KR102718808B1 - 항-약물 항체를 검출하는 방법 - Google Patents
항-약물 항체를 검출하는 방법 Download PDFInfo
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Abstract
Description
도 2. A). NAb PC는 룰리주맙에 의해 억제된 IL-2 생산을 구조하였다. 적색: EC50이 2.22인 토끼 폴리클로날 Ab; 청색: EC50이 1.45인 마우스 mAb 클론 13H4. B). 상이한 양의 룰리주맙 존재 하의 NAb PC 곡선 (마우스 mAb 클론 13H4). (청색, 적색 및 녹색 선은 0.2, 0.25 및 0.3 μg/mL의 룰리주맙을 나타내고, EC50은 각각 0.53, 0.96 및 1.09임).
도 3. 10개의 개별 SLE 혈청을 검정 배지에 10배 희석한 다음, 세포 검정물에 첨가하였다. 오차 막대는 중복 웰로부터의 표준 편차를 나타낸다.
도 4. 룰리주맙 및 항-룰리주맙 NAb PC의 열 안정성. A). 상이한 단백질의 용융 온도를 비교하기 위해 UNcle 플랫폼에서 측정된 시차 주사 형광측정 (DSF). 수직 오렌지색 막대는 62℃를 나타낸다. B). 룰리주맙; C). 항-룰리주맙 NAb PC를 상이한 온도에서 30분 동안 가열하고, 냉각시킨 다음, 세포-기반 검정물에 첨가하였다. NAb 활성은 0.25 μg/mL 약물의 존재 하에 시험되었다. 원시 값은 상대적 활성을 제시하기 위해 0 μg/mL 그룹으로 정규화되었다. 여기에는 토끼 pAb만이 제시되며, mAb 클론 13H4는 유사한 결과를 가졌다. D). NAb PC의 pH 안정성. 토끼 pAb 또는 마우스 mAb 클론 13H4 NAb PC를 상이한 pH에서 60분 동안 처리하고, 중화시킨 다음, 세포 검정물에 첨가하였다. 원시 값은 상대적 활성을 제시하기 위해 pH 7.0 그룹으로 정규화되었다.
도 5. 검정 민감도 결정. NAb PC를 풀링된 정상 인간 혈청에 스파이킹하고 BEHD 추출하여 세포-기반 검정에서 실행하였다. 오차 막대는 6개의 데이터 세트로부터의 표준 편차를 나타낸다.
Claims (22)
- a) 샘플을 60℃ 내지 68℃의 고온에서 전처리하여 샘플 중의 항-약물 항체 (ADA):약물 면역 복합체를 해리하고 약물을 선택적으로 변성시키는 단계;
b) 해리된 ADA를 매트릭스에 의해 샘플로부터 단리하는 단계;
c) 버퍼를 사용하여 매트릭스로부터 해리된 ADA를 회수하는 단계; 및
d) 세포-기반 검정 또는 시험관내 검정에서 해리된 ADA를 검출하는 단계
를 포함하고, 여기서 약물이 ADA보다 더 낮은 열 안정성을 갖는 것인, ADA:약물 면역 복합체 샘플에서 ADA를 검출하는 방법. - 삭제
- 제1항에 있어서, 고온이 60℃, 61℃, 62℃, 63℃, 64℃, 65℃, 66℃, 67℃ 또는 68℃인 방법.
- 제1항에 있어서, 샘플이 30분 내지 2시간의 기간 동안 고온에서 전처리되는 것인 방법.
- 제1항에 있어서, ADA가 산 처리에 민감한 것인 방법.
- 삭제
- 제1항에 있어서, 약물이 항체 또는 그의 단편, 핵산, 펩티드, 폴리펩티드, 펩티드모방체, 탄수화물, 또는 지질로부터 선택되는 것인 방법.
- 제1항에 있어서, 샘플이 체액, 점액 분비물, 타액, 혈액, 전혈, 혈장, 및 혈청으로 이루어진 군으로부터 선택된 생물학적 샘플인 방법.
- 제1항에 있어서, ADA가 비오티닐화된 약물에 이어서 스트렙트아비딘-코팅된 매트릭스와 접촉함으로써 샘플로부터 단리되는 것인 방법.
- 제1항에 있어서, ADA가 약물과 커플링된 매트릭스에 의해 샘플로부터 단리되는 것인 방법.
- 제9항 또는 제10항에 있어서, 매트릭스가 자기 비드인 방법.
- 제1항에 있어서, 회수된 ADA가 세포-기반 검정에서 검출되는 것인 방법.
- 제12항에 있어서, i) 회수된 ADA를 약물의 존재 하에 세포에 첨가하는 단계; 및 ii) 세포 상에서 약물의 활성의 감소를 측정함으로써 ADA를 검출하는 단계를 포함하는 것인 방법.
- 제1항에 있어서, 회수된 ADA가 시험관내 검정에서 검출되는 것인 방법.
- 제14항에 있어서, i) 회수된 ADA를 검출가능한 표지로 표지된 약물과 접촉시키는 단계; 및 ii) 검출가능한 표지를 측정함으로써 ADA를 검출하는 단계를 포함하는 것인 방법.
- 제15항에 있어서, 검출가능한 표지가 방사성 동위원소, 효소, 형광 표지, 화학발광 표지, 전기화학발광 표지, 또는 효소 검출 반응용 기질인 방법.
- 제1항에 있어서, 약물이 도메인 항체인 방법.
- 제1항에 있어서, 약물이 페길화된 것인 방법.
- 제1항에 있어서, 약물이 룰리주맙인 방법.
- 제1항에 있어서, 고온이 62℃인 방법.
- 제1항에 있어서, 샘플이 혈청인 방법.
- 제1항에 있어서, 샘플이 약물로 치료된 대상체로부터의 것인 방법.
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