CN116813744B - T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof - Google Patents
T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof Download PDFInfo
- Publication number
- CN116813744B CN116813744B CN202310168724.6A CN202310168724A CN116813744B CN 116813744 B CN116813744 B CN 116813744B CN 202310168724 A CN202310168724 A CN 202310168724A CN 116813744 B CN116813744 B CN 116813744B
- Authority
- CN
- China
- Prior art keywords
- tcr
- cells
- cell
- mage
- seq
- 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.)
- Active
Links
- 108090000765 processed proteins & peptides Proteins 0.000 title claims abstract description 65
- 108091008874 T cell receptors Proteins 0.000 title claims abstract description 51
- 108091007433 antigens Proteins 0.000 title claims abstract description 48
- 239000000427 antigen Substances 0.000 title claims abstract description 47
- 102000036639 antigens Human genes 0.000 title claims abstract description 47
- 102000016266 T-Cell Antigen Receptors Human genes 0.000 title claims abstract description 33
- SSOORFWOBGFTHL-OTEJMHTDSA-N (4S)-5-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-6-amino-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[2-[(2S)-2-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-6-amino-1-[[(2S)-1-[[(2S)-1-[[(2S,3S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-6-amino-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-5-amino-1-[[(2S)-1-[[(2S)-1-[[(2S)-6-amino-1-[[(2S)-6-amino-1-[[(2S)-1-[[(2S)-1-[[(2S)-5-amino-1-[[(2S)-5-carbamimidamido-1-[[(2S)-5-carbamimidamido-1-[[(1S)-4-carbamimidamido-1-carboxybutyl]amino]-1-oxopentan-2-yl]amino]-1-oxopentan-2-yl]amino]-1,5-dioxopentan-2-yl]amino]-5-carbamimidamido-1-oxopentan-2-yl]amino]-5-carbamimidamido-1-oxopentan-2-yl]amino]-1-oxohexan-2-yl]amino]-1-oxohexan-2-yl]amino]-5-carbamimidamido-1-oxopentan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-1,5-dioxopentan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-1-oxopropan-2-yl]amino]-1-oxohexan-2-yl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-3-methyl-1-oxopentan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-5-carbamimidamido-1-oxopentan-2-yl]amino]-1-oxohexan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-5-carbamimidamido-1-oxopentan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-1-oxopropan-2-yl]amino]-5-carbamimidamido-1-oxopentan-2-yl]carbamoyl]pyrrolidin-1-yl]-2-oxoethyl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-5-carbamimidamido-1-oxopentan-2-yl]amino]-1-oxohexan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-5-carbamimidamido-1-oxopentan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-3-(1H-imidazol-4-yl)-1-oxopropan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-4-[[(2S)-2-[[(2S)-2-[[(2S)-2,6-diaminohexanoyl]amino]-3-methylbutanoyl]amino]propanoyl]amino]-5-oxopentanoic acid Chemical compound CC[C@H](C)[C@H](NC(=O)[C@@H](NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CCCCN)NC(=O)[C@@H](NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@@H](NC(=O)[C@H](CC(C)C)NC(=O)[C@H](C)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@@H]1CCCN1C(=O)CNC(=O)[C@H](Cc1c[nH]c2ccccc12)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](Cc1ccccc1)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CCCCN)NC(=O)[C@@H](NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](Cc1ccccc1)NC(=O)[C@H](Cc1c[nH]cn1)NC(=O)[C@@H](NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCC(O)=O)NC(=O)[C@H](C)NC(=O)[C@@H](NC(=O)[C@@H](N)CCCCN)C(C)C)C(C)C)C(C)C)C(C)C)C(C)C)C(C)C)C(=O)N[C@@H](Cc1ccccc1)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](C)C(=O)N[C@@H](CO)C(=O)N[C@@H](CO)C(=O)N[C@@H](CO)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCNC(N)=N)C(O)=O SSOORFWOBGFTHL-OTEJMHTDSA-N 0.000 title claims abstract 4
- 239000002246 antineoplastic agent Substances 0.000 claims abstract description 7
- 208000000461 Esophageal Neoplasms Diseases 0.000 claims abstract description 4
- 206010030155 Oesophageal carcinoma Diseases 0.000 claims abstract description 4
- 230000000259 anti-tumor effect Effects 0.000 claims abstract description 4
- 201000004101 esophageal cancer Diseases 0.000 claims abstract description 4
- 208000014829 head and neck neoplasm Diseases 0.000 claims abstract description 4
- 201000007270 liver cancer Diseases 0.000 claims abstract description 4
- 208000014018 liver neoplasm Diseases 0.000 claims abstract description 4
- 201000008968 osteosarcoma Diseases 0.000 claims abstract description 4
- 210000004027 cell Anatomy 0.000 claims description 145
- 125000003275 alpha amino acid group Chemical group 0.000 claims description 38
- 239000013604 expression vector Substances 0.000 claims description 13
- 238000003259 recombinant expression Methods 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 10
- 239000008194 pharmaceutical composition Substances 0.000 claims description 8
- 108091028043 Nucleic acid sequence Proteins 0.000 claims description 4
- 102000015636 Oligopeptides Human genes 0.000 claims description 2
- 108010038807 Oligopeptides Proteins 0.000 claims description 2
- 239000003937 drug carrier Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 3
- 239000003183 carcinogenic agent Substances 0.000 claims 2
- 230000003127 anti-melanomic effect Effects 0.000 claims 1
- 239000003814 drug Substances 0.000 claims 1
- 206010028980 Neoplasm Diseases 0.000 abstract description 32
- 210000001744 T-lymphocyte Anatomy 0.000 abstract description 31
- 230000002147 killing effect Effects 0.000 abstract description 8
- 102000000440 Melanoma-associated antigen Human genes 0.000 abstract description 6
- 108050008953 Melanoma-associated antigen Proteins 0.000 abstract description 6
- 201000001441 melanoma Diseases 0.000 abstract description 4
- 206010058467 Lung neoplasm malignant Diseases 0.000 abstract description 3
- 229940041181 antineoplastic drug Drugs 0.000 abstract description 3
- 238000009169 immunotherapy Methods 0.000 abstract description 3
- 201000005202 lung cancer Diseases 0.000 abstract description 3
- 208000020816 lung neoplasm Diseases 0.000 abstract description 3
- 229960005486 vaccine Drugs 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- XUMBMVFBXHLACL-UHFFFAOYSA-N Melanin Chemical compound O=C1C(=O)C(C2=CNC3=C(C(C(=O)C4=C32)=O)C)=C2C4=CNC2=C1C XUMBMVFBXHLACL-UHFFFAOYSA-N 0.000 abstract 2
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 230000009258 tissue cross reactivity Effects 0.000 description 102
- 239000013612 plasmid Substances 0.000 description 41
- 241000700605 Viruses Species 0.000 description 19
- 238000001514 detection method Methods 0.000 description 17
- 239000007788 liquid Substances 0.000 description 12
- 239000012141 concentrate Substances 0.000 description 11
- 238000012258 culturing Methods 0.000 description 11
- 201000011510 cancer Diseases 0.000 description 10
- 239000002609 medium Substances 0.000 description 10
- 206010022000 influenza Diseases 0.000 description 8
- 230000001580 bacterial effect Effects 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 238000012163 sequencing technique Methods 0.000 description 7
- 238000012800 visualization Methods 0.000 description 7
- 102100025137 Early activation antigen CD69 Human genes 0.000 description 6
- 101000934374 Homo sapiens Early activation antigen CD69 Proteins 0.000 description 6
- 230000004913 activation Effects 0.000 description 6
- 238000011534 incubation Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000012216 screening Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- 230000003321 amplification Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000001963 growth medium Substances 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000001890 transfection Methods 0.000 description 5
- 108010002350 Interleukin-2 Proteins 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000011324 bead Substances 0.000 description 4
- 230000020411 cell activation Effects 0.000 description 4
- 239000012636 effector Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 239000010413 mother solution Substances 0.000 description 4
- 150000007523 nucleic acids Chemical class 0.000 description 4
- 238000010186 staining Methods 0.000 description 4
- 239000006228 supernatant Substances 0.000 description 4
- 230000004083 survival effect Effects 0.000 description 4
- 210000001550 testis Anatomy 0.000 description 4
- 102400000888 Cholecystokinin-8 Human genes 0.000 description 3
- 101800005151 Cholecystokinin-8 Proteins 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- 239000012880 LB liquid culture medium Substances 0.000 description 3
