WO2019129047A1 - 一种cd40双向激活共刺激分子受体及其用途 - Google Patents
一种cd40双向激活共刺激分子受体及其用途 Download PDFInfo
- Publication number
- WO2019129047A1 WO2019129047A1 PCT/CN2018/123859 CN2018123859W WO2019129047A1 WO 2019129047 A1 WO2019129047 A1 WO 2019129047A1 CN 2018123859 W CN2018123859 W CN 2018123859W WO 2019129047 A1 WO2019129047 A1 WO 2019129047A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cancer
- cell
- recombinant
- cells
- egfr
- Prior art date
Links
- 230000000139 costimulatory effect Effects 0.000 title claims abstract description 33
- 230000002457 bidirectional effect Effects 0.000 title abstract description 8
- 210000001744 T-lymphocyte Anatomy 0.000 claims abstract description 94
- 102100040245 Tumor necrosis factor receptor superfamily member 5 Human genes 0.000 claims abstract description 53
- 101150013553 CD40 gene Proteins 0.000 claims abstract description 52
- 230000003834 intracellular effect Effects 0.000 claims abstract description 41
- 108010076504 Protein Sorting Signals Proteins 0.000 claims abstract description 40
- 210000004027 cell Anatomy 0.000 claims description 205
- 102000052116 epidermal growth factor receptor activity proteins Human genes 0.000 claims description 137
- 108700015053 epidermal growth factor receptor activity proteins Proteins 0.000 claims description 137
- YOHYSYJDKVYCJI-UHFFFAOYSA-N n-[3-[[6-[3-(trifluoromethyl)anilino]pyrimidin-4-yl]amino]phenyl]cyclopropanecarboxamide Chemical compound FC(F)(F)C1=CC=CC(NC=2N=CN=C(NC=3C=C(NC(=O)C4CC4)C=CC=3)C=2)=C1 YOHYSYJDKVYCJI-UHFFFAOYSA-N 0.000 claims description 137
- 108010019670 Chimeric Antigen Receptors Proteins 0.000 claims description 100
- 239000013598 vector Substances 0.000 claims description 84
- 206010028980 Neoplasm Diseases 0.000 claims description 73
- 201000011510 cancer Diseases 0.000 claims description 58
- 150000007523 nucleic acids Chemical class 0.000 claims description 37
- 229920001184 polypeptide Polymers 0.000 claims description 35
- 108090000765 processed proteins & peptides Proteins 0.000 claims description 35
- 102000004196 processed proteins & peptides Human genes 0.000 claims description 35
- 108091033319 polynucleotide Proteins 0.000 claims description 33
- 102000040430 polynucleotide Human genes 0.000 claims description 33
- 239000002157 polynucleotide Substances 0.000 claims description 33
- 150000001413 amino acids Chemical class 0.000 claims description 30
- 101000914514 Homo sapiens T-cell-specific surface glycoprotein CD28 Proteins 0.000 claims description 28
- 102100027213 T-cell-specific surface glycoprotein CD28 Human genes 0.000 claims description 28
- 102000039446 nucleic acids Human genes 0.000 claims description 25
- 108020004707 nucleic acids Proteins 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 23
- 206010009944 Colon cancer Diseases 0.000 claims description 20
- 102000004127 Cytokines Human genes 0.000 claims description 20
- 108090000695 Cytokines Proteins 0.000 claims description 20
- 208000029742 colonic neoplasm Diseases 0.000 claims description 17
- 206010033128 Ovarian cancer Diseases 0.000 claims description 15
- 206010061535 Ovarian neoplasm Diseases 0.000 claims description 15
- 230000014509 gene expression Effects 0.000 claims description 15
- 108091028043 Nucleic acid sequence Proteins 0.000 claims description 13
- 102100034922 T-cell surface glycoprotein CD8 alpha chain Human genes 0.000 claims description 13
- 230000028327 secretion Effects 0.000 claims description 13
- 206010008342 Cervix carcinoma Diseases 0.000 claims description 12
- 208000006105 Uterine Cervical Neoplasms Diseases 0.000 claims description 12
- 201000010881 cervical cancer Diseases 0.000 claims description 12
- 206010006187 Breast cancer Diseases 0.000 claims description 11
- 208000026310 Breast neoplasm Diseases 0.000 claims description 11
- 206010058467 Lung neoplasm malignant Diseases 0.000 claims description 11
- 206010061902 Pancreatic neoplasm Diseases 0.000 claims description 11
- 206010060862 Prostate cancer Diseases 0.000 claims description 11
- 208000000236 Prostatic Neoplasms Diseases 0.000 claims description 11
- 238000000338 in vitro Methods 0.000 claims description 11
- 201000005202 lung cancer Diseases 0.000 claims description 11
- 208000020816 lung neoplasm Diseases 0.000 claims description 11
- 208000015486 malignant pancreatic neoplasm Diseases 0.000 claims description 11
- 201000002528 pancreatic cancer Diseases 0.000 claims description 11
- 208000008443 pancreatic carcinoma Diseases 0.000 claims description 11
- 208000000461 Esophageal Neoplasms Diseases 0.000 claims description 10
- 208000022072 Gallbladder Neoplasms Diseases 0.000 claims description 10
- 206010030155 Oesophageal carcinoma Diseases 0.000 claims description 10
- 208000005718 Stomach Neoplasms Diseases 0.000 claims description 10
- 208000009956 adenocarcinoma Diseases 0.000 claims description 10
- 208000006990 cholangiocarcinoma Diseases 0.000 claims description 10
- 201000004101 esophageal cancer Diseases 0.000 claims description 10
- 201000010175 gallbladder cancer Diseases 0.000 claims description 10
- 206010017758 gastric cancer Diseases 0.000 claims description 10
- 201000011549 stomach cancer Diseases 0.000 claims description 10
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 9
- 239000003446 ligand Substances 0.000 claims description 9
- 108010074328 Interferon-gamma Proteins 0.000 claims description 8
- 102000003814 Interleukin-10 Human genes 0.000 claims description 8
- 108090000174 Interleukin-10 Proteins 0.000 claims description 8
- 108010002350 Interleukin-2 Proteins 0.000 claims description 8
- 102000000588 Interleukin-2 Human genes 0.000 claims description 8
- 102000004388 Interleukin-4 Human genes 0.000 claims description 8
- 108090000978 Interleukin-4 Proteins 0.000 claims description 8
- 102100022153 Tumor necrosis factor receptor superfamily member 4 Human genes 0.000 claims description 8
- MZOFCQQQCNRIBI-VMXHOPILSA-N (3s)-4-[[(2s)-1-[[(2s)-1-[[(1s)-1-carboxy-2-hydroxyethyl]amino]-4-methyl-1-oxopentan-2-yl]amino]-5-(diaminomethylideneamino)-1-oxopentan-2-yl]amino]-3-[[2-[[(2s)-2,6-diaminohexanoyl]amino]acetyl]amino]-4-oxobutanoic acid Chemical compound OC[C@@H](C(O)=O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@@H](N)CCCCN MZOFCQQQCNRIBI-VMXHOPILSA-N 0.000 claims description 7
- 102100037850 Interferon gamma Human genes 0.000 claims description 7
- 102000004889 Interleukin-6 Human genes 0.000 claims description 7
- 108090001005 Interleukin-6 Proteins 0.000 claims description 7
- 108060008682 Tumor Necrosis Factor Proteins 0.000 claims description 7
- 239000003814 drug Substances 0.000 claims description 7
- 210000003819 peripheral blood mononuclear cell Anatomy 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 230000001737 promoting effect Effects 0.000 claims description 6
- 238000001727 in vivo Methods 0.000 claims description 5
- 230000002401 inhibitory effect Effects 0.000 claims description 5
- 238000011282 treatment Methods 0.000 claims description 5
- 102100029360 Hematopoietic cell signal transducer Human genes 0.000 claims description 4
- 101000990188 Homo sapiens Hematopoietic cell signal transducer Proteins 0.000 claims description 4
- 239000013604 expression vector Substances 0.000 claims description 4
- FWMNVWWHGCHHJJ-SKKKGAJSSA-N 4-amino-1-[(2r)-6-amino-2-[[(2r)-2-[[(2r)-2-[[(2r)-2-amino-3-phenylpropanoyl]amino]-3-phenylpropanoyl]amino]-4-methylpentanoyl]amino]hexanoyl]piperidine-4-carboxylic acid Chemical compound C([C@H](C(=O)N[C@H](CC(C)C)C(=O)N[C@H](CCCCN)C(=O)N1CCC(N)(CC1)C(O)=O)NC(=O)[C@H](N)CC=1C=CC=CC=1)C1=CC=CC=C1 FWMNVWWHGCHHJJ-SKKKGAJSSA-N 0.000 claims description 3
- 208000001333 Colorectal Neoplasms Diseases 0.000 claims description 3
- 101710165473 Tumor necrosis factor receptor superfamily member 4 Proteins 0.000 claims description 3
- 238000003259 recombinant expression Methods 0.000 claims description 3
- 108010029697 CD40 Ligand Proteins 0.000 claims description 2
- 102100032937 CD40 ligand Human genes 0.000 claims description 2
- 108091026890 Coding region Proteins 0.000 claims description 2
- 102000018697 Membrane Proteins Human genes 0.000 claims description 2
- 108010052285 Membrane Proteins Proteins 0.000 claims description 2
- 240000007019 Oxalis corniculata Species 0.000 claims description 2
- 239000002671 adjuvant Substances 0.000 claims description 2
- 239000013599 cloning vector Substances 0.000 claims description 2
- 239000013613 expression plasmid Substances 0.000 claims description 2
- 210000004962 mammalian cell Anatomy 0.000 claims description 2
- 239000008194 pharmaceutical composition Substances 0.000 claims description 2
- 230000011664 signaling Effects 0.000 claims description 2
- 239000013603 viral vector Substances 0.000 claims description 2
- 125000003275 alpha amino acid group Chemical group 0.000 claims 8
- 102000000852 Tumor Necrosis Factor-alpha Human genes 0.000 claims 3
- 230000002159 abnormal effect Effects 0.000 claims 3
- 230000002265 prevention Effects 0.000 claims 1
- 210000004881 tumor cell Anatomy 0.000 abstract description 25
- 230000004913 activation Effects 0.000 abstract description 23
- 108020003175 receptors Proteins 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 16
- 230000028993 immune response Effects 0.000 abstract description 3
- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- 230000001960 triggered effect Effects 0.000 abstract 1
- 239000013612 plasmid Substances 0.000 description 22
- 230000006870 function Effects 0.000 description 20
- 239000000427 antigen Substances 0.000 description 18
- 108091007433 antigens Proteins 0.000 description 18
- 102000036639 antigens Human genes 0.000 description 18
- 238000004520 electroporation Methods 0.000 description 15
- 230000002147 killing effect Effects 0.000 description 15
- 230000035755 proliferation Effects 0.000 description 15
- 102000005962 receptors Human genes 0.000 description 15
- 230000006044 T cell activation Effects 0.000 description 14
- 108090000623 proteins and genes Proteins 0.000 description 13
- 210000002865 immune cell Anatomy 0.000 description 8
- 230000003213 activating effect Effects 0.000 description 7
- 230000004663 cell proliferation Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 7
- 239000000523 sample Substances 0.000 description 7
- 239000006228 supernatant Substances 0.000 description 7
- 230000001225 therapeutic effect Effects 0.000 description 7
- OUYCCCASQSFEME-QMMMGPOBSA-N L-tyrosine Chemical compound OC(=O)[C@@H](N)CC1=CC=C(O)C=C1 OUYCCCASQSFEME-QMMMGPOBSA-N 0.000 description 6
- OUYCCCASQSFEME-UHFFFAOYSA-N tyrosine Natural products OC(=O)C(N)CC1=CC=C(O)C=C1 OUYCCCASQSFEME-UHFFFAOYSA-N 0.000 description 6
- 241000699670 Mus sp. Species 0.000 description 5
- 102100040247 Tumor necrosis factor Human genes 0.000 description 5
- 230000003915 cell function Effects 0.000 description 5
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 201000010099 disease Diseases 0.000 description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002504 physiological saline solution Substances 0.000 description 5
- 230000000638 stimulation Effects 0.000 description 5
- 230000004083 survival effect Effects 0.000 description 5
- 102100036301 C-C chemokine receptor type 7 Human genes 0.000 description 4
- 101000716065 Homo sapiens C-C chemokine receptor type 7 Proteins 0.000 description 4
- 101001018097 Homo sapiens L-selectin Proteins 0.000 description 4
- 102100033467 L-selectin Human genes 0.000 description 4
- 241001465754 Metazoa Species 0.000 description 4
- 238000002659 cell therapy Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000012636 effector Substances 0.000 description 4
- 102000001301 EGF receptor Human genes 0.000 description 3
- 230000006052 T cell proliferation Effects 0.000 description 3
- 241000700605 Viruses Species 0.000 description 3
- 238000011467 adoptive cell therapy Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 101150058049 car gene Proteins 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000684 flow cytometry Methods 0.000 description 3
- 230000001976 improved effect Effects 0.000 description 3
- 239000000546 pharmaceutical excipient Substances 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 230000006798 recombination Effects 0.000 description 3
- 238000005215 recombination Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 108020004414 DNA Proteins 0.000 description 2
- 108060006698 EGF receptor Proteins 0.000 description 2
- 102100022132 High affinity immunoglobulin epsilon receptor subunit gamma Human genes 0.000 description 2
- 108091010847 High affinity immunoglobulin epsilon receptor subunit gamma Proteins 0.000 description 2
- 102000008394 Immunoglobulin Fragments Human genes 0.000 description 2
- 108010021625 Immunoglobulin Fragments Proteins 0.000 description 2
- 241000699666 Mus <mouse, genus> Species 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 108010083312 T-Cell Antigen Receptor-CD3 Complex Proteins 0.000 description 2
- 210000004436 artificial bacterial chromosome Anatomy 0.000 description 2
- 210000004507 artificial chromosome Anatomy 0.000 description 2
- 210000001106 artificial yeast chromosome Anatomy 0.000 description 2
- 230000000981 bystander Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 238000004113 cell culture Methods 0.000 description 2
- 239000006285 cell suspension Substances 0.000 description 2
- 230000007969 cellular immunity Effects 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 230000007783 downstream signaling Effects 0.000 description 2
- 238000001962 electrophoresis Methods 0.000 description 2
- 239000003623 enhancer Substances 0.000 description 2
- 210000002950 fibroblast Anatomy 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 210000004498 neuroglial cell Anatomy 0.000 description 2
- 239000003002 pH adjusting agent Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004936 stimulating effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000011534 wash buffer Substances 0.000 description 2
- 102000007469 Actins Human genes 0.000 description 1
- 108010085238 Actins Proteins 0.000 description 1
- 101100067974 Arabidopsis thaliana POP2 gene Proteins 0.000 description 1
- 241000228212 Aspergillus Species 0.000 description 1
- 244000063299 Bacillus subtilis Species 0.000 description 1
- 235000014469 Bacillus subtilis Nutrition 0.000 description 1
- 241000283707 Capra Species 0.000 description 1
- 201000009030 Carcinoma Diseases 0.000 description 1
- 241000702421 Dependoparvovirus Species 0.000 description 1
