFFFAOYSA-N 0.000 description 1
- -1 M6antigen Proteins 0.000 description 1
- 108700041567 MDR Genes Proteins 0.000 description 1
- 102000000380 Matrix Metalloproteinase 1 Human genes 0.000 description 1
- 108010016113 Matrix Metalloproteinase 1 Proteins 0.000 description 1
- 108010076557 Matrix Metalloproteinase 14 Proteins 0.000 description 1
- 102100030216 Matrix metalloproteinase-14 Human genes 0.000 description 1
- 102000004043 Matrix metalloproteinase-15 Human genes 0.000 description 1
- 108090000560 Matrix metalloproteinase-15 Proteins 0.000 description 1
- 102000018697 Membrane Proteins Human genes 0.000 description 1
- 108010052285 Membrane Proteins Proteins 0.000 description 1
- 241000699670 Mus sp. Species 0.000 description 1
- 108091007491 NSP3 Papain-like protease domains Proteins 0.000 description 1
- 108091028043 Nucleic acid sequence Proteins 0.000 description 1
- 206010030155 Oesophageal carcinoma Diseases 0.000 description 1
- 241000283973 Oryctolagus cuniculus Species 0.000 description 1
- 206010033128 Ovarian cancer Diseases 0.000 description 1
- 206010061535 Ovarian neoplasm Diseases 0.000 description 1
- 108090000526 Papain Proteins 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- 229920001213 Polysorbate 20 Polymers 0.000 description 1
- 238000010806 PrimeScriptTM RT Reagent kit Methods 0.000 description 1
- 108010076504 Protein Sorting Signals Proteins 0.000 description 1
- 238000002123 RNA extraction Methods 0.000 description 1
- 108020004511 Recombinant DNA Proteins 0.000 description 1
- 229920002684 Sepharose Polymers 0.000 description 1
- 238000012300 Sequence Analysis Methods 0.000 description 1
- 208000005718 Stomach Neoplasms Diseases 0.000 description 1
- 102100030416 Stromelysin-1 Human genes 0.000 description 1
- 101710108790 Stromelysin-1 Proteins 0.000 description 1
- 102100028847 Stromelysin-3 Human genes 0.000 description 1
- 108050005271 Stromelysin-3 Proteins 0.000 description 1
- 102100023935 Transmembrane glycoprotein NMB Human genes 0.000 description 1
- 208000006105 Uterine Cervical Neoplasms Diseases 0.000 description 1
- 102000005789 Vascular Endothelial Growth Factors Human genes 0.000 description 1
- 108010019530 Vascular Endothelial Growth Factors Proteins 0.000 description 1
- 101150030763 Vegfa gene Proteins 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 125000000539 amino acid group Chemical group 0.000 description 1
- 230000000078 anti-malarial effect Effects 0.000 description 1
- 238000011091 antibody purification Methods 0.000 description 1
- 230000000890 antigenic effect Effects 0.000 description 1
- 239000002246 antineoplastic agent Substances 0.000 description 1
- 229940041181 antineoplastic drug Drugs 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 229960002685 biotin Drugs 0.000 description 1
- 235000020958 biotin Nutrition 0.000 description 1
- 239000011616 biotin Substances 0.000 description 1
- 201000008275 breast carcinoma Diseases 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000008619 cell matrix interaction Effects 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 230000012292 cell migration Effects 0.000 description 1
- 230000003833 cell viability Effects 0.000 description 1
- 201000010881 cervical cancer Diseases 0.000 description 1
- 210000004978 chinese hamster ovary cell Anatomy 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 108020001096 dihydrofolate reductase Proteins 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 201000005619 esophageal carcinoma Diseases 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 210000002950 fibroblast Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 206010017758 gastric cancer Diseases 0.000 description 1
- 238000010353 genetic engineering Methods 0.000 description 1
- 210000004602 germ cell Anatomy 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 235000013922 glutamic acid Nutrition 0.000 description 1
- 239000004220 glutamic acid Substances 0.000 description 1
- 230000013595 glycosylation Effects 0.000 description 1
- 238000006206 glycosylation reaction Methods 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 238000005534 hematocrit Methods 0.000 description 1
- 206010073071 hepatocellular carcinoma Diseases 0.000 description 1
- 238000002868 homogeneous time resolved fluorescence Methods 0.000 description 1
- 210000000987 immune system Anatomy 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000005847 immunogenicity Effects 0.000 description 1
- 238000002991 immunohistochemical analysis Methods 0.000 description 1
- 238000012151 immunohistochemical method Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 102000006495 integrins Human genes 0.000 description 1
- 108010044426 integrins Proteins 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 229930027917 kanamycin Natural products 0.000 description 1
- 229960000318 kanamycin Drugs 0.000 description 1
- SBUJHOSQTJFQJX-NOAMYHISSA-N kanamycin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N SBUJHOSQTJFQJX-NOAMYHISSA-N 0.000 description 1