- 241000713666 Lentivirus Species 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 238000013136 deep learning model Methods 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 239000000499 gel Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 208000002154 non-small cell lung carcinoma Diseases 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 102000004196 processed proteins & peptides Human genes 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- IZTQOLKUZKXIRV-YRVFCXMDSA-N sincalide Chemical compound C([C@@H](C(=O)N[C@@H](CCSC)C(=O)NCC(=O)N[C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)N[C@@H](CCSC)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(N)=O)NC(=O)[C@@H](N)CC(O)=O)C1=CC=C(OS(O)(=O)=O)C=C1 IZTQOLKUZKXIRV-YRVFCXMDSA-N 0.000 description 3
- 238000012174 single-cell RNA sequencing Methods 0.000 description 3
- 230000002194 synthesizing effect Effects 0.000 description 3
- 210000004881 tumor cell Anatomy 0.000 description 3
- 208000029729 tumor suppressor gene on chromosome 11 Diseases 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
- 108091007741 Chimeric antigen receptor T cells Proteins 0.000 description 2
- 229920000209 Hexadimethrine bromide Polymers 0.000 description 2
- 238000010867 Hoechst staining Methods 0.000 description 2
- 101000958041 Homo sapiens Musculin Proteins 0.000 description 2
- 101000914514 Homo sapiens T-cell-specific surface glycoprotein CD28 Proteins 0.000 description 2
- 229930192392 Mitomycin Natural products 0.000 description 2
- NWIBSHFKIJFRCO-WUDYKRTCSA-N Mytomycin Chemical compound C1N2C(C(C(C)=C(N)C3=O)=O)=C3[C@@H](COC(N)=O)[C@@]2(OC)[C@@H]2[C@H]1N2 NWIBSHFKIJFRCO-WUDYKRTCSA-N 0.000 description 2
- 239000012124 Opti-MEM Substances 0.000 description 2
- 239000012980 RPMI-1640 medium Substances 0.000 description 2
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 2
- 102100027213 T-cell-specific surface glycoprotein CD28 Human genes 0.000 description 2
- -1 TCR-T cell Proteins 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000004113 cell culture Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000002512 chemotherapy Methods 0.000 description 2
- 238000003501 co-culture Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 210000002472 endoplasmic reticulum Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010437 gem Substances 0.000 description 2
- 210000004602 germ cell Anatomy 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 102000046949 human MSC Human genes 0.000 description 2
- 238000000338 in vitro Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 108020004999 messenger RNA Proteins 0.000 description 2
- 229960004857 mitomycin Drugs 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 108020004707 nucleic acids Proteins 0.000 description 2
- 102000039446 nucleic acids Human genes 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 238000001959 radiotherapy Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000012192 staining solution Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 239000012137 tryptone Substances 0.000 description 2
- PRDFBSVERLRRMY-UHFFFAOYSA-N 2'-(4-ethoxyphenyl)-5-(4-methylpiperazin-1-yl)-2,5'-bibenzimidazole Chemical compound C1=CC(OCC)=CC=C1C1=NC2=CC=C(C=3NC4=CC(=CC=C4N=3)N3CCN(C)CC3)C=C2N1 PRDFBSVERLRRMY-UHFFFAOYSA-N 0.000 description 1
- GOJUJUVQIVIZAV-UHFFFAOYSA-N 2-amino-4,6-dichloropyrimidine-5-carbaldehyde Chemical group NC1=NC(Cl)=C(C=O)C(Cl)=N1 GOJUJUVQIVIZAV-UHFFFAOYSA-N 0.000 description 1
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- 241001550224 Apha Species 0.000 description 1
- 208000035404 Autolysis Diseases 0.000 description 1
- 238000011357 CAR T-cell therapy Methods 0.000 description 1
- 108010078791 Carrier Proteins Proteins 0.000 description 1
- 102000014914 Carrier Proteins Human genes 0.000 description 1
- 206010057248 Cell death Diseases 0.000 description 1
- 108020004705 Codon Proteins 0.000 description 1
- 239000011665 D-biotin Substances 0.000 description 1
- 235000000638 D-biotin Nutrition 0.000 description 1
- 239000006144 Dulbecco’s modified Eagle's medium Substances 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 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
- 108700018351 Major Histocompatibility Complex Proteins 0.000 description 1
- 102000004245 Proteasome Endopeptidase Complex Human genes 0.000 description 1
- 108090000708 Proteasome Endopeptidase Complex Proteins 0.000 description 1
- 108010090804 Streptavidin Proteins 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 230000003698 anagen phase Effects 0.000 description 1
- 230000030741 antigen processing and presentation Effects 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 230000003915 cell function Effects 0.000 description 1
- 230000022534 cell killing Effects 0.000 description 1
- 230000006037 cell lysis Effects 0.000 description 1
- 238000002659 cell therapy Methods 0.000 description 1
- 230000003833 cell viability Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 239000002299 complementary DNA Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000012228 culture supernatant Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 210000000805 cytoplasm Anatomy 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000000684 flow cytometry Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010353 genetic engineering Methods 0.000 description 1
- 210000002288 golgi apparatus Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001900 immune effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 210000004698 lymphocyte Anatomy 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 210000003819 peripheral blood mononuclear cell Anatomy 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 210000002826 placenta Anatomy 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 108020003175 receptors Proteins 0.000 description 1
- 102000005962 receptors Human genes 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 230000028043 self proteolysis Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 230000020382 suppression by virus of host antigen processing and presentation of peptide antigen via MHC class I Effects 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000011222 transcriptome analysis Methods 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 239000012096 transfection reagent Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/0005—Vertebrate antigens
- A61K39/0011—Cancer antigens
- A61K39/001102—Receptors, cell surface antigens or cell surface determinants
- A61K39/001111—Immunoglobulin superfamily
-
- 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
- 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
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
- C12N15/85—Vectors or expression systems specially adapted for eukaryotic hosts for animal cells
- C12N15/86—Viral vectors
-
- 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
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0634—Cells from the blood or the immune system
- C12N5/0636—T lymphocytes
-
- 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
-
- 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
- C12N2740/00—Reverse transcribing RNA viruses
- C12N2740/00011—Details
- C12N2740/10011—Retroviridae
- C12N2740/15011—Lentivirus, not HIV, e.g. FIV, SIV
- C12N2740/15041—Use of virus, viral particle or viral elements as a vector
- C12N2740/15043—Use of virus, viral particle or viral elements as a vector viral genome or elements thereof as genetic vector
-
- 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
- C12N2800/00—Nucleic acids vectors
- C12N2800/10—Plasmid DNA
- C12N2800/106—Plasmid DNA for vertebrates
- C12N2800/107—Plasmid DNA for vertebrates for mammalian
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Genetics & Genomics (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Biomedical Technology (AREA)
- Zoology (AREA)
- General Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Wood Science & Technology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Microbiology (AREA)
- Cell Biology (AREA)
- Biophysics (AREA)
- Pharmacology & Pharmacy (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Molecular Biology (AREA)
- Gastroenterology & Hepatology (AREA)
- Plant Pathology (AREA)
- Hematology (AREA)
- Oncology (AREA)
- Mycology (AREA)
- Physics & Mathematics (AREA)
- Epidemiology (AREA)
- Toxicology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Virology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Abstract
The invention discloses a T cell receptor for recognizing MAGE-A3 antigen short peptide, which can target MAGE-A3 antigen epitope peptide (SEQ ID NO: 21), and is used for constructing T cell receptor T cells (TCR-T) and has obvious inhibition effect on tumors expressing melanoma-associated antigen A3 (SEQ ID NO: 21). The T cell receptor can be used for preparing anti-tumor drugs and anti-tumor vaccines, and has remarkable killing effect on tumors expressing melanin related antigen A3 (SEQ ID NO: 21) such as lung cancer, melanoma, liver cancer, head and neck tumor, esophageal cancer and osteosarcoma. Therefore, the T cell receptor provides a new way for the immunotherapy of tumors related to melanoma-associated antigen A3.