- 239000006144 Dulbecco’s modified Eagle's medium Substances 0.000 description 1
- 101150039808 Egfr gene Proteins 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 241000701959 Escherichia virus Lambda Species 0.000 description 1
- 241001524679 Escherichia virus M13 Species 0.000 description 1
- 108700028146 Genetic Enhancer Elements Proteins 0.000 description 1
- 102100031181 Glyceraldehyde-3-phosphate dehydrogenase Human genes 0.000 description 1
- 101100118549 Homo sapiens EGFR gene Proteins 0.000 description 1
- 101001002657 Homo sapiens Interleukin-2 Proteins 0.000 description 1
- 101000611183 Homo sapiens Tumor necrosis factor Proteins 0.000 description 1
- 208000008839 Kidney Neoplasms Diseases 0.000 description 1
- 241000713666 Lentivirus Species 0.000 description 1
- 102000043129 MHC class I family Human genes 0.000 description 1
- 108091054437 MHC class I family Proteins 0.000 description 1
- 241000124008 Mammalia Species 0.000 description 1
- 206010027476 Metastases Diseases 0.000 description 1
- 241001631646 Papillomaviridae Species 0.000 description 1
- 238000011529 RT qPCR Methods 0.000 description 1
- 206010038389 Renal cancer Diseases 0.000 description 1
- 108700008625 Reporter Genes Proteins 0.000 description 1
- 101100123851 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) HER1 gene Proteins 0.000 description 1
- 241000700584 Simplexvirus Species 0.000 description 1
- 102000004142 Trypsin Human genes 0.000 description 1
- 108090000631 Trypsin Proteins 0.000 description 1
- 206010064390 Tumour invasion Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 230000000735 allogeneic effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003698 anagen phase Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000033115 angiogenesis Effects 0.000 description 1
- 210000004102 animal cell Anatomy 0.000 description 1
- 238000010171 animal model Methods 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008827 biological function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009400 cancer invasion Effects 0.000 description 1
- 238000010523 cascade reaction Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 230000020411 cell activation Effects 0.000 description 1
- 230000024245 cell differentiation Effects 0.000 description 1
- 230000010261 cell growth Effects 0.000 description 1
- 239000013592 cell lysate Substances 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 238000003570 cell viability assay Methods 0.000 description 1
- 238000012054 celltiter-glo Methods 0.000 description 1
- 210000004978 chinese hamster ovary cell Anatomy 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000003501 co-culture Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003937 drug carrier Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000002919 epithelial cell Anatomy 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000002538 fungal effect Effects 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 108020004445 glyceraldehyde-3-phosphate dehydrogenase Proteins 0.000 description 1
- 210000005260 human cell Anatomy 0.000 description 1
- 210000000987 immune system Anatomy 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 210000002510 keratinocyte Anatomy 0.000 description 1
- 201000010982 kidney cancer Diseases 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000012160 loading buffer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009401 metastasis Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010369 molecular cloning Methods 0.000 description 1
- 230000006654 negative regulation of apoptotic process Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000002773 nucleotide Substances 0.000 description 1
- 125000003729 nucleotide group Chemical group 0.000 description 1
- 230000002018 overexpression Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000008363 phosphate buffer Substances 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 230000004815 positive regulation of T cell activation Effects 0.000 description 1
- 210000001236 prokaryotic cell Anatomy 0.000 description 1
- 230000002062 proliferating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 230000003248 secreting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000019491 signal transduction Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000005026 transcription initiation Effects 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
- 238000001890 transfection Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
- 239000012588 trypsin Substances 0.000 description 1
- 241000701161 unidentified adenovirus Species 0.000 description 1
- 241000701447 unidentified baculovirus Species 0.000 description 1
- 241001529453 unidentified herpesvirus Species 0.000 description 1
- 241001430294 unidentified retrovirus Species 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
- 230000009385 viral infection Effects 0.000 description 1
- 230000003612 virological effect Effects 0.000 description 1
- 238000001262 western blot Methods 0.000 description 1
- 210000005253 yeast cell Anatomy 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/14—Blood; Artificial blood
- A61K35/17—Lymphocytes; B-cells; T-cells; Natural killer cells; Interferon-activated or cytokine-activated lymphocytes
-
- 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
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
- C07K14/70503—Immunoglobulin superfamily
- C07K14/7051—T-cell receptor (TcR)-CD3 complex
-
- 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
- C07K16/2863—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against receptors for growth factors, growth regulators
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K19/00—Hybrid peptides, i.e. peptides covalently bound to nucleic acids, or non-covalently bound protein-protein complexes
-
- 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
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
- C12N15/62—DNA sequences coding for fusion proteins
-
- 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
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
-
- 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
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/10—Cells modified by introduction of foreign genetic material
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2319/00—Fusion polypeptide
- C07K2319/01—Fusion polypeptide containing a localisation/targetting motif
- C07K2319/02—Fusion polypeptide containing a localisation/targetting motif containing a signal sequence
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2319/00—Fusion polypeptide
- C07K2319/33—Fusion polypeptide fusions for targeting to specific cell types, e.g. tissue specific targeting, targeting of a bacterial subspecies
-
- 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
- C12N2510/00—Genetically modified cells
Definitions
- the invention belongs to the field of cell biology and immunology, and relates to a CD40 bidirectional activated costimulatory molecule receptor, and the use thereof for modifying a T cell modified by the receptor for treating a malignant tumor.
- Chimeric antigen receptors activate the intracellular signal CD3 ⁇ or Fc ⁇ RI ⁇ by ITAM (immunoreceptor tyrosine-based activation) by specifically recognizing the single-chain antibody fragment (scFv) of the tumor antigen. Moments.) Signal transmission.
- ITAM immunoglobulin-associated antigen
- scFv single-chain antibody fragment
- the first-generation CAR receptor lacks the costimulatory signal of T cells, which leads to T cells only exerting transient effects, short time in the body and less secretion of cytokines.
- CAR-T cells can only provide stimulation signals to the modified T cells, lack of bystander function, and can not activate surrounding T cells, resulting in a stronger cluster effect, resulting in a series of activated T cell functions. Cascade reaction.
- the modified T cells can not only activate their own CD40 costimulatory molecules through extracellular CD40-activated antibodies, but also activate the intracellular cells of the contacted T cells by contact with surrounding unmodified activated T cells.
- the costimulatory molecule signals promote T cell activation, proliferation and survival.
- when it co-modifies T cells with the first generation CAR-T containing the first signal it can produce a strong cluster effect and kill tumor cells.
- the effect of this two-way activation is only limited to the T cells that are in contact with each other, and does not cause strong T cell immunity like the activated antibody injected with CD40, causing potentially serious side effects.
- One aspect of the invention relates to an isolated polypeptide comprising, in order from the N-terminus to the C-terminus, the following elements:
- An alternative signal peptide a polypeptide that activates CD40 (eg, a CD40 activated single chain antibody or a ligand for CD40), an extracellular hinge region, a transmembrane region, and an intracellular costimulatory signaling molecule.
- the polypeptide is characterized by any one, two, three, four or five of the following items (1) to (5):
- the transmembrane region is one selected from the group consisting of a CD28 transmembrane region, a CD8 transmembrane region, a CD3 ⁇ transmembrane region, a CD134 transmembrane region, a CD137 transmembrane region, an ICOS transmembrane region, and a DAP10 transmembrane region.
- the intracellular costimulatory signal molecule is selected from the group consisting of a CD28 intracellular domain, a CD134/OX40 intracellular domain, a CD137/4-1BB intracellular domain, an LCK intracellular domain, an ICOS intracellular domain, and DAP10.
- One or more of the intracellular domains preferably, the intracellular costimulatory signal molecule is a CD28 intracellular domain and/or a CD137 intracellular domain; preferably, the amino acid of the CD28 intracellular domain
- the sequence is set forth in SEQ ID NO: 5; preferably, the amino acid sequence of the intracellular domain of CD137 is set forth in SEQ ID NO: 6.
- polypeptide is as shown in Figures 1A-1D.
- the polypeptide has an amino acid sequence as set forth in any one of SEQ ID NO: 7 to SEQ ID NO: 14.
- Another aspect of the invention relates to an isolated polynucleotide encoding the isolated polypeptide of any of the invention; preferably, the sequence of the isolated polynucleotide is SEQ ID NO: 15 to SEQ ID NO: 22 is shown in any of the sequences.
- a further aspect of the present invention relates to a recombinant vector comprising the polynucleotide of the present invention or the nucleic acid construct of the present invention; preferably, the recombinant vector is a recombinant cloning vector, a recombinant eukaryotic expression plasmid or a recombinant viral vector;
- the recombinant expression vector is a recombinant transposon vector; preferably, the transposon vector contains a transposable element selected from the group consisting of piggybac, sleeping beauty, frog prince, Tn5 or Ty; preferably, the recombination
- the expression vector is a recombinant vector obtained by recombining the polynucleotide of the present invention and the PS328b vector.
- the first recombinant vector is a recombinant vector of the present invention
- the second recombinant vector contains a coding sequence for a first generation chimeric antigen receptor; preferably, the first generation chimeric antigen receptor is a first generation chimeric antigen receptor that targets EGFR; preferably, The amino acid sequence of the first generation chimeric antigen receptor is set forth in SEQ ID NO: 23; preferably, the nucleic acid sequence of the first generation chimeric antigen receptor is as set forth in SEQ ID NO:24;
- the second recombinant vector is a recombinant pNB328B vector.
- first and second in the above “first recombination vector” and “second recombination vector” are merely for the purpose of distinction and do not have the meaning of order.
- the bidirectionally activated costimulatory molecule receptors of the invention can also be used in conjunction with first generation chimeric antigen receptors.
- a further aspect of the invention relates to a T cell expressing a polypeptide according to any of the preceding claims, and a first generation chimeric antigen receptor; preferably, the recombinant T cell is recombinant peripheral blood Mononuclear cells; preferably, the first generation chimeric antigen receptor is a first generation chimeric antigen receptor that targets EGFR; preferably, the amino acid sequence of the first generation chimeric antigen receptor is SEQ ID NO: 23 is shown.
- a further aspect of the present invention relates to a pharmaceutical composition
- a pharmaceutical composition comprising the polypeptide of any one of the present invention, the polynucleotide of the present invention, the nucleic acid construct of the present invention, the recombinant vector of the present invention, and the present invention
- a further aspect of the invention relates to the polypeptide of any one of the invention, the polynucleotide of the invention, the nucleic acid construct of the invention, the recombinant vector of the invention, the recombinant vector combination of the invention, the recombinant host of the invention
- a cell or a T cell of the present invention for the preparation of a medicament for treating and/or preventing cancer;
- the cancer is a cancer whose surface of the cancer cell abnormally expresses EGFR;
- the cancer is selected from the group consisting of: adenocarcinoma, Lung cancer, colon cancer, colon cancer, breast cancer, ovarian cancer, cervical cancer, stomach cancer, cholangiocarcinoma, gallbladder cancer, esophageal cancer, pancreatic cancer or prostate cancer.
- a further aspect of the invention relates to the polypeptide of any one of the invention, the polynucleotide of the invention, the nucleic acid construct of the invention, the recombinant vector of the invention, the recombinant vector combination of the invention, the recombinant host of the invention
- a cell or a T cell of the present invention for the preparation of a medicament for inhibiting cancer cells;
- the cancer cell is a cancer cell whose cell surface abnormally expresses EGFR;
- the cancer cell is selected from a cancer cell of the following cancer: Adenocarcinoma, lung cancer, colon cancer, colorectal cancer, breast cancer, ovarian cancer, cervical cancer, gastric cancer, cholangiocarcinoma, gallbladder cancer, esophageal cancer, pancreatic cancer or prostate cancer.