- 229930182823 kanamycin A Natural products 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 238000012917 library technology Methods 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000036457 multidrug resistance Effects 0.000 description 1
- 239000013642 negative control Substances 0.000 description 1
- 208000002154 non-small cell lung carcinoma Diseases 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 210000001672 ovary Anatomy 0.000 description 1
- 230000002018 overexpression Effects 0.000 description 1
- 238000004091 panning Methods 0.000 description 1
- 229940111202 pepsin Drugs 0.000 description 1
- 230000003285 pharmacodynamic effect Effects 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 238000013326 plasmid cotransfection Methods 0.000 description 1
- 108091033319 polynucleotide Proteins 0.000 description 1
- 102000040430 polynucleotide Human genes 0.000 description 1
- 239000002157 polynucleotide Substances 0.000 description 1
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 1
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 1
- 229920001184 polypeptide Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 210000001243 pseudopodia Anatomy 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008844 regulatory mechanism Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 201000011549 stomach cancer Diseases 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229960005322 streptomycin Drugs 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000012096 transfection reagent Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003146 transient transfection Methods 0.000 description 1
- 108091007466 transmembrane glycoproteins Proteins 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 230000005747 tumor angiogenesis Effects 0.000 description 1
- 230000005748 tumor development Effects 0.000 description 1
- 208000029729 tumor suppressor gene on chromosome 11 Diseases 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/2803—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/42—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against immunoglobulins
- C07K16/4208—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against immunoglobulins against an idiotypic determinant on Ig
- C07K16/4241—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against immunoglobulins against an idiotypic determinant on Ig against anti-human or anti-animal Ig
-
- 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
- A61K39/395—Antibodies; Immunoglobulins; Immune serum, e.g. antilymphocytic serum
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/16—Drugs for disorders of the alimentary tract or the digestive system for liver or gallbladder disorders, e.g. hepatoprotective agents, cholagogues, litholytics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P11/00—Drugs for disorders of the respiratory system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P15/00—Drugs for genital or sexual disorders; Contraceptives
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/005—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies constructed by phage libraries
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/32—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against translation products of oncogenes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/42—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against immunoglobulins
-
- 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
- A61K2039/505—Medicinal preparations containing antigens or antibodies comprising antibodies
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/20—Immunoglobulins specific features characterized by taxonomic origin
- C07K2317/24—Immunoglobulins specific features characterized by taxonomic origin containing regions, domains or residues from different species, e.g. chimeric, humanized or veneered
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/50—Immunoglobulins specific features characterized by immunoglobulin fragments
- C07K2317/56—Immunoglobulins specific features characterized by immunoglobulin fragments variable (Fv) region, i.e. VH and/or VL
- C07K2317/565—Complementarity determining region [CDR]
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/50—Immunoglobulins specific features characterized by immunoglobulin fragments
- C07K2317/56—Immunoglobulins specific features characterized by immunoglobulin fragments variable (Fv) region, i.e. VH and/or VL
- C07K2317/567—Framework region [FR]
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/60—Immunoglobulins specific features characterized by non-natural combinations of immunoglobulin fragments
- C07K2317/62—Immunoglobulins specific features characterized by non-natural combinations of immunoglobulin fragments comprising only variable region components
- C07K2317/622—Single chain antibody (scFv)