Description
Technical Field
The invention relates to the technical field of biology, in particular to a T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof.
Background
MAGE-A3 is an antigen with unique characteristics in the Melanoma Antigen Gene (MAGE) family, which is a proto-cancerous antigen, and is one of the members of the cancer testis (cancer antigen) superfamily, more than 60 of which are all present in the same MAGE homology domain. Two main subclasses are: MAGE-I antigens and MAGE-II antigens. The expression of MAGE-II antigens is commonly found in normal cells, while MAGE-I antigens are tumor specific antigens, i.e. they are not expressed in human tissues except testis germ cells and placenta word tissues, but are highly expressed in tumors, which are hot spots in tumor research. Germ cells lack HLA, so cancer testis antigens are not recognized by T cells; however, in malignant tumors, cancer testis antigens and HLA molecules are expressed simultaneously and thus recognized by T cells.
MAGE-I antigens can be divided into three subclasses: MAGE-A, MAGE-B and MAGE-C. The MAGE-A subfamily has a strict expression pattern in which MAGE-A3 is specifically highly expressed in tumors as a focus, with 65% of melanoma patients having MAGE-A3 specifically highly expressed, up to 85% in non-small cell lung cancer (NSCLC) patients. In addition, MAGE-A3 is also highly expressed in a variety of tumors, such as liver cancer (Zang C, et al BMC cancer 2021.21 (1): 1007), head and neck tumors (Cesson V, et al cancer Immunol immunother.2011.60 (1): 23-35), osteosarcoma (Conley AP, et al cancer (Basel): 2019.11 (5): 677), and esophageal cancer (Chen X, et al int J cancer.2018.143 (10): 2561-2574), and the like. For the tumors, methods such as chemotherapy, radiotherapy and the like are generally adopted, and the curative effect is poor and adverse reactions are verified.
The MAGE-A3 antigen is degraded Cheng Xiaotai fragments in the proteasome and released into the cytoplasm, and then transported to the Endoplasmic Reticulum (ER) by a transport protein associated with antigen presentation (TAP) to form a stable complex of MHC class I (major histocompatibility complex) molecules and peptides (pMHC), which is then transported to the cell surface via the golgi apparatus for recognition by antigen recognition receptors (TCRs) on the T cell surface. LVFGIELMEV is an epitope peptide derived from MAGE-A3 antigen, and is a target for tumor treatment related to MAGE-A3 antigen high expression.
T cells are an important force for killing tumor cells, and activation and killing of T cells is achieved by specifically recognizing antigen peptides presented by MHC treatment through TCR, so that high-affinity TCR can be developed by means of genetic engineering technology. Currently, "engineering" T cell technology (T-cell engineering technology) largely serves the barrier to traditional tumor chemotherapy and radiotherapy, mainly comprising two major classes of chimeric antigen receptor T cells (CAR-T) and T cell receptor T cells (TCR-T). CAR-T cell therapy requires cancer cell surface expression of specific tumor antigens and is therefore not suitable for killing MAGE-A3-highly expressed tumors.
The TCR-T cell therapy principle is to transfect TCR alpha and TCR beta chain genes capable of recognizing tumor specific antigens into T cells, so that the TCR antigen binding region of the T cells is structurally changed, thereby being capable of specifically recognizing the corresponding tumor antigens, and then amplifying and inputting the corresponding tumor antigens back into a human body in vitro, and the T lymphocytes expressing the tumor antigen specific TCR (can recognize HLA-peptide complexes on the surfaces of the tumor cells) are used for triggering the immune effect of the T cells, so that the purpose of killing the tumor cells is achieved.
Therefore, the selection of TCR specific for MAGE-A3 epitope peptide and the transduction of T cells by the TCR to obtain T cells specific for MAGE-A3 epitope peptide is of great importance for cellular immunotherapy.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof.
It is a first object of the present invention to provide a T cell receptor that recognizes MAGE-A3 antigen short peptides.
It is a second object of the present invention to provide a TCR-T cell.
A third object of the present invention is to provide a recombinant expression vector.
It is a fourth object of the present invention to provide a host cell.
A fifth object of the present invention is to provide a pharmaceutical composition
The sixth object of the present invention is to provide the use of the above T cell receptor, TCR-T cell, nucleic acid molecule, recombinant expression vector/host cell and/or pharmaceutical composition for the preparation of antitumor drug.
A seventh object of the present invention is to provide the use of the above T cell receptor, TCR-T cell, nucleic acid molecule, recombinant expression vector/host cell and/or pharmaceutical composition for the preparation of an anti-tumor vaccine.
In order to achieve the above object, the present invention is realized by the following means:
a T cell receptor that recognizes a MAGE-A3 antigen oligopeptide, said T cell receptor being one of:
comprising the amino acid sequence of the CDR3 region as shown in SEQ ID NO:1 and the amino acid sequence of the TCR alpha peptide chain and the CDR3 region are shown in SEQ ID NO:6, a TCR β peptide chain;
comprising the amino acid sequence of the CDR3 region as shown in SEQ ID NO:2 and the amino acid sequence of the TCR alpha peptide chain and the CDR3 region are shown in SEQ ID NO: 7;
comprising the amino acid sequence of the CDR3 region as shown in SEQ ID NO:3 and the amino acid sequence of the TCR alpha peptide chain and the CDR3 region are shown in SEQ ID NO: 8;
comprising the amino acid sequence of the CDR3 region as shown in SEQ ID NO:4 and the amino acid sequence of the TCR alpha peptide chain and the CDR3 region are shown in SEQ ID NO: 9;
comprising the amino acid sequence of the CDR3 region as shown in SEQ ID NO:5 and the amino acid sequences of the TCR alpha peptide chain and the CDR3 region are shown in SEQ ID NO: 10.