- a further aspect of the invention relates to the polypeptide of any one of the invention, the polynucleotide of the invention, the nucleic acid construct of the invention, the recombinant vector of the invention, the recombinant vector combination of the invention, the recombinant host of the invention
- the term “isolated” or “isolated” refers to that obtained by artificial means from a natural state. If a certain “separated” substance or component appears in nature, it may be that the natural environment in which it is located has changed, or that it has been isolated from the natural environment, or both. For example, a certain living animal has a naturally isolated polynucleotide or polypeptide that is not isolated, and the high purity of the same polynucleotide or polypeptide isolated from this natural state is called separation. of.
- the term “isolated” or “isolated” does not exclude the inclusion of artificial or synthetic materials, nor does it exclude the presence of other impure substances that do not affect the activity of the material.
- Phage such as lambda phage or M13 phage and animal virus.
- Animal viruses useful as vectors include, but are not limited to, retroviruses (including lentiviruses), adenoviruses, adeno-associated viruses, herpes viruses (such as herpes simplex virus), poxviruses, baculoviruses, papillomaviruses, nipples Multi-tumor vacuolar virus (such as SV40).
- a vector may contain a variety of elements that control expression, including, but not limited to, promoter sequences, transcription initiation sequences, enhancer sequences, selection elements, and reporter genes. In addition, the vector may also contain an origin of replication.
- CD40 the official ID number of the NCBI gene bank is 958, expressed in T cells, and promotes proliferation and activation of T cells.
- CD40 the official ID number of the NCBI gene bank is 958, expressed in T cells, and promotes proliferation and activation of T cells.
- it is often used as an intracellular costimulatory signal to enhance the activation and proliferation of T cells.
- CD28 the official ID number of the NCBI gene bank is 940, expressed in T cells, and promotes proliferation and activation of T cells.
- CD28 the official ID number of the NCBI gene bank is 940, expressed in T cells, and promotes proliferation and activation of T cells.
- it is often used as an intracellular costimulatory signal to enhance the activation and proliferation of T cells.
- CD137 the official ID number of the NCBI gene bank is 3604, expressed in T cells, and promotes proliferation and activation of T cells.
- it is often used as an intracellular costimulatory signal to enhance the activation and proliferation of T cells.
- single-chain antibody variable fragment refers to an antibody fragment having the ability to bind antigen by linking the amino acid sequence of the VL region of the antibody and the amino acid sequence of the VH region via Linker.
- V L and V H domains by a linker makes it possible to produce a single polypeptide chain pair to form monovalent molecules (see, e.g., Bird et al., Science 242: 423-426 (1988) and Huston et al., Proc. Natl .Acad.Sci. USA 85: 5879-5883 (1988)).
- the immunoreceptor tyrosine activating motif is a tyrosine activating motif of CD3 ⁇ and/or Fc ⁇ RI ⁇ ; preferably, the immunoreceptor tyrosine activating motif is a CD3 ⁇ tyrosine activating group
- the amino acid sequence of the sequence is shown in SEQ ID NO: 25.
- co-stimulating molecule in the present invention means some adhesion molecules on the surface of an immune cell, such as CD28, CD134/OX40, CD137/4-1BB, CD40, etc., activated by binding to its ligand.
- the second signal of immune cells enhances the proliferative capacity of immune cells and the secretory function of cytokines, prolonging the survival time of activated immune cells.
- PB transposon is an abbreviation for Piggybac.
- a transposon is a mobile genetic factor.
- a DNA sequence can be replicated or fragmented separately from the in situ, cyclized and inserted into another site, and the subsequent genes are regulated. This process is called transposition. Since the transposon on the vector functions, EGFR G1CAR, 137DCR are integrated into the T cell genome.
- Antibodies are classified into activated and blocked antibodies.
- the term "extracellular activated antibody” binds an antibody to the surface of a cell membrane and binds to a site of action of a cell surface molecule (i.e., a ligand and a receptor binding site) to promote a biological function of the cell.
- CD40 extracellular activated antibody because CD40 molecule is present on the surface of most T cells, is considered to be a T cell-specific surface molecule, CD40 extracellular activated antibody can effectively recognize and activate CD40 molecular signal, generate a second signal, CD40 can replace the second signal of APC.
- the term "bystander function" means that when a tumor cell or a virus-infected cell, a single CAR-T cell can only activate the second signal of the self cell, and cannot further activate the peripheral T cell function, resulting in surrounding T cells. Can not cause a series of activated T cell function.
- the term "cluster effect” means that a single modified T cell can continuously recruit and activate surrounding unactivated T cells, and activate peripheral T cell downstream signaling pathways, causing activation and proliferation of multiple T cell levels. .
- EGFR also known as epidermal growth factor receptor, ErbB-1 or HER1, epidermal growth factor receptor
- EGFR is widely distributed on the surface of mammalian epithelial cells, fibroblasts, glial cells, keratinocytes, etc.
- EGFR signaling pathway plays an important role in the physiological processes such as cell growth, proliferation and differentiation.
- EGFR is involved in tumor cell proliferation, angiogenesis, tumor invasion, metastasis, and inhibition of apoptosis.
- Overexpression of EGFR plays an important role in the progression of malignant tumors, such as glial cell carcinoma, kidney cancer, lung cancer, prostate cancer, pancreatic cancer, and breast cancer.
- the term "pharmaceutically acceptable carrier and/or excipient” means a carrier and/or excipient which is pharmacologically and/or physiologically compatible with the subject and the active ingredient, which is It is well known in the art (see, for example, Remington's Pharmaceutical Sciences. Edited by Gennaro AR, 19th ed. Pennsylvania: Mack Publishing Company, 1995), and includes, but is not limited to, pH adjusting agents, surfactants, adjuvants, ionic strength enhancers.
- pH adjusting agents include, but are not limited to, phosphate buffers; surfactants include, but are not limited to, cationic, anionic or nonionic surfactants such as Tween-80; ionic strength enhancers include, but are not limited to, sodium chloride.
- an effective amount means an amount sufficient to obtain or at least partially obtain a desired effect.
- an effective amount to prevent a disease refers to an amount sufficient to prevent, prevent, or delay the onset of a disease (eg, a tumor); treating an effective amount of the disease means sufficient to cure or at least partially arrest a patient already suffering from the disease.
- the amount of disease and its complications Determination of such an effective amount is well within the capabilities of those skilled in the art.
- the amount effective for therapeutic use will depend on the severity of the condition to be treated, the overall condition of the patient's own immune system, the general condition of the patient such as age, weight and sex, the mode of administration of the drug, and other treatments for simultaneous administration. and many more.
- the subject may be a mammal, such as a human.
- the CD40 bi-directional costimulatory molecule activating receptor provided by the invention combined with the chimeric antigen receptor-modified T cell of EGFR can specifically kill tumor cell lines with high expression of EGFR, and is superior to EGFR first generation and second generation CAR-. T, at the same time, has little or no killing effect on tumor cell lines which are not expressed, and has high efficiency and high specificity.
- the present invention can maintain the first-generation and second-generation CAR efficacy, and the CD40 bi-directional costimulatory molecule-activated receptor-activated T cell can activate the second signal of the self-cell T cell, and the stronger the tumor-specific antigen is, the first The stronger the activation of the signal CD3 ⁇ , the stronger the second signal associated with the activation of T cell activation by the CD40 extracellular activating antibody, which accumulates around the tumor and continuously recruits and activates surrounding unactivated T cells and activates T.
- the downstream signaling pathway of the cell causes activation, proliferation and survival of the T cell cascade.
- Figure 1A Schematic representation of the structure of CD40 bidirectionally activated costimulatory molecule receptor 40DCR1.
- Figure 1C Schematic representation of the structure of CD40 bidirectionally activated costimulatory molecule receptor 40DCR3.
- Figure 1D Schematic representation of the structure of CD40 bidirectionally activated costimulatory molecule receptor 40DCR4.
- Figure 1F Schematic diagram of the EGFR G2 CAR structure.
- Figure 2A Expression of CD3 ⁇ in a bidirectionally activated chimeric antigen receptor EGFR CAR-T cell.
- the internal reference is GADPH.
- Figure 4 Two-way activation of chimeric antigen receptor EGFR CAR-T cells, cell proliferation curve.
- FIG. 5C Electroporation 40DCR2 function, CD40 phenotype of recombinant cell 40DCR2.
- the abscissa is the fluorescence intensity of a single CD40-positive cell
- the ordinate is the number of cells with different fluorescence intensities.
- FIG. 5D Electroporation 40DCR3 function, CD40 phenotype of recombinant cell 40DCR3.
- the abscissa is the fluorescence intensity of a single CD40-positive cell, and the ordinate is the number of cells with different fluorescence intensities.
- Figure 7A The function of electroporation 40DCR2 in combination with EGFR G1 CAR, the CD45RO phenotype of Mock T.
- the abscissa is the fluorescence intensity of a single CD45RO-positive cell
- the ordinate is the number of cells with different fluorescence intensities.
- Figure 7C The function of electroporation 40DCR2 in combination with EGFR G1 CAR, the CD45RO phenotype of recombinant cell EGFR G2 CAR.
- the abscissa is the fluorescence intensity of a single CD45RO-positive cell
- the ordinate is the number of cells with different fluorescence intensities.
- Figure 8A Function of electroporation 40DCR2 in combination with EGFR G1 CAR, memory T phenotype of Mock T.
- the abscissa is the fluorescence intensity of a single CD62L-positive cell
- the ordinate is the fluorescence intensity of a cell not positive for a single CCR7.
- Figure 8B The function of electroporation 40DCR2 in combination with EGFR G1 CAR, the memory T phenotype of recombinant cell EGFR G1 CAR.
- the abscissa is the fluorescence intensity of a single CD62L-positive cell
- the ordinate is the fluorescence intensity of a cell not positive for a single CCR7.
- Figure 8C The function of electroporation 40DCR2 in combination with EGFR G1 CAR, the memory T phenotype of recombinant cell EGFR G2 CAR.
- the abscissa is the fluorescence intensity of a single CD62L-positive cell
- the ordinate is the fluorescence intensity of a cell not positive for a single CCR7.
- Figure 9A Two-way activation of chimeric antigen receptor EGFR CAR-T cells have an 8:1 killing effect on H23 tumor cell lines in vitro.
- Figure 9D Two-way activation of chimeric antigen receptor EGFR CAR-T cells have a 4:1 killing effect on ASPC-1 tumor cell lines in vitro.
- Figure 10 Changes in IL-2, IL-4, IL-6, IL-10, TNF- ⁇ and IFN- ⁇ cytokines stimulated by EGFR antigen in a bidirectionally activated chimeric antigen receptor EGFR CAR-T cells.
- Figure 11 Therapeutic effect of two-way activation of chimeric antigen receptor EGFR CAR-T cells on a transplanted tumor model of ovarian cancer mice.
- nucleic acid sequence of 40DCR3 (containing a signal peptide) (SEQ ID NO: 17)
- the pNB328 vector contains an EF1 ⁇ promoter, a PB transposon, and the like, and the construction of the pNB328 vector is described in Example 2 of WO2017054647A1.
- PS328b is a synthetic sequence synthesized by Shanghai Jierui Bioengineering Co., Ltd., and the sequence is shown in SEQ ID NO:27.
- CD3 ⁇ antibody purchased from abcam
- GAPDH antibody purchased from Beyotime
- HRP goat anti-mouse secondary antibody purchased from Jackson
- FIG. 2A The result is shown in Figure 2A.
- the concentration of DNA in each recombinant cell was determined, and the expression level of 40DCR gene was detected by real-time quantitative PCR.
- the reaction was: 95 ° C, 15 s; 95 ° C, 5 s; 60 ° C, 15 s. 40 cycles.
- CD40-R 0.4 ⁇ l
- the primer sequences are as follows:
- Recombinant cells prepared in Example 2 were EGFR G1 CAR, EGFR G2 CAR, EGFR G1CAR-40DCR2, 40DCR1, 40DCR2, 40DCR3 and Mock T.
- a 96-well white plate was prepared, and each of the above cells on the 8th day of culture was separately taken, and 100 ⁇ L of cell-containing AIM-V medium was added to each well.
- FIG. 3 shows that Mock T has the slowest proliferation rate and 40DCR proliferation rate is faster.
- Figure 4 shows that Mock T has the slowest proliferation rate, EGFR G1 CAR has a slower proliferation rate, EGFR G2CAR has a faster proliferation rate, and EGFR G1 CAR-40DCR2 has the fastest proliferation rate.
- the above cells were collected separately, counted, and added to a 1.5 ml EP tube at 1 ⁇ 10 6 cells/tube, washed twice with PBS, centrifuged at 1200 rpm for 5 min, and added 2 ⁇ l of the isotype control antibody IgG1-PE, fluorescent flow antibody.
- IgG1-PE fluorescent flow antibody.
