JP5118321B2 - ヘパリン修飾成分を用いた第Xa因子に基づくヘパリンアッセイ - Google Patents
ヘパリン修飾成分を用いた第Xa因子に基づくヘパリンアッセイ Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/56—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving blood clotting factors, e.g. involving thrombin, thromboplastin, fibrinogen
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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
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54393—Improving reaction conditions or stability, e.g. by coating or irradiation of surface, by reduction of non-specific binding, by promotion of specific binding
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- 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
- G01N2333/90—Enzymes; Proenzymes
- G01N2333/914—Hydrolases (3)
- G01N2333/948—Hydrolases (3) acting on peptide bonds (3.4)
- G01N2333/95—Proteinases, i.e. endopeptidases (3.4.21-3.4.99)
- G01N2333/964—Proteinases, i.e. endopeptidases (3.4.21-3.4.99) derived from animal tissue
- G01N2333/96425—Proteinases, i.e. endopeptidases (3.4.21-3.4.99) derived from animal tissue from mammals
- G01N2333/96427—Proteinases, i.e. endopeptidases (3.4.21-3.4.99) derived from animal tissue from mammals in general
- G01N2333/9643—Proteinases, i.e. endopeptidases (3.4.21-3.4.99) derived from animal tissue from mammals in general with EC number
- G01N2333/96433—Serine endopeptidases (3.4.21)
- G01N2333/96441—Serine endopeptidases (3.4.21) with definite EC number
- G01N2333/96444—Factor X (3.4.21.6)
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- G—PHYSICS
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- G01N2400/00—Assays, e.g. immunoassays or enzyme assays, involving carbohydrates
- G01N2400/10—Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters
- G01N2400/38—Heteroglycans, i.e. polysaccharides having more than one sugar residue in the main chain in either alternating or less regular sequence, e.g. gluco- or galactomannans, Konjac gum, Locust bean gum or Guar gum
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- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Investigating Or Analysing Biological Materials (AREA)
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- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
実施例1
凍結乾燥され、そして再構成されたヒトのクエン酸血漿を、UFヘパリンであるLiquemin(登録商標)(Roche、Basle、Switzerland)1IU/ml又はLMWヘパリンであるFragmin(登録商標)(Pharmacia、Kalamazoo、USA)1IU/mlでスパイクした。血漿サンプル20μlを、ヘパリナーゼI(Dade(登録商標)Hepzyme(登録商標)、Dade Behring Marburg GmbH、Marburg、Germany)0.55U/ml(図1A)又は1.4U/ml(図1B)をさらに含んだアンチトロンビン試薬(AT試薬;凍結乾燥され、そして再構成されたもの、1IU/ml)20μlと37℃で20秒間〜900秒間インキュベートした。次いでこの反応混合物を、第Xa因子試薬[凍結乾燥され、そしてTRIS(6g/l)、EDTA(0.74g/l)及び塩化ナトリウム(12g/l)を添加することにより再構成されたヒトFXa]170μlと混合し、そして37℃で1分間インキュベートした。この反応を、基質試薬(Z−D−Leu−Gly−Arg−ANBA−メチルアミド、4mM)40μlの添加によって開始し、そしてANBAの形成を、自動測定器Sysmex(登録商標)CA−1500(Dade Behring Marburg GmbH、Marburg、Germany)において405nmの波長及び37℃で検出した。AT−ヘパリナーゼ試薬との血漿の種々のインキュベーション時間に対する1分間当たりの吸光度変化(ΔOD/分)を図1に示す。