Preferably, the T cell receptor is one of the following:
comprises an amino acid sequence shown in SEQ ID NO:11 and the amino acid sequence of the TCR alpha peptide chain shown in SEQ ID NO:16, a TCR β peptide chain;
comprises an amino acid sequence shown in SEQ ID NO:12 and the amino acid sequence of the TCR alpha peptide chain is shown in SEQ ID NO:17, a TCR β peptide chain;
comprises an amino acid sequence shown in SEQ ID NO:13 and the amino acid sequence of the TCR alpha peptide chain shown in SEQ ID NO:18, a TCR β peptide chain;
comprises an amino acid sequence shown in SEQ ID NO:14 and the amino acid sequence of the TCR alpha peptide chain shown in SEQ ID NO:19, a TCR β peptide chain;
comprises an amino acid sequence shown in SEQ ID NO:15 and the amino acid sequence of the TCR alpha peptide chain shown in SEQ ID NO: 20.
Preferably, the T cell receptor is a T cell receptor targeting MAGE-A3 epitope peptide; the amino acid sequence of the MAGE-A3 epitope peptide is shown in SEQ ID NO: 21.
MAGE-A3 epitope peptide (SEQ ID NO: 21): LVFGIELMEV.
A TCR-T cell comprising a T cell receptor as described above.
A method of producing a TCR-T cell comprising the steps of:
s1, synthesizing nucleotide sequences of TCR alpha peptide chains and TCR beta peptide chains of the T cell receptor, and converting the nucleotide sequences into 18121 plasmids to obtain recombinant plasmids;
s2, carrying out slow virus packaging on the recombinant plasmid obtained in the step S1 by using 293T cells to obtain TCR slow virus;
s3, infecting Jurkat76 cells by using the TCR slow virus obtained in the step S3 to obtain infected cells, and screening the infected cells positive in TCR expression to obtain the TCR-T cells.
A recombinant expression vector comprising nucleotide sequences encoding the above-described TCR a and TCR β chains.
Preferably, the expression vector is pHIV-Zsgreen (Plasmid # 18121).
A host cell comprising the T cell receptor described above and/or the recombinant expression vector described above.
A pharmaceutical composition comprising one or more of the above T cell receptor, the above TCR-T cell, the above recombinant expression vector and/or the above host cell, and further comprising a pharmaceutically acceptable carrier.
The invention also claims the use of the above T cell receptor, the above TCR-T cell, the above recombinant expression vector, the above host cell and/or the above pharmaceutical composition for the preparation of an antitumor drug.
Preferably, the tumor is a tumor expressing melanoma-associated antigen A3 (MAGE-A3).
More preferably, the amino acid sequence of the melanoma-associated antigen A3 (MAGE-A3) is as set forth in SEQ ID NO: 21.
More preferably, the tumor is lung cancer, melanoma, liver cancer, head and neck tumor, esophageal cancer and/or osteosarcoma.
Further preferably, the tumor is lung cancer.
The invention also claims the use of the above T cell receptor, the above TCR-T cell, the above recombinant expression vector, the above host cell and/or the above pharmaceutical composition for the preparation of an anti-tumor vaccine.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a T cell receptor for recognizing MAGE-A3 antigen short peptide, which is one of the following: comprising the amino acid sequence of the CDR3 region as shown in SEQ ID NO:1 and the amino acid sequence of the TCR alpha peptide chain and the CDR3 region are shown in SEQ ID NO:6, a TCR β peptide chain; comprising the amino acid sequence of the CDR3 region as shown in SEQ ID NO:2 and the amino acid sequence of the TCR alpha peptide chain and the CDR3 region are shown in SEQ ID NO: 7; comprising the amino acid sequence of the CDR3 region as shown in SEQ ID NO:3 and the amino acid sequence of the TCR alpha peptide chain and the CDR3 region are shown in SEQ ID NO: 8; comprising the amino acid sequence of the CDR3 region as shown in SEQ ID NO:4 and the amino acid sequence of the TCR alpha peptide chain and the CDR3 region are shown in SEQ ID NO: 9; comprising the amino acid sequence of the CDR3 region as shown in SEQ ID NO:5 and the amino acid sequences of the TCR alpha peptide chain and the CDR3 region are shown in SEQ ID NO: 10. The T cell receptor can target MAGE-A3 epitope peptide (SEQ ID NO: 21), and the T cell receptor T cell (TCR-T) constructed by using the T cell receptor has remarkable killing effect on tumors expressing melanoma-associated antigen A3. The invention provides a new way for the immunotherapy of melanoma associated antigen A3 associated tumors.
Drawings
FIG. 1 is a flow chart of the screening and identification of MAGE-A3 antigen specific TCRs;
FIG. 2 shows MAGE-A3 epitope peptide activation of CD8 + Results plot of T cells;
FIG. 3 is a graph of the results of a single cell transcriptome analysis of cell type UMAP for MAGE-A3 antigen specific CD 8T cells;
FIG. 4 is a UMAP visual result diagram of 5 candidate TCRs screened out by constructing antigen-specific TCR predictive models by using neural network frameworks such as Tessa, pMTnet and the like;
FIG. 5 is a graph of UMAP visualization results of TCR clonal amplification;
FIG. 6 is a graph showing the results of flow-through detection of TCR α/β expression in Jurkat76 cells;
FIG. 7 is a graph showing the results of flow-through detection of CD69 and CD137 expression from Jurkat76 cells; a: a graph of the results of the detection of CD69 activation in cells; b: a graph of the results of the detection of CD137 activation in cells; c: histogram of CD69 activation in cells; d: histogram of CD137 activation status detection in cells;
FIG. 8 is a graph showing the results of CCK8 detection of cell viability;
FIG. 9 is a graph showing the detection of PC9 cell survival by Hoechst staining.
Detailed Description
The invention will be further described in detail with reference to the drawings and specific examples, which are given solely for the purpose of illustration and are not intended to limit the scope of the invention. The test methods used in the following examples are conventional methods unless otherwise specified; the materials, reagents and the like used, unless otherwise specified, are those commercially available.
The screening and identification of MAGE-A3 antigen-specific TCRs of the invention is shown in FIG. 1.
Example 1MAGE-A3 epitope peptide-specific CD8 + Preparation of T cells
1. Experimental method
(1) Preparation of Tetramer Tetramer complexes
Synthesizing MAGE-A3 epitope peptide (SEQ ID NO: 21), preparing an epitope peptide mother solution with the concentration of 10mM by using DMSO, diluting the epitope peptide mother solution to 400 mu M by using PBS, and obtaining a diluted mother solution for later use.
MAGE-A3 epitope peptide (SEQ ID NO: 21): LVFGIELMEV.
Adding 20 mu L of diluted mother solution and 20 mu L of Flex-T monomer (200 mu g/mL) into a 96-well U-shaped plate, blowing and mixing uniformly, taking off a sealing plate membrane, placing the 96-well U-shaped plate on ice, irradiating for 30min by using a UV lamp (the distance between the UV lamp and a sample is kept between 2 cm and 5 cm), covering the sealing plate membrane, and incubating for 30min in a dry and dark place at 37 ℃ to obtain the pMHC complex monomer (formed by MAGE-A3 epitope peptide and Flex-T monomer).
mu.L of pMHC complex monomer was taken into a 1.5mL EP tube, 3.3. Mu.L of streptavidin (BioLegend Cat #405203, U.S. Pat.) was added to the EP tube, and the mixture was blown and mixed at a gun tip, and incubated at 4℃for 30min in the absence of light.
After the incubation was completed, 2.4. Mu.L of blocking solution (1.6. Mu.L, 50mM D-biotin (Thermo Fisher, cat#B20656, US), 6. Mu.L of 10% (w/v) NaN was added to the EP tube 3 And 192.4. Mu.L of PBS), and the reaction was terminated by blowing. Incubation overnight at 4-8deg.C gave a Tetramer complex (comprising MAGE-A3 epitope peptide (SEQ ID NO: 21)).