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/70—Immunoglobulins specific features characterized by effect upon binding to a cell or to an antigen
- C07K2317/73—Inducing cell death, e.g. apoptosis, necrosis or inhibition of cell proliferation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/70—Immunoglobulins specific features characterized by effect upon binding to a cell or to an antigen
- C07K2317/76—Antagonist effect on antigen, e.g. neutralization or inhibition of binding
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/90—Immunoglobulins specific features characterized by (pharmaco)kinetic aspects or by stability of the immunoglobulin
- C07K2317/92—Affinity (KD), association rate (Ka), dissociation rate (Kd) or EC50 value
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Veterinary Medicine (AREA)
- Pharmacology & Pharmacy (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Genetics & Genomics (AREA)
- Biochemistry (AREA)
- Biophysics (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Engineering & Computer Science (AREA)
- Tropical Medicine & Parasitology (AREA)
- Epidemiology (AREA)
- Virology (AREA)
- Microbiology (AREA)
- Mycology (AREA)
- Oncology (AREA)
- Dermatology (AREA)
- Reproductive Health (AREA)
- Endocrinology (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Peptides Or Proteins (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
本发明公开了一种抗BASIGIN人源化抗体及其应用,该抗体包含免疫球蛋白轻链可变区和免疫球蛋白重链可变区,所述的免疫球蛋白轻链可变区包含CDR1:如序列表中SEQ ID NO:13所示;CDR2:如序列表中SEQ ID NO:14所示;CDR3:如序列表中SEQ ID NO:15所示;所述的免疫球蛋白重链可变区包含CDR1:如序列表中SEQ ID NO:16所示;CDR2:如序列表中SEQ ID NO:17所示;CDR3:如序列表中SEQ ID NO:18所示。所述的抗BASIGIN人源化抗体在制备治疗肺癌、肝癌和结直肠癌药物中的应用;所述的抗BASIGIN人源化抗体在制备治疗疟疾药物中的应用。
Description
技术领域
本发明涉及生物技术领域,具体地说,本发明提供了一种抗BASIGIN人源化抗体及其应用。
背景技术
BASIGIN(EMMPRIN、Neurothelin、M6antigen、BASIGIN)是一种高度糖基化的、分子量为50~60kD的跨膜糖蛋白,属免疫球蛋白超家族(IgSF)成员。在人类,BASIGIN共有269个氨基酸组成,可分为胞外区、跨膜区及胞内区。N端起始翻译后前21个残基为信号肽,22~205构成胞外区,206~229为跨膜区,具有典型的亮氨酸拉链结构,C端230~269为胞内区。已证实BASIGIN在许多类型的人实体瘤,如肺癌、肝癌、宫颈癌、结肠癌、乳腺癌、卵巢癌、食管癌或胃癌中过度表达。
既往研究表明,BASIGIN分子是肿瘤发展过程重要的功能性膜蛋白,参与多种与癌症有关的现象,如:
①BASIGIN介导肿瘤细胞的粘附和运动:肿瘤细胞表面表达的BASIGIN与vinclin相互作用,促进肿瘤细胞伪足形成,铺展及粘附;与膜联蛋白annxinII相互作用,促进肿瘤细胞MMP-2分泌,增强肿瘤细胞运动能力和侵袭潜能;通过刺激肿瘤细胞自身及其周围的成纤维细胞,分泌多种基质金属蛋白酶(extracellularmatrixmetalloproteinase,MMP),包括MMP-1、MMP-2、MMP-3、MMP-11以及MT1-MMP和MT2-MMP等,从而加快肿瘤周围基质的降解,促进了肿瘤的转移。
②BASIGIN参与肿瘤细胞的无氧代谢:BASIGIN是单羧酸转运体(monocarboxylatetransporter)MCT-1和MCT-4的重要分子伴侣。BASIGIN可以与MCT-1和MCT-4相互结合,辅助它们在细胞膜上正确定位,并继续调节它们对乳酸代谢产物的转运功能。由于肿瘤细胞主要依靠无氧代谢产生能量,因此BASIGIN可间接通过影响MCT的表达和功能调节肿瘤细胞的能量代谢。
③BASIGIN促进肿瘤细胞耐药:BASIGIN分子在通过共表达调节机制影响MDR基因的转录,促进P-g的表达,从而可诱导肿瘤的多药耐药。Kanekura等证实BASIGIN通过P-g导致MDR,所以下调BASIGIN的表达可能是一个有效抵制MDR的靶点。另外,BASIGIN促进p-TFII-I细胞核内定位,上调未折叠蛋白反应(UPR)的关键因子Bip表达,引起肿瘤细胞内质网应激和UPR,从而抑制凋亡及对药物的不敏感性,抑制BASIGIN分子可促进肝癌细胞凋亡,并可增强肿瘤细胞对现有抗肿瘤药物的敏感性。
④BASIGIN上调VEGF表达促进肿瘤新生血管形成,抑制BASIGIN的表达,能够显著抑制VEGF的分泌和肿瘤血管的生成。
⑤BASIGIN结合多种分子参与相互作用:BASIGIN蛋白的跨膜段存在一个在进化上高度保守的负电荷谷氨酸,是其可以与多种细胞膜蛋白发生相互作用的结构基础,同时也提示BASIGIN可以通过与多种蛋白的相互作用,影响细胞的多种生理活动。BASIGIN可以通过与CD98、Integrin、caveolin-1、cyclophilins(CyP)等多种蛋白相互作用,从能量代谢、细胞-基质相互作用、信号传导等多个方面影响肿瘤细胞的生长和转移过程。
此外,多项回顾性研究还表明BASIGIN分子在肿瘤组织中的表达强度与肿瘤病人的预后之间,存在着紧密的相关性。在非小细胞肺癌病人中,BASIGIN表达增高的水平与病人的预后情况密切相关。
因此,BASIGIN分子已成为肿瘤治疗的新靶点,其中抗体药物“利卡汀”的研制成功,证明了该靶点成药的安全性和有效性。
此外,红细胞上表达的BASIGIN通过与恶性疟原虫的棒状体蛋白PfRh5以配体-受体的方式发生相互作用,介导了原虫与红细胞的远端识别,是恶性疟原虫入侵红细胞的关键环节。PfRh5与红细胞上的BASIGIN分子的相互作用在不同恶性疟虫株是普遍存在的,提示靶向红细胞上的BASIGIN分子有望成为抗疟新药的重要靶点。新型的抗人红细胞的BASIGIN分子的抗疟药物与传统的抗疟化学药物共同使用,能够克服化疗药物的耐药性。
单克隆抗体(McAb)以其高特异性、高亲和力、毒副作用小、免疫原性低、体内作用时间长、可利用体内自身免疫系统发挥疗效等优点,在许多疾病的诊疗中得到广泛应用,成为新型药物研制的一条有效途径。然而,鼠源McAb重复注入人体内会引起患者诱发人抗鼠抗体(humanantimouseantibody,HAMA)反应,出现全身过敏毒性反应并阻断抗体功效的发挥。因此,人源抗体和人源化抗体以其特有的优势越来越成为抗体药物研发的主流趋势。
本发明基于以上的研究背景,通过噬菌体抗体库筛选高亲和力的新型抗BASIGIN人源抗体,并通过实验验证其生物学活性。
发明内容
针对现有技术中的缺陷和不足,本发明的目的是提供一种抗BASIGIN人源化抗体及其应用。
第一方面,本发明提供了三种抗人BASIGIN人源化抗体,分别命名为单克隆抗体HP6H8-1、单克隆抗体HP6H8-2和单克隆抗体HP6H8-3,其均包含免疫球蛋白轻链可变区和免疫球蛋白重链可变区;
(1)免疫球蛋白轻链可变区包含CDR1:如序列表中SEQIDNO:13所示;CDR2:如序列表中SEQIDNO:14所示;CDR3:如序列表中SEQIDNO:15所示;
(2)免疫球蛋白重链可变区包含CDR1:如序列表中SEQIDNO:16所示;CDR2:如序列表中SEQIDNO:17所示;CDR3:如序列表中SEQIDNO:18所示;
在一个优选实例中,单克隆抗体HP6H8-1包含如SEQIDNO:1所示的轻链可变区氨基酸序列和如SEQIDNO:3所示的重链氨基酸序列;该抗体的亲和性KD=9.05×10-11M。
在一个优选实例中,单克隆抗体HP6H8-2包含如SEQIDNO:5所示的轻链可变区氨基酸序列和如SEQIDNO:7所示的重链氨基酸序列;该抗体的亲和性KD=5.83×10-11M。
在一个优选实例中,单克隆抗体HP6H8-3包含如SEQIDNO:9所示的轻链可变区氨基酸序列和如SEQIDNO:11所示的重链氨基酸序列;该抗体的亲和性KD=1.02×10-10M。
本发明的另一目的在于提供编码上述重组人源化抗体的DNA分子。
在一个优选实例中,单克隆抗体HP6H8-1轻链可变区核苷酸序列为SEQIDNO:2所示的序列,重链可变区的核苷酸序列为SEQIDNO:4所示的序列,该抗体的亲和性KD=9.05×10-11M;
在一个优选实例中,单克隆抗体HP6H8-2轻链可变区核苷酸序列为SEQIDNO:6所示的序列,重链可变区的核苷酸序列为SEQIDNO:8所示的序列,该抗体的亲和性KD=5.83×10-11M;
在一个优选实例中,单克隆抗体HP6H8-3轻链可变区核苷酸序列为SEQIDNO:10所示的序列,重链可变区的核苷酸序列为SEQIDNO:12所示的序列,该抗体的亲和性KD=1.02×10-10M。
在一个优选实例中,上述抗体的轻链恒定区为κ,重链恒定区为IgG2组成,然而本发明也保护其它抗体的同种型,如IgG1,IgG3,IgG4,IgM,IgA1,IgA2,IgD,IgE。本发明也保护抗体的抗原结合片段,包括Fab,Fv,scFv和单链抗体。
本发明的另一个目的在于提供抗BASIGIN人源化单克隆抗体的表达载体,使通过G418筛选获得抗BASIGIN单克隆抗体的轻、重链基因同时高表达的重组CHO细胞克隆。
本发明的另一个目的还在于提供了一种制备所述抗BASIGIN单克隆抗体的方法,该方法包括:
a)提供所述抗BASIGIN单克隆抗体的DNA分子;
b)提供一种表达载体,该载体含有步骤a)中所述的DNA分子及表达该DNA分子的调控序列;
c)用步骤a)中所述的表达载体转化宿主细胞,特别是哺乳动物细胞,优选的是CHO细胞;
d)在适合所述单克隆抗体的培养条件下培养步骤c)中所得的宿主细胞和分离纯化步骤c)中所表达的所述单克隆抗体。
