KR20180098420A - 디파이브로타이드의 생물학적 활성 측정을 위한 유우글로불린에 기초한 방법 - Google Patents
디파이브로타이드의 생물학적 활성 측정을 위한 유우글로불린에 기초한 방법 Download PDFInfo
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Abstract
Description
도 2는 디파이브로타이드의 표준물질 및 테스트 샘플에 상대적으로 일어나는 S자형 곡선(sigmoid)을 도시하는 플롯이다.
도 3은 적절한 선형 범위(예: 30 내지 35분)를 나타내는 표준 제제(standard preparation)(예를 들어, Sl_Ca, Sl_Cb, Sl_Cc)의 "흡광 대비 시간(absorbance versus time)"을 도시하는 플롯이다.
Claims (14)
- 디파이브로타이드(defibrotide)의 생물학적 활성의 측정방법에 있어서,
a) 디파이브로타이드와, 포유동물 유우글로불린(mammalian euglobulin)과, 플라스민의 반응을 통해 측정가능한 생성물을 제공하는 플라스민에 특이적인 기질을 접촉시키는 단계; 및
b) 연속해서 형성된 생성물의 양을 측정하여 상기 디파이브로타이드의 생물학적 활성을 측정하는 단계;를 포함하는, 디파이브로타이드의 생물학적 활성 측정 방법. - 제1항에 있어서,
상기 유우글로불린은 포유동물 유우글로불린인 것인, 디파이브로타이드의 생물학적 활성 측정 방법. - 제2항에 있어서,
상기 유우글로불린은 인간, 토끼 또는 소 유우글로불린인 것인, 디파이브로타이드의 생물학적 활성 측정 방법. - 제1항에 있어서,
상기 플라스민에 특이적 기질과 반응하는 플라스민은,
유우글로불린에 함유된 플라스미노겐(plasminogen)에 의하여 유리되는 것인, 디파이브로타이드의 생물학적 활성 측정 방법. - 제1항에 있어서,
상기 플라스민에 특이적 기질은,
색소생산 기질(chromogenic substrate)인 것인, 디파이브로타이드의 생물학적 활성 측정 방법. - 제1항에 있어서,
상기 플라스민에 특이적 기질은,
화학식 A1-A2-A3-X인 화합물로서,
여기서 A1 및 A2는 비-극성 아미노산, A3는 리신(lysine) 또는 아르기닌(arginine)이고, X는 측정가능한 생성물인 것인, 디파이브로타이드의 생물학적 활성 측정 방법. - 제6항에 있어서,
상기 측정가능한 생성물 X는 파라니트로아닐린(para-nitroaniline) 및 2-나프틸라민(2-naphthylamine)으로 구성된 군으로부터 선택되는 것인, 디파이브로타이드의 생물학적 활성 측정 방법. - 제4항에 있어서,
상기 플라스민에 특이적 기질은,
H-D-발릴-L-류실-L-리신-p-니트로아닐린(H-D-Valyl-L-Leucyl-L-Lysine-p-nitroaniline)인 것인, 디파이브로타이드의 생물학적 활성 측정 방법. - 제6항에 있어서,
상기 측정가능한 생성물 X는,
분광측정법(spectrophotometry) 또는 형광측정법(fluorimetry)에 의하여 측정되는 것인, 디파이브로타이드의 생물학적 활성 측정 방법. - 제2항에 있어서,
상기 포유동물 유우글로불린은, 원래 혈장과 동일 부피로 재구성되거나 적절한 버퍼로 1:10으로 희석되고, 색소생산/형광생성 기질(chromogenic/fluorogenic substrate)은 2.5 내지 3.5mM의 농도를 가지는 것인, 디파이브로타이드의 생물학적 활성 측정 방법. - 제1항에 있어서,
상기 디파이브로타이드의 생물학적 활성 측정 방법은,
pH 7 내지 8로 완충된 수용액인 반응 배지(reaction medium)에서 수행되는 것인, 디파이브로타이드의 생물학적 활성 측정 방법. - 제1항에 있어서,
35 내지 39℃로 온도가 유지되는 것인, 디파이브로타이드의 생물학적 활성 측정 방법. - 제1항에 있어서,
상기 플라스민 특이적 기질의 농도는,
0.3 내지 4 mM인 것인, 디파이브로타이드의 생물학적 활성 측정 방법. - 제1항에 있어서,
c) 표준 샘플과 테스트 샘플 모두의 효소 반응의 과정 동안, 상기 측정가능한 생성물의 유리 속도(rate of release)를 측정하는 단계; 및
d) 해당하는 디파이브로타이드 농도와 상기 유리 속도를 수학적으로 및/또는 그래프를 이용해서 상호 관련시켜, 디파이브로타이드의 테스트 샘플의 생물학적 활성을 구하는 단계;를 더 포함하는 것인, 디파이브로타이드의 생물학적 활성 측정 방법.
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| DK2637672T3 (en) | 2010-11-12 | 2018-10-22 | Gentium S R L | DEFIBROTID FOR USE IN PROPHYLAXY AND / OR TREATMENT OF GRAPHIC VERSUS HOST DISEASE (GVHD) |
| CN110079580B (zh) | 2012-06-22 | 2022-12-06 | 真蒂奥姆责任有限公司 | 用于测定去纤维蛋白多核苷酸的生物活性的基于优球蛋白的方法 |
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| KR20040090959A (ko) * | 2001-12-17 | 2004-10-27 | 젠티엄 에스피에이 | 디파이브로타이드의 생물학적 활성 측정 방법 |
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