The simultaneous preparation of UV-Tetramer complexes differs from Tetramer complexes in that: does not contain MAGE-A3 epitope peptide, and the rest are the same.
(2) Specific CD8 + Preparation of T cells
Isolation of mononuclear lymphocytes (PBMC) from peripheral venous blood of healthy human 1 and isolation by magnetic beads to give CD8 + T cells.
T2-A2 cells were treated with 20. Mu.g/mL mitomycin for 30min, followed by labelling with CFSE for 20min, and then co-incubating with MAGE-A3 epitope peptide (SEQ ID NO: 21) for 4h to give MAGE-A3 epitope peptide-loaded T2-A2 cells.
MAGE-A3 epitope peptide (SEQ ID NO: 21): LVFGIELMEV.
Will be 0.5X10 6 CD8 of (C) + T cells and 0.5X10 6 Is co-cultured in a medium and co-stimulated with 1. Mu.g/mL of an anti-human CD28 antibody and 50IU/mL of IL-2. The medium was supplemented with 50IU/mL IL-2 and 20. Mu.M MAGE-A3 epitope peptide (SEQ ID NO: 21) every two days during the co-cultivation.
After co-culturing for 7 days, labeling the co-cultured cells with the Tetramer complex obtained in step (1), and flow-sorting to obtain specific CD8 + T cell (MAGE-A3 epitope peptide specific CD 8) + T cells).
And (3) constructing T2-A2 cells loaded with MAGE-A3 epitope peptide by adopting the same experimental method for healthy people 2, repeatedly carrying out an experiment by using the Tetramer complex obtained in the step (1), marking the cells after co-culture, and carrying out flow sorting.
The control group was set up to co-culture cells without the UV-Tetramer complex of MAGE-A3 epitope peptide (SEQ ID NO: 21) and flow sort.
2. Experimental results
MAGE-A3 epitope peptide (SEQ ID NO: 21) activates CD8 + The results of T cells are shown in fig. 2, which shows: the proportion of CD 8T cell activation in two different individuals (healthy human 1 and healthy human 2) was 4.93% and 5.64%, respectively, for MAGE-A3 epitope peptide (SEQ ID NO: 21).
The results illustrate: obtaining the CD8 with the specificity of MAGE-A3 epitope peptide (SEQ ID NO: 21) through in vitro antigen stimulation and tetra marker + T cells, after flow sorting, can be used for single cell transcriptome and TCR sequencing. Example 2 screening of TCR for the recognition of MAGE-A3 epitope peptide
1. Single cell transcriptome (scRNA-seq) sequencing and TCR repertoire sequencing (scTCR-seq)
Specific CD8 obtained in example 1 + T cells were subjected to single cell transcriptome sequencing and TCR sequencing, specifically:
the 10x Genomics's Chromium system uses an 8-channel microfluidic "double cross" crossover system to carry Gel Beads (Gel Beads), specific CD8, containing the barcode sequence + The T cells are mixed with a mixture of enzymes, oil, to form GEMs (water-in-oil microsystems). After formation of GEMs, specific CD8 + T cell lysis, gel beads autolysis interprets amplified amounts of barcode sequences. mRNA was then reverse transcribed to produce cDNA with 10 Xbarcode and UMI information, a standard transcriptome library was constructed using Chromium Single Cell 5'Feature Barcode Library Kit (10 Xgenomics) and standard TCR sequencing was constructed using Chromium Single Cell V (D) J engineering Kit (Human T Cell, 10X Genomics)And finally, sequencing the transcriptome library and the TCR library by using an Illumina Novaseq6000 platform to obtain scRNA-seq and scTCR-seq original Fastq data.
2. Single cell data analysis and TCR screening
(1) Obtaining scRNA-seq raw Fastq data in each sample (healthy person 1 and healthy person 2)
Cell-based barcode to distinguish each specific CD8 + T cells; distinguishing each mRNA molecule based on UMI; specific CD8 obtained by the existing marker Gene against step (2) of example 1 + T cells were clustered and UMAP visualization was performed on the results of cell clustering to give a total of 15 Cluster.
The results of cell grouping visualization are shown in FIG. 3, where Cluster0, cluster1, cluster6 and Cluster8 are defined as CCR 7high CD 8T; cluster2, cluster4, cluster5, cluster7, cluster9, cluster10 and Cluster13 are defined as effector CD 8T cell groups (effector CD 8T cells); cluster3, cluster11, cluster12 and Cluster14 are defined as a group of CD 8T cells (circulating CD 8T cells) in proliferation.
(2) Information on alpha and beta chains of each sample TCR was obtained based on scTCR-seq.
Counting the occurrence frequency of apha and beta chains of each sample TCR, and corresponding each sample TCR to the single cell transcriptome data obtained in the step (1) through a cell bar code to obtain the TCR information of MAGE-A3 epitope peptide specificity and the transcriptome information of the cell where the TCR is located, and carrying out UMAP visualization. The UMAP visualization results are shown in fig. 4, where the number of double-stranded paired TCRs is 3029, accounting for 44.92% of the total number of TCRs; the number of TCRs with clonal expansion (clonotype frequency > 1) was 1752, accounting for 25.92% of the total TCR.
(3) Referring to the method shown in the prior art (https:// doi. Org/10.1038/s 41592-020-01020-3), the CDR3 beta sequences of all TCR beta chains were converted by a biological sequence-to-digital conversion table (Atchley factor) into 30-dimensional TCR digital matrices of equal length with amino acid properties of polarity, secondary structure, molecular volume, codon diversity, etc., followed by construction of antigen-specific TCR predictive models using tessa and pMnet techniques.
(4) Screening to obtain 5 candidate MAGE-A3 antigen-specific TCRs based on the cell grouping result obtained in the step (1), the TCRapha and beta chain statistical result in the step (2) and the antigen-specific TCR prediction model constructed in the step (3); UMAP visualization was performed on the screened 5 candidate MAGE-A3 antigen-specific TCRs.
The results of the visualization of 5 candidate MAGE-A3 antigen-specific TCRs are shown in FIG. 5, which shows: 5 candidate MAGE-A3 antigen-specific TCRs are located in effector CD 8T cell populations (effector CD 8T cells) and in-proliferated CD 8T cell populations (cycling CD 8T cells); wherein TCR-A3-1 is the double-stranded TCR with the highest amplification frequency; TCR-A3-2 is the second highest TCR amplification frequency.
Based on the predicted results of the tessa and pMnet deep learning models, the rank value of TCR-A3-2 was 0.043, TCR-A3-2 being the TCR that was present in both samples (healthy person 1 and healthy person 2) and amplified most frequently.
Based on the prediction result of the tessa deep learning model, TCR-A3-103 is the central TCR of the maximum network in all TCRs with the clonal amplification (TCR frequency is more than or equal to 2) and all TCRs without the clonal amplification (TCR frequency is less than or equal to 2); based on the predicted result of the pMnet deep learning model, TCR-A3-207 was the highest clonotype amplified in all TCRs with rank value less than or equal to 2%, and rank value was 0.0033.
The information for the α and β chains of candidate MAGE-A3 antigen specific TCRs is shown in Table 1, with the α chain of TCR-A3-1 exemplified by CAVMDSNYQLIW being the amino acid sequence of the CDR3 region of the α chain of TCR-A3-1, the V region of the TCR upstream of the CDR3 region, and the J region of the TCR downstream of the CDR3 region (the β chain also including the C region).