本发明的另一目的,抗人BASIGIN人源化抗体在制备治疗BASIGIN表达相关疾病药物中的应用,BASIGIN表达相关疾病包括肺癌、肝癌、结肠癌和疟疾4。
为克服鼠源McAb重复注入人体内会引起患者诱发人抗鼠抗体(humanantimouseantibody,HAMA)反应,出现全身过敏毒性反应并阻断抗体功效的发挥的缺点,本发明采用噬菌体展示抗体文库技术、计算机辅助抗体结构设计等技术,以分泌抗人BASIGIN分子的鼠源性抗体6H8(又名HAb18GC2)的杂交瘤细胞株HAb18Gedomab2(保藏号CCTCC-C200636,详见专利号:ZL200710007452.2中记载)为基础,通过生物信息学明确该抗体轻重链可变区的CDR和FR区,利用计算机辅助抗体结构设计手段,设计了人源化抗体的框架区,并应用分子生物学手段进行了全分子的基因构建,真核表达了抗人BASIGIN人源化抗体。抗体亲和力及免疫组化分析结果表明,抗人BASIGIN人源化抗体亲和力优于鼠源性亲本抗体,并且维持了亲本抗体识别抗原的特异性。抗人BASIGIN人源化抗体体外抑制恶性疟原虫侵袭红细胞实验结果提示了该抗体在治疗或预防肺癌、肝癌、结肠癌、疟疾方面的用途。
附图说明
图1为VHframework中选择更换的氨基酸;
图2为VLframework中选择更换的氨基酸;
图3为嵌合抗体和人源化抗体的ELISA分析;
图4为轻链基因表达载体pcDNA3.3-LC-N-229-205结构示意图;
图5为重链基因表达载体pOptivec-HC-D-229-205结构示意图;
图6为抗体表达量结果图;
图7为人源化抗体的HP6H8-1免疫组织化学染色结果;
图8为人源化抗体HP6H8-1体外抑制恶性疟原虫侵袭红细胞实验;
以下结合说明书附图和具体实施方式对本发明做具体说明。
具体实施方式
一、术语解释:
免疫球蛋白是指一类结构上相关的糖蛋白,该糖蛋白由两对多肽链组成,一对低分子量的轻链(L)和一对高分子量的重链(H),所有四条链通过二硫键互相连接。每条重链典型地由重链可变区(在本文中缩写为VH)和重链恒定区(在本文中缩写为CH)组成。每条轻链典型地由轻链可变区(在本文中缩写为VL)和轻链恒定区(在本文中缩写为CL)组成。轻链恒定区典型地由一个结构域CL组成。VH和VL可进一步细分成高变的区(或序列上高变的高变区和/或结构确定的环的形式),也称为互补决定区(CDR),中间穿插着较其保守的区,称为框架区(FR)。每个VH和VL典型地由三个CDR和四个FR组成,从氨基末端到羧基末端按下面顺序排布,FR1、CDR1、FR2、CDR2、FR3、CDR3、FR4(可参见Chothia和Lesk,1987)。典型地,在这区中氨基酸残基的编号可通过Kabat等人,SequencesofProteinsofImmunologicalInterest,5thEd,PublicHealthService,NationalInstitutesofHealth,Bethesda,MD.(1991)(短语可变结构域残基编号,如Kabat中或根据Kabat,在本文中指用于重链可变结构域或轻链可变结构域的这种编号系统)中描述的方法执行。
“人源化抗体”,如在本文中使用的,在本文中指来源于非人抗体,典型地鼠科动物的抗体,该抗体保留或基本保留亲本抗体(parentantibody)的抗原结合的性质但它在人中的免疫性低。由于本发明抗体由结构和功能特征限定,因此“人源化抗体”可与“抗体”交换使用。
互补决定区(CDR),如在本文中使用的,是指多种氨基酸序列,该多种氨基酸序列共同限定免疫球蛋白结合位点的可变片段(Fv)区的结合亲和力和特异性。
框架区(FR),如在本文中使用的,是指插入在CDR之间的氨基酸序列。抗体的这些部分用来将CDR保持在适当的位置(允许CDR结合抗原)。轻链可变区和重链可变区均包含框架区(FR)和典型地三个CDR。
恒定区(CR),如在本文中使用的,是指赋予效应子功能的抗体分子的部分。题述人源化抗体的恒定区来源于人免疫球蛋白。重链恒定区可选自五种同种型:α、δ、ε、γ或μ。进一步地,各种亚类的重链(例如,重链的IgG亚类)可引起不同效应子功能,因而,通过选择期望的重链恒定区,可生产具有期望的效应子功能的抗体。优选的重链恒定区是γ1(IgG1)、γ2(IgG2)、γ3(IgG3)和γ4(IgG4),更优选γ2(IgG2)。轻链恒定区可以是κ或λ型,优选为κ型。
技术人员应当理解免疫球蛋白重链或轻链的可变区或恒定区可按照描述的通过使用标准的重组DNA技术连接,从而创建可在适宜的宿主中被表达(从而产生所述免疫球蛋白链(一种或多种))的多核苷酸,或可通过使用肽化学合成连接的可变区和恒定区。
本发明的人源化抗体保存了亲本抗体的结合性质的重要部分,即单克隆抗体,该亲本抗体也就是称为抗人BASIGIN分子的鼠源性抗体6H8,由杂交瘤细胞株HAb18Gedomab2产生,该杂交瘤细胞株HAb18Gedomab2于2006年12月13日保藏在中国典型培养物保藏中心(CCTCC-C200636,详见专利号:ZL200710007452.2中记载)。特别地,本发明的抗人BASIGIN人源化抗体保留了特异性结合亲本抗体识别抗原的能力,该亲本抗体用于生产此种人源化抗体。优选地,人源化抗体展现出与亲本抗体相同或基本相同的抗体结合亲和力(affinity)和亲合力(avidity)。理想地,抗体的亲和力(KD)将不大于亲本抗体亲和力的10倍。
技术人员应当理解,“亲合力(avidity)”是指两个分子之间,例如抗体和抗原之间相互作用的总强度。亲合力取决于相互作用的亲和力和价态。而且,“亲和力”是指分子(例如,抗体)的单个结合位点与配体(例如,抗原)之间结合的强度。分子X对配体Y的亲和力可由解离常数(Kd)表示,解离常数是占据溶液中存在的一半的X分子的结合部位所需的Y浓度。更小的Kd表示更强或更高的亲和力相互作用,和需要更低的配体浓度来占据该部位。
“人源化抗体”或“抗体”,如本发明中使用的,包括完整分子以及能与表位决定簇结合的它们的片段,例如Fab、F(ab′)2和Fv。这些抗体片段保留了选择性结合到人C5aR的一些能力,这些片段的实施例包括,但不限于下面:
(1)Fab,含有抗体分子的单价抗原结合片段的片段,该片段可通过酶木瓜蛋白酶将全抗体(wholeantibody)降解生成完整的轻链和一个重链的一部分;
(2)Fab’,可通过以下方式获得抗体分子片段,用胃蛋白酶处理全抗体,接着还原,从而生成完整的轻链和重链的一部分;每个抗体分子可得到两个Fab’片段;
(3)(Fab’)2,可通过用酶胃蛋白酶处理但没有随后还原以获得抗体片段;(Fab)2是通过两个二硫键结合在一起的两个Fab’片段的二聚体;
(4)Fv,定义为含有表示为两条链的轻链可变区和重链可变区的基因工程片段;
下面将结合实施例进一步详细地描述本发明。然而应当理解,列举这些实施例只是为了起说明作用,而不是用来限制本发明。下述实施例中所使用的实验方法如无特殊说明,均为常规方法。下述实施例中所使用的材料、试剂等,如无特殊说明,均可从商业途径得到。
一、含抗人BASIGIN分子的鼠源性抗体6H8轻、重链可变区的噬菌体展示载体的构建
1.材料
杂交瘤细胞株HAb18GC2,为专利申请人于2006年(专利号:ZL200710007452.2)制备并保藏于中国典型培养物保藏中心,保藏编号:CCTCC-C200636。
引物:
VH基因扩增引物:
上游引物:pFL-6HB-F1,见序列表中SEQIDNO:19;
下游引物:linker-R1,见序列表中SEQIDNO:20。
VL基因扩增引物:
上游引物:linker-F1,见序列表中SEQIDNO:21;
下游引物:pFL-6HB-R2,见序列表中SEQIDNO:22。
2.方法和结果
2.1总RNA提取:参照总RNA提取试剂盒(Omegabio-tek)说明书抽提杂交瘤细胞HAb18GC2中的总RNA。并用琼脂糖凝胶电泳检测总RNA的完整性。
2.2逆转录cDNA:取1μg2.1中得到的总RNA,参照PrimeScriptRTreagentKit(TaKaRa)反转录试剂盒说明书合成cDNA第一链,-20℃冻存备用。
2.3PCR扩增VH基因和VL基因。用2.2制备的cDNA为模板,利用VH基因引物和VL基因引物分别扩增得到VH基因片段和VL基因片段。扩增体系按High-FidelityDNAPolymerase(NEB)说明书配置。PCR反应条件:94℃,5min;94℃,15s,54℃,30s,72℃,1min,35个循环;72℃,10min。1%琼脂糖凝胶电泳观察所扩增片段的大小。
2.4scFv基因的扩增:以相同摩尔数混合2.3中得到的VH基因片段和VL基因片段,利用overlap-PCR扩增scFv基因,扩增体系如下:VH基因片段1pmol,VL基因片段1pmol,pFL-6HB-F1(SEQIDNO:21)100pmol,pFL-6HB-R2(SEQIDNO:22)100pmol,10×PCR缓冲液10μL。PCR反应条件:95℃,5min;95℃,15s,56℃,30s,72℃,1min,35个循环;72℃,10min。1%琼脂糖凝胶电泳观察所扩增片段的大小。
切下目的条带,使用DNA片段纯化剂盒(Omegabio-tek)回收得到含酶切位点NcoI和NotI的scFv基因片段。
2.5scFv基因酶切及与载体连接及连接产物转化:将上述制备的含酶切位点NcoI和NotI的scFv基因片段及载体质粒pGEM-T载体(Promega)用紫外分光光度计测核酸浓度后进行酶切。
酶切方法包括:取scFv回收产物或pGEM-T载体3μg,加入NcoI-HF和NotI-HF限制性内切酶(NEB)各1μL,10×CutSmart缓冲液5μL,加水到50μL,37℃酶切1h。1%琼脂糖凝胶电泳切下目的条带,进行胶回收,方法同2.4得到酶切后的scFv回收产物。
取酶切后的scFv回收产物0.7μg,酶切后的载体pGEM-T1.4μg,T4连接酶40U,5×连接缓冲液40μL,16℃连接过夜。取连接产物转化TG1感受态细胞。涂布于LB琼脂平板上,37℃培养过夜。第二天,随机挑取10个单克隆,利用载体通用引物进行阳性克隆菌落鉴定;挑取5个阳性克隆,进行测序验证,测序正确的克隆保存于-40℃备用,获得含有完整6H8轻重链可变区基因的scFv基因表达载体pFL-6H8。
二、限定鼠源性抗BASIGIN单克隆抗体6H8的CDR和框架残基
用www.expasy.org在线软件将编码抗BASIGIN的鼠源性抗体6H8,又名HAb18GC2单克隆抗体(专利号:ZL200710007452.2)的轻、重链可变区核苷酸序列翻译为其编码的氨基酸序列。根据Kabat数据库确定轻链可变区序列中的互补决定区CDR1、CDR2和CDR3的氨基酸序列分别如序列表中SEQIDNO:13、SEQIDNO:14和SEQIDNO:15所示。重链可变区序列中的互补决定区CDR1、CDR2和CDR3的氨基酸序列分别如序列表中SEQIDNO:16、SEQIDNO:17和SEQIDNO:18所示。
三、挑选合适的人抗体框架序列
为了挑选合适的小鼠CDR移植在其上的人抗体框架序列,本发明人借助源自Kabat蛋白质数据库提供的抗体序列构建的人源抗体序列信息数据库;利用DiscoveryStudio(VIOVIA,version3.5),通过同源模建、力学优化技术对人源化前后的抗体分子结构进行分析及替换,确保被替换的氨基酸不会改变VH和VL的整体骨架结构,特别是不会破坏β-strand二级结构,从而保持抗体原有亲和力。并将人源抗体序列信息数据库中人源抗体可变区框架与前述的CDR进行拼接,筛选合理的抗体可变区,结果获得如图1所示的VHframework和如图2所示的VLframework。。
