KR20200088383A - T-세포 수용체 및 베타 2-마이크로글로불린 발현을 제거하도록 유전자 변형된 불멸화 car-t 세포 - Google Patents
T-세포 수용체 및 베타 2-마이크로글로불린 발현을 제거하도록 유전자 변형된 불멸화 car-t 세포 Download PDFInfo
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Abstract
Description
도 2a 및 도 2b. B2M/HLA-1(도 2a) 및 TCR(도 2b) 녹아웃 TALL-104 세포 집단의 정제. B2M 또는 TCRa 리보핵단백질(RNP) 복합체로 사전에 전기천공된 TALL-104 세포를 PE 항-B2M(도 2a) 또는 PE 항-CD3 항체로 표지하였다. 항체-표지 세포를 항-PE 마이크로비드와 함께 인큐베이션하고, QuadroMACS 분리기에 부착된 LS 컬럼에 통과시켰다. 용출액 중에 수집된 B2M 및 CD3-KO 세포 하위집단을 원심분리하고, 완전 TALL-104 세포 배지 중에 재현탁시키고, 37℃에서 배양하였다.
도 3a 및 도 3b. 유세포측정에 의해 TALL-104 세포 상에서의 BCMA 또는 FN3 도메인을 표적화하는 CAR의 발현 및 검출. TALL-104 BCMA-CAR 세포(도 3a) 및 TALL-104 항-FN3 도메인 CAR 세포(도 3b)를, BD Biosciences FACSCalibur를 사용하여, 모의(mRNA 없음) 전기천공된 대조군 세포(회색)에 대한 결합과 대비하여, 다중클론 항-FN3 도메인 항체 및 접합된 FN3 도메인 각각에 대하여 세포에 대한 결합에 대하여 측정하였다. 데이터를 FlowJo 버전 10을 사용하여 분석하여, 산포도에 의해서는 세포 집단에 대해 그리고 Alexa647 또는 APC 강도에 의해서는 양성 결합에 대해 게이팅하였다.
도 4a 내지 도 4c: BCMA 표적 세포의 TALL-104 CAR-발현 세포 사멸. TALL-104 항-FN3 도메인 CAR 세포를 BCMA-특이적 또는 비표적화된 대조군(NT) FN3 도메인과 동시-인큐베이션한 후 20시간째(도 4a) 및 40시간째(도 4b)에 BCMA 표적 세포의 사멸에 대해 평가하였다. TALL-104 BCMA-CAR 세포(도 4c)를 세포들을 동시-인큐베이션한 후 20시간째에 BCMA 표적 세포의 사멸에 대해 평가하였다.
도 5: TALL-104 세포를 인간 TERT 유전자 및 EGFP를 인코딩하는 렌티바이러스에 의해 형질도입시켰다. 세포들을 EGFP 발현에 대해 분류하고, 이어서 TALL-104 배양 조건에서 증폭되게 하였다. 야생형의 형질도입되지 않은 세포가 배양에서 증식을 정지한 후의 성장 프로파일이 나타나 있다.
도 6: hTERT 양성 TALL-104 세포를 렌티바이러스 p102에 의해 형질도입시키고, 외인성 IL-2의 부재 하에서 유지하였다.
도 7: 세포내 IL-2(p102)를 안정하게 발현하는 TALL-104 세포 또는 wt TALL-104 세포를 F11 BCMA 표적화된 CAR 서열을 인코딩하는 mRNA로 전기천공하고, 다양한 E:T 비로 MM1s 세포와 함께 인큐베이션하였다. % 죽은 표적 MM1s 세포가 E:T 비에 대해 도표로 나타나 있다.
Claims (29)
- 키메라 항원 수용체(CAR)를 발현하는 조작된 불멸화(immortalized) T-세포주로서,
상기 CAR은
(a) 항원 결합 영역을 포함하는 세포외 도메인;
(b) 막관통 도메인; 및
(c) 세포내 신호전달 도메인을 포함하며,
상기 불멸화 T-세포주는 적어도 하나의 내인성 T 세포 수용체를 발현하지 않고 베타 2-마이크로글로불린(B2M)을 발현하지 않는, 조작된 불멸화 T-세포주. - 제1항에 있어서, 상기 항원 결합 영역은 종양 관련 항원에 결합하는, 불멸화 T-세포주.
- 제2항에 있어서, 상기 종양 관련 항원은 BCMA인, 불멸화 T-세포주.
- 제1항에 있어서, 상기 항원 결합 영역은 피브로넥틴 III형(FN3) 도메인에 결합하는, 불멸화 T-세포주.
- 제1항에 있어서, 상기 적어도 하나의 내인성 T 세포 수용체는 녹아웃(knock out)되는, 불멸화 T-세포주.
- 제1항에 있어서, 상기 적어도 하나의 내인성 T 세포 수용체는 TCR-알파인, 불멸화 T-세포주.
- 제1항에 있어서, 상기 적어도 하나의 내인성 T 세포 수용체는 KIR3DL2인, 불멸화 T-세포주.
- 제1항에 있어서, B2M은 녹아웃되는, 불멸화 T-세포주.
