WO2005042579A1 - 抗sarsウイルス抗体、該抗体を産生するハイブリドーマ及び該抗体を用いる免疫測定試薬 - Google Patents
抗sarsウイルス抗体、該抗体を産生するハイブリドーマ及び該抗体を用いる免疫測定試薬 Download PDFInfo
- Publication number
- WO2005042579A1 WO2005042579A1 PCT/JP2004/016099 JP2004016099W WO2005042579A1 WO 2005042579 A1 WO2005042579 A1 WO 2005042579A1 JP 2004016099 W JP2004016099 W JP 2004016099W WO 2005042579 A1 WO2005042579 A1 WO 2005042579A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antibody
- monoclonal antibody
- hybridoma
- sars
- rsn
- Prior art date
Links
- 239000003153 chemical reaction reagent Substances 0.000 title claims abstract description 58
- 238000003018 immunoassay Methods 0.000 title claims abstract description 52
- 241000700605 Viruses Species 0.000 title claims description 64
- 210000004408 hybridoma Anatomy 0.000 title claims description 56
- 201000003176 Severe Acute Respiratory Syndrome Diseases 0.000 claims abstract description 57
- 241000315672 SARS coronavirus Species 0.000 claims abstract description 53
- 241000711573 Coronaviridae Species 0.000 claims abstract description 12
- 239000011159 matrix material Substances 0.000 claims description 46
- 239000000427 antigen Substances 0.000 claims description 42
- 102000036639 antigens Human genes 0.000 claims description 42
- 108091007433 antigens Proteins 0.000 claims description 42
- 238000001514 detection method Methods 0.000 claims description 41
- 239000012634 fragment Substances 0.000 claims description 31
- 238000002372 labelling Methods 0.000 claims description 28
- 102000011931 Nucleoproteins Human genes 0.000 claims description 27
- 108010061100 Nucleoproteins Proteins 0.000 claims description 27
- 239000007790 solid phase Substances 0.000 claims description 25
- 239000000758 substrate Substances 0.000 claims description 25
- 230000027455 binding Effects 0.000 claims description 24
- 102000004190 Enzymes Human genes 0.000 claims description 23
- 108090000790 Enzymes Proteins 0.000 claims description 23
- 230000002163 immunogen Effects 0.000 claims description 20
- 125000003275 alpha amino acid group Chemical group 0.000 claims description 18
- 238000012360 testing method Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 210000000628 antibody-producing cell Anatomy 0.000 claims description 4
- 210000004881 tumor cell Anatomy 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims description 3
- 239000002773 nucleotide Substances 0.000 claims description 2
- 125000003729 nucleotide group Chemical group 0.000 claims description 2
- 239000013598 vector Substances 0.000 claims description 2
- 102000007999 Nuclear Proteins Human genes 0.000 abstract description 10
- 108010089610 Nuclear Proteins Proteins 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 63
- 239000000243 solution Substances 0.000 description 50
- 239000000523 sample Substances 0.000 description 47
- 101710141454 Nucleoprotein Proteins 0.000 description 26
- 210000004027 cell Anatomy 0.000 description 26
- 108090000623 proteins and genes Proteins 0.000 description 26
- 239000007788 liquid Substances 0.000 description 24
- 108090000765 processed proteins & peptides Proteins 0.000 description 24
- 229940088598 enzyme Drugs 0.000 description 20
- 239000012228 culture supernatant Substances 0.000 description 19
- 238000005259 measurement Methods 0.000 description 19
- 235000018102 proteins Nutrition 0.000 description 16
- 102000004169 proteins and genes Human genes 0.000 description 16
- 235000001014 amino acid Nutrition 0.000 description 15
- 239000000126 substance Substances 0.000 description 15
- 150000001413 amino acids Chemical class 0.000 description 14
- 239000002245 particle Substances 0.000 description 14
- 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 description 13
- 241001465754 Metazoa Species 0.000 description 13
- 238000010521 absorption reaction Methods 0.000 description 13
- 239000000872 buffer Substances 0.000 description 11
- 239000011534 wash buffer Substances 0.000 description 11
- 238000005406 washing Methods 0.000 description 11
- 102000002260 Alkaline Phosphatase Human genes 0.000 description 10
- 108020004774 Alkaline Phosphatase Proteins 0.000 description 10
- 241000699666 Mus <mouse, genus> Species 0.000 description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 10
- 239000012528 membrane Substances 0.000 description 10
- 230000009257 reactivity Effects 0.000 description 10
- 238000002965 ELISA Methods 0.000 description 8
- 210000002966 serum Anatomy 0.000 description 8
- 108091003079 Bovine Serum Albumin Proteins 0.000 description 7
- 239000002250 absorbent Substances 0.000 description 7
- 229940098773 bovine serum albumin Drugs 0.000 description 7
- 238000003317 immunochromatography Methods 0.000 description 7
- 108010045069 keyhole-limpet hemocyanin Proteins 0.000 description 7
- 239000004816 latex Substances 0.000 description 7
- 229920000126 latex Polymers 0.000 description 7
- 230000036961 partial effect Effects 0.000 description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000002609 medium Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 229920001184 polypeptide Polymers 0.000 description 6
- 102000004196 processed proteins & peptides Human genes 0.000 description 6
- 210000004369 blood Anatomy 0.000 description 5
- 239000008280 blood Substances 0.000 description 5
- 239000001913 cellulose Substances 0.000 description 5
- 229920002678 cellulose Polymers 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 230000003053 immunization Effects 0.000 description 5
- 208000015181 infectious disease Diseases 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000003118 sandwich ELISA Methods 0.000 description 5
- 239000011780 sodium chloride Substances 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 210000001519 tissue Anatomy 0.000 description 5
- YBJHBAHKTGYVGT-ZKWXMUAHSA-N (+)-Biotin Chemical compound N1C(=O)N[C@@H]2[C@H](CCCCC(=O)O)SC[C@@H]21 YBJHBAHKTGYVGT-ZKWXMUAHSA-N 0.000 description 4
- QKNYBSVHEMOAJP-UHFFFAOYSA-N 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydron;chloride Chemical compound Cl.OCC(N)(CO)CO QKNYBSVHEMOAJP-UHFFFAOYSA-N 0.000 description 4
- 241000588724 Escherichia coli Species 0.000 description 4
- 241000282412 Homo Species 0.000 description 4
- 108060003951 Immunoglobulin Proteins 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 4
- 206010035226 Plasma cell myeloma Diseases 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 4
- AVKUERGKIZMTKX-NJBDSQKTSA-N ampicillin Chemical compound C1([C@@H](N)C(=O)N[C@H]2[C@H]3SC([C@@H](N3C2=O)C(O)=O)(C)C)=CC=CC=C1 AVKUERGKIZMTKX-NJBDSQKTSA-N 0.000 description 4
- 229960000723 ampicillin Drugs 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000011088 calibration curve Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 102000018358 immunoglobulin Human genes 0.000 description 4
- 201000000050 myeloid neoplasm Diseases 0.000 description 4
- 239000000123 paper Substances 0.000 description 4
- 102000013415 peroxidase activity proteins Human genes 0.000 description 4
- 108040007629 peroxidase activity proteins Proteins 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 239000008363 phosphate buffer Substances 0.000 description 4
- 230000028327 secretion Effects 0.000 description 4
- 238000002415 sodium dodecyl sulfate polyacrylamide gel electrophoresis Methods 0.000 description 4
- 210000000952 spleen Anatomy 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000001262 western blot Methods 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 241000699670 Mus sp. Species 0.000 description 3
- 239000000020 Nitrocellulose Substances 0.000 description 3
- 229920001213 Polysorbate 20 Polymers 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000002671 adjuvant Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 210000001124 body fluid Anatomy 0.000 description 3
- 239000010839 body fluid Substances 0.000 description 3
- 238000004113 cell culture Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 238000001962 electrophoresis Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000013604 expression vector Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- -1 for example Proteins 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 239000013642 negative control Substances 0.000 description 3
- 229920001220 nitrocellulos Polymers 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 3
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000000941 radioactive substance Substances 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 125000003396 thiol group Chemical group [H]S* 0.000 description 3
- 239000003656 tris buffered saline Substances 0.000 description 3
- 230000009385 viral infection Effects 0.000 description 3
- ZTOJFFHGPLIVKC-YAFCTCPESA-N (2e)-3-ethyl-2-[(z)-(3-ethyl-6-sulfo-1,3-benzothiazol-2-ylidene)hydrazinylidene]-1,3-benzothiazole-6-sulfonic acid Chemical compound S\1C2=CC(S(O)(=O)=O)=CC=C2N(CC)C/1=N/N=C1/SC2=CC(S(O)(=O)=O)=CC=C2N1CC ZTOJFFHGPLIVKC-YAFCTCPESA-N 0.000 description 2
- 206010003445 Ascites Diseases 0.000 description 2
- 108090000565 Capsid Proteins Proteins 0.000 description 2
- 102100023321 Ceruloplasmin Human genes 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- 241001198387 Escherichia coli BL21(DE3) Species 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 102000007056 Recombinant Fusion Proteins Human genes 0.000 description 2
- 108010008281 Recombinant Fusion Proteins Proteins 0.000 description 2
- 101001024647 Severe acute respiratory syndrome coronavirus Nucleoprotein Proteins 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- SXEHKFHPFVVDIR-UHFFFAOYSA-N [4-(4-hydrazinylphenyl)phenyl]hydrazine Chemical compound C1=CC(NN)=CC=C1C1=CC=C(NN)C=C1 SXEHKFHPFVVDIR-UHFFFAOYSA-N 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 2
- 238000001042 affinity chromatography Methods 0.000 description 2
- 230000004520 agglutination Effects 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229960002685 biotin Drugs 0.000 description 2
- 235000020958 biotin Nutrition 0.000 description 2
- 239000011616 biotin Substances 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 230000007910 cell fusion Effects 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 239000003593 chromogenic compound Substances 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 235000018417 cysteine Nutrition 0.000 description 2
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 239000013613 expression plasmid Substances 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000002649 immunization Methods 0.000 description 2
- 238000010166 immunofluorescence Methods 0.000 description 2