- 5A-5D are three single-transformed cells of three 40DCR1, 40DCR2, and 40DCR3, and the CD137 phenotype is greatly improved relative to Mock T;
- 6A-6D are CD137 phenotypes of Mock T, EGFR G1 CAR, EGFR G2 CAR, EGFR G1 CAR-40DCR2, and EGFR G1 CAR-40DCR2 is greatly improved compared to the other three groups;
- Example 5 Real-time label-free cell function analyzer detects bidirectional costimulatory molecule-activated receptor 40DCR combination In vitro killing effect of EGFR G1 CAR-T cells on tumor cells
- RTCA real-time label-free cell function analyzer
- step 2 After 24 hours of target cell culture, stop step 2, add effector cells, 50 ⁇ l per well, and set the effective target ratio to 8:1, 4: (all tumor cells are 10 4 )1
- the plasmid Mock T cells were used as a control, and step 3 was started. After co-culture for 24 hours, the cell proliferation curve was observed.
- Mock T had the weakest killing effect on tumor cells
- EGFR G1 CAR had weaker killing effect on tumor cells
- EGFR G2 CAR had stronger killing effect on tumor cells.
- EGFR G1 CAR-40DCR1, EGFR G1 CAR-40DCR3 pair Tumor cells have the strongest killing effect.
- Example 6 Flow cytometry detection of EGFR CAR-T cytokine secretion under EGFR antigen stimulation
- the recombinant cells prepared in Example 2 were EGFR G1 CAR, EGFR G2 CAR, EGFR G1CAR-40DCR1 and Mock T.
- the 96-well plate was coated with 5 ⁇ g/ml of EGFR antigen, coated at 4 ° C overnight, washed 3 times with PBS, and 1 ⁇ 10 5 of each sample cell was added, and the cell supernatant was collected after 24 hours of culture.
- BD TM CBA Human Th1 / Th2Cytokine Kit II detecting EGFR CAR-T cells after antigen stimulation by EGFR cytokine secretion.
- the secretion of various cytokines of Mock T is the weakest, the secretion of various cytokines of EGFR G1 CAR is weak, the secretion of various cytokines of EGFR G2 CAR is strong, and the secretion of various cytokines of EGFR G1 CAR-40DCR1 The strongest.
- Example 7 In vivo work of bidirectional costimulatory molecule-activated receptor 40DCR in combination with EGFR G1 CAR-T cells Can experiment
- Human ovarian cancer cell line SK-OV-3-luc was cultured in vitro, adherent growth cells in logarithmic growth phase were taken, digested with 0.25% trypsin, centrifuged, collected, resuspended in PBS, centrifuged at 1000 rpm for 2 minutes at room temperature. The supernatant was discarded, resuspended in PBS, and the cells were collected by centrifugation, and the cell suspension concentration was adjusted to 5 ⁇ 10 7 /ml.
- SK-OV-3-luc cells were inoculated subcutaneously in the right flank of the mouse, 0.1 ml/mouse. After 10 days of inoculation, tumor size can be observed by a live imager.
- mice were randomly divided into 4 groups, 5 in each group.
- the administration route was direct tail vein injection, each 0.1 ml/only, that is, 5 ⁇ 10 6 positive cells, and the solvent was PBS. Only once.
- mice The living state of the mice was observed daily and the tumor changes of the mice were observed by a living imager every 10 days.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Genetics & Genomics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- Molecular Biology (AREA)
- Wood Science & Technology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biophysics (AREA)
- General Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Cell Biology (AREA)
- Microbiology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Animal Behavior & Ethology (AREA)
- Physics & Mathematics (AREA)
- Plant Pathology (AREA)
- Pharmacology & Pharmacy (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Virology (AREA)
- Toxicology (AREA)
- Developmental Biology & Embryology (AREA)
- Gastroenterology & Hepatology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Hematology (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Abstract
本发明属于细胞生物学和免疫学领域领域,涉及一种CD40双向激活共刺激分子受体及其用途。具体地,本发明涉及一种CD40双向激活共刺激分子受体,其从N端到C端依次包括下述元件:可选的信号肽、CD40激活型单链抗体、胞外铰链区、跨膜区和胞内共刺激信号分子。当CD40双向激活共刺激分子受体与包含第一信号的第一代CAR-T共同修饰T细胞时,可以产生强烈的集群效应,杀伤肿瘤细胞。同时,这种双向激活的作用仅仅局限在相互接触的T细胞之间,不会像注射CD40的激活型抗体一样,引发强烈T细胞免疫,造成潜在严重毒副作用。
Description
本发明属于细胞生物学和免疫学领域领域,涉及一种CD40双向激活共刺激分子受体,及其用该受体修饰后的T细胞治疗恶性肿瘤的用途。
肿瘤过继细胞治疗(adoptive cell therapy,ACT)是将经处理的自体或异体免疫细胞(主要是自体细胞)回输给肿瘤患者,直接杀伤肿瘤细胞,或者通过激发机体的免疫应答杀伤肿瘤细胞,达到治疗目的。当前肿瘤过继细胞治疗发展迅速,在多种恶性肿瘤的临床治疗中取得了非常好的疗效(Nature.2016;Jun16;534(7607):396-401);(Cell.2016 Oct 6;167(2):405-418.e13)。肿瘤免疫细胞治疗被认为是最有前景的治疗恶性肿瘤的手段之一。
T细胞活化需要两个信号的刺激,即两种T细胞活化相关信号。其中,T细胞表面TCR-CD3复合体与抗原肽-MHC分子结合,提供T细胞活化的第一信号,决定T细胞的杀伤特异性;T细胞表面的共刺激分子(如CD28)与相应配体(如B7)结合,提供T细胞活化的第二信号,促进T细胞活化、增殖与存活。但肿瘤细胞第一信号刺激源(如MHC分子)与第二信号配体(如B7)等缺乏或表达下降,无法有效提供T细胞活化相关的信号,从而无法激活T细胞免疫反应。而广泛性的激活T细胞共刺激分子,可能带来强烈的毒副作用。
嵌合抗原受体CAR(chimeric antigen receptors,CAR)通过胞外特异性识别肿瘤抗原的单链抗体片段(Single chain Variable Fragment,scFv),激活胞内信号CD3ζ或FcεRIγ的ITAM(immunoreceptor tyrosine-based activation motifs)信号传递。但是第一代CAR受体缺乏T细胞的共刺激信号,导致T细胞只能发挥瞬间效应,在体内存在时间短、细胞因子分泌少。
第二代与第三代的CAR是将T细胞激活所需的两个信号进行了合并,将第二信号CD28或/和4-1BB细胞内信号区域直接连接到CD3ζ分子,从而绕过了肿瘤细胞通常第二信号如B7等缺乏所引起T细胞不能激活的障碍。第一信号与第二信号合并后,大大提高了对T细胞激活、增殖及杀伤能力,使之疗效大幅度增加,基于目前对T细胞激活机制的理解,CD28、4-1BB分子能够提供第二个激活信号并进一 步加强TCR/CD3信号。
然而,不管何种CAR-T细胞,其只能对改造后的T细胞提供刺激信号,缺乏旁观者功能,并不能激活周围T细胞,产生更强的群集效应,引起一系列激活T细胞功能的级联反应。
发明内容
本发明人经过深入的研究和创造性的劳动,设计了一种双向共刺激分子激活受体(Dual Costimulatory Activated Receptor,DCR),其通过CD40胞外激活型抗体传递T细胞活化相关的第二信号。经修饰后的T细胞,不仅能通过胞外的CD40激活型抗体,激活自身的CD40共刺激分子信号,还能通过与周围未修饰活化的T细胞接触后,激活被接触的T细胞的胞内的共刺激分子信号,促进T细胞活化、增殖与存活。特别是,当其与包含第一信号的第一代CAR-T共同修饰T细胞时,可以产生强烈的集群效应,杀伤肿瘤细胞。另外,这种双向激活的作用仅仅局限在相互接触的T细胞之间,不会像注射CD40的激活型抗体一样,引发强烈T细胞免疫,造成潜在严重毒副作用。
由此提供了下述发明:
本发明的一个方面涉及一种分离的多肽,其从N端到C端依次包括下述元件:
可选的信号肽、激活CD40的多肽(例如CD40激活型单链抗体或CD40的配体)、胞外铰链区、跨膜区和胞内共刺激信号分子。
在本发明的一个或多个实施方案中,所述的多肽,其特征在于如下的(1)-(5)项中的任意1项、2项、3项、4项或者5项:
(1)所述信号肽为膜蛋白信号肽;优选地,所述信号肽为选自CD8信号肽、CD28信号肽和CD4信号肽中的一种或多种;优选地,所述信号肽是CD8信号肽;优选地,CD8信号肽的氨基酸序列如SEQ ID NO:1所示;
(2)所述CD40激活型单链抗体的氨基酸序列如SEQ ID NO:2所示;所述CD40的配体是CD40L;
(3)所述胞外铰链区为选自IgG4Fc CH2CH3铰链区、CD28铰链区和CD8铰链区的一种或多种;优选地,为IgG4Fc CH2CH3铰链区;优选地,所述IgG4Fc CH2CH3铰链区的氨基酸序列如SEQ ID NO:3所示;
(4)所述跨膜区为选自CD28跨膜区、CD8跨膜区、CD3ζ跨膜区、CD134跨膜区、CD137跨膜区、ICOS跨膜区和DAP10跨膜区中的一种或多种;优选地,所述跨膜区为CD28跨膜区;优选地,所述CD28跨膜区的氨基酸序列如SEQ ID NO:4所示;
