KR102836732B1 - Pd-l1에 대한 단일 도메인 항체 및 이의 용도 - Google Patents
Pd-l1에 대한 단일 도메인 항체 및 이의 용도Info
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Abstract
Description
도 1b는 본 발명의 일 실시예에 따라 제작한 CHO-K1_PD-L1 세포주(PD-L1 항원의 발현을 유도한 CHO-K1 세포)와 PD-1 단백질의 결합 후 항-PD-L1 HCAb(PDL1 Nb#01-IgG1)가 PD-L1/PD-1 상호작용에 미치는 억제능(IC50)을 확인한 도이다.
도 2a는 본 발명의 일 실시예에 따라 제작한 CHO-K1_PD-L1 세포주(PD-L1 항원의 발현을 유도한 CHO-K1 세포)와 항-PD-L1 2가 HCAb(PP Nb-IgG4)를 농도별로 반응하여 세포 표면에서 발현하는 PD-L1 항원에 대한 결합능 (EC50)을 확인한 도이다.
도 2b는 본 발명의 일 실시예에 따라 제작한 CHO-K1_PD-L1 세포주(PD-L1 항원의 발현을 유도한 CHO-K1 세포)와 PD-1 단백질의 결합 후 항-PD-L1 2가 HCAb(PP Nb-IgG4)가 PD-L1/PD-1 상호작용에 미치는 억제능(IC50)을 확인한 도이다.
도 3은 본 발명의 일 실시예에 따라 제작한 항-PD-L1 2가 HCAb(PP Nb-IgG4)의 PD-L1/PD-1 상호작용 저해능을 CHO-K1_PD-L1 세포(PD-L1 단백질의 과발현은 유도한 CHO-K1 세포)와 PD-1이 발현하는 Jurkat 세포를 이용하여 확인한 도이다.
도 4는 본 발명의 일 실시예에 따라 제작한 항-PD-L1 2가 HCAb(PP Nb-IgG4)를 B16F10_PD-L1 세포주(PD-L1 항원의 발현을 유도한 종양세포)로 종양 형성을 유도한 C57BL/6 마우스에 복강투여 후 항종양 효과를 확인한 도이다.
| No | FR1 | 서열번호 |
| 1 | QVQLVESGGGLVQPGGSLRLSCAAS | 6 |
| No | FR2 | 서열번호 |
| 1 | MSWVRQAPGKGLEWVSD | 7 |
| No | FR3 | 서열번호 |
| 1 | DYADSVKGRFTISRDNAKNTLYLQMNSLKPEDTAVYYC | 8 |
| No | FR4 | 서열번호 |
| 1 | RGQGTQVTVSS | 9 |
| 단일 도메인 항체 | 단일 도메인 항체 서열 | 서열번호 |
| 항-PD-L1 sdAb (PDL1 Nb#01) |
QVQLVESGGGLVQPGGSLRLSCAASGFTFSSFAMSWVRQAPGKGLEWVSDINTGGDSTDYADSVKGRFTISRDNAKNTLYLQMNSLKPEDTAVYYCAKGPKEMVHVYSQRGQGTQVTVSS | 1 |
| 단일 도메인 항체 | CDR1 | 서열번호 | CDR2 | 서열번호 | CDR3 | 서열번호 |
| 항-PD-L1 sdAb (PDL1 Nb#01) |
GFTFSSFA | 2 | INTGGDST | 3 | AKGPKEMVHVYSQ | 4 |
| 단일 도메인 항체 | 단일 도메인 항체 서열 + Human IgG1 Fc 서열 | 서열번호 |
| 항-PD-L1 HCAb (PDL1 Nb#01-IgG1) |
QVQLVESGGGLVQPGGSLRLSCAASGFTFSSFAMSWVRQAPGKGLEWVSDINTGGDSTDYADSVKGRFTISRDNAKNTLYLQMNSLKPEDTAVYYCAKGPKEMVHVYSQRGQGTQVTVSSGPGGPEPKSSDKTHTCPPCPAPELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQYNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSRDELTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK | 5 |
| 단일 도메인 항체 | 단일 도메인 항체 서열 | 서열번호 |