四、噬菌体展示BASIGIN人源化抗体文库的构建和筛选
根据三获得的抗体序列及计算机模拟获得的抗体氨基酸序列,包括轻链可变区氨基酸序列SEQIDNO:1,SEQIDNO:5和SEQIDNO:9,重链可变区氨基酸序列SEQIDNO:3,SEQIDNO:7和SEQIDNO:11。选择在哺乳动物细胞中常用的密码子进行反向翻译,获得相应的抗体基因核苷酸序列。利用基因全合成PCR技术,设计相应的引物,通过重叠PCR的方法获得全长基因;克隆入克隆载体,进行序列测定。
1.材料
一中所得到的抗BASIGIN鼠源ScFv克隆引物:
人源化VH基因扩增引物:
上游引物:6H8-L1_F1,见序列表中SEQIDNO:23;6H8-L1_F2,见序列表中SEQIDNO:25;6H8-L1_F3,见序列表中SEQIDNO:27;
下游引物:6H8-L1_R1,见序列表中SEQIDNO:24;6H8-L1_R3,见序列表中SEQIDNO:26;6H8-L1_R4,见序列表中SEQIDNO:28;6H8-L1_R2,见序列表中SEQIDNO:33;6H8-L1_R5,见序列表中SEQIDNO:34;
人源化VL基因扩增引物:
上游引物:6H8-L1_F4,见序列表中SEQIDNO:29;6H8-L1_F6,见序列表中SEQIDNO:31;6H8-L1_F5,见序列表中SEQIDNO:36;
下游引物:6H8-L1_R6,见序列表中SEQIDNO:30;6H8-L1_R8,见序列表中SEQIDNO:32;6H8-L1_R7,见序列表中SEQIDNO:35;
2.利用以上引物进行PCR扩增目的片段:
扩增方案如下:
2.1以pFL-6H8为模板,分别以6H8-L1_F1+6H8-L1_R1、6H8-L1_F2+6H8-L1_R3、6H8-L1_F3+6H8-L1_R4、6H8-L1_F4+6H8-L1_R6、6H8-L1_F6+6H8-L1_R8为引物对,扩增目的基因;反应条件为95℃,3min;95℃,30sec;55℃,30sec;72℃,40sec;40个循环,最后72℃延伸,10min。PCR反应结束后,利用1%琼脂糖凝胶电泳纯化回收PCR产物并连入pMD18-T载体(TaKaRa)。将测序正确的片段分别命名为6H8-L1-1片段、6H8-L1-2片段、6H8-L1-3片段、6H8-L1-4片段和6H8-L1-5片段。
2.2分别以2.1中获得的6H8-L1-1片段、6H8-L1-2片段、6H8-L1-3片段、6H8-L1-4片段和6H8-L1-5片段为模板,以6H8-L1_F1+6H8-L1_R2、6H8-L1_F2+6H8-L1_R5、6H8-L1_F4+6H8-L1_R7、6H8-L1_F5+6H8-L1_R8为引物,扩增目的基因;反应条件同2.1。PCR反应结束后,利用1%琼脂糖凝胶电泳纯化回收PCR产物并连入pMD18-T载体(TaKaRa),筛选阳性克隆测序验证,将测序正确的片段分别命名为6H8-L1-6片段、6H8-L1-9片段、6H8-L1-7片段和6H8-L1-8片段。
2.3.以2.2中获得的6H8-L1-6片段和6H8-L1-9片段为模板,以6H8-L1_F1+6H8-L1_R5为引物,扩增目的基因,反应条件同2.1,测序结果命名为6H8-L1-10片段;以6H8-L1-7片段和6H8-L1-8片段为模板,以6H8-L1_F4+6H8-L1_R8为引物,扩增目的基因,反应条件同2.1,测序结果命名为6H8-L1-11片段;反应条件同2.1。
2.4.以2.3中获得的6H8-L1-10片段和6H8-L1-11片段为模板,以6H8-L1_F1+6H8-L1_R8为引物,扩增目的基因,测序结果命名为6H8-L1-12片段;反应条件同2.1。
2.5.用NcoI-HF和NotI-HF(NEB)分别对PCR扩增的6H8-L1-12片段进行酶切,经1%琼脂糖电泳分离后,用GelExtractionKit(Omegabio-tek)纯化酶切片段。然后,将纯化获得的酶切片段与同酶切的噬菌体载体pComb3Xss用T4DNA连接酶(TaKaRa公司)进行连接,去离子后电转化TG1感受态细胞。接种于LB培养平板上进行克隆筛选。统计6H8-L1抗体噬菌体文库库容,保存库于-80℃备用。
2.66H8-L1噬菌体展示抗体库的淘选
利用固相淘选方法对6H8-L1抗体噬菌体文库进行抗原特异性淘选。具体操作如下:
复苏6H8-L1抗体噬菌体文库于60ml的2YT培养基中,于37℃摇床中培养至OD600=0.3-0.4。加入M13KO7辅助噬菌体(Invitrogen);37℃静置孵育30分钟,摇床孵育60分钟。离心1500转/10分钟,弃上清,用60ml的50ug/ml卡那霉素(无葡萄糖)的培养基重悬细胞,并于30℃摇床中过夜培养;离心12000转/10分钟沉淀噬菌体文库,转移上清至离心管中,30ml/管。向每支离心管加入7.5mlPEG/NaCl,混合均匀,置于冰上1h。离心,12000转,5分钟,弃上清;用2.2ml含有PBS-5%BSA的溶液重悬噬菌体,离心,12000转,5分钟,去除细胞碎片。
用表达的BASIGIN分子包板进行亲和筛库,经过5轮的淘选(吸附-洗脱-扩增),每一轮淘选的抗原包被浓度依次递减(1ug/ml、0.1ug/ml、0.01ug/ml、0.001ug/ml、0.0001ug/ml)。淘选进行至S/N小于10时(S/N表示为信噪比),终止淘选实验,挑取768个克隆,诱导表达,获得scFv抗体用于Elisa检测。
五、ELISA分析及测序分析
用包被缓冲液(200mMNa2CO3/NaHCO3,pH9.2)将BASIGIN稀释为1μg/ml,每个反应孔中加50μl,4℃包被过夜;弃去反应孔中溶液,用1XPBS缓冲液洗涤3次,加200μl封闭缓冲液(2%BSA/1XPBSbuffer)室温下封闭1h;用200μl1XPBS缓冲液洗涤3次;加入含scFV抗体的细胞培养上清(8块96孔微孔板)和阴性对照(50μl/孔),室温温育2h;用200μl1XPBS缓冲液洗涤3次;加入用封闭缓冲液稀释(1:2500)的Anti-c-MycAb(HRP)(AbcamCat#ab19312,50μl/孔),室温温育1h;用200μl用1XPBS缓冲液洗涤6次;在各反应孔中加入TMB底物溶液(50μl/孔)反应10min;加入终止溶液(2MHCl,50μl/孔)以终止反应;用ELISA读板仪读取450nm的吸光值;
根据ELISA的结果,选取A450>2.0的123个克隆送测序(测序工作由上海博尚生物技术有限公司完成)。
DNA序列分析:参照人类抗体的germline数据库和http://www.bioinf.org.uk/abs/shab/评价序列的人源化程度。选择人源化程度的最好的26个scFV分子进行亲和力排序(表1)。
六、利用SPR测定ScFv抗体亲和力
1.SPR结合分析方法
利用ProteOnXPR36(Bio-Rad,XPR36)仪器进行抗体的亲和力测定。用0.04MEDC+0.01Msulfo-NHS(Bio-Rad)活化GLC芯片(Bio-Rad,1765011)。用10mMNaAc(pH4.5)稀释BASIGIN至10mM,并以30ul/min的速度注射到芯片上,使抗原与被活化的芯片通过氨基偶联。最后用1Methanolamine-HCl(Bio-Rad)灭活芯片;芯片转动90度后用缓冲液(PBS/0.005%Tween20)冲洗至基线平稳。在6个水平通道上分别注射5个含有ScFv抗体的细胞培养上清。进样速度为30ul/min。样品结合时间为60s,解离时间为900s;利用朗缪尔动力学(Kinetic-Langmuir)模型进行数据分析。
2.结果
使用SPR实时监测BASIGIN与含有ScFv抗体的TG1上清的结合,通过测定解离速率常数(Koff)反映BASIGIN与人源化ScFv抗体亲和力大小。结果见表1。发明人选取了Koff值最小的5个编号分别为11188,11214,11242,11245和11305的人源化ScFv进行完整抗体的构建。
表1SPR测定ScFv抗体亲和力结果
七、全人源化抗体构建
1.材料
1.1模板:根据前述亲和力排序的结果,五个克隆接种过夜培养,分别提取质粒,测序确认模板序列正确。
1.2引物:
全人源化抗体VL基因扩增引物:
上游引物:PCI-wbp229_F1,见序列表中SEQIDNO:37;
下游引物:pCI-6H8_R8,见序列表中SEQIDNO:38;
全人源化抗体VH基因扩增引物:
上游引物:PCI-wbp229_F2,见序列表中SEQIDNO:39;PCI-wbp229_F3,见序列表中SEQIDNO:40;6H8-L1_R2,见序列表中SEQIDNO:33;6H8-L1_R5,见序列表中SEQIDNO:34;
下游引物:PCI-wbp229_R1,见序列表中SEQIDNO:41;
2利用以上引物和模板分别进行PCR扩增目的片段:
扩增方案如下:
2.1以上述11188-58为模板,分别以PCI-wbp229_F1+pCI-6H8_R8和PCI-wbp229_F2+PCI-wbp229_R1为引物对,扩增完整人源化抗体WBP229-201-VL和VH;
2.2以上述11214-84为模板,分别以PCI-wbp229_F1+pCI-6H8_R8和PCI-wbp229_F2+PCI-wbp229_R1为引物对,扩增完整人源化抗体WBP229-202-VL和VH;
2.3以上述11242-111为模板,分别以PCI-wbp229_F1+pCI-6H8_R8和PCI-wbp229_F3+PCI-wbp229_R1为引物对,扩增完整人源化抗体WBP229-203-VL和VH;
2.4以上述11245-115为模板,分别以PCI-wbp229_F1+pCI-6H8_R8和PCI-wbp229_F3+PCI-wbp229_R1为引物对,扩增完整人源化抗体WBP229-204-VL和VH;
2.5以上述11305-123为模板,分别以PCI-wbp229_F1+pCI-6H8_R8和PCI-wbp229_F3+PCI-wbp229_R1为引物对,扩增完整人源化抗体WBP229-205-VL和VH;PCR扩增后,将PCR产物经琼脂糖凝胶电泳回收纯化。
2.6轻链可变区基因加入限制性内切酶NgoMIV和SnaBI进行酶切,重链可变区基因加入限制性内切酶NgoMIV和SnaBI进行酶切,酶切后经DNA纯化试剂盒进行纯化,并与相同限制性内切酶消化的含有hIgG2/k的哺乳动物细胞表达载体pCI-vector连接。连接产物转化到TOP10大肠杆菌,涂布在含有100μg/ml氨苄青霉素的LB琼脂培养基上。获得的阳性克隆在含有100μg/ml氨苄青霉素的LB液体培养基中培养,经过Invitrogen公司测序验证后,用质粒大抽试剂盒提取阳性克隆质粒,分别命名为WBP229-201~205。。
八、细胞瞬时转染及抗体纯化
利用Invitrogen公司的FreestyleMaxReagent转染试剂分别将WBP229-201~205的含轻、重链基因的质粒共转染入HEK293细胞(1.0×106个/ml),将转染后的细胞置于摇床37℃,5%CO2培养箱中震荡培养,摇床转速为120转。在转染7天后离心收取转染后的细胞上清液,采用ProteinA亲和层析柱从细胞培养上清中分离纯化目的抗体。选择表达量最高的3个人源化抗体WBP229-205含如SEQIDNO:1所示的轻链可变区氨基酸序列和如SEQIDNO:3所示的重链氨基酸序列,并命名为HP6H8-1;229-204含如SEQIDNO:5所示的轻链可变区氨基酸序列和如SEQIDNO:7所示的重链氨基酸序列,并命名为HP6H8-2;229-203含如SEQIDNO:9所示的轻链可变区氨基酸序列和如SEQIDNO:11所示的重链氨基酸序列,并命名为HP6H8-3。九、人源化抗体亲和力测定