(5)所述胞内共刺激信号分子选自CD28胞内结构域、CD134/OX40胞内结构域、CD137/4-1BB胞内结构域、LCK胞内结构域、ICOS胞内结构域和DAP10胞内结构域中的一种或多种;优选地,所述胞内共刺激信号分子为CD28胞内结构域和/或CD137胞内结构域;优选地,所述CD28胞内结构域的氨基酸序列如SEQ ID NO:5所示;优选地,所述CD137胞内结构域的氨基酸序列如SEQ ID NO:6所示。
在本发明的一个或多个实施方案中,所述的多肽,其从N端到C端依次包括下述元件:
可选的CD8信号肽、CD40激活型单链抗体、IgG4Fc CH2CH3铰链区、CD28跨膜区、CD28胞内结构域和/或CD137胞内结构域。
在本发明的一个或多个实施方案中,所述的多肽,其如图1A-图1D所示。
在本发明的一个或多个实施方案中,所述的多肽,其氨基酸序列如SEQ ID NO:7至SEQ ID NO:14中任一序列所示。
本发明的另一方面涉及一种分离的多核苷酸,其编码本发明中任一项所述的分离的多肽;优选地,所述分离的多核苷酸的序列如SEQ ID NO:15至SEQ ID NO:22中任一序列所示。
本发明的再一方面涉及一种核酸构建体,包含本发明的多核苷酸。
本发明的再一方面涉及一种重组载体,其含有本发明的多核苷酸或者本发明的核酸构建体;优选地,所述重组载体为重组克隆载体、重组真核表达质粒或者重组病毒载体;优选地,所述重组表达载体为重组的转座子载体;优选地,所述转座子载体含有选自piggybac、sleeping beauty、frog prince、Tn5或Ty的转座元件;优选地,所述重组表达载体为本发明的多核苷酸与PS328b载体经重组得到的重组载体。
本发明的再一方面涉及一种重组载体组合,其包含第一重组载体和第二重组载体,其中:
所述第一重组载体为本发明的重组载体,
所述第二重组载体含有第一代嵌合抗原受体的编码序列;优选地,所述第一代嵌 合抗原受体为靶向EGFR的第一代嵌合抗原受体;优选地,所述第一代嵌合抗原受体的氨基酸序列如SEQ ID NO:23所示;优选地,所述第一代嵌合抗原受体的核酸序列如SEQ ID NO:24所示;
优选地,所述第二重组载体为重组的pNB328B载体。
其中,上述“第一重组载体”和“第二重组载体”中的“第一”和“第二”仅仅是为了指代上的区分,并不具有次序的含义。
本发明的再一方面涉及一种重组宿主细胞,其中,所述细胞含有本发明的多核苷酸、本发明的核酸构建体、本发明的重组载体或者本发明的重组载体组合;优选地,所述重组宿主细胞为重组哺乳动物细胞;优选地,所述重组宿主细胞为重组T细胞;优选地,所述重组T细胞为重组的外周血单核细胞。
本发明的双向激活共刺激分子受体还可以与第一代嵌合抗原受体联用。
本发明的再一方面涉及一种T细胞,其表达有本发明中任一权项所述的多肽,以及第一代嵌合抗原受体;优选地,所述重组T细胞为重组的外周血单核细胞;优选地,所述第一代嵌合抗原受体为靶向EGFR的第一代嵌合抗原受体;优选地,所述第一代嵌合抗原受体的氨基酸序列如SEQ ID NO:23所示。
本发明的再一方面涉及一种药用组合物,其包含本发明中任一项所述的多肽、本发明的多核苷酸、本发明的核酸构建体、本发明的重组载体、本发明的重组载体组合、本发明的重组宿主细胞或者本发明的T细胞;可选地,还包含药学上可接受的辅料。
本发明的再一方面涉及本发明中任一项所述的多肽、本发明的多核苷酸、本发明的核酸构建体、本发明的重组载体、本发明的重组载体组合、本发明的重组宿主细胞或者本发明的T细胞在制备治疗和/或预防癌症的药物中的用途;优选地,所述癌症为其癌细胞表面异常表达EGFR的癌症;优选地,所述癌症选自:腺癌、肺癌、结肠癌、大肠癌、乳腺癌、卵巢癌、宫颈癌、胃癌、胆管癌、胆囊癌、食管癌、胰腺癌或前列腺癌。
本发明的再一方面涉及本发明中任一项所述的多肽、本发明的多核苷酸、本发明的核酸构建体、本发明的重组载体、本发明的重组载体组合、本发明的重组宿主细胞或者本发明的T细胞在制备抑制癌细胞的药物中的用途;优选地,所述癌细胞为细胞表面异常表达EGFR的癌细胞;优选地,所述癌细胞选自如下癌症的癌细胞:腺癌、肺癌、 结肠癌、大肠癌、乳腺癌、卵巢癌、宫颈癌、胃癌、胆管癌、胆囊癌、食管癌、胰腺癌或前列腺癌。
本发明的再一方面涉及一种在体内或体外抑制癌细胞的方法,包括给予癌细胞以有效量的本发明中任一项所述的多肽、本发明的多核苷酸、本发明的核酸构建体、本发明的重组载体、本发明的重组载体组合、本发明的重组宿主细胞或者本发明的T细胞的步骤;优选地,所述癌细胞为细胞表面异常表达EGFR的癌细胞;优选地,所述癌细胞选自如下癌症的癌细胞:腺癌、肺癌、结肠癌、大肠癌、乳腺癌、卵巢癌、宫颈癌、胃癌、胆管癌、胆囊癌、食管癌、胰腺癌或前列腺癌。
本发明的再一方面涉及一种治疗和/或预防癌症的方法,包括给予有需求的受试者以有效量的本发明中任一项所述的多肽、本发明的多核苷酸、本发明的核酸构建体、本发明的重组载体、本发明的重组载体组合、本发明的重组宿主细胞或者本发明的T细胞的步骤;优选地,所述癌症为其癌细胞表面异常表达EGFR的癌症;优选地,所述癌症选自:腺癌、肺癌、结肠癌、大肠癌、乳腺癌、卵巢癌、宫颈癌、胃癌、胆管癌、胆囊癌、食管癌、胰腺癌或前列腺癌。
本发明的再一方面涉及本发明中任一项所述的多肽、本发明的多核苷酸、本发明的核酸构建体、本发明的重组载体、本发明的重组载体组合、本发明的重组宿主细胞或者本发明的T细胞在制备促进细胞因子分泌的药物中的用途,其中,所述细胞因子选自IL-2、IL-4、IL-6、IL-10、TNF-α和IFN-γ中的一种或多种。
本发明的再一方面涉及一种在体内或在体外促进T细胞的细胞因子分泌的方法,包括施加T细胞以有效量的本发明中任一项所述的多肽、本发明的多核苷酸、本发明的核酸构建体、本发明的重组载体、本发明的重组载体组合、本发明的重组宿主细胞或者本发明的T细胞的步骤;其中,所述细胞因子选自IL-2、IL-4、IL-6、IL-10、TNF-α和IFN-γ中的一种或多种。
在本发明中,除非另有说明,否则本文中使用的科学和技术名词具有本领域技术人员所通常理解的含义。并且,本文中所用的细胞培养、分子遗传学、核酸化学、免疫学实验室操作步骤均为相应领域内广泛使用的常规步骤。同时,为了更好地理解本发明,下面提供相关术语的定义和解释。
本发明中,术语“分离的”或“被分离的”指的是,从天然状态下经人工手段获得的。如果自然界中出现某一种“分离”的物质或成分,那么可能是其所处的天然环境发生了 改变,或从天然环境下分离出该物质,或二者情况均有发生。例如,某一活体动物体内天然存在某种未被分离的多聚核苷酸或多肽,而从这种天然状态下分离出来的高纯度的相同的多聚核苷酸或多肽即称之为分离的。术语“分离的”或“被分离的”不排除混有人工或合成的物质,也不排除存在不影响物质活性的其它不纯物质。
本发明中,术语“载体(vector)”是指,可将多聚核苷酸插入其中的一种核酸运载工具。当载体能使插入的多核苷酸编码的蛋白获得表达时,载体称为表达载体。载体可以通过转化,转导或者转染导入宿主细胞,使其携带的遗传物质元件在宿主细胞中获得表达。载体是本领域技术人员公知的,包括但不限于:质粒;噬菌粒;柯斯质粒;人工染色体,例如酵母人工染色体(YAC)、细菌人工染色体(BAC)或P1来源的人工染色体(PAC);噬菌体如λ噬菌体或M13噬菌体及动物病毒等。可用作载体的动物病毒包括但不限于,逆转录酶病毒(包括慢病毒)、腺病毒、腺相关病毒、疱疹病毒(如单纯疱疹病毒)、痘病毒、杆状病毒、乳头瘤病毒、乳头多瘤空泡病毒(如SV40)。一种载体可以含有多种控制表达的元件,包括但不限于,启动子序列、转录起始序列、增强子序列、选择元件及报告基因。另外,载体还可含有复制起始位点。
本发明中,术语“宿主细胞”是指,可用于导入载体的细胞,其包括但不限于,如大肠杆菌或枯草菌等的原核细胞,如酵母细胞或曲霉菌等的真菌细胞,如S2果蝇细胞或Sf9等的昆虫细胞,或者如纤维原细胞,CHO细胞,COS细胞,NSO细胞,HeLa细胞,BHK细胞,HEK 293细胞或人细胞等的动物细胞。
本发明中,术语“嵌合抗原受体”是人工改造受体,能够将识别肿瘤抗原的特异性分子(如抗体)锚定在免疫细胞(如T细胞)上,使免疫细胞识别肿瘤抗原或病毒抗原和杀死肿瘤细胞或病毒感染的细胞。
本发明中,术语“CD40”,NCBI基因库的官方ID号为958,表达于T细胞中,可促进T细胞的增殖和活化。在第二代嵌合型抗原受体修饰的T细胞疗法中,常作为胞内共刺激信号,增强T细胞的活化和增殖能力。
本发明中,术语“CD28”,NCBI基因库的官方ID号为940,表达于T细胞中,可促进T细胞的增殖和活化。在第二代嵌合型抗原受体修饰的T细胞疗法中,常作为胞内共刺激信号,增强T细胞的活化和增殖能力。
本发明中,术语“CD137”,NCBI基因库的官方ID号为3604,表达于T细胞中,可促进T细胞的增殖和活化。在第二代嵌合型抗原受体修饰的T细胞疗法中,常作为 胞内共刺激信号,增强T细胞的活化和增殖能力。
本发明中,术语“单链抗体”(single-chain antibody variable fragment,scFv)是指由抗体V
L区氨基酸序列和V
H区氨基酸序列经Linker连接而成,具有结合抗原能力的抗体片段。其中V
L和V
H结构域通过使其能够产生为单个多肽链的连接体配对形成单价分子(参见,例如,Bird等人,Science 242:423-426(1988)和Huston等人,Proc.Natl.Acad.Sci.USA 85:5879-5883(1988))。此类scFv分子可具有一般结构:NH
2-V
L-接头-V
H-COOH或NH
2-V
H-接头-V
L-COOH。合适的现有技术接头由重复的GGGGS氨基酸序列或其变体组成。例如,可使用具有氨基酸序列(GGGGS)
4的接头,但也可使用其变体(Holliger等人(1993),Proc.Natl.Acad.Sci.USA 90:6444-6448)。可用于本发明的其他接头由Alfthan等人(1995),Protein Eng.8:725-731,Choi等人(2001),Eur.J.Immunol.31:94-106,Hu等人(1996),Cancer Res.56:3055-3061,Kipriyanov等人(1999),J.Mol.Biol.293:41-56和Roovers等人(2001),Cancer Immunol.描述。
本发明中,术语“T细胞活化相关信号”是指与T细胞活化所需要两个信号,即T细胞表面TCR-CD3复合体与抗原肽-MHC分子结合,提供T细胞活化的第一信号,决定T细胞的杀伤特异性;T细胞表面的共刺激分子(如CD28)与相应配体(如B7)结合,提供T细胞活化的第二信号,促进T细胞活化、增殖与存活。
本发明中,所述免疫受体酪氨酸活化基序为CD3ζ和/或FcεRIγ的酪氨酸活化基序;优选地,所述免疫受体酪氨酸活化基序为CD3ζ酪氨酸活化基序,其氨基酸序列如SEQ ID NO:25所示。
本发明中术语“共刺激信号分子”(Co-stimulating molecule)是指免疫细胞表面的一些粘附分子,如CD28、CD134/OX40、CD137/4-1BB、CD40等,通过与其配体结合,激活免疫细胞的第二信号,增强免疫细胞的增殖能力及细胞因子的分泌功能,延长活化免疫细胞的存活时间。
本发明中,术语“PB”转座子,是Piggybac的简称。转座子是一段可移动的遗传因子。一段DNA序列可以从原位上单独复制或断裂下来,环化后插入另一位点,并对其后的基因起调控作用,此过程称转座。由于载体上的转座子发挥功能,使EGFR G1CAR、137DCR整合入T细胞基因组。
抗体分为激活型和阻断型抗体。本发明中,术语“胞外激活型抗体”是将抗体锚定在细胞膜表面,和细胞表面分子的作用位点(即配体和受体结合部位)结合,促进细 胞生物学功能。CD40胞外激活型抗体,由于CD40分子存在于大多数T细胞表面,被认为是一种T细胞特有的表面分子,CD40胞外激活型抗体可有效识别并激活CD40分子信号,产生第二信号,CD40可替代APC的第二信号作用。
本发明中,术语“旁观者功能”是指当肿瘤细胞、病毒感染的细胞时,单个CAR-T细胞,只能激活自身细胞第二信号,并不能进一步激活周围T细胞功能,导致周围T细胞不能引起一系列激活T细胞功能。
本发明中,术语“群集效应”是指单个修饰后的T细胞能够不断招募并激活周围未活化的T细胞,并激活周围T细胞下游信号通路,引起多个T细胞级的活化、增殖等功能。
本发明中,术语“EGFR”又称表皮生长因子受体、ErbB-1或HER1,epidermal growth factor receptor,NCBI基因库的官方ID号为1956。EGFR广泛分布于哺乳动物上皮细胞、成纤维细胞、胶质细胞、角质细胞等细胞表面,EGFR信号通路对细胞的生长、增殖和分化等生理过程发挥重要的作用。EGFR与肿瘤细胞的增殖、血管生成、肿瘤侵袭、转移及细胞凋亡的抑制有关。EGFR的过表达在恶性肿瘤的演进中起重要作用,胶质细胞癌、肾癌、肺癌、前列腺癌、胰腺癌、乳腺癌等。
本发明中,术语“药学上可接受的载体和/或赋形剂”是指在药理学和/或生理学上与受试者和活性成分相容的载体和/或赋形剂,其是本领域公知的(参见例如Remington's Pharmaceutical Sciences.Edited by Gennaro AR,19th ed.Pennsylvania:Mack Publishing Company,1995),并且包括但不限于:pH调节剂,表面活性剂,佐剂,离子强度增强剂。例如,pH调节剂包括但不限于磷酸盐缓冲液;表面活性剂包括但不限于阳离子,阴离子或者非离子型表面活性剂,例如Tween-80;离子强度增强剂包括但不限于氯化钠。
本发明中,术语“有效量”是指足以获得或至少部分获得期望的效果的量。例如,预防疾病(例如肿瘤)有效量是指,足以预防,阻止,或延迟疾病(例如肿瘤)的发生的量;治疗疾病有效量是指,足以治愈或至少部分阻止已患有疾病的患者的疾病和其并发症的量。测定这样的有效量完全在本领域技术人员的能力范围之内。例如,对于治疗用途有效的量将取决于待治疗的疾病的严重度、患者自己的免疫系统的总体状态、患者的一般情况例如年龄,体重和性别,药物的施用方式,以及同时施用的其他治疗等等。