| 항-PD-L1 2가 sdAb (PP Nb) |
QVQLVESGGGLVQPGGSLRLSCAASGFTFSSFAMSWVRQAPGKGLEWVSDINTGGDSTDYADSVKGRFTISRDNAKNTLYLQMNSLKPEDTAVYYCAKGPKEMVHVYSQRGQGTQVTVSSGGSGGSQVQLVESGGGLVQPGGSLRLSCAASGFTFSSFAMSWVRQAPGKGLEWVSDINTGGDSTDYADSVKGRFTISRDNAKNTLYLQMNSLKPEDTAVYYCAKGPKEMVHVYSQRGQGTQVTVSS | 10 |
| 단일 도메인 항체 | 단일 도메인 항체 서열 + Human IgG4 Fc 서열 | 서열번호 |
| 항-PD-L1 2가 HCAb (PP Nb-IgG4) |
QVQLVESGGGLVQPGGSLRLSCAASGFTFSSFAMSWVRQAPGKGLEWVSDINTGGDSTDYADSVKGRFTISRDNAKNTLYLQMNSLKPEDTAVYYCAKGPKEMVHVYSQRGQGTQVTVSSGGSGGSQVQLVESGGGLVQPGGSLRLSCAASGFTFSSFAMSWVRQAPGKGLEWVSDINTGGDSTDYADSVKGRFTISRDNAKNTLYLQMNSLKPEDTAVYYCAKGPKEMVHVYSQRGQGTQVTVSSGPGGPESKYGPPCPPCPAPEFLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSQEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKGLPSSIEKTISKAKGQPREPQVYTLPPSQEEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSRLTVDKSRWQEGNVFSCSVMHEALHNHYTQKSLSLSPGK | 11 |
| 단일 도메인 항체 | Kd(M) | kon(1/Ms) | kdis(1/s) |
| 항-PD-L1 HCAb (PDL1 Nb#01-IgG1) |
7.08E-09 | 5.27E+05 | 3.73E-03 |
| 항-PD-L1 2가 HCAb (PP Nb-IgG4) |
4.58E-09 | 4.02E+05 | 1.84E-03 |
Claims (27)
- PD-L1에 특이적으로 결합하는 단일 도메인 항체(sdAb)를 포함하는 항체 또는 이의 항원-결합 단편으로서,
상기 sdAb가 서열번호 2로 표시되는 아미노산 서열로 이루어진 CDR1; 서열번호 3으로 표시되는 아미노산 서열로 이루어진 CDR2; 및 서열번호 4로 표시되는 아미노산 서열로 이루어진 CDR3를 포함하는, 항체 또는 이의 항원-결합 단편.
- 제 1항에 있어서, 상기 sdAb는 하기의 VHH 도메인을 포함하는, 항체 또는 이의 항원-결합 단편:
서열번호 6으로 표시되는 아미노산 서열로 이루어진 FR1;
서열번호 7로 표시되는 아미노산 서열로 이루어진 FR2;
서열번호 8로 표시되는 아미노산 서열로 이루어진 FR3; 및
서열번호 9로 표시되는 아미노산 서열로 이루어진 FR4.
- 제 2항에 있어서, 상기 sdAb는 서열번호 1 및 10 중 어느 하나로 표시되는 아미노산 서열로 이루어진, 항체 또는 이의 항원-결합 단편.
- 삭제
- 삭제
- 삭제
- 제 1항 내지 제 3항 중 어느 한 항에 있어서, 상기 sdAb가 Fc 단편에 융합된 중쇄-단독 항체(HCAb)인, 항체 또는 이의 항원-결합 단편.
- 제 7항에 있어서, 상기 HCAb는 단량체성 또는 다량체성인, 항체 또는 이의 항원-결합 단편.
- 제 7항에 있어서, 상기 Fc 단편은 인간 IgG1, IgG2, IgG3 또는 IgG4인, 항체 또는 이의 항원-결합 단편.
- 제 7항에 있어서, 상기 sdAb가 펩티드 링커를 통해 Fc 단편에 융합되는, 항체 또는 이의 항원-결합 단편.
- 제 7항에 있어서, 상기 HCAb는 서열번호 5 및 11 중 어느 하나로 표시되는 아미노산 서열로 이루어진, 항체 또는 이의 항원-결합 단편.
