KR20200040819A - 항체를 표적화하기 위한 항 ctla-4 프로바디 치료제 - Google Patents
항체를 표적화하기 위한 항 ctla-4 프로바디 치료제 Download PDFInfo
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Abstract
Description
도 2는 본원에 개시된 전구약물화 개념을 예시하기 위해 사용된 항-CLTA4 항체의 중쇄 가변 영역 VH의 아미노산 서열 (서열식별번호: 1)을 보여주며, 서열식별번호: 1과 카바트 시스템에서의 아미노산 넘버링의 상관관계를 나타내고 Cys 치환에 바람직한 위치를 표시하는 주석이 달려있다.
도 3은 도 2의 항-CLTA4 항체의 경쇄 가변 영역 VL의 아미노산 서열 (서열식별번호: 2)을 보여주며, 서열식별번호: 2와 카바트 시스템에서의 아미노산 넘버링의 상관관계를 나타내고 Cys 치환에 바람직한 위치를 표시하는 주석이 달려있다.
도 4는 본원에 개시된 전구약물화 개념을 예시하기 위해 사용된 항-CD137 항체의 중쇄 가변 영역 VH의 아미노산 서열 (서열식별번호: 3)을 보여주며, 서열식별번호: 3과 카바트 시스템에서의 아미노산 넘버링의 상관관계를 나타내고 Cys 치환에 바람직한 위치를 표시하는 주석이 달려있다.
도 5는 도 4의 항-CD137 항체의 경쇄 가변 영역 VL의 아미노산 서열 (서열식별번호: 4)을 보여주며, 서열식별번호: 4와 카바트 시스템에서의 아미노산 넘버링의 상관관계를 나타내고 Cys 치환에 바람직한 위치를 표시하는 주석이 달려있다.
도 6, 도 7, 도 8 및 도 9는 본 발명의 다양한 화합물의 MALDI 질량 스펙트럼을 보여준다.
도 10a 및 도 10b는 30% 초과의 노출을 갖고 CDR 아미노산의 5 (또는 10) Å 이내에 있는, 항-CTLA4 항체의 중쇄 및 경쇄 내의 Cys 치환 부위를 보여주며, 상기 부위는 카바트 넘버링을 사용하여 확인된다.
도 11a, 도 11b, 도 11c, 도 11d 및 도 11e는 중쇄 또는 경쇄의 다양한 위치에서 전구약물화된 항-CTLA4 항체에 의한 활성화된 CD4+ T-세포에의 결합에 대한 전구약물화 및 후속 전구약물화 기 제거의 효과를 보여준다.
도 12a, 도 12b, 도 13a 및 도 13b는 PBMC 세포에 의한 IL-2 분비에 대한 CTLA4 항체의 전구약물화 및 탈-전구약물화의 효과를 보여준다.
도 14, 도 15a 및 도 15b는 CD137 항체의 활성에 대한 전구약물화의 효과를 보여준다.
Claims (20)
- 화학식 (I)에 따른 전구약물화된 항체이며,
(BM-L)m-Ab (I)
여기서
Ab는 그의 중쇄 또는 경쇄 가변 영역 내의 적어도 1개의 아미노산이 Cys에 의해 대체된 항체이며, 여기서 대체된 아미노산은 (a) 프레임워크 영역 내에 있고; (b) 적어도 30%의 측쇄 노출을 갖고; (c) CDR 아미노산의 10 Å, 바람직하게는 5 Å 이내에 있고;
BM은 Ab가 그의 항원에 결합하는 것을 억제하는 차단 모이어티이고;
각각의 L은 독립적으로 BM 및 Ab에 결합된 링커 모이어티이고, L은 절단가능한 모이어티를 포함하고 상기 Cys에서 Ab에 결합되고;
m은 1, 2, 3 또는 4인
전구약물화된 항체. - 제1항에 있어서, 항체 Ab 내의 적어도 1개의 대체된 아미노산이 중쇄 가변 영역의 카바트 위치 1, 3, 5, 19, 23, 25, 43, 46, 68, 72, 74, 75, 76, 82a, 82b, 83, 84, 85 또는 105, 또는 경쇄 가변 영역의 카바트 위치 1, 3, 5, 7, 8, 18, 20, 45, 57, 60, 63, 65, 66, 67, 69, 77 또는 100에 있는 것인 전구약물화된 항체.
- 제1항에 있어서, 항체 Ab 내의 적어도 1개의 대체된 아미노산이 중쇄의 카바트 위치 23 또는 경쇄의 카바트 위치 67에 있는 것인 전구약물화된 항체.
- 제1항에 있어서, 항체 Ab 내의 적어도 1개의 대체된 아미노산이 중쇄의 카바트 위치 23에 있는 것인 전구약물화된 항체.
- 제1항에 있어서, 항체 Ab 내의 적어도 1개의 대체된 아미노산이 경쇄의 카바트 위치 67에 있는 것인 전구약물화된 항체.