在本发明中,所述受试者可以为哺乳动物,例如人。
发明的有益效果
当其与包含第一信号的第一代CAR-T共同修饰T细胞时,可以产生强烈的集群效应,杀伤肿瘤细胞。同时,这种双向激活的作用仅仅局限在相互接触的T细胞之间,不会像注射CD40的激活型抗体一样,引发强烈T细胞免疫,造成潜在严重毒副作用。本发明提供的CD40双向共刺激分子激活受体联合EGFR的嵌合抗原受体修饰的T细胞,可以特异性杀伤EGFR高表达的肿瘤细胞株,并且优于EGFR第一代、第二代CAR-T,同时对不表达的肿瘤细胞株杀伤作用较小或无,具有高效、高特异性。本发明能在保持第一代、第二代CAR疗效的基础上,CD40双向共刺激分子激活受体活化的T细胞能够激活自身T细胞第二信号,是针对肿瘤特异性抗原越强,第一信号CD3ζ激活也越强,相应地,CD40胞外激活型抗体传递T细胞活化相关的第二信号也越强,聚集在肿瘤局部周围,并且不断招募并激活周围未活化的T细胞,并激活T细胞下游信号通路,引起T细胞级联式的活化、增殖与存活。
图1A:CD40双向激活共刺激分子受体40DCR1的结构示意图。
图1B:CD40双向激活共刺激分子受体40DCR2的结构示意图。
图1C:CD40双向激活共刺激分子受体40DCR3的结构示意图。
图1D:CD40双向激活共刺激分子受体40DCR4的结构示意图。
图1E:EGFR G1 CAR结构示意图。
图1F:EGFR G2 CAR结构示意图。
图2A:双向激活嵌合抗原受体EGFR CAR-T细胞中CD3ζ的表达情况。内参为GADPH。
图2B:双向激活嵌合抗原受体EGFR CAR-T细胞中40DCR1、40DCR2、40DCR3的拷贝数的表达情况。
图3:电转40DCR功能,重组细胞40DCR1/2/3细胞细胞增殖曲线。横坐标代表时间(h),纵坐标代表细胞数(个)。
图4:双向激活嵌合抗原受体EGFR CAR-T细胞,细胞增殖曲线。
图5A:电转40DCR功能,Mock T的CD40表型。其中,横坐标为单个CD40阳性的细胞荧光强度,纵坐标为不同荧光强度的细胞数。
图5B:电转40DCR1功能,重组细胞40DCR1的CD40表型。其中,横坐标为单个CD40阳性的细胞荧光强度,纵坐标为不同荧光强度的细胞数。
图5C:电转40DCR2功能,重组细胞40DCR2的CD40表型。其中,横坐标为单个CD40阳性的细胞荧光强度,纵坐标为不同荧光强度的细胞数。
图5D:电转40DCR3功能,重组细胞40DCR3的CD40表型。其中,横坐标为单个CD40阳性的细胞荧光强度,纵坐标为不同荧光强度的细胞数。
图6A:电转40DCR2联合EGFR G1 CAR的功能,Mock T的CD40表型。其中,横坐标为单个CD40阳性的细胞荧光强度,纵坐标为不同荧光强度的细胞数。
图6B:电转40DCR2联合EGFR G1 CAR的功能,重组细胞EGFR G1 CAR的CD40表型。其中,横坐标为单个CD40阳性的细胞荧光强度,纵坐标为不同荧光强度的细胞数。
图6C:电转40DCR2联合EGFR G1 CAR的功能,重组细胞EGFR G2 CAR的CD40表型。其中,横坐标为单个CD40阳性的细胞荧光强度,纵坐标为不同荧光强度的细胞数。
图6D:电转40DCR2联合EGFR G1 CAR的功能,重组细胞EGFR G1CAR-40DCR1的CD40表型。其中,横坐标为单个CD40阳性的细胞荧光强度,纵坐标为不同荧光强度的细胞数。
图7A:电转40DCR2联合EGFR G1 CAR的功能,Mock T的CD45RO表型。其中,横坐标为单个CD45RO阳性的细胞荧光强度,纵坐标为不同荧光强度的细胞数。
图7B:电转40DCR2联合EGFR G1 CAR的功能,重组细胞EGFR G1 CAR的CD45RO表型。其中,横坐标为单个CD45RO阳性的细胞荧光强度,纵坐标为不同荧光强度的细胞数。
图7C:电转40DCR2联合EGFR G1 CAR的功能,重组细胞EGFR G2 CAR的CD45RO表型。其中,横坐标为单个CD45RO阳性的细胞荧光强度,纵坐标为不同荧光强度的细胞数。
图7D:电转40DCR2联合EGFR G1 CAR的功能,重组细胞EGFR G1CAR-40DCR1的CD45RO表型。其中,横坐标为单个CD45RO阳性的细胞荧光强度,纵坐标为不同荧光强度的细胞数。
图8A:电转40DCR2联合EGFR G1 CAR的功能,Mock T的记忆T表型。其中,横坐标为单个CD62L阳性的细胞荧光强度,纵坐标为不单个CCR7阳性的细胞荧光 强度。
图8B:电转40DCR2联合EGFR G1 CAR的功能,重组细胞EGFR G1 CAR的记忆T表型。其中,横坐标为单个CD62L阳性的细胞荧光强度,纵坐标为不单个CCR7阳性的细胞荧光强度。
图8C:电转40DCR2联合EGFR G1 CAR的功能,重组细胞EGFR G2 CAR的记忆T表型。其中,横坐标为单个CD62L阳性的细胞荧光强度,纵坐标为不单个CCR7阳性的细胞荧光强度。
图8D:电转40DCR联合EGFR G1 CAR的功能,重组细胞EGFR G1CAR-40DCR1的记忆T表型。其中,横坐标为单个CD62L阳性的细胞荧光强度,纵坐标为不单个CCR7阳性的细胞荧光强度。
图9A:双向激活嵌合抗原受体EGFR CAR-T细胞在体外对H23肿瘤细胞株效靶比为8:1的杀伤。
图9B:双向激活嵌合抗原受体EGFR CAR-T细胞在体外对H23肿瘤细胞株效靶比为4:1的杀伤。
图9C:双向激活嵌合抗原受体EGFR CAR-T细胞在体外对ASPC-1肿瘤细胞株效靶比为8:1的杀伤。
图9D:双向激活嵌合抗原受体EGFR CAR-T细胞在体外对ASPC-1肿瘤细胞株效靶比为4:1的杀伤。
图10:双向激活嵌合抗原受体EGFR CAR-T细胞在EGFR抗原刺激下IL-2,IL-4,IL-6,IL-10,TNF-α和IFN-γ细胞因子的变化。
图11:双向激活嵌合抗原受体EGFR CAR-T细胞对卵巢癌小鼠移植瘤模型的治疗效果。
本发明涉及的部分序列如下:
1.CD8信号肽的氨基酸序列(SEQ ID NO:1)
2.CD40胞外激活型单链抗体的氨基酸序列(SEQ ID NO:2)
3.IgG4Fc CH2CH3铰链区的氨基酸序列(SEQ ID NO:3)
4.CD28跨膜区的氨基酸序列(SEQ ID NO:4)
5.CD28胞内共刺激信号胞内结构域的氨基酸序列(SEQ ID NO:5)
6.CD137胞内共刺激信号胞内结构域的氨基酸序列(SEQ ID NO:6)
7. 40DCR1的氨基酸序列(含信号肽)(SEQ ID NO:7)
8. 40DCR2的氨基酸序列(含信号肽)(SEQ ID NO:8)
9. 40DCR3的氨基酸序列(含信号肽)(SEQ ID NO:9)
10. 40DCR4的氨基酸序列(含信号肽)(SEQ ID NO:10)
11. 40DCR1的氨基酸序列(不含信号肽)(SEQ ID NO:11)
12. 40DCR2的氨基酸序列(不含信号肽)(SEQ ID NO:12)
13. 40DCR3的氨基酸序列(不含信号肽)(SEQ ID NO:13)
14. 40DCR4的氨基酸序列(不含信号肽)(SEQ ID NO:14)
15. 40DCR1的核酸序列(含信号肽)(SEQ ID NO:15)
16. 40DCR2的核酸序列(含信号肽)(SEQ ID NO:16)
17. 40DCR3的核酸序列(含信号肽)(SEQ ID NO:17)
18. 40DCR4的核酸序列(含信号肽)(SEQ ID NO:18)
19. 40DCR1的核酸序列(不含信号肽)(SEQ ID NO:19)
20. 28DCR2的核酸序列(不含信号肽)(SEQ ID NO:20)
21. 40DCR3的核酸序列(不含信号肽)(SEQ ID NO:21)
22. 40DCR4的核酸序列(不含信号肽)(SEQ ID NO:22)
23.EGFR G1 CAR的氨基酸序列(SEQ ID NO:23)
24.EGFR G1 CAR的核酸序列(SEQ ID NO:24)
25.CD3ζ的酪氨酸活化基序(SEQ ID NO:25)
26.EGFR G2 CAR的核苷酸序列(SEQ ID NO:26)
27.PS328b载体的核酸序列(SEQ ID NO:27)
28.引物CD40-F的碱基序列(SEQ ID NO:28)
29.引物CD40-R的碱基序列(SEQ ID NO:29)
30.探针Taqman中的碱基序列(SEQ ID NO:30)
下面将结合实施例对本发明的实施方案进行详细描述。本领域技术人员将会理解,下面的实施例仅用于说明本发明,而不应视为限定本发明的范围。实施例中未注明具体技术或条件者,按照本领域内的文献所描述的技术或条件(例如参考J.萨姆布鲁克等著,黄培堂等译的《分子克隆实验指南》,第三版,科学出版社)或者按照产品说明书进行。所用试剂或仪器未注明生产厂商者,均为可以通过市场购买获得的常规产品。
实施例1:5种重组质粒即pNB328-EGFR G1 CAR、pNB328-EGFR G2 CAR、PS328b
40DCR1、PS328b 40DCR2和PS328b 40DCR3的构建
1.人工合成40DCR1的基因(SEQ ID NO:15)、40DCR2的基因(SEQ ID NO:16)、40DCR3的基因(SEQ ID NO:17)、EGFR G1 CAR基因(SEQ ID NO:24)以及EGFR G2 CAR基因(SEQ ID NO:26),其结构示意图分别如图1A、图1B、图1C、图1F和图1D所示。将合成的5个基因分别装入pNB328载体和PS328b载体,EcoRI和SalI酶切位点之间,
pNB328载体中包含EF1α启动子、PB转座子等原件,pNB328载体的构建请参见WO2017054647A1的实施例2。PS328b是人工合成序列,由上海捷瑞生物工程有限公司合成,序列如SEQ ID NO:27所示。
构建出的重组质粒分别命名为pNB328-EGFR G1 CAR质粒、pNB328-EGFR G2CAR质粒、PS328b 40DCR1质粒、PS328b 40DCR2质粒和PS328b 40DCR3质粒。构建出的重组质粒分别可以携带外源基因整合到宿主细胞的基因组中。
实施例2:9种嵌合型抗原受体修饰T细胞即重组细胞EGFR G1 CAR、EGFR G2
CAR、EGFR G1 CAR-40DCR1、EGFR G1 CAR-40DCR2、EGFR G1 CAR-40DCR3、
40DCR1、40DCR2、40DCR3和Mock T的构建和鉴定
(1)9种重组细胞的构建
将外周血单核细胞(PBMCs)贴壁培养2-4h,其中未贴壁的悬浮细胞即为初始T细胞。将悬浮细胞收集到15ml离心管中,1200rmp离心3min,弃上清;加入生理盐水,1200rmp离心3min,弃生理盐水,并重复“加入生理盐水,1200rmp离心3min,弃生理盐水”的步骤3次。
取8个1.5ml离心管,每管加入5×106个上述细胞,编号分别为a、b、c、d、e、f、g、h,1200rmp离心3min,弃上清,取电转试剂盒(来自Lonza公司),每管按比例加入电转试剂共100μl,其中:
a管加入pNB328-EGFR G1 CAR质粒8μg,
b管加入pNB328-EGFR G2 CAR质粒8μg,
c管加入PS328b 40DCR1质粒和pNB328-EGFR G1 CAR质粒各4μg,
d管加入PS328b 40DCR2质粒和pNB328-EGFR G1 CAR质粒各4μg,
e管加入PS328b 40DCR3质粒和pNB328-EGFR G1 CAR质粒各4μg,
f管加入PS328b 40DCR1质粒8μg,
g管加入PS328b 40DCR2质粒8μg,
h管加入PS328b 40DCR3质粒8μg,
将上述8管各自重悬混匀,分别得到混合液。
将各混合液分别转移至电转杯中,放入电转仪,选取所需程序,进行电击;使用试剂盒中的微量吸管将电转好的细胞悬液转移到加好培液的六孔板中(含2%FBS的AIM-Ⅴ培液),混匀,置于37℃,5%CO
2培养箱培养6小时,然后加入刺激因子IL-2和EGFR/anti-CD28,37℃,5%CO
2培养3-4天,观察T细胞的生长情况。由此分别获得了表达pNB328-EGFR G1 CAR、pNB328-EGFR G2 CAR、pNB328-EGFR G1 CAR-40DCR1、pNB328-EGFR G1 CAR-40DCR2、pNB328-EGFR G1 CAR-40DCR3、PS328b 40DCR1、PS328b 40DCR2和PS328b 40DCR3基因的重组T细胞,依次命名为重组细胞EGFR G1 CAR、重组细胞EGFR G2 CAR、重组细胞EGFR G1 CAR-40DCR1、重组细胞EGFR G1 CAR-40DCR2和重组细胞EGFR G1 CAR-40DCR3、重组细胞40DCR1、重组细胞40DCR2以及重组细胞40DCR3。
此外,在另一离心管(编号j),加入5×10
6个细胞,1200rmp离心3min,弃上清,取电转试剂盒(购自Lonza公司),按比例加入电转试剂共100μl,并加入8μg对照质粒(PNB328),按前文所述方法构建得到对照T细胞,命名为Mock T。
(2)阳性重组细胞的鉴定
①western blot方法检测EGFR G1 CAR或EGFR G2 CAR基因的表达
分别收集上述重组细胞EGFR G1 CAR、EGFR G2 CAR、EGFR G1 CAR-40DCR1、EGFR G1CAR-40DCR2、EGFR G1 CAR-40DCR3和Mock-T细胞,生理盐水洗涤两遍,
分别加入160μl细胞裂解液,冰上放置10min;待细胞充分裂解后,12000rmp,4℃,离心10min,收集上清。加入40μl 5×loading Buffer,100℃煮10min,然后冰上放置5min。