- 삭제
- 삭제
- 삭제
- 제 1항에 있어서, (a) 상기 sdAb를 포함하는 제 1 항원 결합 부분; 및 (b) 제 2 에피토프에 특이적으로 결합하는 제 2 항원 결합 부분을 포함하는, 항체 또는 이의 항원-결합 단편.
- 제 15항에 있어서, 상기 제 2 항원 결합 부분은 전장 항체, Fab, Fab', (Fab')2, Fv, 단일쇄 Fv(scFv), scFv-scFv, 미니바디, 디아바디 또는 제 2 sdAb인, 항체 또는 이의 항원-결합 단편.
- 제 15항에 있어서, 상기 제 1 항원 결합 부분 및 제 2 항원 결합 부분은 펩티드 링커를 통해 서로 융합되는 것인, 항체 또는 이의 항원-결합 단편.
- 제 1항에 있어서, 면역조정제, 사이토카인, 세포독성제, 화학요법제, 진단제, 항바이러스제, 항미생물제 또는 약물에 접합된 항체 또는 이의 항원-결합 단편.
- 면역조정제, 사이토카인, 세포독성제, 화학요법제, 진단제, 항바이러스제, 항미생물제 또는 약물에 접합된 제1항의 항체 또는 그의 항원-결합 단편을 포함하는 항체 접합체.
- 제 1항의 항체 또는 이의 항원-결합 단편을 암호화하는 핵산 분자.
- 제 20항의 핵산 분자를 포함하는 발현 벡터.
- 제 21항의 발현 벡터로 형질전환된 단리된 숙주 세포.
- (a) 항체가 발현되도록 하는 조건 하에 제 22항의 단리된 숙주 세포를 배양하는 단계; 및
(b) 발현된 항체 또는 이의 항원-결합 단편을 회수하는 단계
를 포함하는, 항체 또는 이의 항원-결합 단편을 생산하는 방법.
- 제 1항의 항체 또는 이의 항원-결합 단편, 또는 제 19항의 항체 접합체를 유효성분으로 함유하는, 암 예방 또는 치료용 약학적 조성물.
- 제 24항에 있어서, 상기 암은 흑색종, 폐암, 간암, 교세포종, 난소암, 대장암, 두경부암, 방광암, 신장세포암, 위암, 유방암, 전이암, 전립선암, 췌장암, 비호지킨 림프종, 호지킨 림프종, 다발성 골수종, 백혈병, 림프종, 골수이형성증후군, 급성 림프모구성 백혈병, 급성 골수성 백혈병, 만성 림프구성 백혈병, 만성 골수성 백혈병, 고립성 골수종 및 재생불량성 빈혈로 이루어진 군으로부터 선택되는, 약학적 조성물.
- 제 24항에 있어서, 상기 약학적 조성물은 약학적으로 허용되는 담체를 더 포함하는, 약학적 조성물.
- (i) 제 1항의 항체 또는 이의 항원-결합 단편과 시료를 접촉시키는 단계; 및
(ii) 상기 항체 또는 이의 항원-결합 단편과 PD-L1 간의 복합체 형성을 검출하거나 복합체의 양을 결정하는 단계를 포함하는,
시료에서 PD-L1을 검출하거나 PD-L1의 양을 결정하는 방법.
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| KR20210022807 | 2021-02-19 |
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| KR20220118962A KR20220118962A (ko) | 2022-08-26 |
| KR102836732B1 true KR102836732B1 (ko) | 2025-07-21 |
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| JP (2) | JP7773238B2 (ko) |
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| BR (1) | BR112023016706A2 (ko) |
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| CN116917321A (zh) | 2023-10-20 |
| US20240132594A1 (en) | 2024-04-25 |
| JP2024513643A (ja) | 2024-03-27 |
| WO2022177393A1 (ko) | 2022-08-25 |
| EP4296283A4 (en) | 2025-03-05 |
| US20240228622A9 (en) | 2024-07-11 |
| AU2022222423A1 (en) | 2023-09-28 |
| JP2025157455A (ja) | 2025-10-15 |
| KR20220118962A (ko) | 2022-08-26 |
| JP7773238B2 (ja) | 2025-11-19 |
| BR112023016706A2 (pt) | 2023-10-31 |
| MX2023009716A (es) | 2024-01-08 |
| AU2022222423A9 (en) | 2024-01-25 |
| EP4296283A1 (en) | 2023-12-27 |
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