- BPHPUYQFMNQIOC-NXRLNHOXSA-N isopropyl beta-D-thiogalactopyranoside Chemical compound CC(C)S[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O BPHPUYQFMNQIOC-NXRLNHOXSA-N 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 210000004698 lymphocyte Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920005615 natural polymer Polymers 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 108020004707 nucleic acids Proteins 0.000 description 2
- 102000039446 nucleic acids Human genes 0.000 description 2
- 150000007523 nucleic acids Chemical class 0.000 description 2
- YBYRMVIVWMBXKQ-UHFFFAOYSA-N phenylmethanesulfonyl fluoride Chemical compound FS(=O)(=O)CC1=CC=CC=C1 YBYRMVIVWMBXKQ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000013612 plasmid Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 238000003757 reverse transcription PCR Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 235000020183 skimmed milk Nutrition 0.000 description 2
- 238000000527 sonication Methods 0.000 description 2
- 210000004989 spleen cell Anatomy 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 208000024891 symptom Diseases 0.000 description 2
- 229920001059 synthetic polymer Polymers 0.000 description 2
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 2
- WWYNJERNGUHSAO-XUDSTZEESA-N (+)-Norgestrel Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](CC)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 WWYNJERNGUHSAO-XUDSTZEESA-N 0.000 description 1
- PVGATNRYUYNBHO-UHFFFAOYSA-N (2,5-dioxopyrrolidin-1-yl) 4-(2,5-dioxopyrrol-1-yl)butanoate Chemical compound O=C1CCC(=O)N1OC(=O)CCCN1C(=O)C=CC1=O PVGATNRYUYNBHO-UHFFFAOYSA-N 0.000 description 1
- 125000003088 (fluoren-9-ylmethoxy)carbonyl group Chemical group 0.000 description 1
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 description 1
- ZXIRKECXSYACFD-UHFFFAOYSA-N 1h-indol-2-yl dihydrogen phosphate Chemical compound C1=CC=C2NC(OP(O)(=O)O)=CC2=C1 ZXIRKECXSYACFD-UHFFFAOYSA-N 0.000 description 1
- NHBKXEKEPDILRR-UHFFFAOYSA-N 2,3-bis(butanoylsulfanyl)propyl butanoate Chemical compound CCCC(=O)OCC(SC(=O)CCC)CSC(=O)CCC NHBKXEKEPDILRR-UHFFFAOYSA-N 0.000 description 1
- BNKQFTFTSQDHMT-UHFFFAOYSA-N 3-phenyldioxetane;sodium Chemical compound [Na].[Na].C1OOC1C1=CC=CC=C1 BNKQFTFTSQDHMT-UHFFFAOYSA-N 0.000 description 1
- NCPQROHLJFARLL-UHFFFAOYSA-N 4-(2,5-dioxopyrrol-1-yl)butanoic acid Chemical compound OC(=O)CCCN1C(=O)C=CC1=O NCPQROHLJFARLL-UHFFFAOYSA-N 0.000 description 1
- YRNWIFYIFSBPAU-UHFFFAOYSA-N 4-[4-(dimethylamino)phenyl]-n,n-dimethylaniline Chemical compound C1=CC(N(C)C)=CC=C1C1=CC=C(N(C)C)C=C1 YRNWIFYIFSBPAU-UHFFFAOYSA-N 0.000 description 1
- HUDPLKWXRLNSPC-UHFFFAOYSA-N 4-aminophthalhydrazide Chemical compound O=C1NNC(=O)C=2C1=CC(N)=CC=2 HUDPLKWXRLNSPC-UHFFFAOYSA-N 0.000 description 1
- LVSPDZAGCBEQAV-UHFFFAOYSA-N 4-chloronaphthalen-1-ol Chemical compound C1=CC=C2C(O)=CC=C(Cl)C2=C1 LVSPDZAGCBEQAV-UHFFFAOYSA-N 0.000 description 1
- ARQXEQLMMNGFDU-UHFFFAOYSA-N 4MUG Natural products C1=CC=2C(C)=CC(=O)OC=2C=C1OC1OC(C(O)=O)C(O)C(O)C1O ARQXEQLMMNGFDU-UHFFFAOYSA-N 0.000 description 1
- WOJKKJKETHYEAC-UHFFFAOYSA-N 6-Maleimidocaproic acid Chemical compound OC(=O)CCCCCN1C(=O)C=CC1=O WOJKKJKETHYEAC-UHFFFAOYSA-N 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 102000014914 Carrier Proteins Human genes 0.000 description 1
- 108010078791 Carrier Proteins Proteins 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 230000006820 DNA synthesis Effects 0.000 description 1
- BVTJGGGYKAMDBN-UHFFFAOYSA-N Dioxetane Chemical compound C1COO1 BVTJGGGYKAMDBN-UHFFFAOYSA-N 0.000 description 1
- 208000000059 Dyspnea Diseases 0.000 description 1
- 206010013975 Dyspnoeas Diseases 0.000 description 1
- 102000002464 Galactosidases Human genes 0.000 description 1
- 108010093031 Galactosidases Proteins 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 102000001706 Immunoglobulin Fab Fragments Human genes 0.000 description 1
- 108010054477 Immunoglobulin Fab Fragments Proteins 0.000 description 1
- 102000008394 Immunoglobulin Fragments Human genes 0.000 description 1
- 108010021625 Immunoglobulin Fragments Proteins 0.000 description 1
- XUJNEKJLAYXESH-REOHCLBHSA-N L-Cysteine Chemical compound SC[C@H](N)C(O)=O XUJNEKJLAYXESH-REOHCLBHSA-N 0.000 description 1
- PEEHTFAAVSWFBL-UHFFFAOYSA-N Maleimide Chemical compound O=C1NC(=O)C=C1 PEEHTFAAVSWFBL-UHFFFAOYSA-N 0.000 description 1
- 241000124008 Mammalia Species 0.000 description 1
- 241000711408 Murine respirovirus Species 0.000 description 1
- 108090000526 Papain Proteins 0.000 description 1
- 241000237988 Patellidae Species 0.000 description 1
- 102000057297 Pepsin A Human genes 0.000 description 1
- 108090000284 Pepsin A Proteins 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004365 Protease Substances 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 241000978776 Senegalia senegal Species 0.000 description 1
- 229920002684 Sepharose Polymers 0.000 description 1
- 108010071390 Serum Albumin Proteins 0.000 description 1
- 102000007562 Serum Albumin Human genes 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 239000013504 Triton X-100 Substances 0.000 description 1
- 229920004890 Triton X-100 Polymers 0.000 description 1
- WJKJJGXZRHDNTN-UWVGGRQHSA-N Tyr-Cys Chemical compound SC[C@@H](C(O)=O)NC(=O)[C@@H](N)CC1=CC=C(O)C=C1 WJKJJGXZRHDNTN-UWVGGRQHSA-N 0.000 description 1
- XYIPYISRNJUPBA-UHFFFAOYSA-N [3-(3'-methoxyspiro[adamantane-2,4'-dioxetane]-3'-yl)phenyl] dihydrogen phosphate Chemical compound O1OC2(C3CC4CC(C3)CC2C4)C1(OC)C1=CC=CC(OP(O)(O)=O)=C1 XYIPYISRNJUPBA-UHFFFAOYSA-N 0.000 description 1
- 210000000683 abdominal cavity Anatomy 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000011481 absorbance measurement Methods 0.000 description 1
- ZTOJFFHGPLIVKC-CLFAGFIQSA-N abts Chemical compound S/1C2=CC(S(O)(=O)=O)=CC=C2N(CC)C\1=N\N=C1/SC2=CC(S(O)(=O)=O)=CC=C2N1CC ZTOJFFHGPLIVKC-CLFAGFIQSA-N 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 239000008351 acetate buffer Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- HAXFWIACAGNFHA-UHFFFAOYSA-N aldrithiol Chemical compound C=1C=CC=NC=1SSC1=CC=CC=N1 HAXFWIACAGNFHA-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000003460 anti-nuclear Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- WQZGKKKJIJFFOK-FPRJBGLDSA-N beta-D-galactose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@H]1O WQZGKKKJIJFFOK-FPRJBGLDSA-N 0.000 description 1
- 102000005936 beta-Galactosidase Human genes 0.000 description 1
- 108010005774 beta-Galactosidase Proteins 0.000 description 1
- UDSAIICHUKSCKT-UHFFFAOYSA-N bromophenol blue Chemical compound C1=C(Br)C(O)=C(Br)C=C1C1(C=2C=C(Br)C(O)=C(Br)C=2)C2=CC=CC=C2S(=O)(=O)O1 UDSAIICHUKSCKT-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012875 competitive assay Methods 0.000 description 1
- 230000009137 competitive binding Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000002795 fluorescence method Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000001641 gel filtration chromatography Methods 0.000 description 1
- 238000002523 gelfiltration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000000984 immunochemical effect Effects 0.000 description 1
- 238000012151 immunohistochemical method Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- SDEKDNPYZOERBP-UHFFFAOYSA-H iron(ii) phosphate Chemical compound [Fe+2].[Fe+2].[Fe+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O SDEKDNPYZOERBP-UHFFFAOYSA-H 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- HWYHZTIRURJOHG-UHFFFAOYSA-N luminol Chemical compound O=C1NNC(=O)C2=C1C(N)=CC=C2 HWYHZTIRURJOHG-UHFFFAOYSA-N 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 125000005439 maleimidyl group Chemical group C1(C=CC(N1*)=O)=O 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- HOVAGTYPODGVJG-UHFFFAOYSA-N methyl beta-galactoside Natural products COC1OC(CO)C(O)C(O)C1O HOVAGTYPODGVJG-UHFFFAOYSA-N 0.000 description 1
- NKLVQAPOOYZRPM-UHFFFAOYSA-N methyl thiohypofluorite Chemical compound CSF NKLVQAPOOYZRPM-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000007500 overflow downdraw method Methods 0.000 description 1
- 229940055729 papain Drugs 0.000 description 1
- 235000019834 papain Nutrition 0.000 description 1
- 229940111202 pepsin Drugs 0.000 description 1
- KHIWWQKSHDUIBK-UHFFFAOYSA-N periodic acid Chemical compound OI(=O)(=O)=O KHIWWQKSHDUIBK-UHFFFAOYSA-N 0.000 description 1
- 239000008055 phosphate buffer solution Substances 0.000 description 1
- 102000040430 polynucleotide Human genes 0.000 description 1
- 108091033319 polynucleotide Proteins 0.000 description 1
- 239000002157 polynucleotide Substances 0.000 description 1
- 238000011176 pooling Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000003127 radioimmunoassay Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 108091008146 restriction endonucleases Proteins 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 238000012764 semi-quantitative analysis Methods 0.000 description 1
- 208000026425 severe pneumonia Diseases 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- ILXAOQAXSHVHTM-UHFFFAOYSA-M sodium;2-amino-2-(hydroxymethyl)propane-1,3-diol;chloride Chemical compound [Na+].[Cl-].OCC(N)(CO)CO ILXAOQAXSHVHTM-UHFFFAOYSA-M 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- ATGUDZODTABURZ-UHFFFAOYSA-N thiolan-2-ylideneazanium;chloride Chemical compound Cl.N=C1CCCS1 ATGUDZODTABURZ-UHFFFAOYSA-N 0.000 description 1
- GPRLSGONYQIRFK-MNYXATJNSA-N triton Chemical compound [3H+] GPRLSGONYQIRFK-MNYXATJNSA-N 0.000 description 1
- 210000003501 vero cell Anatomy 0.000 description 1
- 108700026220 vif Genes Proteins 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/569—Immunoassay; Biospecific binding assay; Materials therefor for microorganisms, e.g. protozoa, bacteria, viruses
- G01N33/56983—Viruses
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/08—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from viruses
- C07K16/10—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from viruses from RNA viruses
- C07K16/1002—Coronaviridae
Definitions
- Anti-SARS virus antibody hybridoma producing the antibody, and immunoassay reagent using the antibody
- the present invention relates to a monoclonal antibody against a nuclear capsid protein (hereinafter, referred to as "nucleoprotein") of a coronavirus (hereinafter, referred to as SARS virus) causing severe acute respiratory syndrome (SARS),
- SARS virus coronavirus
- the present invention relates to a hybridoma producing a monoclonal antibody, an immunoassay reagent or an immunoassay instrument for a SARS virus using the monoclonal antibody as a solid phase antibody and Z or a labeled antibody.