使用CD3ζ抗体(购自abcam公司)、GAPDH抗体(购自Beyotime公司)、HRP羊抗鼠二抗(购自Jackson公司),通过western blot等等检测前面构建的5种重组细胞中的CD3ζ的表达,结果如图2A所示。
结果显示,CD3ζ在这构建的5种重组T细胞中均为高表达。
②RT-PCR检测40DCR基因表达
分别提取重组细胞EGFR G1 CAR、EGFR G2 CAR、EGFR G1 CAR-40DCR1、EGFR G1 CAR-40DCR2、EGFR G1 CAR-40DCR3和Mock-T的基因组DNA(试剂盒法),实验步骤参照试剂盒内附带的说明书。
测定各重组细胞DNA的浓度,采用荧光实时定量PCR的方法检测40DCR基因的表达水平,反应为:95℃,15s;95℃,5s;60℃,15s。40个循环。
PCR反应体系(20μl)如下:
Taqman:10μl
CD40-F:0.4μl
CD40-R:0.4μl
CD40-probe:0.2μl
Actin mix:1μl
H
2O:7μl
引物序列如下:
CD40-F:ACCTCCTGATCTATACTG(SEQ ID NO:28)
CD40-R:GATGGTGAGAGTGAAATC(SEQ ID NO:29)
Taqman:5'FAM-CACTGCCGCTGAACCTTGATG-Trama(SEQ ID NO:30)
结果如图2B所示。结果显示,重组细胞EGFR G1 CAR-40DCR1、EGFR G1CAR-40DCR2、EGFR G1 CAR-40DCR3细胞中,40DCR基因的表达量很高。
实施例3:细胞增殖活力试剂盒检测细胞技术检测细胞增殖活力
1.实验样品和试剂
实施例2制得的重组细胞EGFR G1 CAR、EGFR G2 CAR、EGFR G1CAR-40DCR2、40DCR1、40DCR2、40DCR3和Mock T。
2.实验方法
(1)准备96孔白色板,分别取培养第8天的上述各细胞,每孔加入100μL含细胞的AIM-V培养基。
(2)准备不含细胞的空白对照,以获得背景荧光值。
(3)在孔板中加入待测复合物,在培养箱中孵育30min。
(4)加入100μL CellTiter-Glo试剂,在震荡仪上混匀2min,并在室温下孵育10min,读数。
(5)培养的第8、9、10天,每天都按以上步骤检测。
3.实验结果
分别如图3和图4所示。
图3表明,Mock T增殖速率最慢,40DCR增殖速率均较快。
图4表明,Mock T增殖速率最慢,EGFR G1 CAR增殖速率较慢,EGFR G2CAR增殖速率较快,EGFR G1 CAR-40DCR2增殖速率最快。
实施例4:流式检测EGFR抗原刺激下双向共刺激分子激活受体40DCR联合
EGFR G1 CAR-T细胞表型
1.实验样品
实施例2制得的重组细胞EGFR G1 CAR、EGFR G2 CAR、EGFR G1CAR-40DCR3、40DCR1,40DCR2,40DCR 3和Mock T。
2.实验方法
分别收集上述各细胞,计数后以1×10
6个细胞/管分别加入1.5ml的EP管中,PBS洗两遍,1200rpm离心5min,分别加入2μl的同型对照抗体IgG1-PE,荧光流式抗体anti-CD137、同型对照(IgG1FITC+IgG1PC5+IgG1PE),(anti-CD45RO-PC5,anti-CD62L-FITC,anti-CCR7-PE),轻弹沉淀使其混合均匀,室温避光孵育30min,PBS清洗一遍,加400μlPBS将细胞转移至流式管中,上机检测。
3.实验结果
如图5A-5D、图6A-6D、图7A-7D和图8A-8D所示。其中:
图5A-5D为3种40DCR1、40DCR2、40DCR3的3种单转细胞,CD137表型相对于Mock T有很大提高;
图6A-6D为Mock T、EGFR G1 CAR、EGFR G2 CAR、EGFR G1 CAR-40DCR2的CD137表型,相对于其他三组,EGFR G1 CAR-40DCR2有很大提高;
图7A-7D为Mock T、EGFR G1 CAR、EGFR G2 CAR、EGFR G1 CAR-40DCR2的CD45RO表型,表示细胞活化程度,均已大量活化;
图8A-8D为Mock T、EGFR G1 CAR、EGFR G2 CAR、EGFR G1 CAR-40DCR2的记忆T表型,相对于其他三组,EGFR G1 CAR-40DCR2能促进记忆T的形成。
实施例5:实时无标记细胞功能分析仪检测双向共刺激分子激活受体40DCR联合
EGFR G1 CAR-T细胞对肿瘤细胞的体外杀伤作用
1.实验样品
效应细胞:实施例2制得的重组细胞EGFR G1 CAR、EGFR G2 CAR、EGFR G1CAR-40DCR1、EGFR G1 CAR-40DCR3、40DCR1、40DCR2、40DCR3和Mock T。
靶细胞:宫颈癌细胞Hela、卵巢癌细胞SK-OV-3(均购买于美国菌种保藏中心ATCC)。
2.实验方法
选取MHC class I分型匹配的效应细胞与靶细胞,应用实时无标记细胞功能分析仪(RTCA)检测上述细胞的体外杀伤活性,具体步骤如下:
(1)调零:每孔加入50μl DMEM或1640培养液,放入仪器中,选择step 1,调零;
(2)靶细胞铺板:宫颈癌细胞Hela、卵巢癌细胞SK-OV-3分别按每孔10
4个细胞/50μl铺在含有检测电极的板中,放置数分钟,待细胞稳定一下,再放入仪器中,开始step 2,培养细胞;
(3)加入效应细胞:靶细胞培养24h后,暂停step 2,加入效应细胞,每孔50μl,效靶比分别设置为8:1、4:(肿瘤细胞均为10
4个)1,以未转质粒的Mock T细胞作为对照,开始step 3,继续共培养24h后,观察细胞增殖曲线。
2.实验结果
如图9A-9D所示。
结果显示,Mock T对肿瘤细胞的杀伤作用最弱,EGFR G1 CAR对肿瘤细胞的杀 伤作用较弱,EGFR G2 CAR对肿瘤细胞的杀伤作用较强,EGFR G1 CAR-40DCR1、EGFR G1 CAR-40DCR3对肿瘤细胞的杀伤作用最强。
实施例6:流式检测EGFR抗原刺激下EGFR CAR-T细胞因子分泌量
1.实验样品
实施例2制得的重组细胞EGFR G1 CAR、EGFR G2 CAR、EGFR G1CAR-40DCR1和Mock T。
2.实验方法
1.用5μg/ml的EGFR抗原包被96孔板,4℃包被过夜,PBS清洗3遍,分别加入1×10
5的各样品细胞,培养24h后收集细胞上清。用BD
TMCBA Human Th1/Th2Cytokine Kit II检测EGFR CAR-T细胞受EGFR抗原刺激后细胞因子的分泌情况。
具体步骤如下:
(1)混合人的IL-2、IL-4、IL-6、IL-10、TNF、IFN-γ捕获磁珠,涡旋振荡混匀捕获磁珠,每管加入50μl混匀后的捕获磁珠;
(2)加入50μl人的Th1/Th2细胞因子标准品(倍比稀释5000pg/ml、2500pg/ml、1250pg/ml、625pg/ml、312.5pg/ml、156pg/ml、80pg/ml、40pg/ml、20pg/ml、0pg/ml)和50μl的待测样品(经稀释液2倍稀释)。
(3)每管加入50μl的人的Th1/Th2-II-PE的检测抗体;
(4)室温避光孵育3h;
(5)每管加入1ml的Wash Buffer,200离心5min,弃上清;
(6)每管加入300μl的Wash Buffer重悬细胞,并转移至流式管中,用流式细胞仪检测荧光值。
3.实验结果
如图10所示。
结果显示,相较于Mock T细胞,其余细胞各种细胞因子(IL-2、IL-4、IL-6、IL-10、TNF-α和IFN-γ)的分泌量都有很大的提高。Mock T各种细胞因子的分泌量最弱,EGFR G1 CAR各种细胞因子的分泌量较弱,EGFR G2 CAR各种细胞因子的分泌量较强,EGFR G1 CAR-40DCR1各种细胞因子的分泌量最强。
实施例7:双向共刺激分子激活受体40DCR联合EGFR G1 CAR-T细胞的体内功
能实验
1.实验样品和实验动物
4-6周龄NSG完全免疫缺陷小鼠20只,平均重量22-27g,由北京维通达生物技术有限公司提供,SPF级动物实验室饲养。
实施例2制得的重组细胞EGFR G1 CAR、EGFR G2 CAR、EGFR G1CAR-40DCR3和Mock T。
卵巢癌细胞SK-OV-3-luc(购自上海慧颖生物科技有限公司)。
2.实验方法
(1)体外培育人卵巢癌细胞SK-OV-3-luc,取对数生长期贴壁生长细胞,0.25%胰酶消化,离心、收集细胞后用PBS液重悬,1000rmp室温离心2分钟,弃上清,再用PBS液重悬后离心收集细胞,调整细胞悬液浓度至5×10
7个/ml。
(2)于小鼠右肋背部皮下接种SK-OV-3-luc细胞,0.1ml/只。接种10天后,可通过活体成像仪观察肿瘤大小。
(3)将NSG免疫缺陷小鼠随机分为4组,每组5只。给药途径为直接尾静脉注射,每只0.1ml/只,即5×10
6个阳性细胞,溶剂为PBS。只给药一次。
(4)每日观察小鼠的生活状态并每隔10天通过活体成像仪观察小鼠肿瘤变化。
3.实验结果
如图11所示。
结果显示,Mock T是对照组,肿瘤细胞荧光强度强,EGFR G1 CAR是靶向EGFR的一代CAR,肿瘤细胞荧光强度减弱,表明有一定的治疗效果,EGFR G2 CAR肿瘤细胞荧光强度更弱,表明有进一步的好的治疗效果,EGFR G1 CAR-40DCR3肿瘤细胞荧光强度最弱,表明有最好的治疗效果。
尽管本发明的具体实施方式已经得到详细的描述,本领域技术人员将会理解。根据已经公开的所有教导,可以对那些细节进行各种修改和替换,这些改变均在本发明的保护范围之内。本发明的全部范围由所附权利要求及其任何等同物给出。
Claims (20)
- 一种分离的多肽,其从N端到C端依次包括下述元件:可选的信号肽、激活CD40的多肽(例如CD40激活型单链抗体或CD40的配体)、胞外铰链区、跨膜区和胞内共刺激信号分子。
- 根据权利要求1所述的多肽,其特征在于如下的(1)-(5)项中的任意1项、2项、3项、4项或者5项:(1)所述信号肽为膜蛋白信号肽;优选地,所述信号肽为选自CD8信号肽、CD28信号肽和CD4信号肽中的一种或多种;优选地,所述信号肽是CD8信号肽;优选地,CD8信号肽的氨基酸序列如SEQ ID NO:1所示;(2)所述CD40激活型单链抗体的氨基酸序列如SEQ ID NO:2所示;所述CD40的配体是CD40L;(3)所述胞外铰链区为选自IgG4Fc CH2CH3铰链区、CD28铰链区和CD8铰链区的一种或多种;优选地,为IgG4Fc CH2CH3铰链区;优选地,所述IgG4Fc CH2CH3铰链区的氨基酸序列如SEQ ID NO:3所示;(4)所述跨膜区为选自CD28跨膜区、CD8跨膜区、CD3ζ跨膜区、CD134跨膜区、CD137跨膜区、ICOS跨膜区和DAP10跨膜区中的一种或多种;优选地,所述跨膜区为CD28跨膜区;优选地,所述CD28跨膜区的氨基酸序列如SEQ ID NO:4所示;(5)所述胞内共刺激信号分子选自CD28胞内结构域、CD134/OX40胞内结构域、CD137/4-1BB胞内结构域、LCK胞内结构域、ICOS胞内结构域和DAP10胞内结构域中的一种或多种;优选地,所述胞内共刺激信号分子为CD28胞内结构域和/或CD137胞内结构域;优选地,所述CD28胞内结构域的氨基酸序列如SEQ ID NO:5所示;优选地,所述CD137胞内结构域的氨基酸序列如SEQ ID NO:6所示。
- 根据权利要求1或2所述的多肽,其从N端到C端依次包括下述元件:可选的CD8信号肽、CD40激活型单链抗体、IgG4Fc CH2CH3铰链区、CD28跨膜区、CD28胞内结构域和/或CD137胞内结构域。
- 根据权利要求1至3中任一权利要求所述的多肽,其氨基酸序列如SEQ ID NO:7至SEQ ID NO:14中任一序列所示。
- 一种分离的多核苷酸,其编码权利要求1至4中任一权利要求所述的分离的多肽;优选地,所述分离的多核苷酸的序列如SEQ ID NO:15至SEQ ID NO:22中任一序列所示。
- 一种核酸构建体,包含权利要求5所述的多核苷酸。
- 一种重组载体,其含有权利要求5所述的多核苷酸或者权利要求6所述的核酸构建体;优选地,所述重组载体为重组克隆载体、重组真核表达质粒或者重组病毒载体;优选地,所述重组表达载体为重组的转座子载体;优选地,所述转座子载体含有选自piggybac、sleeping beauty、frog prince、Tn5或Ty的转座元件;优选地,所述重组表达载体为权利要求5所述的多核苷酸与PS328b载体经重组得到的重组载体。
- 一种重组载体组合,其包含第一重组载体和第二重组载体,其中:所述第一重组载体为权利要求7所述的重组载体,所述第二重组载体含有第一代嵌合抗原受体的编码序列;优选地,所述第一代嵌合抗原受体为靶向EGFR的第一代嵌合抗原受体;优选地,所述第一代嵌合抗原受体的氨基酸序列如SEQ ID NO:23所示;优选地,所述第一代嵌合抗原受体的核酸序列如SEQ ID NO:24所示;优选地,所述第二重组载体为重组的pNB328B载体。
- 一种重组宿主细胞,其中,所述细胞含有权利要求5所述的多核苷酸、权利要求6所述的核酸构建体、权利要求7所述的重组载体或者权利要求8所述的重组载体组合;优选地,所述重组宿主细胞为重组哺乳动物细胞;优选地,所述重组宿主细胞为重组T细胞;优选地,所述重组T细胞为重组的外周血单核细胞。
- 一种T细胞,其表达有权利要求1至4中任一权利要求所述的多肽,以及第一代嵌合抗原受体;优选地,所述重组T细胞为重组的外周血单核细胞;优选地,所述第一代嵌合抗原受体为靶向EGFR的第一代嵌合抗原受体;优选地,所述第一代嵌合抗原受体的氨基酸序列如SEQ ID NO:23所示。
- 一种药用组合物,其包含权利要求1至4中任一权利要求所述的多肽、权利要求5所述的多核苷酸、权利要求6所述的核酸构建体、权利要求7所述的重组载体、权利要求8所述的重组载体组合、权利要求9所述的重组宿主细胞或者权利要求10所述的T细胞;可选地,还包含药学上可接受的辅料。
