WO2022244860A1 - 抗ノロウイルス抗体 - Google Patents
抗ノロウイルス抗体 Download PDFInfo
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- WO2022244860A1 WO2022244860A1 PCT/JP2022/020944 JP2022020944W WO2022244860A1 WO 2022244860 A1 WO2022244860 A1 WO 2022244860A1 JP 2022020944 W JP2022020944 W JP 2022020944W WO 2022244860 A1 WO2022244860 A1 WO 2022244860A1
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Classifications
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- 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
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M1/00—Apparatus for enzymology or microbiology
- C12M1/34—Measuring or testing with condition measuring or sensing means, e.g. colony counters
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/30—Immunoglobulins specific features characterized by aspects of specificity or valency
- C07K2317/34—Identification of a linear epitope shorter than 20 amino acid residues or of a conformational epitope defined by amino acid residues
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/005—Assays involving biological materials from specific organisms or of a specific nature from viruses
- G01N2333/08—RNA viruses
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2469/00—Immunoassays for the detection of microorganisms
- G01N2469/10—Detection of antigens from microorganism in sample from host
Abstract
Description
(2) 配列番号3及び配列番号4にそれぞれ示されるアミノ酸配列から成る各ペプチドと抗原抗体反応する、請求項1記載の抗ノロウイルス抗体又はその抗原結合性断片。
(3) 前記抗ノロウイルス抗体がモノクローナル抗体である、(1)又は(2)記載の抗ノロウイルス抗体又はその抗原結合性断片。
(4) 検体中のノロウイルスと、(1)~(3)のいずれか記載の抗ノロウイルス抗体又はその抗原結合性断片との抗原抗体反応を利用した、ノロウイルスの免疫測定方法。
(5) (1)~(3)のいずれか記載の抗ノロウイルス抗体又はその抗原結合性断片を含む、ノロウイルスの免疫測定器具。
常法により作製されたノロウイルス様中空粒子(VLPs)をBALB/cマウスに免疫し、一定期間飼育したマウスから脾臓を摘出し、ケラーらの方法(Kohler et al., Nature, vol, 256, p495-497(1975))により、マウスミエローマ細胞と融合した。得られた融合細胞(ハイブリドーマ)を、37℃インキュベーター中で維持し、その培養上清を用いて、ノロウイルスに対する産生抗体の反応性を調べた。VLPsを140mM NaCl、2.7mM KCl、10mM Na2HPO4、1.8mM KH2PO4、pH7.3(以下、PBSと略す)で0.1μg/mLに希釈した。希釈したVLPsをプラスチック製マイクロタイタープレート(Nunc-Immuno Module F8 Maxisorp Surface plate, 商品名、Nalgen Nunc International社製)のウェルに、1ウェル当たり100μLのVLPs/PBS, pH7.3溶液を加え、4℃、12時間の条件下でVLPsをマイクロタイタープレート上に固相化した。12時間後、ウェルに加えておいたVLPs/PBS溶液をデカンテーションにより除去し、そのマイクロタイタープレートのウェルへPBS、0.05%(v/v)Tween20(以下PBS-Tと略す、Tweenは商品名)を200μL/ウェルで添加し、デカンテーションによるPBS-Tの除去を行った。この洗浄工程を計3回行った。
実施例1で作製した抗ノロウイルスshell領域抗体(SMoAb)について、ノロウイルス遺伝子群に共通するアミノ酸配列を同定し、同定されたアミノ酸配列をもとに、ペプチド合成を行い、同定されたアミノ酸配列を有するペプチドを作製した。作製したペプチドをPBSで0.3μg/mLに希釈した。希釈したペプチドをプラスチック製マイクロタイタープレート(Nunc-Immuno Module F8 Maxisorp Surface plate, 商品名、Nalgen Nunc International社製)のウェルに、1ウェル当たり100μLのノロウイルスペプチド/PBS, pH7.3溶液を加え、4℃、12時間の条件下でノロウイルスペプチドをマイクロタイタープレート上に固相化した。12時間後、ウェルに加えておいたノロウイルスペプチド/PBS溶液をデカンテーションにより除去し、そのマイクロタイタープレートのウェルへPBS-Tを200μL/ウェルで添加し、デカンテーションによるPBS-Tの除去を行った。この洗浄工程を計3回行った。
1. 抗ノロウイルス抗体のニトロセルロースメンブレンへの固定化
ノロウイルスGIのカプシドの突出領域に反応するモノクローナル抗体(GIPMoAb)及びノロウイルスGIIのカプシドの突出領域に反応するモノクローナル抗体(GIIPMoAb)を1.0mg/mLになるように精製水で希釈した液及び抗マウスIgG抗体を準備し、PETフィルムで裏打ちされたニトロセルロースメンブレンに1μL/cmの量で線状に塗布し、テストラインとした。コントロールラインは、抗マウスグロブリン抗体を上記同様に塗布した。本実施例において、抗体固定化メンブレンと呼ぶ。
実施例1で作製した抗ノロウイルスshell領域抗体(SMoAb)を0.5mg/mlになるように精製水で希釈し、これに着色ポリスチレン粒子を0.1%になるように加え、撹拌後、カルボジイミドを1%になるように加え、さらに撹拌した。遠心操作により上清を除き、50mM Tris(pH9.0)、3.0%BSAに再浮遊し、抗ノロウイルス抗体結合着色ポリスチレン粒子を得た。本実施例において、抗体固定化粒子と呼ぶ。
抗体固定化メンブレンと他部材(バッキングシート、吸収帯、サンプルパッド)を貼り合わせて5mm幅に切断し、ノロウイルス試験片とした。これらを本実施例において、試験片と呼ぶ。
各試験片に、任意に希釈したノロウイルスVLPsと抗体固定化粒子を含む検体浮遊液を100μL滴加し、15分間静置した。
Claims (5)
- 配列番号1及び配列番号2にそれぞれ示されるアミノ酸配列から成る各ペプチドと抗原抗体反応する、抗ノロウイルス抗体又はその抗原結合性断片。
- 配列番号3及び配列番号4にそれぞれ示されるアミノ酸配列から成る各ペプチドと抗原抗体反応する、請求項1記載の抗ノロウイルス抗体又はその抗原結合性断片。
- 前記抗ノロウイルス抗体がモノクローナル抗体である、請求項1又は2記載の抗ノロウイルス抗体又はその抗原結合性断片。
- 検体中のノロウイルスと、請求項1又は2記載の抗ノロウイルス抗体又はその抗原結合性断片との抗原抗体反応を利用した、ノロウイルスの免疫測定方法。
- 請求項1又は2記載の抗ノロウイルス抗体又はその抗原結合性断片を含む、ノロウイルスの免疫測定器具。
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JP2009542715A (ja) | 2006-06-30 | 2009-12-03 | キム ラボラトリーズ | ノロウイルス用抗体 |
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