- Non-Patent Document 1 The virus isolated from the patient was named SARS virus and was confirmed to be a new type of coronavirus. The entire gene sequence of this SARS virus has been decoded by the Michael Smith Genome Science Center in Pretty Columbia, Canada (Non-Patent Document 1).
- a person infected with SARS develops a fever of over 38 degrees, cough, headache, dyspnea, etc. after a 2 to 7 day incubation period after being infected with the virus.
- the symptoms of SARS-infected persons are similar to those of influenza, and it is necessary to determine early whether or not they are infected by the SARS virus in order to determine appropriate treatment.
- the following methods are currently reported as methods for diagnosing the presence or absence of SARS virus infection.
- Antibody measurement method by ELISA Antibody (IgMZlgA) in the serum of SARS patients can be detected from about 20 days after the appearance of clinical symptoms.
- Immunofluorescence antibody method Immunofluorescence antibody method (Ig M detection) using SARS virus-infected VERO cells. Approximately 10 days after onset, serum antibodies can be detected.
- PCR method Amplifies and detects SARS virus gene from various samples such as blood, feces, and respiratory secretions.
- Non-Patent Document 1 Science; 2003 May 30; 300 (5624): 1394-9.
- an object of the present invention is to provide a monoclonal antibody that specifically recognizes a SARS virus, and to provide an immunoassay method, an immunoassay reagent or an immunoassay using the monoclonal antibody that detects the SARS virus.
- a measuring instrument is provided.
- the inventors of the present application made an effort to obtain an anti-SARS virus monoclonal antibody having specificity and high affinity for SARS virus, and as a result, the SARS virus was synthesized by polynucleotide synthesis using PCR. Nucleoprotein gene, a transformant containing the gene is prepared by genetic recombination technology, and immunization of an animal using the SARS virus nucleoprotein obtained as an immunogen is carried out. Thus, the desired monoclonal antibody was obtained. Furthermore, the present inventors were able to develop an immunoassay reagent using this monoclonal antibody.
- the present invention provides an anti-SARS virus monoclonal antibody or an antigen-binding fragment thereof against a nucleoprotein of coronavirus causing severe acute respiratory syndrome (SARS).
- SARS severe acute respiratory syndrome
- the present invention also provides a hybridoma that produces the above-described monoclonal antibody of the present invention, wherein the hybridoma is obtained by cell fusion of an anti-SARS virus monoclonal antibody-producing cell and a tumor cell. Offer.
- the present invention provides an immunoassay reagent for SARS-causing coronavirus, wherein the monoclonal antibody of the present invention or an antigen-binding fragment thereof is used as at least one of a solid phase antibody and a labeled antibody.
- the present invention provides an immunoassay for SARS-causing coronavirus having a detection zone in which an anti-SARS antibody is immobilized on a transfusable matrix and a labeled reagent zone in which a labeled anti-SARS antibody is movably spotted on the matrix.
- an instrument wherein at least one of the antibody immobilized in the detection zone and the labeled anti-SARS antibody is the monoclonal antibody of the present invention or an antigen-binding fragment thereof.
- the present invention provides an immunoassay using an antigen-antibody reaction between the anti-SARS virus monoclonal antibody or the antigen-binding fragment thereof of the present invention and a SARS virus in a test sample, whereby SARS in the test sample is determined.
- a method for immunoassay of a SARS virus comprising measuring a virus.
- the monoclonal antibody of the present invention has high specificity and affinity for a nucleoprotein of a SARS virus, and thus can be used for a highly sensitive SARS virus immunoassay. Further, the hybridoma of the present invention can provide a monoclonal antibody that specifically recognizes the SARS virus. Furthermore, the immunoassay reagent using the monoclonal antibody of the present invention can detect only a sample containing a SARS virus or a sample derived from a SARS patient by simple operation without dropping.
- FIG. 1 is a diagram showing a restriction map of a nuclear protein expression plasmid pW6A used as an immunogen, which was used in Examples of the present invention.
- FIG. 2 is a diagram schematically showing the results of SDS-polyacrylamide gel electrophoresis of a recombinant protein (S-N) expressed in an example of the present invention.
- FIG. 3 is a graph showing the results of Western blotting showing the reactivity of monoclonal antibodies (rSN-18 antibody, rSN-122 antibody, rSN-150 antibody) performed in Examples of the present invention. .
- FIG. 4 is a diagram showing the results of Western blotting showing the reactivity of monoclonal antibodies (rSN-21-2 antibody, rSN-29 antibody, rSN-122 antibody) performed in Examples of the present invention. is there.
- FIG. 5 is a schematic cross-sectional view of one specific example of an immunoassay instrument using immunochromatography of the present invention.
- the monoclonal antibody of the present invention is a monoclonal antibody against a nucleoprotein (ie, capsid protein) of a coronavirus that causes SARS (hereinafter, simply referred to as "nucleoprotein").
- nucleoprotein ie, capsid protein
- the “monoclonal antibody against the nucleoprotein” means a monoclonal antibody that reacts with the nucleoprotein with an antigen antibody.
- an antibody fragment having a binding property to a corresponding antigen is obtained by decomposing the antibody with papain or pepsin (the present invention).
- an "antigen-binding fragment" can be obtained in the detailed description, but the antigen-binding fragment of the monoclonal antibody of the present invention can also be used in the same manner as the monoclonal antibody of the present invention. Yes, and fall within the scope of the present invention.
- the monoclonal antibody of the present invention can be obtained by using a nucleoprotein as an immunogen.
- the amino acid sequence of the nucleoprotein is known (Non-Patent Document 1), and the amino acid sequence is shown in SEQ ID NO: 2.
- SEQ ID NO: 1 shows the base sequence of the nucleic acid encoding the amino acid sequence shown in SEQ ID NO: 2. Therefore, the monoclonal antibody of the present invention can be obtained using a polypeptide having the amino acid sequence shown in SEQ ID NO: 2 as an immunogen. Also, it may be a natural variant of the amino acid sequence of SEQ ID NO: 2.
- the nucleoprotein may be used as an immunogen even if it is not necessarily purified to a high degree of purity but is a crude product.
- a protein in which other amino acid sequences are added to the N-terminus and Z- or C-terminus of the amino acid sequence shown in SEQ ID NO: 2 without affecting the immunogen may be used as the immunogen.
- it can be obtained by using a partial region in the amino acid sequence shown in SEQ ID NO: 2 as an immunogen. Some of these regions are 10 Preferably, it contains more than one amino acid.
- the upper limit of the size of the partial region is that the monoclonal antibody of the present invention can be induced even with a peptide having 10 to 50 amino acids, preferably 15 to 30 amino acids, which is less than the full length.
- a peptide having 10 to 50 amino acids preferably 15 to 30 amino acids, which is less than the full length.
- the monoclonal antibody of the present invention can be obtained by using the peptide shown in SEQ ID NO: 3 (sequence comprising amino acids 244 to 260 and cysteine power) as an immunogen. You.
- Such a relatively small peptide is convenient because it can be easily chemically synthesized using a commercially available peptide synthesizer.
- such a relatively small peptide binds to a carrier protein such as, for example, keyhole limpet hemocyanin (KLH) serum serum albumin (BSA), and is used as an immunogen.
- KLH keyhole limpet hemocyanin
- BSA serum serum albumin
- the immunogen it is preferable to use a nucleoprotein having the amino acid sequence shown in SEQ ID NO: 2 or a partial region thereof, particularly the full length of the nucleoprotein, but the amino acid sequence shown in SEQ ID NO: 2 or a partial region thereof is preferred.
- the monoclonal antibody of the present invention may be induced even when a polypeptide in which a small number of amino acids are substituted and Z or deleted and Z or a small number of amino acids are inserted is used as an immunogen.
- the amino acid sequence of such an immunogen preferably has the highest possible identity to the amino acid sequence shown in SEQ ID NO: 2 or a partial region thereof. The identity is preferably 90% or more, more preferably 95% or more.
- Amino acid sequence identity can be easily calculated using well-known computer software such as BLAST, and such software is also available on the Internet. Further, when a small number of amino acids are substituted, deleted and Z or inserted, the total number of substituted, deleted and Z or inserted amino acids is preferably one or several.
- the 20 amino acids that make up the natural protein are neutral amino acids with low polar side chains (Gly, lie, Val, Leu, ala, Met, Pro) and neutral amino acids with hydrophilic side chains (Asn , Gin, Thr, Ser, Tyr Cys), acidic amino acids (Asp, Glu), basic amino acids (Arg, Lys, His), aromatic amino acids (Phe, Tyr, Trp) Grouping can be performed, and substitution within each of these groups often does not substantially change the immunogenic properties.