凍結乾燥され、そして再構成されたヒトのクエン酸血漿を、Liquemin(登録商標)(図2A)又はFragmin(登録商標)(図2B)各々0.24IU/ml、0.48IU/ml、0.72IU/ml、1IU/ml及び1.2IU/mlでスパイクした。AT試薬(凍結乾燥され、そして再構成されたもの、1IU/ml)を、0U/ml〜5.5U/mlまでの漸増濃度のヘパリナーゼI(Dade(登録商標)Hepzyme(登録商標))と混合した。血漿サンプル20μlを、AT−ヘパリナーゼ試薬20μlと各々混合し、そして37℃で20秒間インキュベートした。次いでこの反応混合物を、第Xa因子試薬(実施例1を参照のこと)170μlと混合し、そして37℃で1分間インキュベートした。この反応を、基質試薬(実施例1を参照のこと)40μlの添加によって開始し、そしてANBAの形成を、実施例1にすでに記載されるように自動で検出した。AT−ヘパリナーゼ試薬との血漿の種々の反応混合物に対する1分間当たりの吸光度変化(ΔOD/分)を図2に示す。異なるヘパリナーゼ活性を用いた校正曲線を、このようにシミュレートした。
例示的な試験設計を、UFH及びLMWHの均一な修飾能力、すなわち共通の校正曲線の可能性を説明するためにここで選択した。
凍結乾燥され、そして再構成されたヒトのクエン酸血漿を、Liquemin(登録商標)又はFragmin(登録商標)各々0.24IU/ml、0.48IU/ml、0.72IU/ml、1.00IU/ml及び1.20IU/mlでスパイクした。AT試薬(凍結乾燥され、そして再構成されたもの、1IU/ml)を、ヘパリナーゼI(Dade(登録商標)Hepzyme(登録商標))(1.4U/ml)と混合し、一方ヘパリナーゼを添加されないAT試薬は、コントロールの役割をした。血漿サンプル20μlを、AT試薬20μlと各々混合し、そして37℃で20秒間インキュベートした。次いでこの反応混合物を、第Xa因子試薬(実施例1を参照のこと)170μlと混合し、そして37℃で1分間インキュベートした。この反応を、基質試薬(実施例1を参照のこと)40μlの添加によって開始し、そしてANBAの形成を、実施例1にすでに記載されるように自動で検出した。AT−ヘパリナーゼ試薬との血漿の種々の反応混合物に対する1分間当たりの吸光度変化(ΔOD/分)を図3に示す。
Claims (23)
- 添加された第Xa因子のヘパリン依存性不活性化が定量化され、第Xa因子の添加の前に、このサンプルをヘパリン修飾成分とインキュベートし、そしてインキュベーション後の反応混合物に第Xa因子を添加することを包含する、液体サンプル中のヘパリン活性を測定する方法であって、ここでヘパリン修飾成分は、サンプル中に存在するヘパリンを完全には分解せず、サンプル中に存在するヘパリンが単に修飾されるような様式で利用される、上記方法。
- サンプルが、第Xa因子の添加の前にヘパリナーゼ群由来の酵素、又はグルクロニダーゼ群由来の酵素、又はこれらの群のうちの1つ由来の異なる酵素の混合物、又は両方の群由来の異なる酵素の混合物とインキュベートされる、請求項1に記載の方法。
- サンプルが、第Xa因子の添加の前にヘパリナーゼI、ヘパリナーゼII、ヘパリナーゼIII又はそれらの混合物とインキュベートされる、請求項2に記載の方法。
- サンプルが、第Xa因子の添加の前に混合物中で、0.05U/ml〜5.0U/mlの濃度でヘパリン修飾成分とインキュベートされる、請求項1〜3のいずれか1項に記載の方法。
- サンプルが、第Xa因子の添加の前に混合物中で、0.25U/ml〜1.25U/mlの濃度でヘパリン修飾成分とインキュベートされる、請求項1〜3のいずれか1項に記載の方法。
- サンプルが、第Xa因子の添加の前にヘパリン修飾成分と10秒間〜900秒間インキュベートされる、請求項1〜5のいずれか1項に記載の方法。
- サンプルが、第Xa因子の添加の前にヘパリン修飾成分と15秒間〜90秒間インキュベートされる、請求項1〜5のいずれか1項に記載の方法。
- サンプルが、第Xa因子の添加の前にヘパリン修飾成分と20秒間〜60秒間インキュベートされる、請求項1〜5のいずれか1項に記載の方法。
- 添加された第Xa因子のヘパリン依存性不活性化が、添加されたアンチトロンビンの存在下で定量化される、請求項1〜8のいずれか1項に記載の方法。
- アンチトロンビンが、ヘパリン修飾成分と同時にサンプルに添加される、請求項9に記載の方法。
- さらに、硫酸デキストランがサンプルに添加される、請求項1〜10のいずれか1項に記載の方法。
- 硫酸デキストランが、第Xa因子と同時にサンプルに添加される、請求項11に記載の方法。
- ヘパリン活性が、体液サンプル中で測定される、請求項1〜12のいずれか1項に記載の方法。
- 体液サンプルが血液、血漿、血清又は尿である、請求項13に記載の方法。
- さらにサンプル中のヘパリン活性が、すべてのヘパリン変異体に好適であり、そして任意のヘパリンを用いてあらかじめ作成されている一般的な校正曲線によって、このサンプル中に存在するヘパリンの性質に関係なく定量化される、請求項1〜14のいずれか1項に記載の方法。
- ヘパリン修飾成分を含む試薬及び第Xa因子を含む試薬を備える、請求項1に記載の方法を実施するための試験キット。
- 第Xa因子の基質を含む試薬をさらに備える、請求項16に記載の試験キット。
- アンチトロンビンを含む試薬をさらに備える、請求項16または17に記載の試験キット。
- ヘパリン修飾成分及びアンチトロンビンを含む試薬を備える、請求項16または17に記載の試験キット。
- 第Xa因子を含む試薬が硫酸デキストランをさらに含む、請求項16〜19のいずれか1項に記載の試験キット。
- アンチトロンビンを含む試薬が硫酸デキストランをさらに含む、請求項18〜20のいずれか1項に記載の試験キット。
- 1つ又はそれ以上の試薬が凍結乾燥される、請求項16〜21のいずれか1項に記載の試験キット。
- 請求項1に記載の方法を実施するための請求項16〜22のいずれか1項に記載の試験キットの使用。