- 权利要求1至4中任一权利要求所述的多肽、权利要求5所述的多核苷酸、权利要求6所述的核酸构建体、权利要求7所述的重组载体、权利要求8所述的重组载体组合、权利要求9所述的重组宿主细胞或者权利要求10所述的T细胞在制备治疗和/或预防癌症的药物中的用途;优选地,所述癌症为其癌细胞表面异常表达EGFR的癌症;优选地,所述癌症选自:腺癌、肺癌、结肠癌、大肠癌、乳腺癌、卵巢癌、宫颈癌、胃癌、胆管癌、胆囊癌、食管癌、胰腺癌或前列腺癌。
- 权利要求1至4中任一权利要求所述的多肽、权利要求5所述的多核苷酸、权利要求6所述的核酸构建体、权利要求7所述的重组载体、权利要求8所述的重组载体组合、权利要求9所述的重组宿主细胞或者权利要求10所述的T细胞在制备抑制癌细胞的药物中的用途;优选地,所述癌细胞为细胞表面异常表达EGFR的癌细胞;优选地,所述癌细胞选自如下癌症的癌细胞:腺癌、肺癌、结肠癌、大肠癌、乳腺癌、卵巢癌、宫颈癌、胃癌、胆管癌、胆囊癌、食管癌、胰腺癌或前列腺癌。
- 权利要求1至4中任一权利要求所述的多肽、权利要求5所述的多核苷酸、权利要求6所述的核酸构建体、权利要求7所述的重组载体、权利要求8所述的重组载体组合、权利要求9所述的重组宿主细胞或者权利要求10所述的T细胞在制备促进细胞因子分泌的药物中的用途,其中,所述细胞因子选自IL-2、IL-4、IL-6、IL-10、TNF-α和IFN-γ中的一种或多种。
- 根据权利要求1至4中任一权利要求所述的多肽、权利要求5所述的多核苷酸、权利要求6所述的核酸构建体、权利要求7所述的重组载体、权利要求8所述的重组载体组合、权利要求9所述的重组宿主细胞或者权利要求10所述的T细胞,其用于治疗和/或预防癌症;优选地,所述癌症为其癌细胞表面异常表达EGFR的癌症;优选地,所述癌症选 自:腺癌、肺癌、结肠癌、大肠癌、乳腺癌、卵巢癌、宫颈癌、胃癌、胆管癌、胆囊癌、食管癌、胰腺癌或前列腺癌。
- 根据权利要求1至4中任一权利要求所述的多肽、权利要求5所述的多核苷酸、权利要求6所述的核酸构建体、权利要求7所述的重组载体、权利要求8所述的重组载体组合、权利要求9所述的重组宿主细胞或者权利要求10所述的T细胞,其用于抑制癌细胞;优选地,所述癌细胞为细胞表面异常表达EGFR的癌细胞;优选地,所述癌细胞选自如下癌症的癌细胞:腺癌、肺癌、结肠癌、大肠癌、乳腺癌、卵巢癌、宫颈癌、胃癌、胆管癌、胆囊癌、食管癌、胰腺癌或前列腺癌。
- 根据权利要求1至4中任一权利要求所述的多肽、权利要求5所述的多核苷酸、权利要求6所述的核酸构建体、权利要求7所述的重组载体、权利要求8所述的重组载体组合、权利要求9所述的重组宿主细胞或者权利要求10所述的T细胞,其用于促进细胞因子分泌,其中,所述细胞因子选自IL-2、IL-4、IL-6、IL-10、TNF-α和IFN-γ中的一种或多种。
- 一种治疗和/或预防癌症的方法,包括给予有需求的受试者以有效量的权利要求1至4中任一权利要求所述的多肽、权利要求5所述的多核苷酸、权利要求6所述的核酸构建体、权利要求7所述的重组载体、权利要求8所述的重组载体组合、权利要求9所述的重组宿主细胞或者权利要求10所述的T细胞的步骤;优选地,所述癌症为其癌细胞表面异常表达EGFR的癌症;优选地,所述癌症选自:腺癌、肺癌、结肠癌、大肠癌、乳腺癌、卵巢癌、宫颈癌、胃癌、胆管癌、胆囊癌、食管癌、胰腺癌或前列腺癌。
- 一种在体内或在体外抑制癌细胞的方法,包括施加癌细胞以有效量的权利要求1至4中任一权利要求所述的多肽、权利要求5所述的多核苷酸、权利要求6所述的核酸构建体、权利要求7所述的重组载体、权利要求8所述的重组载体组合、权利要求9所述的重组宿主细胞或者权利要求10所述的T细胞的步骤;优选地,所述癌细胞为细胞表面异常表达EGFR的癌细胞;优选地,所述癌细胞选自如下癌症的癌细胞:腺癌、肺癌、结肠癌、大肠癌、乳 腺癌、卵巢癌、宫颈癌、胃癌、胆管癌、胆囊癌、食管癌、胰腺癌或前列腺癌。
- 一种在体内或在体外促进T细胞的细胞因子分泌的方法,包括施加T细胞以有效量的权利要求1至4中任一权利要求所述的多肽、权利要求5所述的多核苷酸、权利要求6所述的核酸构建体、权利要求7所述的重组载体、权利要求8所述的重组载体组合、权利要求9所述的重组宿主细胞或者权利要求10所述的T细胞的步骤;其中,所述细胞因子选自IL-2、IL-4、IL-6、IL-10、TNF-α和IFN-γ中的一种或多种。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711466912.8 | 2017-12-28 | ||
CN201711466912.8A CN109970867B (zh) | 2017-12-28 | 2017-12-28 | 一种cd40双向激活共刺激分子受体及其用途 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019129047A1 true WO2019129047A1 (zh) | 2019-07-04 |
Family
ID=67063248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2018/123859 WO2019129047A1 (zh) | 2017-12-28 | 2018-12-26 | 一种cd40双向激活共刺激分子受体及其用途 |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN109970867B (zh) |
WO (1) | WO2019129047A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021509290A (ja) * | 2017-12-28 | 2021-03-25 | 上海細胞治療集団有限公司Shanghai Cell Therapy Group Co., Ltd. | 双方向活性化共刺激分子受容体及びその用途 |
US11667723B2 (en) | 2020-08-17 | 2023-06-06 | Utc Therapeutics (Shanghai) Co., Ltd. | Lymphocytes-antigen presenting cells co-stimulators and uses thereof |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111378046B (zh) * | 2018-12-27 | 2024-03-15 | 上海细胞治疗集团有限公司 | 一种免疫效应细胞转换受体 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103483453A (zh) * | 2012-06-12 | 2014-01-01 | 上海吴孟超医学科技基金会 | 结合egfr家族蛋白的嵌合抗原受体、其组合物及用途 |
CN105177031A (zh) * | 2015-06-12 | 2015-12-23 | 北京艺妙神州医疗科技有限公司 | 嵌合抗原受体修饰的t细胞及其用途 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1542731A4 (en) * | 2002-07-22 | 2006-03-01 | Vectorlogics Inc | TARGETED ADENOVIRAL VECTOR HAVING AN IMMUNOGLOBULIN FIXATION DOMAIN AND ITS APPLICATIONS |
US11458167B2 (en) * | 2015-08-07 | 2022-10-04 | Seattle Children's Hospital | Bispecific CAR T-cells for solid tumor targeting |
-
2017
- 2017-12-28 CN CN201711466912.8A patent/CN109970867B/zh active Active
-
2018
- 2018-12-26 WO PCT/CN2018/123859 patent/WO2019129047A1/zh active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103483453A (zh) * | 2012-06-12 | 2014-01-01 | 上海吴孟超医学科技基金会 | 结合egfr家族蛋白的嵌合抗原受体、其组合物及用途 |
CN105177031A (zh) * | 2015-06-12 | 2015-12-23 | 北京艺妙神州医疗科技有限公司 | 嵌合抗原受体修饰的t细胞及其用途 |
Non-Patent Citations (1)
Title |
---|
KEVIN J CURRAN: "Enhancing Antitumor Efiicacy of Chimeric Antigen Rece- ptor T Cells Through Constitutive CD 40L Expression", THE AMERICAN SOCIETY OF GENE & CELL THERAPY, vol. 25, no. 4, 30 April 2015 (2015-04-30), pages 769 - 778 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021509290A (ja) * | 2017-12-28 | 2021-03-25 | 上海細胞治療集団有限公司Shanghai Cell Therapy Group Co., Ltd. | 双方向活性化共刺激分子受容体及びその用途 |
JP7386177B2 (ja) | 2017-12-28 | 2023-11-24 | 上海細胞治療集団有限公司 | 双方向活性化共刺激分子受容体及びその用途 |
US11667723B2 (en) | 2020-08-17 | 2023-06-06 | Utc Therapeutics (Shanghai) Co., Ltd. | Lymphocytes-antigen presenting cells co-stimulators and uses thereof |
Also Published As
Publication number | Publication date |
---|---|
CN109970867B (zh) | 2022-10-18 |
CN109970867A (zh) | 2019-07-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109306014B (zh) | 一种靶向间皮素的嵌合抗原受体修饰t细胞及其用途 | |
WO2019129090A1 (zh) | 一种cd28双向激活共刺激分子受体及其用途 | |
JP2020529841A (ja) | ヒトドメインを有する抗b細胞成熟抗原キメラ抗原受容体 | |
WO2019129177A1 (zh) | 抗体修饰的嵌合抗原受体修饰t细胞及其用途 | |
WO2019128994A1 (zh) | 稳定表达PD-1抗体的Muc1特异性CAR-T细胞及其用途 | |
WO2019129047A1 (zh) | 一种cd40双向激活共刺激分子受体及其用途 | |
WO2019129146A1 (zh) | 自分泌cd47抗体的egfr特异性car-t细胞及其用途 | |
WO2019129056A1 (zh) | 一种cd137双向激活共刺激分子受体及其用途 | |
WO2019020087A1 (zh) | 一种靶向Muc1的嵌合抗原受体修饰T细胞及其用途 | |
WO2019129086A1 (zh) | 一种双向激活共刺激分子受体及其用途 | |
WO2019129174A1 (zh) | 靶向cd19且高水平稳定表达cd40抗体的car-t细胞及其用途 | |
WO2019129124A1 (zh) | 包含CD40抗体与muc1特异性嵌合抗原受体基因的T细胞及其用途 | |
WO2019128998A1 (zh) | 自表达pd-1抗体并靶向间皮素的嵌合抗原受体修饰t细胞及其用途 | |
WO2023019945A1 (zh) | 一种结合人淋巴细胞活化基因3(lag-3)的抗体及其用途 | |
CN114395047A (zh) | 双特异性抗体及其应用 | |
WO2019128999A1 (zh) | 获得高阳性率car-t细胞的方法 | |
WO2019129173A1 (zh) | 共表达cd40抗体与间皮素特异性嵌合抗原受体的t细胞及其用途 | |
EP4047021A1 (en) | Ox40/pd-l1 bispecific antibody | |
CN111378040A (zh) | 检测多种恶性肿瘤细胞的抗体及其应用 | |
CN110850068B (zh) | 一种嵌合抗原受体亲和力检测方法 | |
CN109485731A (zh) | 一种靶向EGFRvIII的嵌合抗原受体 | |
CN114805612B (zh) | 一种抗gd2抗体、含其的car、car组合及其应用 | |
CN110564749A (zh) | 靶向egfr的嵌合抗原受体及其用途 | |
CN113896804B (zh) | 嵌合抗原受体(car)及其应用 | |
TWI850282B (zh) | 用於治療癌症之質體建構體和使用方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18893520 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 18893520 Country of ref document: EP Kind code of ref document: A1 |