TABLE 1 alpha and beta chain information for candidate MAGE-A3 antigen specific TCRs
Example 3 preparation of TCR-T cells
1. Experimental method
(1) Determination of alpha and beta chain sequences of TCR
The amino acid sequences of the V region, J region and C region of the alpha and beta chains of the TCR were found using the IMGT database (http:// www.imgt.org /) according to the information of the alpha and beta chains of the candidate MAGE-A3 antigen-specific TCR described in Table 1, and the V region, J region and CDR3 region were spliced according to the uniprot database (https:// www.uniprot.org /) query results (amino acid sequences corresponding to the respective TCR) to obtain the amino acid sequences of the alpha and beta chains of the TCR, as shown in Table 2.
TABLE 2 amino acid sequences of alpha and beta chains of TCR
(2) Construction of recombinant plasmids
Taking TCR-A3-1 as an example, a recombinant plasmid was constructed as follows:
synthesizing nucleic acid sequences encoding the alpha and beta chains of TCR-A3-1 shown in table 2 of step (1), ligating the nucleic acid sequences of the alpha and beta chains of TCR-A3-1 via a 2A self-cleaving peptide (SEQ ID NO: 22) to give a ligation fragment, and synchronously subcloning the ligation fragment into a vector via the cleavage sites 5'ecori (GAATTC) and 3' bamhi (GGATCC): in 18121 plasmid (https:// www.addgene.org/18121 /), 4. Mu.g of plasmid dry powder is obtained, the instant centrifugation is carried out for 3 min, 40. Mu.L of sterilized water is added to obtain 100 ng/. Mu.L of plasmid diluent, and the mixture is stirred uniformly and then is kept at room temperature for standby.
Mixing 1 mu L of plasmid diluent and 50 mu L of Stbl3 competent cells in an EP tube, standing on ice for 30min after uniform mixing, then carrying out water bath 60 and s in a water bath kettle at 42 ℃, inserting the EP tube into the ice after water bath is finished, and standing for 3 min to obtain the EP tube filled with the recombinant strain.
To the EP tube containing the recombinant strain, 300. Mu.L of LB liquid medium was added, and the mixture was placed in a shaking table and shaken at 37℃and 225rpm for 60 minutes to obtain a bacterial solution.
Wherein the LB liquid medium comprises: 5g of NaCl, 5g of tryptone, 2.5g of yeast powder and 500mL of UP water; mixing the above materials, cooling under high pressure, and preserving at 4deg.C to obtain LB liquid medium.
Inoculating 100 mu L of bacterial liquid onto an LB plate, uniformly coating the bacterial liquid on the LB plate by using a coating rod, sealing, inverting, and culturing overnight in an incubator at 37 ℃ for 12-16 hours to obtain a plate full of single bacteria.
Wherein the LB plate comprises: 5g of NaCl, 5g of tryptone, 5g of yeast powder, 10g of agar powder and 500mL of UP water; mixing the above materials, heating, cooling to 50deg.C under high pressure, adding Amp to final concentration of 50 μg/mL, shaking, pouring into sterile culture dish, and preserving at 4deg.C to obtain LB plate.
200mL of LB liquid culture medium is taken, amp is added until the final concentration of Amp is 50 mug/mL, and after uniform mixing, the mixture is split into sterile shaking tubes (10 mL/tube) to obtain the Amp-resistant LB liquid culture medium.
Picking single bacteria on a flat plate full of single bacteria, placing the single bacteria in a shaking tube containing 10mL of Amp-resistant LB liquid culture medium, placing the shaking tube added with the single bacteria in a shaking table, and shaking the shaking table at 37 ℃ and 225rpm for 12-16 hours to obtain a shaking bacterial liquid.
Subpackaging the shaken bacterial solution into an EP tube, centrifuging at 1300rpm for 1min, collecting bacterial precipitate, extracting plasmid in the bacterial precipitate with EndoFree Plasmid Midi Kit (Cwbio, cat#CW2105S) to obtain recombinant plasmid (TCR-A3-1), detecting the concentration of the recombinant plasmid (TCR-A3-1) with a spectrophotometer, and storing at-80deg.C for use.
The TCR-A3-2, TCR-A3-12, TCR-A3-103 and TCR-A3-207 in the step (1) were treated equally to prepare a recombinant plasmid (TCR-A3-2), a recombinant plasmid (TCR-A3-12), a recombinant plasmid (TCR-A3-103) and a recombinant plasmid (TCR-A3-207), and the concentrations of the respective recombinant plasmids were measured by a spectrophotometer.
(3) Lentivirus package
Taking recombinant plasmid (TCR-A3-1) as an example, lentiviral packaging was performed as follows:
taking 5×10 6 The 293T cells were spread in 10cm dishes at 37℃with 5% CO 2 (vAnd/v) culturing in an incubator until the confluence is 70-90%, and replacing the culture medium with a fresh DEME high-sugar culture medium to obtain the 293T cells to be transfected.
To EP tube 1, 28. Mu.L of Lipo8000 transfection reagent (Beyotime, cat#C0533) and 272. Mu.L of Opti-MEM medium (Gibco, cat# 31985070) were added, and the mixture was allowed to stand at room temperature for 5min.
Mu.g of pCMV-VSV-G plasmid, 3. Mu.g of pMDLg pRRE plasmid, 3. Mu.g of pRSV-Rev plasmid, 9. Mu.g of the recombinant plasmid (TCR-A3-1) obtained in step (2) were added to EP tube 2, and the whole was supplemented with Opti-MEM medium (Gibco, cat # 31985070) to 300. Mu.L and allowed to stand at room temperature for 5min.
Adding the liquid in the EP pipe 1 into the EP pipe 2, uniformly mixing, and standing at room temperature for 20min to obtain a mixed liquid. Adding the mixed solution into DEME high sugar culture medium containing 293T cells to be transfected dropwise, shaking, standing at 37deg.C, and 5% CO 2 (v/v) culturing in an incubator for 6 hours, and then replacing the culture medium with a new DMEM high-sugar culture medium in a biosafety cabinet for transfection.
After 24h transfection, observing the cell state, wherein the cell is pollution-free and has good growth state (pollution-free and cell is not fallen off in large pieces); after 48 hours of transfection, collecting cell supernatant liquid to obtain virus liquid 1; after 72h transfection, the supernatant fluid of the cells was collected to obtain virus liquid 2. Virus solution 1 and virus solution 2 were mixed and centrifuged at 3500rpm for 10min, the supernatant was collected and filtered with a 0.45 μm filter into a new centrifuge tube to obtain a filtrate, which was concentrated with a universal virus concentration kit (Beyotime, cat#c2901L) to obtain a virus concentrate (TCR-A3-1) and placed in a 1.5mL EP tube for use.
And (3) carrying out equivalent treatment on the recombinant plasmid (TCR-A3-2), the recombinant plasmid (TCR-A3-12), the recombinant plasmid (TCR-A3-103) and the recombinant plasmid (TCR-A3-207) obtained in the step (2) to obtain a virus concentrate (TCR-A3-2), a virus concentrate (TCR-A3-12), a virus concentrate (TCR-A3-103) and a virus concentrate (TCR-A3-207).
(4) Lentivirus infects cells
Taking the virus concentrate (TCR-A3-1) obtained in the step (3) as an example, the Jurkat76 cells are infected as follows:
taking Jurkat76 fine powder in logarithmic growth phaseCells, 400. Mu.L of Jurkat76 cells (2.5X10) were prepared with RPMI-1640 complete medium 5 mu.L of the virus concentrate (TCR-A3-1) obtained in step (3) was added thereto at a rate of 0/mL) in RPMI-1640 complete medium: polybrene=1 mL: polybrene was added at 10mg/mL in 0.5. Mu.L to give post-transfection cells.