1.ELISA测定人源化抗体亲和力
将200ngCD147重组蛋白包被到酶标板中,4℃静置过夜。用0.1%的BSA室温封闭1小时。将八中制备获得的3株抗体配制成10,100,1000,10000和100000ng/ml浓度,共5个梯度,每孔加入100μl,室温静置1小时。加入100μl1:4000稀释的辣根过氧化物酶标记的羊抗人轻链恒定区二抗(Millipore公司产品),室温静置1小时。加入TMB显色,并用2M的H2SO4终止反应。
用酶标仪在450nm下读数。从结果可看出,筛选得到的3株抗体及嵌合抗体c6H8对BASIGIN具有明显的亲和力,且其亲和力优于对照鼠源性亲本抗体6H8(图3)。
2.SPR测定人源化抗体亲和力
方法同六。
结果如表2所示。
表2SPR测定人源化抗体亲和力
综上所述,人源化后的抗体的亲和力优于鼠源性亲本抗体6H8。
十、高效人源化抗体表达载体构建及稳定表达细胞株筛选
根据九中的结果,选取编号“229-205”的基因序列进行高效表达载体的构建
1.轻链基因表达载体构建
基因合成229-205的VL片段,5’-3’分别引入限制性内切酶XbaI与BsiWI,对该片段及含有轻链恒定区基因的pcDNA3.3-LC-104new-M进行XbaI与BsiWI双酶切,1%琼脂糖凝胶电泳后切胶回收。将切胶纯化后的DNA片段(来自基因合成片段的416bp片段,与来自质粒pcDNA3.3-LC-104new-M的5712bp片段)进行连接反应,T4连接酶20μl体系16℃下反应20min,取10μl连接液转化大肠杆菌TOP10感受态细胞。进行菌落PCR鉴定、酶切鉴定以及测序后,挑一个正确的单克隆于200mlLB培养基,37℃,220rpm过夜振荡培养,大量抽提质粒,最终得到的质粒命名为pcDNA3.3-LC-N-229-205(如图4所示)。
2.重链基因表达载体构建
基因合成229-205的VH片段,5’-3’分别引入限制性内切酶XbaI与NheI,对该片段及含有重链恒定区基因的pOptivec-HC-208-M进行XbaI与NheI的双酶切,1%琼脂糖凝胶电泳后割胶回收。将割胶纯化后的DNA片段(来自基因合成片段的434bp片段,与来自质粒pOptivec-HC-208-M的5364bp片段)进行连接反应,T4连接酶20μl体系16℃下反应20min,取10μl连接液转化大肠杆菌TOP10感受态细胞。经菌落PCR鉴定、酶切鉴定以及测序后,挑一个正确的单克隆于200mlLB培养基,37℃,220rpm过夜振荡培养,大提质粒,最终得到的质粒命名为pOptivec-HC-D-229-205(如图5所示)。
3.CHO稳定表达细胞株的构建及筛选
用FreestyleMaxReagent(Invitrogen)将上述构建的人源化抗体轻链表达载体pcDNA3.3-LC-N-229-205和人源化抗体重链表达载体pOptivec-HC-D-229-205转染入CHO/DHFR细胞中。转染48小时后,首先用加入500μg/mlG418的OptiCHO培养基筛选传代,一直到细胞活率恢复到85%以上,再加入含有500nMMTX的筛选培养基中继续筛选。用ClonePixFL挑选单克隆。单克隆培养7-10天后,HTRF的方法检测细胞培养上清中抗体HP6H8-1表达量为2.23±0.18g/L(结果如图6所示)。
十一、免疫组化染色法测定人源化抗体的特异性
用免疫组织化学方法,检测抗体HP6H8-1与肿瘤组织的特异性结合能力,考察该抗体的免疫组织交叉反应。具体操作如下:常规二甲苯脱蜡、梯度酒精脱水、水化组织芯片;3%H2O2阻断灭活内源性过氧化物酶;正常羊血清工作液封闭;以抗体HP6H8-1为一抗,生物素标记的兔抗人Fc抗体为二抗,辣根过氧化物酶标记的链霉素卵白素工作液为三抗,DAB显色,苏木精复染,脱水透明后封片、镜检。
结果如图7所示,抗体HP6H8-1在肺癌、肝癌、结肠癌等恶性肿瘤组织中可见特异性着色,着色程度均为“++”或“+++”;而与正常组织极少结合。
以上结果表明,本发明所涉及的以CDR移植为基础的人源化抗体改造,并未影响鼠源性亲本抗体识别抗原的特异性,人源化抗体构建成功。
十二、HP6H8-1抗体抑制恶性疟原虫侵袭红细胞的体外抗疟实验
方法:用恶性疟原虫株Dd2、3D7、FCC1和Nf54)分别感染人红细胞(O型),当感染率≥1%,环状体≥80%时,加入单抗HP6H8-1,单抗终浓度为0.01;0.1;1;10;100(μg/ml)。原虫率0.5%,RBC压积2%,每个浓度梯度3个复孔。37度培养72小时后,进行薄血膜涂片,100倍油镜下计数原虫率。实验独立重复三次,取平均值。统计学数据用SPSS软件计算。
结果:人源化HP6H8-1单抗抑制恶性疟原虫株Nf54和FCC1的体外药效学实验结果如图8所示,给药72小时后,人源化单抗HP6H8-1对各种恶性疟原虫株均有明显的抗疟作用,对恶性疟原虫株的IC50分别为0.04、0.02、0.04、0.05mg/mL。
Claims (5)
1.一种抗BASIGIN人源化抗体,其特征在于,该抗体包含免疫球蛋白轻链可变区和免疫球蛋白重链可变区,所述的免疫球蛋白轻链可变区包含CDR1:如序列表中SEQIDNO:13所示;CDR2:如序列表中SEQIDNO:14所示;CDR3:如序列表中SEQIDNO:15所示;
所述的免疫球蛋白重链可变区包含CDR1:如序列表中SEQIDNO:16所示;CDR2:如序列表中SEQIDNO:17所示;CDR3:如序列表中SEQIDNO:18所示。
2.如权利要求1所述的抗BASIGIN人源化抗体,其特征在于,所述的抗BASIGIN人源化抗体包括单克隆抗体HP6H8-1,单克隆抗体HP6H8-1的轻链可变区氨基酸序列如SEQIDNO:1所示,单克隆抗体HP6H8-1的重链氨基酸序列如SEQIDNO:3所示。
3.如权利要求1所述的抗BASIGIN人源化抗体,其特征在于,所述的抗BASIGIN人源化抗体包括单克隆抗体HP6H8-2,单克隆抗体HP6H8-2的轻链可变区氨基酸序列如SEQIDNO:5所示,单克隆抗体HP6H8-2的重链氨基酸序列如SEQIDNO:7所示。
4.如权利要求1所述的抗BASIGIN人源化抗体,其特征在于,所述的抗BASIGIN人源化抗体包括单克隆抗体HP6H8-3,单克隆抗体HP6H8-3的轻链可变区氨基酸序列如SEQIDNO:9所示,单克隆抗体HP6H8-3的重链氨基酸序列如SEQIDNO:11所示。
5.如权利要求1、2、3或4所述的抗BASIGIN人源化抗体在制备治疗BASIGIN表达相关疾病药物中的应用,所述的BASIGIN表达相关疾病包括肺癌、肝癌、结肠癌和疟疾。
Priority Applications (28)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610285139.4A CN105820250B (zh) | 2016-04-29 | 2016-04-29 | 一种抗basigin人源化抗体及其应用 |
RU2018138053A RU2755150C2 (ru) | 2016-04-29 | 2017-05-02 | Гуманизированные антитела против базигина и их применение |
EP17788834.4A EP3448892A4 (en) | 2016-04-29 | 2017-05-02 | HUMANIZED ANTI-BASIGIN ANTIBODIES AND USES THEREOF |
CR20180515A CR20180515A (es) | 2016-04-29 | 2017-05-02 | Anticuerpos anti-basigin humanizados y uso de los mismos |
TNP/2018/000358A TN2018000358A1 (en) | 2016-04-29 | 2017-05-02 | Humanized anti-basigin antibodies and the use thereof. |
AU2017255888A AU2017255888B2 (en) | 2016-04-29 | 2017-05-02 | Humanized anti-BASIGIN antibodies and the use thereof |
CN201780041146.2A CN109476760B (zh) | 2016-04-29 | 2017-05-02 | 人源化抗basigin抗体及其用途 |
MYPI2018703986A MY196874A (en) | 2016-04-29 | 2017-05-02 | Humanized anti-basigin antibodies and the use thereof |
MX2018013176A MX2018013176A (es) | 2016-04-29 | 2017-05-02 | Anticuerpos anti-basigin humanizados y el uso de los mismos. |
KR1020187034365A KR102369118B1 (ko) | 2016-04-29 | 2017-05-02 | 인간화 항-basigin 항체 및 이의 용도 |
MA044777A MA44777A (fr) | 2016-04-29 | 2017-05-02 | Anticorps humanisés anti-basigine et leur utilisation |
PCT/CN2017/082713 WO2017186182A1 (en) | 2016-04-29 | 2017-05-02 | Humanized anti-basigin antibodies and the use thereof |
BR112018072140-9A BR112018072140A2 (pt) | 2016-04-29 | 2017-05-02 | anticorpos anti-basigin humanizados e uso dos mesmos |
CA3022308A CA3022308A1 (en) | 2016-04-29 | 2017-05-02 | Humanized anti-basigin antibodies and the use thereof |
JP2018556501A JP7099709B2 (ja) | 2016-04-29 | 2017-05-02 | ヒト化抗ベイシジン抗体およびその使用 |
PE2018002253A PE20190415A1 (es) | 2016-04-29 | 2017-05-02 | Anticuerpos anti-basigin humanizados y uso de los mismos |
US16/097,274 US20190270809A1 (en) | 2016-04-29 | 2017-05-02 | Humanized anti-basigin antibodies and the use thereof |
CU2018000129A CU24556B1 (es) | 2016-04-29 | 2017-05-02 | Anticuerpos anti-basigin humanizados |