- 제1항에 있어서, 차단 모이어티 BM이 폴리(에틸렌 글리콜)인 전구약물화된 항체.
- 제5항에 있어서, 폴리(에틸렌 글리콜)이 적어도 약 2 kDa의 분자량을 갖는 것인 전구약물화된 항체.
- 제1항에 있어서, L 내의 절단가능한 모이어티가 효소적으로 절단가능한 펩티드인 전구약물화된 항체.
- 제8항에 있어서, 효소적으로 절단가능한 펩티드가 섬유모세포 활성화 단백질 (FAP), 우로키나제-유형 플라스미노겐 활성화제 (uPA, 우로키나제), MT-SP1/매트립타제, 레구마인 및 매트릭스 메탈로프로테아제로 이루어진 군으로부터 선택된 적어도 1종의 효소에 의해 절단가능한 것인 전구약물화된 항체.
- 제9항에 있어서, 효소가 매트립타제인 전구약물화된 항체.
- 제8항에 있어서, 효소적으로 절단가능한 펩티드가 LSGRSDNH (서열식별번호: 5), LSGX (서열식별번호: 16) 또는 LSGK (서열식별번호: 16)인 전구약물화된 항체.
- 경쇄의 카바트 위치 67에 Cys를 갖는 항체.
- 제13항에 있어서, 항-CTLA4 항체인 항체.
- 제14항에 있어서, 항-CTLA4 항체가
(a) 서열식별번호: 1의 아미노산 31-35를 포함하는 중쇄 CDR1;
(b) 서열식별번호: 1의 아미노산 50-66을 포함하는 중쇄 CDR2;
(c) 서열식별번호: 1의 아미노산 99-107을 포함하는 중쇄 CDR3;
(d) 서열식별번호: 2의 아미노산 24-35를 포함하는 경쇄 CDR1;
(e) 서열식별번호: 2의 아미노산 51-57을 포함하는 경쇄 CDR2; 및
(f) 서열식별번호: 2의 아미노산 90-98을 포함하는 경쇄 CDR3
을 갖는 것인 항체. - 제14항에 있어서, 서열식별번호: 1 (여기서 Xaa는 Ala임)의 아미노산 1-118을 포함하는 중쇄 가변 영역 및 서열식별번호: 2 (여기서 Xaa는 Cys임)의 아미노산 1-108을 포함하는 경쇄 가변 영역을 갖는 항체.
- 중쇄의 카바트 위치 23에 Cys를 갖는 항체.
- 제17항에 있어서, 항-CTLA4 항체인 항체.
- 제18항에 있어서, 항-CTLA4 항체가
(a) 서열식별번호: 1의 아미노산 31-35를 포함하는 중쇄 CDR1;
(b) 서열식별번호: 1의 아미노산 50-66을 포함하는 중쇄 CDR2;
(c) 서열식별번호: 1의 아미노산 99-107을 포함하는 중쇄 CDR3;
(d) 서열식별번호: 2의 아미노산 24-35를 포함하는 경쇄 CDR1;
(e) 서열식별번호: 2의 아미노산 51-57을 포함하는 경쇄 CDR2; 및
(f) 서열식별번호: 2의 아미노산 90-98을 포함하는 경쇄 CDR3
을 갖는 것인 항체. - 제18항에 있어서, 서열식별번호: 1 (여기서 Xaa는 Cys임)의 아미노산 1-118을 포함하는 중쇄 가변 영역 및 서열식별번호: 2 (여기서 Xaa는 Ser임)의 아미노산 1-108을 포함하는 경쇄 가변 영역을 갖는 항체.
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| EP3902833A2 (en) | 2018-12-26 | 2021-11-03 | City of Hope | Activatable masked anti-ctla4 binding proteins |
| US20220288223A1 (en) * | 2019-03-12 | 2022-09-15 | The Regents Of The University Of California | Activatable specific binding member complexes, and methods of making and using same |
| US20220251206A1 (en) * | 2019-06-11 | 2022-08-11 | Bristol-Myers Squibb Company | Anti-ctla4 antibody prodruggable (probody) at a cdr position |
| TW202128748A (zh) * | 2020-01-24 | 2021-08-01 | 日商西斯美股份有限公司 | 提升抗體對抗原之親和性的方法及其用途 |
| AR122043A1 (es) * | 2020-05-12 | 2022-08-03 | Bristol Myers Squibb Co | Dosificación y administración del anticuerpo anti-ctla-4 activable |
| US20240376170A1 (en) * | 2023-01-11 | 2024-11-14 | Bright Peak Therapeutics Ag | Conditionally activated proteins and methods of use |
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| US11623965B2 (en) | 2023-04-11 |
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| US20230295346A1 (en) | 2023-09-21 |
| CN111278461A (zh) | 2020-06-12 |
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