- CAR을 발현하는 조작된 TALL-104 세포주로서,
상기 CAR은
(a) 항원 결합 영역을 포함하는 세포외 도메인;
(b) 막관통 도메인; 및
(c) 세포내 신호전달 도메인을 포함하며,
상기 TALL-104 세포주는 적어도 하나의 내인성 T 세포 수용체를 발현하지 않고 베타 2-마이크로글로불린(B2M)을 발현하지 않는, 조작된 TALL-104 세포주. - 제9항에 있어서, 상기 항원 결합 영역은 종양 관련 항원에 결합하는, 세포주.
- 제10항에 있어서, 상기 종양 관련 항원은 BCMA인, 세포주.
- 제9항에 있어서, 상기 항원 결합 영역은 피브로넥틴 III형(FN3) 도메인에 결합하는, 세포주.
- 제9항에 있어서, 상기 적어도 하나의 내인성 T 세포 수용체는 녹아웃되는, 세포주.
- 제9항에 있어서, 상기 적어도 하나의 내인성 T 세포 수용체는 TCR-알파인, 세포주.
- 제9항에 있어서, 상기 적어도 하나의 내인성 T 세포 수용체는 KIR3DL2인, 세포주.
- 제9항에 있어서, B2M은 녹아웃되는, 세포주.
- CAR을 발현하는 조작된 TALL-104 세포주로서,
상기 CAR은
(a) 서열 번호 3의 아미노산 서열을 갖는 신호 펩티드;
(b) 서열 번호 8 내지 44 중 어느 하나의 아미노산 서열을 갖는 FN3 도메인을 포함하는 세포외 도메인;
(c) 서열 번호 4의 아미노산 서열을 갖는 힌지 영역;
(d) 서열 번호 5의 아미노산 서열을 갖는 막관통 도메인; 및
(e) 서열 번호 6의 아미노산 서열을 갖는 공동자극성 도메인 및 서열 번호 7의 아미노산 서열을 갖는 1차 신호전달 도메인을 포함하는 세포내 신호전달 도메인을 포함하며,
상기 세포주는 TRCA, KIR3DL2 및 B2M을 발현하지 않는, 조작된 TALL-104 세포주. - CAR을 발현하는 조작된 TALL-104 세포주로서,
상기 CAR은
(a) 서열 번호 54 및 55 중 어느 하나의 아미노산 서열을 갖는 scFv를 포함하는 세포외 도메인;
(b) 서열 번호 4의 아미노산 서열을 갖는 힌지 영역;
(c) 서열 번호 5의 아미노산 서열을 갖는 막관통 도메인; 및
(d) 서열 번호 6의 아미노산 서열을 갖는 공동자극성 도메인 및 서열 번호 7의 아미노산 서열을 갖는 1차 신호전달 도메인을 포함하는 세포내 신호전달 도메인을 포함하며,
상기 TALL-104 세포주는 TRCA, KIR3DL2 및 B2M을 발현하지 않는, 조작된 TALL-104 세포주. - CAR을 발현하는 조작된 불멸화 T-세포주를 생성하는 시험관내(in vitro) 방법으로서,
a. 불멸화 T-세포주를 제공하는 단계;
b. 적어도 하나의 내인성 T 세포 수용체 및 B2M의 발현을 억제하는 단계; 및
c. 상기 불멸화 T 세포 내로 CAR을 인코딩하는 폴리뉴클레오티드를 도입하는 단계를 포함하는, 방법. - 제19항에 있어서, 단계 b는 단계 c 이전에 일어나는, 방법.
- 제19항에 있어서, 단계 c는 단계 b 이전에 일어나는, 방법.
- 제19항에 있어서, 단계 b는 엔도뉴클레아제를 사용함으로써 수행되는, 방법.
- 제22항에 있어서, 상기 엔도뉴클레아제는 TAL-뉴클레아제, 메가뉴클레아제, 징크-핑거 뉴클레아제(ZFN), 또는 Cas9인, 방법.
- 제19항에 있어서, 단계 c는 전기천공 또는 바이러스-기반 유전자 전달 시스템에 의해 상기 불멸화 T 세포 내로 CAR을 인코딩하는 폴리뉴클레오티드를 도입하는 단계로서 추가로 정의되는, 방법.
- 제4항에 있어서, 상기 바이러스-기반 유전자 전달 시스템은 레트로바이러스 벡터, 아데노바이러스 벡터, 아데노-관련 바이러스 벡터, 또는 렌티바이러스 벡터를 포함하는, 방법.
- 제1항 내지 제18항 중 어느 한 항의 조작된 면역 세포 및 약제학적으로 허용되는 담체를 포함하는, 약제학적 조성물.
- 암의 치료를 필요로 하는 대상체에서 암을 치료하는 방법으로서,
제26항의 약제학적 조성물의 치료적 유효량을 상기 대상체에게 투여하는 단계를 포함하는, 방법. - 제27항에 있어서, 상기 암은 다발성 골수종인, 방법.
- 약제학적 조성물의 생성 방법으로서,
제1항 내지 제18항 중 어느 한 항의 조작된 불멸화 T-세포주를 약제학적으로 허용되는 담체와 배합하여 상기 약제학적 조성물을 얻는 단계를 포함하는, 방법.
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