SG11201809473QA SG11201809473QA (en) | 2016-04-29 | 2017-05-02 | Humanized anti-basigin antibodies and the use thereof |
IL262588A IL262588B1 (en) | 2016-04-29 | 2017-05-02 | Humanized anti-basigin antibodies and their uses |
ZA2018/07132A ZA201807132B (en) | 2016-04-29 | 2018-10-25 | Humanized anti-basigin antibodies and the use thereof |
DO2018000234A DOP2018000234A (es) | 2016-04-29 | 2018-10-26 | Anticuerpos anti-basigin humanizados y uso de los mismos |
NI201800113A NI201800113A (es) | 2016-04-29 | 2018-10-29 | Anticuerpos anti-basigin humanizados y uso de los mismos. |
CL2018003072A CL2018003072A1 (es) | 2016-04-29 | 2018-10-29 | Anticuerpos anti-basigin humanizados y uso de los mismos. |
PH12018502293A PH12018502293A1 (en) | 2016-04-29 | 2018-10-29 | Humanized anti-basigin antibodies and the use thereof |
CONC2018/0011663A CO2018011663A2 (es) | 2016-04-29 | 2018-10-29 | Nticuerpos anti-basigin humanizados y uso de los mismos |
ECSENADI201884153A ECSP18084153A (es) | 2016-04-29 | 2018-11-12 | Anticuerpos anti-BASIGIN humanizados y uso de los mismos |
JP2022047763A JP2022084832A (ja) | 2016-04-29 | 2022-03-24 | ヒト化抗ベイシジン抗体およびその使用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610285139.4A CN105820250B (zh) | 2016-04-29 | 2016-04-29 | 一种抗basigin人源化抗体及其应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105820250A true CN105820250A (zh) | 2016-08-03 |
CN105820250B CN105820250B (zh) | 2019-04-30 |
Family
ID=56528099
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610285139.4A Active CN105820250B (zh) | 2016-04-29 | 2016-04-29 | 一种抗basigin人源化抗体及其应用 |
CN201780041146.2A Active CN109476760B (zh) | 2016-04-29 | 2017-05-02 | 人源化抗basigin抗体及其用途 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201780041146.2A Active CN109476760B (zh) | 2016-04-29 | 2017-05-02 | 人源化抗basigin抗体及其用途 |
Country Status (26)
Country | Link |
---|---|
US (1) | US20190270809A1 (zh) |
EP (1) | EP3448892A4 (zh) |
JP (2) | JP7099709B2 (zh) |
KR (1) | KR102369118B1 (zh) |
CN (2) | CN105820250B (zh) |
AU (1) | AU2017255888B2 (zh) |
BR (1) | BR112018072140A2 (zh) |
CA (1) | CA3022308A1 (zh) |
CL (1) | CL2018003072A1 (zh) |
CO (1) | CO2018011663A2 (zh) |
CR (1) | CR20180515A (zh) |
CU (1) | CU24556B1 (zh) |
DO (1) | DOP2018000234A (zh) |
EC (1) | ECSP18084153A (zh) |
IL (1) | IL262588B1 (zh) |
MA (1) | MA44777A (zh) |
MX (1) | MX2018013176A (zh) |
MY (1) | MY196874A (zh) |
NI (1) | NI201800113A (zh) |
PE (1) | PE20190415A1 (zh) |
PH (1) | PH12018502293A1 (zh) |
RU (1) | RU2755150C2 (zh) |
SG (1) | SG11201809473QA (zh) |
TN (1) | TN2018000358A1 (zh) |
WO (1) | WO2017186182A1 (zh) |
ZA (1) | ZA201807132B (zh) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017186182A1 (en) * | 2016-04-29 | 2017-11-02 | Fourth Military Medical University | Humanized anti-basigin antibodies and the use thereof |
CN110964119A (zh) * | 2019-12-05 | 2020-04-07 | 沣潮医药科技(上海)有限公司 | 抗疟二聚体免疫粘附素、药物组合物和用途 |
CN111420048A (zh) * | 2020-03-11 | 2020-07-17 | 中国人民解放军第四军医大学 | 抗basigin人源化抗体用于制备治疗新型冠状病毒肺炎药物的应用 |
CN111690062A (zh) * | 2019-03-14 | 2020-09-22 | 复旦大学 | 针对恶性疟PfRh5靶点的全人源单克隆抗体及应用 |
CN113549152A (zh) * | 2021-07-22 | 2021-10-26 | 中国人民解放军空军军医大学 | 一种抗basigin人源化抗体及其应用 |
WO2023061462A1 (en) * | 2021-10-15 | 2023-04-20 | Jiangsu Pacific Meinuoke Bio-Pharmaceutical Co., Ltd. | Stable pharmaceutical formulation comprising anti-cd147 monoclonal antibody |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MX2020008274A (es) | 2018-02-07 | 2020-11-11 | Regeneron Pharma | Metodos y composiciones para la administracion de proteinas terapeuticas. |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101054416A (zh) * | 2006-06-23 | 2007-10-17 | 陈志南 | HAb18GC2单抗和其轻、重链可变区基因、编码多肽及应用 |
CN101550416A (zh) * | 2008-03-18 | 2009-10-07 | 陈志南 | 人源化单抗Hu-ScFv18的轻、重链可变区基因和其编码多肽及其应用 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL2087002T3 (pl) * | 2006-10-27 | 2015-02-27 | Lpath Inc | Kompozycje i sposoby do wiązania sfingozyno-1 fosforanu |
WO2008144757A1 (en) * | 2007-05-21 | 2008-11-27 | Alder Biopharmaceuticals, Inc. | Novel rabbit antibody humanization methods and humanized rabbit antibodies |
NZ584769A (en) * | 2007-09-28 | 2011-09-30 | Chugai Pharmaceutical Co Ltd | Anti-glypican-3 antibody having improved kinetics in plasma |
US8007808B2 (en) * | 2008-04-04 | 2011-08-30 | The Board Of Trustees Of The Univeristy Of Illinois | Composition and method for facilitating the internalization of a therapeutic agent into a cell |
EP2303325A4 (en) * | 2008-05-23 | 2012-09-19 | Uti Limited Partnership | INHIBITION OF EMMPRIN TO TREAT MULTIPLE SCLEROSIS |
WO2010087743A2 (en) * | 2008-12-30 | 2010-08-05 | Cellartis Ab | The use of a protein in stem cell and cancer applications |
EP2997974B1 (en) * | 2009-06-19 | 2018-06-13 | INSERM (Institut National de la Santé et de la Recherche Médicale) | Method and pharmaceutical composition for use in the treatment of neurodegenerative disorders |
JP5956342B2 (ja) * | 2009-11-03 | 2016-07-27 | シティ・オブ・ホープCity of Hope | 形質導入T細胞選択のためのトランケート上皮増殖因子レセプタ(EGFRt) |