The transfected cells were seeded into 24-well plates, centrifuged at 1000 Xg for 60min, then placed at 37℃in 5% CO 2 (v/v) culturing in an incubator for 12-16 h, and changing the liquid. 4 days after infection, cells from 24 well plates were collected in 1.5mL EP tubes, centrifuged at 200 Xg for 5min, the supernatant was discarded, the pellet was resuspended in 100. Mu.L of 1% BSA (1 g BSA+100mL PBS) to give a heavy suspension, 2. Mu.L of TCR. Alpha./beta. -APC antibody (BioLegend, cat # 306718) was added to the heavy suspension for staining, and the expression results of TCR-A3-1 were observed on-stream, and cells positive for expression were TCR-T cells (TCR-A3-1).
The Jurkat79 cells were infected with the virus concentrate (TCR-A3-2), the virus concentrate (TCR-A3-12), the virus concentrate (TCR-A3-103) and the virus concentrate (TCR-A3-207) obtained in the step (3), and TCR expression results were observed by parallel flow of the machine to obtain TCR-T cells (TCR-A3-2), TCR-T cells (TCR-A3-12), TCR-T cells (TCR-A3-103) and TCR-T cells (TCR-A3-207), respectively.
Blank (WT) set as Jurkat76 wild-type cells (WT, not expressing TCR by itself); control (18121) was set up as Jurkat76 cells transfected with 18121 empty plasmid.
TCR expression results were observed on-stream for the blank (WT) and control (18121) groups, respectively.
2. Experimental results
The spectrophotometric detection results of each recombinant plasmid are shown in Table 3.
TABLE 3 spectrophotometric detection results of recombinant plasmids
| Recombinant plasmid name | Concentration (μg/μl) | A260/A280 |
| Recombinant plasmid (TCR-A3-1) | 223.1 | 1.89 |
| Recombinant plasmid (TCR-A3-2) | 472.4 | 1.87 |
| Recombinant plasmid (TCR-A3-12) | 274.5 | 1.88 |
| Recombinant plasmid (TCR-A3-103) | 199.5 | 1.89 |
| Recombinant plasmid (TCR-A3-207) | 199.3 | 1.89 |
The results show that: the A260/A280 of the 5 recombinant plasmids has the value of 1.80-2.0 and can be used for lentivirus packaging.
The detection result of the flow type on-line is shown in fig. 6, and the result shows that: the TCR-positive rate for the blank (WT) was 0% and the TCR-positive rate for the control (18121) was 0.8%, indicating that Jurkat76 cells and 18121 plasmid did not express TCR; the TCR positive rate of TCR-T cells (TCR-A3-1) was 93.2%, the TCR positive rate of TCR-T cells (TCR-A3-2) was 94%, the TCR positive rate of TCR-T cells (TCR-A3-12) was 94.7%, the TCR positive rate of TCR-T cells (TCR-A3-103) was 93.2%, and the TCR positive rate of TCR-T cells (TCR-A3-207) was 92.9%. The results illustrate: TCR-T cells constructed from each recombinant plasmid can efficiently express TCRs.
Example 4TCR-T cell function
1. Experimental method
PC9 cells (human non-small cell lung cancer cells) in logarithmic growth phase were treated with 20. Mu.g/mL mitomycin for 30min followed by 0.75X10 5 48-well plates were placed at 37℃in 5% CO 2 Culturing for 12h in an incubator of (v/v), and adding the TCR-T cells constructed in the example 3 for co-culturing after the cells are attached (the cell ratio is 1:1).
The experimental group and the control group are respectively arranged in different culture mediums, and the experimental group and the control group are specifically as follows:
blank group: PC9 cells were cultured alone;
18121ctrl group: co-culturing PC9 cells and Jurkat76 cells transfected with 18121 empty plasmid;
flu ctrl group: PC9 cells and Jurkat76-flu-TCR cells were co-cultured; wherein the Jurkat76-Flu-TCR cell is obtained by transferring influenza double-chain TCR (Flu-TCR) into Jurkat76 cells;
TCR-A3-1 group: co-culturing PC9 cells and TCR-T cells (TCR-A3-1);
TCR-A3-2 group: co-culturing PC9 cells and TCR-T cells (TCR-A3-2);
TCR-A3-12 group: co-culturing PC9 cells and TCR-T cells (TCR-A3-12);
TCR-A3-103 groups: PC9 cells and TCR-T cells (TCR-A3-103) were co-cultured;
TCR-A3-207 group: PC9 cells and TCR-T cells (TCR-A3-207) were co-cultured.
Taking TCR-A3-1 group as an example, the detection is performed as follows:
cell culture was performed with co-stimulation of 1. Mu.g/mL of anti-human CD28 antibody and 50IU/mL of IL-2, and the medium was supplemented with 50IU/mL of IL-2 every two days during the culture.
1.1 flow cytometry to detect cell activation
After 16h incubation, the Jurkat76 cells were flow-tested by staining with CD69-PerCP (BioLegend, cat # 310928) antibodies to CD137-APC (BioLegend, cat # 309810).
1.2CCK8 detection of target cell survival
After 72h of incubation, 10. Mu.L of CCK8 detection reagent (Beyotime, cat#C0038) was added to each well cell, and absorbance was measured at 450nm after incubation for 1h in an incubator.
1.3Hoechst staining detection of killing effect on target cells
After 72h of incubation, the cell culture supernatant was aspirated, 200. Mu.L of Hoechst 33342 staining solution (5. Mu.g/mL) was added, staining was performed at room temperature in the dark for 10min, the staining solution was removed, washed 2 times with PBS, and the cells were photographed under a fluorescent microscope to record PC9 cell survival.
Each group was treated equally, and the detection observation was performed.
2. Experimental results
2.1 cell activation Condition
The results of the cell activation assay for each group are shown in FIG. 7, wherein the results of CD69 expression in cells are shown in FIGS. 7A and 7C, and the results show that: the proportion of cells expressing CD69 was significantly increased (P < 0.001) in the TCR-A3-1, TCR-A3-2, TCR-A3-12, TCR-A3-103 and TCR-A3-207 groups compared to the 18121ctrl group; the results of CD137 expression in cells are shown in fig. 7B and 7D, which show that: the proportion of cells expressing CD137 was significantly increased (P < 0.001) in the TCR-A3-1, TCR-A3-2, TCR-A3-12, TCR-A3-103 and TCR-A3-207 groups compared to the 18121ctrl group; and the results of fig. 7 show: the ratio of cells expressing CD69 and expressing CD137 did not change significantly in the Flu ctrl group compared to the 18121ctrl group.
The results illustrate: the TCR-T cells constructed from 5 TCRs shown in Table 2 can specifically recognize MAGE-A3 epitope peptide on the surface of PC9 cells (target cells) and can be activated by the target cells (PC 9 cells).
2.2 target cell survival
The results of CCK8 detection of absorbance of cells from each well are shown in FIG. 8, and the results show that there is no significant difference in OD value in Flu ctrl group compared with 18121ctrl group, while the OD values in TCR-A3-1 group, TCR-A3-2 group, TCR-A3-12 group, TCR-A3-103 group and TCR-A3-207 group are significantly reduced (P < 0.01), indicating that the number of surviving PC9 cells is significantly reduced.