- the nucleoprotein of the SARS virus used as the immunogen is, for example, a gene recombination technique. It can be obtained by the following method using surgery.
- a DNA fragment encoding a polypeptide substantially comprising the amino acid sequence of SEQ ID NO: 2 is obtained. That is, for example, the virus is extracted from the SARS virus, and RT-PCR is performed. That is, the terminal force of the N protein gene is also restricted to the region up to the restriction site Nhel (a restriction site, for example, an EcoRI recognition sequence is added to the 5 'end), and the region from the restriction site Nhel to the end of the N protein gene (3' Restriction sites, such as adding a BamHI recognition sequence), are each amplified by RT-PCR.
- Nhel a restriction site, for example, an EcoRI recognition sequence is added to the 5 'end
- each fragment is treated with a restriction enzyme and ligated, whereby a DNA fragment encoding a polypeptide substantially comprising the amino acid sequence of SEQ ID NO: 2 can be obtained.
- an expression vector can be prepared by inserting the DNA fragment into an appropriate expression vector.
- a DNA fragment encoding a polypeptide substantially comprising the amino acid sequence of SEQ ID NO: 2 or 3 in the sequence listing can be obtained by chemical synthesis based on the above base sequence.
- the DNA fragment thus obtained is introduced into an expression vector having an appropriate marker gene such as an ampicillin resistance gene, and a host such as Escherichia coli is transformed with the vector to obtain a transformant.
- the SARS virus nucleoprotein can be obtained by culturing the transformant and purifying the culture.
- a polypeptide containing the sequence represented by SEQ ID NO: 3 can be obtained according to a known synthesis method using a danigami synthesizer.
- the anti-SARS virus monoclonal antibody is obtained by immunizing an animal with the above-mentioned immunogen, and hybridizing the antinuclear protein antibody-producing cells obtained from the animal with tumor cells by a conventional method using a hybridoma. Can be produced.
- hybridomas can be obtained, for example, by the following method. That is, the nucleoprotein obtained as described above, together with Freund's complete adjuvant, is administered intraperitoneally or intravenously to an animal such as a mouse every two to three weeks in several divided doses. Immunize
- antibody-producing cells derived from the spleen and the like obtained from the immunized animal are fused with immortalized cell types, such as myeloma cell lines, and tumor cells capable of growing in vitro such as selected myeloma cells.
- immortalized cell types such as myeloma cell lines
- tumor cells capable of growing in vitro such as selected myeloma cells.
- the polyethylene glycol method can be applied according to Koehler-Milstein's ordinary method (Nature, 256, 495, 1975), or the Sendai virus method, etc. May also be employed.
- a method for selecting a hybridoma that produces an antibody that recognizes the fused cell force SARS virus nucleoprotein can be performed, for example, as follows. That is, cells that survive in the HAT medium are selected as hybridomas from the fused cells. Next, the culture medium of the above-mentioned hybridoma is reacted on an Atsie plate on which a highly purified SARS virus nucleoprotein is immobilized. Further, the aseptate is reacted with anti-mouse immunoglobulin (Ig) or the like.
- Ig anti-mouse immunoglobulin
- the hybridoma of the present invention is not particularly limited as long as it is a hybridoma that produces a monoclonal antibody that specifically recognizes a nucleoprotein.
- a hybridoma that produces a monoclonal antibody that specifically recognizes a nucleoprotein.
- six types of hybridomas established by the present inventors by the above-described method are available. Hypridoma.
- hybridomas are respectively hybridoma rSN-18, hybridoma rSN-122, hybridoma rSN-150, hybridoma rSN-21-2, hybridoma rSN-29, and hybridoma SN5— Named 25.
- Each of the above hybridomas has been registered with the National Institute of Advanced Industrial Science and Technology (AIST) at the Patent Organism Depositary [Address: Tsukuba, Ibaraki, Japan 1-1-1, Higashi No. 6], and the hybridoma rSN-18 has the accession number FERM P — 19 572 (Acceptance date; October 24, 2003), Neubridoma rSN—122, accession number FERM
- accession number FERM BP-10143 is accession number FERM BP-10144
- Each of the above hybridomas can be cultured in a medium usually used for cell culture.
- a monoclonal antibody can be recovered from the culture supernatant.
- Monoclonal antibodies can also be obtained by transplanting the hybridomas into the abdominal cavity of the animal species from which the hybridomas are derived, collecting the ascites fluid after waiting for growth, and then purifying the ascites fluid.
- a conventional purification method can be used, and examples thereof include gel filtration chromatography, ion exchange chromatography, and affinity chromatography using protein A. .
- the reactivity of the above monoclonal antibody can be confirmed by an ordinary confirmation method.
- the specificity of reactivity with the nucleoprotein of the SARS virus is confirmed as an index.
- the monoclonal antibody or antigen-binding fragment thereof of the present invention can be used for immunoassay for detection or quantification of SARS virus.
- the immunoassay method itself is well known, and any known immunoassay method can be adopted. That is, if classified according to the measurement format, there are sandwich method, competition method, agglutination method, Western plot method, etc.If classified according to the label used, there are fluorescence method, enzyme method, radiation method, biotin method, etc. Either can be used. Furthermore, the diagnosis can be made by immunohistological staining. When a labeled antibody is used for the immunoassay, the method of labeling the antibody itself is well known, and the well-known V and deviation methods can also be used.
- the antibody of the present invention or an antigen-binding fragment thereof is used.
- the first antibody is immobilized on a solid phase, reacted with a sample, washed, and then reacted with a second antibody that reacts with the enzyme of the present invention as an antigen-antibody. After washing, the second antibody bound to the solid phase is measured.
- the second antibody bound to the solid phase can be measured.
- the above method was used to measure a plurality of standard samples with known concentrations, and the relationship between the measured amount of label and the enzyme of the present invention in the standard sample was measured.
- the enzyme of the present invention in the test sample can be quantified.
- the first antibody and the second antibody may be interchanged with the above description.
- the antibody of the present invention or an antigen-binding fragment thereof is immobilized on particles such as latex, and reacted with a sample to measure the absorbance.
- a plurality of standard samples with known concentrations were measured by the above method, and a calibration curve was created based on the relationship between the measured label amount and the enzyme of the present invention in the standard sample. By applying the calibration curve, the enzyme of the present invention in the test sample can be quantified.
- the sample to be subjected to the above immunoassay is not particularly limited as long as it contains a nucleoprotein of the SARS virus.
- a nucleoprotein of the SARS virus for example, human or animal-derived serum, plasma, whole blood, and nasal swabs Fluids (nasal swabs), nasal aspirates, pharyngeal swabs (pharyngeal swabs) and other body fluid extracts, respiratory tract secretions, cell or tissue homogenates, and the like.
- a SARS virus measurement reagent can be produced using the antibody as at least one of a solid phase antibody and a labeled antibody.
- solid phases conventionally used in immunoassays can be used as the solid phase to which the monoclonal antibody is bound, such as various types of solid phases such as ELISA plates, latex, gelatin particles, magnetic particles, polystyrene, and glass, beads, and the like.
- An insoluble carrier such as an infusible matrix is exemplified.
- the labeled antibody can be produced by labeling the antibody with an enzyme, metal colloid particles, colored latex particles, a luminescent substance, a fluorescent substance, a radioactive substance, or the like.
- Reagents used in enzyme immunoassays, radioimmunoassays, fluorescent immunoassays, and the like can be produced by combining these solid phase antibodies and reagents such as Z or labeled antibodies.
- These measurement reagents are reagents for measuring a target antigen in a sample by a sandwich method or a competitive binding measurement method.
- the SARS virus immunoassay device of the present invention is based on the principle of immunochromatography, and comprises a detection zone in which the monoclonal antibody of the present invention is immobilized on a transfusable matrix, and a labeled antibody of the present invention. It has a labeling reagent zone in which a SARS virus monoclonal antibody is movably spotted on the matrix.
- the reagent for the immunoassay by the sandwich method includes, for example, the monochromator of the present invention. Two kinds of antibodies are prepared, and one of them is used as the labeled antibody, and the other is used as a solid phase antibody bound to the solid phase. First, the solid-phase antibody is reacted with a sample containing the antigen to be measured, and then the antigen captured by the solid-phase antibody is reacted with a labeled antibody (second antibody) to detect the presence of the labeled substance bound to the insoluble carrier. By detecting, an immunoassay can be performed.
- the solid-phase antibody was reacted with a sample containing the antigen to be measured, and in the next step, the antigen captured by the solid-phase antibody was reacted with the labeled antibody (second antibody) to bind to the insoluble carrier.
- An immunoassay can be performed by quantifying the amount of the antigen to be measured from the amount of the labeled substance, that is, the amount of the labeled antibody.
- one monoclonal antibody can be used as a solid phase antibody and a labeled antibody (for example, when the antigen is a multimer), but two different epitopes of the antigen to be measured are usually used. It is preferred to use two or more antibodies that recognize.
- a solid-phase antibody and a labeled antibody by selecting a monoclonal antibody that recognizes different epitopes. Further, for both the solid phase antibody and the labeled antibody, two or more types of monoclonal antibodies can be selected and used in combination.
- an immunoassay reagent by a competitive binding assay for example, a fixed amount of a labeled virus antigen labeled with an enzyme, metal colloid particles, colored latex particles, a luminescent substance, a fluorescent substance, a radioactive substance or the like is prepared.
- a fixed amount of the monoclonal antibody of the present invention the labeled virus antigen, and a sample containing the antigen to be measured are allowed to react competitively to bind to the antibody or to bind to the antibody.
- the immunoassay can also be performed by quantifying the amount of antigen to be measured for the amount of labeled virus antigen.
- a method such as a physical adsorption method or a chemical bonding method can be used to bind the antibody or antigen to a solid phase or a labeled substance (Protein, Nucleic Acid, Enzyme, Supplement No. 31, 37-). 45 (1987)).
- the anti-SARS virus monoclonal antibody of the present invention When the anti-SARS virus monoclonal antibody of the present invention is used in an immunoassay to which immunochromatography is applied, it is possible to detect SARS virus in a sample simply and without using a special measuring device. it can.
- This measuring instrument is provided with a band-like matrix capable of infusion (development) by capillary action as an insoluble carrier, and the matrix is immobilized with at least one kind of anti-SARS virus monoclonal antibody. Inspection Exit zone, a labeled reagent zone in which a labeled anti-SARS virus monoclonal antibody is movably spotted, a sample spotting zone, and a developing solution supply zone in which a developing solution pad is attached to one end of the matrix in the longitudinal direction. And a developing liquid absorption zone provided at another end of the matrix in the longitudinal direction.
- FIG. 5 shows a schematic cross-sectional view of a preferable example of such an immunoassay immunoassay instrument.
- reference numeral 1 is an immunoassay device for immunochromatography
- 2 is an infusible matrix
- 3 is a developing solution supply zone having a dried substrate zone
- 4 is a labeling reagent zone
- 5 is a labeling reagent zone.
- the developing solution absorption zone, 6 is the detection zone
- 8 is the sample spotting zone
- 9 is the sample
- 10 is the developing solution.
- each component of the immunoassay device will be described.
- the matrix in this immunoassay device is composed of a strip of absorbent material capable of transporting liquids by capillary action.
- the absorbent material include a filter paper, a membrane, and a porous material produced by using cellulose or a derivative thereof such as cellulose or nitrocellulose, glass fiber, or the like, alone or in combination.
- the thickness of the matrix can be, for example, 100 m-1 mm.
- the matrix may be partially or wholly used to prevent adsorption of a protein derived from a sample to the matrix due to a non-specific reaction during measurement, for example, animal serum such as bovine serum albumin (BSA), casein, sucrose, etc. Can be used after blocking.
- animal serum such as bovine serum albumin (BSA), casein, sucrose, etc.
- BSA bovine serum albumin
- sucrose sucrose
- the detection zone can be provided with a SARS virus detection section in which an anti-SARS virus monoclonal antibody is immobilized on the matrix.
- the anti-SARS virus monoclonal antibody in the detection section is provided on a matrix, and is preferably provided in a line in a direction perpendicular to the direction of movement of the liquid developed on the matrix (the longitudinal direction of the matrix) in order to measure with high sensitivity. Is preferred.
- the anti-SARS virus monoclonal antibody in this detection zone is the aforementioned antibody, Noclonal antibodies can be used alone or in combination.
- the anti-SARS virus monoclonal antibody may be an IgG antibody, an IgM antibody, or a fragment of these antibodies, such as Fab, FaW, F (ab ').
- the anti-SARS virus monoclonal antibody immobilized in the detection unit may be physically adsorbed directly to the detection zone of the matrix, or may be provided in the detection unit by immobilization by a chemical bond such as a covalent bond.
- an anti-SARS virus monoclonal antibody may be bound to a water-insoluble carrier, and the carrier may be contained in a matrix.
- the insoluble carrier include particles obtained by insoluble a mixture of gelatin, gum arabic and sodium hexametaphosphate (JP-B-63-22323), polystyrene latex particles, glass fibers and the like.
- the insoluble carrier and the anti-SARS virus monoclonal antibody can be bound by the chemical bond or physical adsorption.
- the detection unit is provided on the matrix, and is provided on the downstream side in the moving direction of the developing solution with respect to the labeling reagent zone, the sample spotting zone, and the developing solution supply zone, and the developing solution absorbing zone. Located upstream of.
- the detection unit can be provided on the matrix as a line having a width of about 0.5 mm to 5 mm, or can be provided as a plurality of lines. If Ma Toritasu about width 5 mm, the antibodies and Z or antigen normally deposited respectively 0.1 8 shell 10 8 extent point, it is possible to produce a detection unit by drying.
- the labeling reagent zone can be provided by movably spotting a labeled anti-SARS virus monoclonal antibody.
- the labeling reagent zone can be provided on the upstream side of the detection zone in the moving direction of the developing solution from the developing solution supply zone.
- This labeling reagent zone can be prepared by spotting the labeling reagent on the matrix, by laminating a water-absorbent pad containing the labeling reagent on the matrix, or by labeling a part or all of the matrix part that adheres to the pad together with the pad. It can be provided by a method of containing a reagent. As a water-absorbing node, a pad similar to a pad used in a sample spotting zone described later can be used.
- At least one of the labeled antibodies is the anti-SARS virus monoclonal antibody of the present invention together with the antibody provided in the detection zone, and both antibodies are the anti-SARS virus monoclonal antibodies of the present invention. ! / ,.
- Labeled anti-SARS virus monochrome As the null antibody, a fragment thereof can be used in the same manner as the antibody in the detection zone.
- the labeled anti-SARS virus monoclonal antibody can be produced by binding the anti-SARS virus monoclonal antibody and a label.
- Labels include enzymes, metal colloid particles, colored latex particles, fluorescent latex particles, luminescent substances, fluorescent substances, and the like.
- the enzyme various enzymes used for enzyme immunoassay (EIA) can be used, and examples thereof include alkaline phosphatase, peroxidase, and
- the metal colloid particles for example, gold colloid particles, selenium colloid particles and the like can be used.
- a known method for forming a covalent bond or a non-covalent bond can be used as a method for binding the labeled substance to the anti-SARS virus monoclonal antibody.
- the binding method include the dartalaldehyde method, the periodic acid method, the maleimide method, the pyridyl disulfide method, and the method using various crosslinking agents (for example, “Protein Nucleic Acid Enzyme”, Supplement No. 31, 37). See page 45 (1985)).
- examples of the cross-linking agent include N-succinimidyl 4-maleimidobutyric acid (GMBS), N-succinimidyl 6-maleimidohexanoic acid, N-succinimidyl 4- (N-maleimidomethyl) cyclohexane 1 carbon An acid or the like can be used.
- GMBS N-succinimidyl 4-maleimidobutyric acid
- N-succinimidyl 6-maleimidohexanoic acid N-succinimidyl 4- (N-maleimidomethyl) cyclohexane 1 carbon
- An acid or the like can be used.
- functional groups existing in the antibody can be used, and a functional group such as, for example, a thiol group, an amino group, a carboxyl group, or a hydroxyl group can be introduced into the antibody by a conventional method.
- a labeled anti-SARS virus monoclonal antibody can be produced by
- the amount of the labeled anti-SARS virus monoclonal antibody is usually about 0.01 ⁇ g to about 5 ⁇ g in terms of dry weight, which can be appropriately changed depending on the expected amount of the test object.
- the labeled anti-SARS virus monoclonal antibody can be applied together with a reagent stabilizing agent, a dissolution regulator and the like.
- the sample spotting zone is on the downstream side in the moving direction of the developing solution in the developing solution supply zone, and
- the matrix on the upstream side of the detection zone can be provided without particularly including a reagent or the like.
- the sample spotting zone is 1) downstream of the developing solution supply zone in the developing solution moving direction and at a predetermined position on the upstream side of the labeling reagent zone, 2) downstream of the labeling reagent zone and the detection zone At a predetermined location on the upstream side of the labeling reagent, or 3) at a predetermined location on the labeling reagent zone.
- a water-absorbing pad containing a labeling reagent as described above from the viewpoint of efficient analysis.
- a large amount of the sample liquid can be spotted, so that a trace component in the sample can be measured with high detection sensitivity.
- This water-absorbing pad is selected from materials that do not adsorb the labeling reagent or the SARS virus in the specimen, and is, for example, a porous synthetic or natural polymer such as polyvinyl alcohol (PVA), nonwoven fabric, or cellulose. Materials which also have a compound power can be constituted singly or in combination.
- PVA polyvinyl alcohol
- Materials which also have a compound power can be constituted singly or in combination.
- the size, thickness, density, etc. of the pad are not limited, it is usually necessary to use a pad having a length and width of about 3 mm to 10 mm and a thickness of about 0.5 mm to 4 mm for efficient measurement. preferable.
- the developing liquid supply zone is a zone provided at one end in the longitudinal direction of the matrix and supplied with the developing liquid.
- the measurement can be started by immersing this zone in a container containing the developing solution in an amount at least reaching the developing solution absorption zone.
- a liquid tank containing the developing liquid may be added to the developing liquid supply zone, and the measurement may be started by breaking the cover of the liquid tank and bringing the developing liquid into contact with the matrix.
- the developing solution can appropriately contain a surfactant, a buffer, a stabilizer, an antibacterial agent and the like.
- a substrate can be added to the developing solution together with the substrate zone described later.
- the buffer containing a buffer examples include an acetate buffer, a borate buffer, a tris-monohydrochloride buffer, a diethanolamine buffer and the like.
- the developing liquid supply zone may be provided with a developing liquid pad for stably and continuously supplying the developing liquid to the matrix.
- a developing liquid pad for example, filter paper such as cellulose or a cellulose derivative can be used.
- the developing liquid absorption zone is provided at the other end with respect to the developing liquid supply zone provided at one end of the matrix. This zone is provided to absorb the developing solution supplied to the matrix and to smoothly perform the analysis.
- the developing liquid absorption zone can be secured by forming the matrix to be long. In addition, by attaching a water-absorbing material to the matrix, an absorption zone can be formed. In this case, the spreading of the developing solution can be promoted.
- a water-absorbing material a high-water-retentivity filter paper, sponge, or the like, which can be used as a natural polymer compound or a synthetic polymer compound, can be used.
- the developing liquid absorption zone is provided with a pad-shaped absorbent material having a capacity to absorb all the developing liquid.
- the developing solution absorption zone is provided by laminating the absorbent material on or under the matrix, a miniaturized immunoassay instrument can be manufactured.
- the developing solution may contain a substrate as described above, or a substrate reagent zone may be provided in the matrix near the developing solution supply zone.
- the substrate reagent zone is preferably provided so as to be impregnated with the developing solution node provided in the developing solution supply zone in order to increase the base mass and perform high-sensitivity measurement.
- the substrate various chromogenic substrates, fluorescent substrates, luminescent substrates and the like shown below corresponding to the enzyme of the labeling reagent can be used.
- Luminescent substrate For alkaline phosphatase: 3- (2'-spiroadamantane) 4-methoxy-4-(3 "-phosphoryloxy) phenyl- 1,2-dioxetane disodium salt (AMPPD) ⁇ -D
- AMPPD phenyl- 1,2-dioxetane disodium salt
- galactosidase 3- (2'-spiroadamantane) 4-methoxy-4- (3 "-j8-D -Galactopyranosinole) Feru 1,2-dioxetane (AMGPD)
- the substrate zone can usually be formed by dissolving the substrate in an aqueous solution, applying the solution in a line to a developing solution pad, and then drying the solution. If desired, a signal enhancer, a stabilizer, and a solution A regulator and the like can also be added.
- the substrate zone is not particularly limited as long as it is within the developing solution pad attached to the end of the matrix.
- the base weight to be added to the developing solution and the developing solution pad can be determined according to the measurement conditions, but usually about 5 to 500 ⁇ g per instrument can be used.
- the measurement reagent of the present invention can measure SARS virus in various sample samples.
- the measurement is performed by first supplying the sample to the sample spotting zone of the measuring instrument of the present invention, then supplying the developing solution to the developing solution pad, and developing the matrix on the matrix.
- the developing solution moves through the matrix by capillary action, reaches the developing solution absorption zone, and the components in the specimen that are not bound to the detection zone, the enzyme-labeled reagent, and the like are absorbed by the developing solution absorption zone, and the development is completed.
- the detection zone After a lapse of a predetermined time (usually 10 to 20 minutes), the detection zone is observed, and the labeled substance immobilized on the detection section by the SARS virus antigen in the sample solution is detected and Z- or measured to detect the SARS virus. Can be measured.
- This detection can be carried out visually, depending on the label, or using a measuring device such as a colorimeter, a fluorometer, a photon counter, a photosensitive film, or the like.
- a method of visually measuring the color development of the detection zone is simple. This method also enables semi-quantitative analysis by using a color chart (color chart) corresponding to the concentration of SARS virus. Further, the color development of the detection zone can be quantified by a colorimeter or the like to perform quantitative determination.
- the matrix can be laminated and fixed on a support member such as plastic, metal, paper or the like. Further, the matrix is fixed to a case made of plastic or the like, a liquid tank containing a developing solution is provided in a developing solution supply zone, and a cover having a hole in at least a sample spotting zone and a detection zone is provided. This makes it possible to construct an instrument that is easy to handle.
- Samples that can be measured by the above reagents include those containing a nucleoprotein of the SARS virus. It is not particularly limited as long as it is, for example, human or animal-derived serum, plasma, whole blood, body fluid extracts such as nasal swabs (nasal swabs), nasal aspirates, pharyngeal swabs (pharyngeal swabs), Examples include airway secretions, cell or tissue homogenate solutions, and the like.
- a solution obtained by treating the virus with a surfactant containing a SARS virus which can be used as it is, such as a nonionic surfactant or an anionic surfactant, can also be used.
- a nonionic surfactant for example, Nordet (Nodet T-40), Triton, Brij and the like are used, and as the anionic surfactant, for example, SDS and the like are used.
- the nuclear proteins of the SARS virus distributed in the cells, tissues and the like are obtained. Can also be measured directly. Further, using the monoclonal antibody of the present invention, so-called western blotting, affinity chromatography and the like can also be performed.
- an antigen-binding fragment of the monoclonal antibody of the present invention can be used instead of the monoclonal antibody of the present invention.
- N protein The nuclear protein (referred to as "N protein") gene is composed of 1270 base pairs in total length. Based on the previously reported gene sequence, the fragment is divided into two fragments before and after the restriction site Nhel, which hydrolyzes almost the middle of the N protein gene, and each has a 15-base overlap synthesized based on known sequence information
- the 50-55 base oligomer was annealed, subjected to an extension reaction under the conditions of DNA synthesis, and then amplified sequentially by PCR. This operation was repeated to provide an EcoRI site on the 5 ′ side of the first half of the forward primer, a Nhel site on the third side of the reverse primer, and a BamHI site on the third side of the second half of the reverse primer.
- the Nhel site was added to the 5th side of the forward primer, and PCR was performed.
- BL21 (DE3) (obtained from Brookhaven National Laboratory) was transformed to obtain an ampicillin-resistant transformant Escherichia coli BL21 (DE3) / pWS-N.
- the nucleotide sequence and amino acid sequence of the nucleoprotein are shown in SEQ ID NOs: 1 and 2, respectively.
- the transformant prepared in Reference Example 1 was cultured at 37 ° C. in 2 ml of LB medium containing 50 g / ml of ampicillin. In the preliminary culture, the cells were grown until the OD at 600 nm became 0.6-0.8, and then the culture was supplemented with 0.4 mM IPTG to induce expression, and the cells were further cultured for 3 hours. The cells were collected by centrifuging 1.5 ml of the bacterial culture at 5000 rpm for 2 minutes, and suspended in 100 / z 1 buffer (10 mM Tris-HCl, pH 8.0, 0.1 M sodium chloride, ImMEDTA). The cells were completely disrupted by sonication for 15 minutes. This was used as a cell sample.
- SDS polyacrylamide buffer 0.15 M Tris-HCl, ⁇ 6.8, 6% SDS, 24% glycerol, 6 mM EDTA, 2% 2-mercaptoethanol, 0.03% After bromophenol blue 41 was thoroughly stirred, SDS-polyacrylamide gel electrophoresis was performed. After electrophores
- the anti-N5 peptide serum was used to immunize mice using the N5 peptide KLH conjugate prepared as described in Reference Example 4, and the blood power collected from the mice was also separated.
- Escherichia coli BL21 (DE3) / pWS-N prepared in Reference Example 1 was cultured under LB medium containing ampicillin at 37 ° C. The transformant was propagated in a preliminary culture, and after adjusting the OD at 600 nm to a density of about 0.7, 0.4 mM IPTG was added to induce expression. After culturing for 18 hours, centrifugation was performed to collect Escherichia coli. The recovered Escherichia coli was treated with 20 mM Tris-HCl pH 8.0, ImM PMSF (fermented methylsulfur fluoride), and subjected to sonication under ice cooling.
- Tris-HCl pH 8.0 ImM PMSF (fermented methylsulfur fluoride)
- ammonium sulfate was added to the soluble fraction S-N, and a 20-40% fraction was recovered.
- This ammonium sulfate fraction was applied to SP Sepharose Fast Flow (manufactured by Amersham) equilibrated with 0.1 M sodium chloride, 8 M urea, and 20 mM phosphate buffer pH 6.9, and 0.2 M sodium chloride was added. Eluted with 8M urea, 20mM phosphate buffer pH 6.9 and purified. The eluted fraction was permeated with 0.2 M sodium chloride, 20 mM Tris-HCl buffer, pH 8.0. The purity of this preparation was confirmed by SDS-polyacrylamide gel electrophoresis and Western plot as in Reference Example 2. The results showed a single band.
- An anti-N protein monoclonal antibody was prepared by immunizing a mouse with the recombinant N protein prepared in Reference Example 3 and fusing spleen lymphocytes of the mouse with myeloma cells.
- BALB / C mice were initially immunized with 50-100 g / mouse of recombinant N protein emulsified with Freund's complete adjuvant, and 2-3 weeks later, the same antigen 50-100 was emulsified with incomplete Freund's adjuvant.
- Booster immunizations were performed with g / mouse.
- the antibody titer was checked by solid-phase ELISA using a 96-well ELISA plate coated with recombinant N protein.
- mice 25-100 g of free recombinant N protein was intravenously administered to the mouse in which the antibody titer was increased, and 3-4 days later, the mouse spleen was also removed and spleen cells were prepared.
- Mouse myeloma cells (P3U1) and spleen cells were mixed at a ratio of 1: 2-1: 5, and cell fusion was performed using PEG (manufactured by Boehringer). The fused cells were suspended in a HAT medium, dispensed into a 96-well culture plate, and cultured in a 37 ° C CO incubator.
- Screening was performed by the solid-phase ELISA described above. That is, the recombinant N protein is dispensed into 96-well ELISA plates (Pharmacia) at a concentration of 1 ⁇ g / ml at 50 ⁇ l / well, and left at 4 ° C for adsorption. I let it. Block the wells with 1% skim milk, wash three times with washing buffer (PBS containing 0.05% Tween 20), add the culture supernatant 501 of the cell-fused plate, and react at 37 ° C for 1 hour I let it.
- washing buffer PBS containing 0.05% Tween 20
- a POD-labeled anti-mouse immunoglobulin antibody manufactured by DACO
- DACO a POD-labeled anti-mouse immunoglobulin antibody
- the substrate ABTS was added, and a well showing color development was selected.
- the cells in the selected wells are transferred to a 24-well culture plate and cultured in a CO incubator at 37 ° C.
- hybridomas rSN-18, rSN-122, rSN-150, rSN-21-2 and rSN-29 producing the following anti-N protein monoclonal antibodies were established.
- These hybridomas are deposited at the Patent Organism Depositary, and their deposit numbers are FERM P-19572, FERM P-19573, FERM P-19574, and accession numbers F ERMP-19619 and FERM P-, respectively. 19620.
- These hybridomas were registered on October 18, 2004 at the National Institute of Advanced Industrial Science and Technology (AIST) at the Patent Organism Depositary Center [address: 1-1-1, Tsukuba, Higashi, Ibaraki, Japan, No. 6, Chuo No. 6].
- rSN-18 has accession number FERM BP-10143
- hybridoma rSN-122 has accession number FERM BP-10101
- hybridoma rSN-150 has accession number FERM BP-10145
- hybridoma rSN-21-2 has accession number FERM BP — 10146 and hybridoma rSN-29 have been transferred to the International Depository under accession number F ERM BP-10147.
- each of the established monoclonal antibodies to the natural antigen was confirmed by WB using a concentrated virus suspension as a sample. Vero E6 cells were infected with the SARS virus Hanoi strain and cultured for 48 hours in a CO incubator.
- TCID 7.95 ⁇ 10 6 / ml
- E2CT-38 is an irrelevant monoclonal antibody that uses rSN-18, rSN-122, rSN-150, rSN-29, rSN-21-2, and rSN-122 antibodies as anti-N protein monoclonal antibodies.
- WB was performed using the antibody as a negative control.
- the reaction with the antibody is as follows. Each monoclonal antibody was shaken for 1 hour at room temperature with the antigen-transferred WB membrane, subjected to a reaction, and then washed three times with a washing buffer (PBS containing 0.05% Tween 20) (washing with shaking for 5 minutes). Next, a POD-labeled anti-mouse immunoglobulin antibody (manufactured by DACO) was added, and the mixture was further reacted at room temperature for 1 hour. After washing with a washing buffer four times (washing with shaking for 5 minutes), a four-cloth naphthol solution of the substrate was added, and the band was confirmed. As shown in FIGS. 3 and 4, when each monoclonal antibody was used, a band was confirmed at a position corresponding to the N protein having a molecular weight of less than 50 Kd.
- Example 3 Detection of N Protein in Virus Culture Supernatant by Sandwich ELISA Method
- Sandwich ELISA was performed using recombinant N protein and virus culture supernatant as samples to confirm whether an N protein measurement system was established.
- ELISA was performed as follows. That is, each monoclonal antibody is diluted with PBS (pH 7.4) to a concentration of 5 g / ml in a Falcon ELISA plate, and 50 1 is added to each well and allowed to stand at 4 ° C- ⁇ . Coated. Next, 150% / ⁇ of 1% BSA-PBS (pH 7.4) was added and left at 37 ° C. for 1 hour to perform masking.
- the labeled antibody labeled with alkaline phosphatase was added to the well in a volume of 50 / well. And reacted at 37 ° C for 1 hour. After washing 3 times with the washing buffer, add 50 ⁇ l / ⁇ of the substrate p-trophyl phosphate (p-NPP), leave it at room temperature for 15 minutes, observe it visually, and measure the wavelength at 405 nm. did. As shown in Table 1, it was confirmed that ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ protein could be detected in all the monoclonal antibodies used in this example.
- Example 4 Production of Alkaline Phosphatase-Labeled Anti-SARS Virus Monoclonal Antibody 2-iminothiolane hydrochloride (manufactured by Aldrich) was reacted with the anti-SARS virus monoclonal antibody produced in Example 1 to introduce a thiol group.
- alkaline phosphatase having a maleimide group introduced therein was reacted with the antibody having a thiol group introduced thereinto, and subjected to gel filtration treatment to obtain a purified alkaline phosphatase-labeled anti-SARS virus monoclonal antibody.
- the following sandwich ELISA was performed using the recombinant N protein and the culture supernatant of the inactivated Dani virus obtained by heat treatment at 56 ° C for 90 minutes.
- Nunc IMMUNOMODULE MAXISORP plate was diluted with a phosphate buffer solution (pH 7.5) to a concentration of 10 to 15 ⁇ g / ml of each monoclonal antibody alone or a mixture thereof. 100 1 was added to each well and left at 4 ° C for immobilization. Then wash After washing each well three times with buffer [TBS containing 0.02% Triton X-100 (Tris buffered saline) pH 7.2], add 250 1 / well of 1% BSA-phosphate buffer (pH 7.4), The plate was allowed to stand at 37 ° C for blocking to prepare an antibody-immobilized plate.
- a phosphate buffer solution pH 7.5
- the recombinant N protein (1.0 ng / ml) diluted with the reaction solution (1% BSA, containing PBS, pH 7.5) and the virus culture supernatant (100 ⁇ l) were used. 1 / well) and reacted at room temperature (25 ° C) for 1 hour. At this time, the culture supernatant of cells not infected with the virus was used as a negative control.
- the plate four times with washing buffer add 100 1 / ⁇ of the labeled antibody prepared in Example 4 alone or in a mixture of 1.0-5.0 g / ml, and react at room temperature (25 ° C) for 1 hour. I let it.
- Table 2a and Table 2b show the results of the absorbance measurements measured for the recombinant ⁇ protein and the virus culture supernatant, respectively. As shown in Table 2a, in all the monoclonal antibodies, it was confirmed that the reactivity due to the combination was different, and it was possible to detect the recombinant N protein. In addition, as shown in Table 2b, almost the same reactivity as the recombinant N protein was observed with the virus culture supernatant.
- Example 6 Measurement by Immunochromatography Rapid detection of N protein by immunochromatography was confirmed using the recombinant N protein and the inactivated virus culture supernatant obtained by heat treatment at 56 ° C for 90 minutes as a sample.
- the immunoassay instrument 1 for immunochromatography shown in Fig. 5 was prepared as follows.
- a nitrocellulose membrane 2 5 mm x 50 mm
- 20 mg / ml of 5-bromo-4-cloth-3- indolyl-sodium phosphate (BCIP'Na) was used as a substrate and spotted onto a water-absorbent nonwoven fabric.
- a developing solution supply zone 3 having a dried substrate zone 7 and a water-absorbing absorption pad (developing solution absorption zone 5) were provided at the other end.
- a detection zone 6 was provided downstream of the labeling reagent zone 4 (sample spotting zone 8) in the membrane direction in the infusion direction.
- Detection zone 6 was prepared by spotting monoclonal antibodies (lmg / ml) listed in Table 3a or b on a line and drying.
- Labeling reagent zone 4 was produced by spotting single or two kinds of alkaline phosphatase-labeled monoclonal antibodies (35 ng / pad) shown in Table 3a or b on a water-absorbent nonwoven fabric and drying.
- the labeling reagent zone 4 was attached to the above-mentioned trocellulose membrane provided with the detection zone 6 as it was or after blocking with PBS containing BSA.
- a sample 9 prepared by diluting the recombinant N protein or the culture supernatant with Tris-buffered saline (sample treatment solution) containing 3% BSA (25-30 ⁇ l) was added to the sample spotting zone 8 provided above the labeling reagent zone 4. Subsequently, 300 1 of the developing solution 10 was dropped into the developing solution supply zone 3, and the sample and the substrate were spread on the nitrocellulose membrane. After 15 minutes, the appearance of the line in the detection zone 6 was confirmed. The results are shown in Table 3a.
- the numerical value (color intensity) in the table is the detection level 15 minutes after the start of the reaction.
- the figures are the dilution ratios at which the culture supernatant can be detected.
- GQTVTKKSAAEASKKPRC SEQ ID NO: 3
- PSSM-8 peptide synthesizer
- the method for synthesizing the N5 peptide was in accordance with the method described in the synthesizer.
- the synthesized peptide was bound to keyhole limpet 'and mosine (KLH) according to a conventional method to prepare a KLH conjugate.
- KLH keyhole limpet 'and mosine
- a hybridoma producing a monoclonal antibody against the anti-N protein was prepared by immunizing a mouse with the N5 peptide KLH conjugate prepared in Reference Example 4 and fusing spleen lymphocytes of the mouse with myeoma cells. The details of the production method were performed according to the method described in Example 1, and screening was performed to establish a hybridoma SN5-25 producing an anti-N protein monoclonal antibody.
- the monoclonal antibody obtained from this hybridoma was named SN5-25.
- Example 4 alkaline phosphatase-labeled anti-SARS virus monoclonal antibodies shown in Table 4 were produced. Further, an antibody-immobilized plate shown in Table 4 was prepared in the same manner as in Example 5, and the measurement was performed using the virus culture supernatant. The results are shown in Table 4. The results showed that N protein in the virus culture supernatant could be detected with high sensitivity (samples with high dilution ratio) using a reagent using a monoclonal antibody with a peptide corresponding to SARS nucleoprotein (244-260) as the antigen. .
- the monoclonal antibody or antigen-binding fragment thereof of the present invention can be used for an immunoassay method for detecting or quantifying SARS virus in a sample, a reagent therefor, or an immunoassay instrument.
- SEQ ID NO: 3 Peptide sequence that is also potent with amino acids 244-260 of SEQ ID NO: 2 and cysteine.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Virology (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Medicinal Chemistry (AREA)
- Urology & Nephrology (AREA)
- Hematology (AREA)
- Organic Chemistry (AREA)
- Biomedical Technology (AREA)
- Tropical Medicine & Parasitology (AREA)
- Food Science & Technology (AREA)
- Biotechnology (AREA)
- Cell Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Microbiology (AREA)
- Biophysics (AREA)
- Genetics & Genomics (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Peptides Or Proteins (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/577,310 US20080254440A1 (en) | 2003-10-31 | 2004-10-29 | Anti-Sars Virus Antibody, Hybridoma Producing the Antibody and Immunoassay Reagent Using the Antibody |
JP2005515168A JPWO2005042579A1 (ja) | 2003-10-31 | 2004-10-29 | 抗sarsウイルス抗体、該抗体を産生するハイブリドーマ及び該抗体を用いる免疫測定試薬 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-373779 | 2003-10-31 | ||
JP2003373779 | 2003-10-31 | ||
JP2004034268 | 2004-02-10 | ||
JP2004-034268 | 2004-02-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005042579A1 true WO2005042579A1 (ja) | 2005-05-12 |
Family
ID=34554795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/016099 WO2005042579A1 (ja) | 2003-10-31 | 2004-10-29 | 抗sarsウイルス抗体、該抗体を産生するハイブリドーマ及び該抗体を用いる免疫測定試薬 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20080254440A1 (ja) |
JP (1) | JPWO2005042579A1 (ja) |
WO (1) | WO2005042579A1 (ja) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007043582A1 (ja) * | 2005-10-11 | 2007-04-19 | Sysmex Corporation | Sarsウイルスヌクレオカプシドタンパク質を測定するための測定方法、測定用試薬キット、試験具、sarsウイルスヌクレオカプシドタンパク質に対するモノクローナル抗体及び前記モノクローナル抗体を産生するハイブリドーマ |
CN1903878B (zh) * | 2005-07-26 | 2011-09-07 | 复旦大学 | 抗SARS病毒人源性抗体IgG Fab片段 |
JP2011209140A (ja) * | 2010-03-30 | 2011-10-20 | Sekisui Medical Co Ltd | ヒトc反応性タンパク質(crp)測定用イムノクロマト試薬 |
KR20190006597A (ko) * | 2016-06-09 | 2019-01-18 | 더 리전트 오브 더 유니버시티 오브 캘리포니아 | 종이-기반 면역검정법에서 사용하기 위한 바이오마커 농축 및 신호 증폭, 그리고 dna의 추출, 농축 및 증폭을 위한 단일 플랫폼 |
CN112630426A (zh) * | 2020-11-17 | 2021-04-09 | 上海优晶生物科技有限公司 | 一种用于检测新型冠状病毒covid-19的胶体金试纸条 |
US11209427B2 (en) | 2017-03-27 | 2021-12-28 | The Regents Of The University Of California | Semi-quantitative lateral-flow immunoassay for the detection of CSF leaks |
US11327075B2 (en) | 2016-08-22 | 2022-05-10 | The Regents Of The University Of California | Hydrogel platform for aqueous two-phase concentration of a target to enhance its detection |
US11635432B2 (en) | 2014-03-07 | 2023-04-25 | The Regents Of The University Of California | Methods and devices for integrating analyte extraction, concentration and detection |
US11885803B2 (en) | 2015-09-04 | 2024-01-30 | The Regents Of The University Of California | Methods and devices for analyte collection, extraction, concentration, and detection for clinical applications |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10656079B2 (en) * | 2016-02-01 | 2020-05-19 | Micro Detect, Inc. | UV solid state detection and methods therefor |
CN111435136A (zh) * | 2020-03-03 | 2020-07-21 | 李翀 | 用于检测新型冠状病毒的时间分辨荧光免疫层析试剂盒及其制备方法 |
CN113848319B (zh) * | 2020-04-16 | 2024-04-05 | 杭州博拓生物科技股份有限公司 | 免疫法检测冠状病毒的横向流动检测装置 |
WO2021226123A1 (en) * | 2020-05-06 | 2021-11-11 | Academia Sinica | Recombinant antibodies, kits comprising the same, and uses thereof |
JP6960508B1 (ja) * | 2020-07-29 | 2021-11-05 | シスメックス株式会社 | 試料中のウイルス抗原を測定する方法、抗体セット及び試薬キット |
CN112710844B (zh) * | 2020-12-16 | 2023-07-07 | 北京开景基因技术有限公司 | 用于检测新型冠状病毒中和抗体的半定量试剂盒及方法 |
RU2771288C1 (ru) * | 2021-02-02 | 2022-04-29 | федеральное государственное бюджетное учреждение "Национальный исследовательский центр эпидемиологии и микробиологии имени почетного академика Н.Ф. Гамалеи" Министерства здравоохранения Российской Федерации | Штамм гибридных клеток животных Mus musculus 2E1B5 - продуцент моноклонального антитела к рецептор-связывающему домену белка S вируса SARS-CoV-2 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10300750A (ja) * | 1997-04-23 | 1998-11-13 | Fujirebio Inc | 酵素免疫測定方法及び試験片 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7547512B2 (en) * | 2003-03-24 | 2009-06-16 | The University Of Hong Kong | High-throughput diagnostic assay for the human virus causing severe acute respiratory syndrome (SARS) |
-
2004
- 2004-10-29 WO PCT/JP2004/016099 patent/WO2005042579A1/ja active Application Filing
- 2004-10-29 JP JP2005515168A patent/JPWO2005042579A1/ja active Pending
- 2004-10-29 US US10/577,310 patent/US20080254440A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10300750A (ja) * | 1997-04-23 | 1998-11-13 | Fujirebio Inc | 酵素免疫測定方法及び試験片 |
Non-Patent Citations (3)
Title |
---|
BERRY J.D. ET AL.: "Development and characterization neutralizing monoclonal antibody to the SARS-coronavirus", J. VIROLOGICAL. METHODS, vol. 120, June 2004 (2004-06-01), pages 87 - 96, XP002332533 * |
CHE X.Y. ET AL.: "Rapid and efficient preparation monoclonal antibodies against SARS associated coronavirus nucleocapsid protein by immunizing mice", J. FIRST. MIL. MED. UNIV., vol. 23, no. 7, July 2003 (2003-07-01), pages 640 - 642, XP008028243 * |
CHE X.Y. ET AL.: "Sensitive and specific monoclonal antibody-based capture enzyme immuno assay for detection of nucleocapside antigen in Sera from patients with severe acute respiratory syndrome", J. CLIN. MICROBIOL., vol. 42, no. 6, June 2004 (2004-06-01), pages 2629 - 2635, XP002997483 * |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1903878B (zh) * | 2005-07-26 | 2011-09-07 | 复旦大学 | 抗SARS病毒人源性抗体IgG Fab片段 |
WO2007043582A1 (ja) * | 2005-10-11 | 2007-04-19 | Sysmex Corporation | Sarsウイルスヌクレオカプシドタンパク質を測定するための測定方法、測定用試薬キット、試験具、sarsウイルスヌクレオカプシドタンパク質に対するモノクローナル抗体及び前記モノクローナル抗体を産生するハイブリドーマ |
JP2011209140A (ja) * | 2010-03-30 | 2011-10-20 | Sekisui Medical Co Ltd | ヒトc反応性タンパク質(crp)測定用イムノクロマト試薬 |
US11635432B2 (en) | 2014-03-07 | 2023-04-25 | The Regents Of The University Of California | Methods and devices for integrating analyte extraction, concentration and detection |
US11885803B2 (en) | 2015-09-04 | 2024-01-30 | The Regents Of The University Of California | Methods and devices for analyte collection, extraction, concentration, and detection for clinical applications |
JP7320951B2 (ja) | 2016-06-09 | 2023-08-04 | ザ リージェンツ オブ ザ ユニバーシティ オブ カリフォルニア | ペーパーベースのイムノアッセイにおいて使用するためのバイオマーカー濃縮及びシグナル増幅、ならびにdnaを抽出、濃縮、及び増幅するための単一プラットフォーム |
JP2019525136A (ja) * | 2016-06-09 | 2019-09-05 | ザ リージェンツ オブ ザ ユニバーシティ オブ カリフォルニア | ペーパーベースのイムノアッセイにおいて使用するためのバイオマーカー濃縮及びシグナル増幅、ならびにdnaを抽出、濃縮、及び増幅するための単一プラットフォーム |
KR102592388B1 (ko) | 2016-06-09 | 2023-10-20 | 더 리전트 오브 더 유니버시티 오브 캘리포니아 | 종이-기반 면역검정법에서 사용하기 위한 바이오마커 농축 및 신호 증폭, 그리고 dna의 추출, 농축 및 증폭을 위한 단일 플랫폼 |
US11828755B2 (en) | 2016-06-09 | 2023-11-28 | The Regents Of The University Of California | Biomarker concentration and signal amplification for use in paper-based immunoassays and a single platform for extracting, concentrating, and amplifying DNA |
KR20190006597A (ko) * | 2016-06-09 | 2019-01-18 | 더 리전트 오브 더 유니버시티 오브 캘리포니아 | 종이-기반 면역검정법에서 사용하기 위한 바이오마커 농축 및 신호 증폭, 그리고 dna의 추출, 농축 및 증폭을 위한 단일 플랫폼 |
US11327075B2 (en) | 2016-08-22 | 2022-05-10 | The Regents Of The University Of California | Hydrogel platform for aqueous two-phase concentration of a target to enhance its detection |
US11209427B2 (en) | 2017-03-27 | 2021-12-28 | The Regents Of The University Of California | Semi-quantitative lateral-flow immunoassay for the detection of CSF leaks |
US11867693B2 (en) | 2017-03-27 | 2024-01-09 | The Regents Of The University Of California | Semi-quantitative lateral-flow immunoassay for the detection of CSF leaks |
CN112630426A (zh) * | 2020-11-17 | 2021-04-09 | 上海优晶生物科技有限公司 | 一种用于检测新型冠状病毒covid-19的胶体金试纸条 |
CN112630426B (zh) * | 2020-11-17 | 2023-12-22 | 上海优晶生物科技有限公司 | 一种用于检测新型冠状病毒covid-19的胶体金试纸条 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005042579A1 (ja) | 2008-01-10 |
US20080254440A1 (en) | 2008-10-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20210190797A1 (en) | Methods and reagents for diagnosis of SARS-CoV-2 infection | |
JP2733059B2 (ja) | Htlv−▲iii▼抗体の診断用ペプチド並びにそれらの製造法及び用途 | |
WO2007043582A1 (ja) | Sarsウイルスヌクレオカプシドタンパク質を測定するための測定方法、測定用試薬キット、試験具、sarsウイルスヌクレオカプシドタンパク質に対するモノクローナル抗体及び前記モノクローナル抗体を産生するハイブリドーマ | |
WO2005042579A1 (ja) | 抗sarsウイルス抗体、該抗体を産生するハイブリドーマ及び該抗体を用いる免疫測定試薬 | |
US20060188519A1 (en) | Peptides, antibodies, and methods for the diagnosis of SARS | |
JP5580967B2 (ja) | ブタ繁殖性呼吸器症候群ウイルスに対する抗体を検出するためのペプチド | |
KR102549704B1 (ko) | Pivka-ii의 측정 방법, 및 pivka-ii 면역측정 시약 또는 키트의 제조 방법 | |
WO2011012053A1 (zh) | 检测血液抗环瓜氨酸多肽抗体的试纸条及制备方法 | |
JP7175147B2 (ja) | マイコプラズマ・ニューモニエの免疫学的検出法およびキット | |
JP2022174541A (ja) | SARS-CoV-2の免疫学的検出方法および試薬 | |
WO2005007697A1 (ja) | 抗インフルエンザa型ウイルスモノクローナル抗体及び該抗体を用いる免疫測定器具 | |
JP2022174540A (ja) | SARS-CoV-2の免疫学的検出方法および試薬 | |
JP2016500659A (ja) | 抗ウロプラキンii抗体システムおよび方法 | |
US20100227339A1 (en) | Differential immunoassay for prrs vaccine antibody | |
Xie et al. | Preparation of highly specific monoclonal antibodies against SARS‐CoV‐2 nucleocapsid protein and the preliminary development of antigen detection test strips | |
KR20060054333A (ko) | 항-인플루엔자 b형 바이러스 모노클로날 항체 및 상기항체를 사용하는 면역 측정 기구 | |
JP6808178B2 (ja) | ヒトパルボウイルスb19抗原および抗体の同時検出方法及びキット | |
JP2022528465A (ja) | 対称性ジメチル化アルギニン分析物に対する抗体及びその用途 | |
KR101876535B1 (ko) | 소바이러스성 설사병 바이러스의 탐지용 항체, 이를 이용한 항원 검출 방법, 및 이를 포함하는 탐지키트 | |
US20090111123A1 (en) | Compositions for detecting antibodies to babesia microti and methods of uses thereof | |
US20240280575A1 (en) | Compositions and Methods for the Detection of Mycoplasma | |
KR101329342B1 (ko) | 돼지인플루엔자 바이러스 뉴라미니다아제 검출용 항체 및 이의 용도 | |
CN109884295B (zh) | 假单胞菌多肽、抗体捕获器件及试剂盒 | |
CN116047065A (zh) | 一种能鉴别Omicron株的新型冠状病毒抗原快速检测试剂盒 | |
IL295754A (en) | Methods and reagents for the diagnosis of sars-cov-2 infection |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200480039648.4 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005515168 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1457/KOLNP/2006 Country of ref document: IN |
|
122 | Ep: pct application non-entry in european phase | ||
WWE | Wipo information: entry into national phase |
Ref document number: 10577310 Country of ref document: US |