NZ599516A (en) * | 2009-12-10 | 2013-11-29 | Hoffmann La Roche | Antibodies binding preferentially human csf1r extracellular domain 4 and their use |
US20110223176A1 (en) * | 2010-03-11 | 2011-09-15 | Abbott Laboratories | Basigin binding proteins |
CN104086654B (zh) * | 2014-07-04 | 2016-06-08 | 中国人民解放军第四军医大学 | 人源化修饰型抗CD147嵌合抗体HcHAb18及其应用 |
CN105820250B (zh) * | 2016-04-29 | 2019-04-30 | 中国人民解放军第四军医大学 | 一种抗basigin人源化抗体及其应用 |
-
2016
- 2016-04-29 CN CN201610285139.4A patent/CN105820250B/zh active Active
-
2017
- 2017-05-02 MA MA044777A patent/MA44777A/fr unknown
- 2017-05-02 PE PE2018002253A patent/PE20190415A1/es unknown
- 2017-05-02 SG SG11201809473QA patent/SG11201809473QA/en unknown
- 2017-05-02 JP JP2018556501A patent/JP7099709B2/ja active Active
- 2017-05-02 US US16/097,274 patent/US20190270809A1/en active Pending
- 2017-05-02 IL IL262588A patent/IL262588B1/en unknown
- 2017-05-02 CU CU2018000129A patent/CU24556B1/es unknown
- 2017-05-02 BR BR112018072140-9A patent/BR112018072140A2/pt unknown
- 2017-05-02 EP EP17788834.4A patent/EP3448892A4/en active Pending
- 2017-05-02 WO PCT/CN2017/082713 patent/WO2017186182A1/en active Application Filing
- 2017-05-02 MY MYPI2018703986A patent/MY196874A/en unknown
- 2017-05-02 MX MX2018013176A patent/MX2018013176A/es unknown
- 2017-05-02 TN TNP/2018/000358A patent/TN2018000358A1/en unknown
- 2017-05-02 AU AU2017255888A patent/AU2017255888B2/en active Active
- 2017-05-02 CN CN201780041146.2A patent/CN109476760B/zh active Active
- 2017-05-02 CA CA3022308A patent/CA3022308A1/en active Pending
- 2017-05-02 CR CR20180515A patent/CR20180515A/es unknown
- 2017-05-02 RU RU2018138053A patent/RU2755150C2/ru active
- 2017-05-02 KR KR1020187034365A patent/KR102369118B1/ko active IP Right Grant
-
2018
- 2018-10-25 ZA ZA2018/07132A patent/ZA201807132B/en unknown
- 2018-10-26 DO DO2018000234A patent/DOP2018000234A/es unknown
- 2018-10-29 NI NI201800113A patent/NI201800113A/es unknown
- 2018-10-29 CO CONC2018/0011663A patent/CO2018011663A2/es unknown
- 2018-10-29 PH PH12018502293A patent/PH12018502293A1/en unknown
- 2018-10-29 CL CL2018003072A patent/CL2018003072A1/es unknown
- 2018-11-12 EC ECSENADI201884153A patent/ECSP18084153A/es unknown
-
2022
- 2022-03-24 JP JP2022047763A patent/JP2022084832A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101054416A (zh) * | 2006-06-23 | 2007-10-17 | 陈志南 | HAb18GC2单抗和其轻、重链可变区基因、编码多肽及应用 |
CN101550416A (zh) * | 2008-03-18 | 2009-10-07 | 陈志南 | 人源化单抗Hu-ScFv18的轻、重链可变区基因和其编码多肽及其应用 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017186182A1 (en) * | 2016-04-29 | 2017-11-02 | Fourth Military Medical University | Humanized anti-basigin antibodies and the use thereof |
CN111690062A (zh) * | 2019-03-14 | 2020-09-22 | 复旦大学 | 针对恶性疟PfRh5靶点的全人源单克隆抗体及应用 |
CN110964119A (zh) * | 2019-12-05 | 2020-04-07 | 沣潮医药科技(上海)有限公司 | 抗疟二聚体免疫粘附素、药物组合物和用途 |
CN111420048A (zh) * | 2020-03-11 | 2020-07-17 | 中国人民解放军第四军医大学 | 抗basigin人源化抗体用于制备治疗新型冠状病毒肺炎药物的应用 |
WO2021180110A1 (zh) * | 2020-03-11 | 2021-09-16 | 中国人民解放军第四军医大学 | 抗basigin人源化抗体用于制备治疗新型冠状病毒肺炎药物的应用 |
CN111420048B (zh) * | 2020-03-11 | 2023-09-19 | 中国人民解放军第四军医大学 | 抗basigin人源化抗体用于制备治疗新型冠状病毒肺炎药物的应用 |
CN113549152A (zh) * | 2021-07-22 | 2021-10-26 | 中国人民解放军空军军医大学 | 一种抗basigin人源化抗体及其应用 |
CN113549152B (zh) * | 2021-07-22 | 2023-06-20 | 中国人民解放军空军军医大学 | 一种抗basigin人源化抗体及其应用 |
WO2023061462A1 (en) * | 2021-10-15 | 2023-04-20 | Jiangsu Pacific Meinuoke Bio-Pharmaceutical Co., Ltd. | Stable pharmaceutical formulation comprising anti-cd147 monoclonal antibody |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109963591B (zh) | B7h3抗体-药物偶联物及其医药用途 | |
Arezumand et al. | Nanobodies as novel agents for targeting angiogenesis in solid cancers | |
CN105820250A (zh) | 一种抗basigin人源化抗体及其应用 | |
CN105968200A (zh) | 抗人pd-l1人源化单克隆抗体及其应用 | |
CN107151269A (zh) | 一种pdl‑1抗体、其药物组合物及其用途 | |
CN108848669A (zh) | Ror1抗体组合物和相关方法 | |
CN107955071A (zh) | 人源抗人cd47抗体及其编码基因与应用 | |
JP7056858B2 (ja) | 新規な組換え型二機能性融合タンパク質、その調製方法および用途 | |
CN105777906A (zh) | 抗pd-l1全人抗体及其应用 | |
Majidi et al. | Target therapy of cancer: implementation of monoclonal antibodies and nanobodies | |
Behar et al. | Llama single‐domain antibodies directed against nonconventional epitopes of tumor‐associated carcinoembryonic antigen absent from nonspecific cross‐reacting antigen | |
WO2021213435A1 (zh) | 一种靶向人程序性死亡配体1(pd-l1)的单可变域抗体及其衍生物 | |
CN113412281B (zh) | Btn3a结合蛋白及其用途 | |
TWI788698B (zh) | 抗pd-l1抗體及其應用 | |
TWI788788B (zh) | 標靶EpCAM的抗體及其製備和應用 | |
CN110642947B (zh) | 抗人cd147的单克隆抗体、表达载体、细胞株及其应用 | |
CN105828841A (zh) | 抗-efna4抗体-药物缀合物 | |
US20240239878A1 (en) | Binding molecule against dll3 and use thereof | |
EP4406970A1 (en) | Monoclonal antibody targeting tigit | |
CN113549152B (zh) | 一种抗basigin人源化抗体及其应用 | |
WO2022237897A1 (zh) | 一种抗pd-l1单域抗体及其衍生蛋白 | |
CN114805580B (zh) | 靶向人lilrb2的纳米抗体及其应用 | |
CN114685655B (zh) | Pd-1结合分子及其应用 | |
WO2022268168A1 (zh) | 靶向lag-3和pd-l1的新型双特异抗体及其应用 | |
CN118085092A (zh) | 分离的抗人Claudin18.2抗体及其应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |