JP5391071B2 - ガストリン放出ペプチド前駆体に対する抗体及びその使用 - Google Patents
ガストリン放出ペプチド前駆体に対する抗体及びその使用 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/26—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against hormones ; against hormone releasing or inhibiting factors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- 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
- G01N33/574—Immunoassay; Biospecific binding assay; Materials therefor for cancer
- G01N33/57484—Immunoassay; Biospecific binding assay; Materials therefor for cancer involving compounds serving as markers for tumor, cancer, neoplasia, e.g. cellular determinants, receptors, heat shock/stress proteins, A-protein, oligosaccharides, metabolites
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- G—PHYSICS
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- 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
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- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/435—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans
- G01N2333/575—Hormones
- G01N2333/5758—Gastrin releasing peptide
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2800/00—Detection or diagnosis of diseases
- G01N2800/56—Staging of a disease; Further complications associated with the disease
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Description
凍結保存した検体におけるProGRP測定値を100%として、4℃で1、4、7日間保存した検体におけるProGRPの測定値を表4に示す。
各モノクローナル抗体0.5mgを1mLの0.1Mリン酸ナトリウム緩衝液(pH8.0)に添加し、ジメチルホルムアミドに溶解したSulfo−NHS−Biotin(PIERCE)をモル比IgG:Biotin=1:20となるように添加し、室温で60分間ゆるやかに攪拌した。1.5Mグリシン溶液(pH8.9)を100μL添加して、室温で10分間ゆるやかに攪拌した。PBSを移動相としてゲルろ過を行い、ビオチン化モノクローナル抗体を得た。
96ウエルマイクロプレートの各ウエルに、各モノクローナル抗体を5μg/mLの濃度で抗体固定液(0.5M NaClを含む0.1M炭酸緩衝液、pH9.6)に溶解した溶液100μLを加え、4℃で一晩インキュベートした。0.15M NaClを含む10mMリン酸緩衝液(pH7.3)で2回洗浄後、ブロッキング液(0.5%カゼインナトリウム、2%スクロースを含む10mMリン酸緩衝液、pH7.1)を350μL加え2時間静置しブロッキングした。ブロッキング液を除去後、反応液(1%BSA、0.05%カゼインナトリウム、1%ポリビニルピロリドン、10mM EDTA−2Na、0.15M NaCl、0.05%Tween20を含む0.1Mリン酸ナトリウム緩衝液、pH7.2)100μLと組換え体ProGRP(0、100、500、2000pg/mL)を50μLずつ各ウエルに加え、37℃で1時間反応させた。洗浄液(0.05%Tween20を含む10mMリン酸緩衝液、pH7.3)で5回洗浄し、ビオチン化した各モノクローナル抗体を1μg/mLの濃度で反応液に溶解させたものを100μL添加して室温で30分間反応させた。反応液で希釈したHRP標識をしたアビジンD(Vector)溶液100μLを添加して、室温で30分間反応させた。洗浄液で5回洗浄し、基質溶液(2mg/mLのオルトフェニレンジアミン、30%過酸化水素水0.9μL/mLを含む0.1Mクエン酸リン酸緩衝液、pH5.0)100μLを加え、20分間インキュベートし、2N硫酸を100μL加えて酵素反応を停止させた。マイクロプレートリーダーで492nm(リファレンス波長600nm)の吸光度を測定した。その反応性を、5段階(高い順から、☆;非常に高い反応性、◎;高い反応性、〇;中程度の反応、△;わずかな反応性、×;反応せず)に分けて表5に示した。
Claims (8)
- 配列番号1に示されるアミノ酸配列の47−68番目のアミノ酸配列によって提示されるエピトープを認識する2種以上の異なるモノクローナル抗体を用いて、ガストリン放出ペプチド前駆体及び/又はその分解物を測定する方法であって、
該2種以上の異なるモノクローナル抗体は、少なくとも寄託番号FERM BP−10991で寄託されたハイブリドーマGCY9が産生するモノクローナル抗体、及び、寄託番号FERM BP−10992で寄託されたハイブリドーマGCY17が産生するモノクローナル抗体を含む、
方法。 - サンドイッチ免疫測定法である、請求項1に記載の方法。
- 寄託番号FERM BP−10991で寄託されたハイブリドーマGCY9が産生するモノクローナル抗体。
- 寄託番号FERM BP−10992で寄託されたハイブリドーマGCY17が産生するモノクローナル抗体。
- 寄託番号FERM BP−10991で寄託されたハイブリドーマGCY9。
- 寄託番号FERM BP−10992で寄託されたハイブリドーマGCY17。
- 請求項3に記載のモノクローナル抗体、及び請求項4に記載のモノクローナル抗体を含む、ガストリン放出ペプチド前駆体もしくはその分解物を測定するためのキット。
- 癌の診断又は治療効果のモニタリングを行うためのキットである、請求項7に記載のキット。
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