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DE102005038418A DE102005038418A1 (de) | 2005-08-12 | 2005-08-12 | Faktor Xa-basierter Heparinassay unter Verwendung einer Heparin-modifizierenden Komponente |
DE102005038418.8 | 2005-08-12 |
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DE102006035580A1 (de) * | 2006-07-27 | 2008-02-14 | Csl Behring Gmbh | Bestimmung der biologischen Aktivität von Heparin in AT III-haltigen Präparationen |
EP2818871A1 (en) * | 2013-06-28 | 2014-12-31 | Roche Diagniostics GmbH | Means and methods for universal calibration of anti-Factor Xa tests |
EP3348649A1 (de) * | 2017-01-16 | 2018-07-18 | Siemens Healthcare Diagnostics Products GmbH | Universales kontrollmaterial für gerinnungsfaktorinhibitor-teste |
CN107727872A (zh) * | 2017-09-01 | 2018-02-23 | 上海太阳生物技术有限公司 | 一种肝素测定的试剂盒 |
EP4041774A4 (en) * | 2019-10-11 | 2023-03-15 | Takeda Pharmaceutical Company Limited | HEPARIN INSENSITIVE ASSAY FOR FACTOR XLA |
WO2022133338A1 (en) * | 2020-12-18 | 2022-06-23 | The Regents Of The University Of California | Antithrombin heparan sulfate for detection and treatment of cancer |
CN115290581B (zh) * | 2021-10-11 | 2023-10-13 | 上海太阳生物技术有限公司 | 抗Xa测定试剂盒和检测抗Xa活性的方法 |
CN114755427B (zh) * | 2022-06-13 | 2022-11-08 | 深圳市帝迈生物技术有限公司 | 一种外源添加抗凝血酶的抗Xa活性测定试剂盒 |
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US4067777A (en) * | 1976-05-13 | 1978-01-10 | Innerfield Irving | Determination of heparin in the blood |
DE2812943C3 (de) * | 1978-03-23 | 1981-05-14 | Boehringer Mannheim Gmbh, 6800 Mannheim | Verfahren und Reagens zur Bestimmung der biologischen Aktivität von Heparin im Plasma |
DE3005540A1 (de) * | 1980-02-14 | 1981-08-20 | Boehringer Mannheim Gmbh, 6800 Mannheim | Verfahren und reagens zur bestimmung der biologischen aktivitaet von heparin im plasma |
US4851336A (en) * | 1985-09-05 | 1989-07-25 | Yin E Thye | Composition, kit, and method for assaying heparinano a method for making the composition |
DE69108896T2 (de) * | 1990-11-05 | 1995-08-24 | Baxter Diagnostics Inc | Verfahren zur bestimmung der konzentration von antikoagulantien. |
US5262325A (en) * | 1991-04-04 | 1993-11-16 | Ibex Technologies, Inc. | Method for the enzymatic neutralization of heparin |
US5714376A (en) * | 1991-10-23 | 1998-02-03 | Massachusetts Institute Of Technology | Heparinase gene from flavobacterium heparinum |
WO2001046385A1 (en) * | 1999-12-21 | 2001-06-28 | Korea Research Institute Of Bioscience And Biotechnolgoy | A new fungal strain acremonium sp. mt70646 (kctc 8973p), novel compounds produced by this strain and their use |
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EP2284535A1 (en) * | 2002-03-11 | 2011-02-16 | Momenta Pharmaceuticals, Inc. | Low molecular weight heparins |
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DE502006007948D1 (de) | 2010-11-11 |
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