2.3 target cell killing Condition
The results of Hoechst staining detection observation are shown in fig. 9, and the results show that: there was no significant difference in the number of surviving PC9 cells in the Flu ctrl group compared to 18121ctrl group, while the number of surviving PC9 cells in the TCR-A3-1 group, TCR-A3-2 group, TCR-A3-12 group, TCR-A3-103 group and TCR-A3-207 group was significantly reduced (P < 0.001).
The results illustrate: the TCR-T cells constructed by 5 TCRs shown in Table 2 can specifically recognize MAGE-A3 epitope peptide on the surface of PC9 cells (target cells) and can play an obvious role in killing the PC9 cells.
Finally, it should be noted that the above embodiments are merely for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and that other various changes and modifications can be made by one skilled in the art based on the above description and the idea, and it is not necessary or exhaustive of all the embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (6)
1. A T cell receptor that recognizes a MAGE-A3 antigen oligopeptide, wherein said T cell receptor comprises the amino acid sequence of SEQ ID NO:12 and the amino acid sequence of the TCR alpha peptide chain is shown in SEQ ID NO: 17.
2. A TCR-T cell comprising the T cell receptor of claim 1.
3. A recombinant expression vector comprising nucleotide sequences encoding the TCR α and TCR β chains of claim 1.
4. A host cell comprising the T cell receptor of claim 1 and/or the recombinant expression vector of claim 3.
5. A pharmaceutical composition comprising one or more of the T cell receptor of claim 1, the TCR-T cell of claim 2, the recombinant expression vector of claim 3, and/or the host cell of claim 4, and a pharmaceutically acceptable carrier.
6. Use of the T cell receptor of claim 1, the TCR-T cell of claim 2, the recombinant expression vector of claim 3, the host cell of claim 4 and/or the pharmaceutical composition of claim 5 for the preparation of an anti-tumor medicament;
the antitumor agent is an antitumor agent selected from the group consisting of an antitumor agent, an anti-melanoma agent, an anti-liver cancer agent, an antitumor agent selected from the group consisting of a head and neck tumor agent, an anti-esophageal cancer agent, and an anti-osteosarcoma agent.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311794907.5A CN117946247A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
| CN202310168724.6A CN116813744B (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
| CN202311794886.7A CN117986350A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
| CN202311793123.0A CN117946246A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
| CN202311792928.3A CN117946245A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310168724.6A CN116813744B (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
Related Child Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311794907.5A Division CN117946247A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
| CN202311793123.0A Division CN117946246A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
| CN202311792928.3A Division CN117946245A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
| CN202311794886.7A Division CN117986350A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116813744A CN116813744A (en) | 2023-09-29 |
| CN116813744B true CN116813744B (en) | 2024-02-23 |
Family
ID=88141777
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311792928.3A Pending CN117946245A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
| CN202311794886.7A Pending CN117986350A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
| CN202310168724.6A Active CN116813744B (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
| CN202311793123.0A Pending CN117946246A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
| CN202311794907.5A Pending CN117946247A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311792928.3A Pending CN117946245A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
| CN202311794886.7A Pending CN117986350A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311793123.0A Pending CN117946246A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
| CN202311794907.5A Pending CN117946247A (en) | 2023-02-23 | 2023-02-23 | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (5) | CN117946245A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103974974A (en) * | 2011-09-15 | 2014-08-06 | 美国卫生和人力服务部 | T cell receptors recognizing HLA-A1- or HLA-CW7-restricted MAGE |
| CN104968675A (en) * | 2012-09-14 | 2015-10-07 | 美国政府卫生与公众服务部 | T cell receptors recognizing MHC class II-restricted MAGE-A3 |
| WO2018097951A1 (en) * | 2016-11-22 | 2018-05-31 | The United States Of America, As Represented By The Secretary, Department Of Health And Human Services | Anti-mage-a3/a6 antibodies |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113795586A (en) * | 2019-03-25 | 2021-12-14 | 大学健康网络 | T cell receptors and methods of use thereof |
-
2023
- 2023-02-23 CN CN202311792928.3A patent/CN117946245A/en active Pending
- 2023-02-23 CN CN202311794886.7A patent/CN117986350A/en active Pending
- 2023-02-23 CN CN202310168724.6A patent/CN116813744B/en active Active
- 2023-02-23 CN CN202311793123.0A patent/CN117946246A/en active Pending
- 2023-02-23 CN CN202311794907.5A patent/CN117946247A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103974974A (en) * | 2011-09-15 | 2014-08-06 | 美国卫生和人力服务部 | T cell receptors recognizing HLA-A1- or HLA-CW7-restricted MAGE |
| CN104968675A (en) * | 2012-09-14 | 2015-10-07 | 美国政府卫生与公众服务部 | T cell receptors recognizing MHC class II-restricted MAGE-A3 |
| WO2018097951A1 (en) * | 2016-11-22 | 2018-05-31 | The United States Of America, As Represented By The Secretary, Department Of Health And Human Services | Anti-mage-a3/a6 antibodies |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117946246A (en) | 2024-04-30 |
| CN116813744A (en) | 2023-09-29 |
| CN117946245A (en) | 2024-04-30 |
| CN117986350A (en) | 2024-05-07 |
| CN117946247A (en) | 2024-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113121676B (en) | Specific T cell receptor targeting cytomegalovirus antigen and application thereof | |
| CN109111525B (en) | HLA-G chimeric antigen receptor, coding sequence, expression vector and application | |
| CN105861531B (en) | Chimeric antigen receptor T cell and preparation method thereof | |
| CN109055430A (en) | A kind of preparation method for co-expressing IL18 and CCL19 albumen and targeting MUC1 gene C AR-T cell | |
| CN109467604A (en) | Chimeric antigen receptor DAP12-T2A-CD8 α-CD19scFv-TREM1 and application thereof | |
| CN114230658A (en) | Novel coronavirus-specific T cell receptor and uses thereof | |
| CN116144599A (en) | Immune cell for killing escape variant NK cells and application thereof | |
| US20230138309A1 (en) | Methods of isolating t-cells and t-cell receptors from tumor by single-cell analysis for immunotherapy | |
| CN110172089A (en) | A kind of more antigen combinations of KRAS mutation, targeting KRAS mutation tumour CTL and its application | |
| CN116813744B (en) | T cell receptor for recognizing MAGE-A3 antigen short peptide and application thereof | |
| CN111849914A (en) | TCR-T cell for killing tumor and preparation method and application thereof | |
| CN111518217A (en) | Chimeric antigen receptor targeting CD22 molecule | |
| CN109136284B (en) | AFFT2 cell | |
| CN116103233A (en) | Tumor draining lymph node antigen reactive CD8 + T cell identification method | |
| US11359012B1 (en) | Specific chimeric antigen receptor cells targeting human CLDN18A2, preparation method and application thereof | |
| CN105821064B (en) | T cell antigen receptor gene and application thereof | |
| CN109503717A (en) | Chimeric antigen receptor DAP12-T2A-CD8 α-CD19scfv-NKp44 and application thereof | |
| CN115286698A (en) | Application of antigen short peptide in screening drugs for treating HPV (human papilloma Virus) related diseases and screened TCR (T cell receptor) thereof | |
| JP7448974B2 (en) | reverse immunosuppression | |
| CN109679917B (en) | LRFFT2 cell | |
| CN117003855B (en) | T cell receptor and application thereof | |
| US20030165479A1 (en) | Methods for isolating proteins expressed by dendritic cells | |
| CN110129374B (en) | Construction method of RFFT (radiofrequency FT) cells | |
| CN109280643B (en) | RFFT cell | |
| WO2023179795A1 (en) | Method for rapidly, simply and conveniently obtaining correctly paired tcrs, and obtained tcrs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |