KR102610715B1 - 입양 t 세포 요법을 위한 중앙 기억 t 세포 - Google Patents
입양 t 세포 요법을 위한 중앙 기억 t 세포 Download PDFInfo
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Abstract
Description
도 2A-C는 특정 벡터 오픈 리딩 프레임이 도시되어 있다. A는 2,670개의 뉴클레오티드 IL13(EQ)BBZ-T2ACD19t 구축물의 cDNA 오픈 리딩 프레임의 다이어그램으로서, 여기서, IL13(EQ)BBZ CAR의 IL13Rα2-특이적 리간드 IL13(E13Y), IgG4(EQ) Fc 힌지, CD4 막횡단, 4-1BB 세포질 신호전달, 3-글리신 링커, 및 CD3ζ 세포질 신호전달 도메인 뿐만 아니라, T2A 리보솜 스킵 및 말단절단된 CD19 서열이 제시되어 있다. IL13(EQ)BBζ CAR 및 CD19t의 표면 발현을 구동시키는 인간 GM-CSF 수용체 알파 및 CD19 신호 서열 또한 제시되어 있다. B는 숙주 게놈 내로 통합되는 긴 말단 반복부 ('R'로 표시) 측면에 위치하는 서열에 관한 다이어그램이다. C는 IL13(EQ)BBZ-T2A-CD19t_epHIV7 플라스미드 지도이다.
도 3은 pHIV7의 구축을 도시한 것이다.
도 4는 pHIV7의 요소를 도시한 것이다.
도 5는 IL13(EQ)BBζ/CD19t+ TCM에 대한 제조 방식 계획안을 도시한 것이다.
도 6A-C는 표면 트랜스진 및 T 세포 마커 발현의 유세포 분석법 분석 결과를 도시한 것이다. IL13(EQ)BBζ/CD19t+ TCM HD006.5 및 HD187.1을 CD8+ CAR+ 및 CD4+ (즉, CD8 음성) CAR+ 세포를 검출하기 위해 항-IL13-PE 및 항-CD8-FITC로 (A), 또는 CD4+ CD19t+ 및 CD8+ (즉, CD4 음성) CAR+ 세포를 검출하기 위해 항-CD19-PE 및 항-CD4-FITC로 (B) 공동 염색시켰다. IL13(EQ)BBζ/CD19t+ TCM HD006.5 및 HD187.1은 플루오로크롬접합된 항-CD3, TCR, CD4, CD8, CD62L 및 CD28 (회색 히스토그램) 또는 이소타입 대조군 (검은색 히스토그램)으로 염색하였다 (C). 모든 경우에서, 비율(%)은 생존가능한 림프구 (DAPI 음성) 염색된 상기 이소타입에 기초한 것이다.
도 7A-B는 IL13(EQ)BBZ+ TCM의 IL13Rα2-특이적 이펙터 기능의 시험관내 기능성 특징 규명을 도시한 것이다. IL13(EQ)BBZ/CD19t+ TCM HD006.5 및 HD187.1을 CD19t 발현에 기초한 10:1 E:T 비를 사용하는 6시간 동안 51Cr 방출 검정법에서 이펙터로서 사용하였다. IL13Rα2-양성 종양 표적을 IL13Rα2를 발현하도록 K562 조작하였고 (K562-IL13Rα2), 원발성 신경교종 세포주 PBT030-2, 및 IL13Rα2-음성 종양 표적 대조군은 K562 모체 세포주였다 (A). IL13(EQ)BBZ/CD19t+ TCM HD006.5 및 HD187.1을, IL13Rα2-양성 및 음성 표적과 함께 10:1 E:T 비로 밤새도록 공동 배양한 후, 항원-의존성 시토카인 생산에 대하여 평가하였다. 바이오-플렉스 프로 휴먼 시토카인 TH1/TH2 어세이(Bio-Plex Pro Human Cytokine TH1/TH2 Assay) 키트를 사용하여 시토카인 수준을 측정하였고, INF-γ가 기록됨 (B).
도 8A-C는 IL13(EQ)BBζ/CD19t+ TCM의 입양 전달 후, 확립된 신경교종 종양 이종이식편의 퇴행을 입증하는 연구 결과를 도시한 것이다. EGFP-ffLuc+ PBT030-2 종양 세포 (1x105)를 NSG 마우스의 우측 전뇌에 정위 방식으로 이식하였다. 5일째, 마우스는 2x106개의 IL13(EQ)BBζ/CD19t+ TCM (1.1x106개의 CAR+; n=6), 2x106개의 모의 TCM (CAR 없음; n=6) 또는 PBS (n=6)를 받았다. 제노젠 리빙 이미지(Xenogen Living Image)를 사용하여 상대적인 종양 부하량을 보여주는, 각 군으로부터의 대표 마우스 (A). ffLuc 플럭스 (광자/sec)의 정량화는 모의-형질도입된 TCM 및 PBS와 비교하여 IL13(EQ)BBζ/CD19t+ TCM이 종양 퇴행을 유도한다는 것 (#p<0.02, *p<0.001, 반복 측정 ANOVA)을 보여준다 (B). IL13(EQ)BBζ/CD19t+ TCM으로 처리된 마우스에 경우, 생존율이 유의적으로 향상되었음을 입증하는 카플란 마이어(Kaplan Meier) 생존 곡선 (n=6/군) (p=0.0008; log-순위 검정) (C).
도 9A-C는 IL13(EQ)BBZ TCM 및 IL13-제타카인 CTL 클론의 항종양 효능을 비교한 연구 결과를 도시한 것이다. EGFP-ffLuc+ PBT030-2 TS (1x105)를 NSG 마우스의 우측 전뇌에 정위 방식으로 이식하였다. 8일째, 마우스는 1.6x106개의 모의 TCM (CAR 없음), 1.0x106개의 CAR+ IL13(EQ)BBζ TCM (1.6x106개의 전체 T 세포; 63% CAR), 1.0x106개의 IL13-제타카인 CD8+ CTL cl. 2D7 (클로날 CAR+), 또는 비처리 중 하나를 받았다 (n=6/군). 제노젠 리빙 이미지를 사용하여 상대적인 종양 부하량을 보여주는, 각 군으로부터의 대표 마우스 (A). 시간 경과에 따른 ffLuc 플럭스 (광자/sec)의 자연 log의 선형 회귀선, p 값은 군 대 시간 상호작용 비교에 대한 것이다 (B). 카플란 마이어 생존 분석 (n=6/군)은 IL13-제타카인 CD8+ CTL cl. 2D7과 비교하였을 때, IL13(EQ)BBζ TCM으로 처리된 마우스의 경우, 생존율이 유의적으로 향상되었다는 것을 입증한다 (p=0.02; log-순위 검정) (C).
도 10A-C는 IL13(EQ)BBζ TCM 및 IL13-제타카인 CTL 클론의 항종양 효능을 비교한 연구 결과를 도시한 것이다. EGFP-ffLuc+ PBT030-2 TS (1x105)를 NSG 마우스의 우측 전뇌에 정위 방식으로 이식하였다. 8일째, 마우스는 1.3x106개의 모의 TCM (CAR 없음; n=6), 1.0, 0.3 또는 0.1x106개의 CAR+ IL13(EQ)BBζ TCM (78% CAR+; n=6-7), 1.0, 0.3 또는 0.1x106개의 IL13-제타카인 CD8+ CTL cl. 2D7 (클로날 CAR+; n=6-7), 또는 비처리 (n=5)를 받았다. 상대적인 종양 부하량을 보여주는, 각 군으로부터의 대표 마우스의 제노젠 영상화 (A). ffLuc 플럭스 (광자/sec)의 자연 log의 선형 회귀선은 제1 세대 IL13-제타카인 CTL cl. 2D7, 모의 TCM 및 종양 단독인 것과 비교하였을 때, IL13(EQ)BBζ TCM이 우수한 종양 퇴행을 달성한다는 것을 보여준다 (B). 0.1x106개의 IL13(EQ)BBζ TCM 용량이 1.0x106개 용량의 IL13-제타카인 CD8+ CTL cl. 2D7보다 10배 더 높은 정도로 능가한다는 것 (p = 0.043; 웰치(Welch) 두 샘플 t 검정)을 입증하는 종양 주사 후 27일째 각 군당 평균 플럭스 (C).
도 11은 IL13-제타카인 CTL 클론과 비교하였을 때, IL13(EQ)BBζ Tcm이 개선된 지속 효과를 보인다는 것을 입증하는 연구의 결과를 도시한 것이다. T 세포 주입 후 7일째 종양 부위에서 T 세포 지속을 평가하는 CD3 면역조직화학법. IL13(EQ)BBζ Tcm에 대하여 상당수의 T 세포가 검출된다 (상단 패널). 그에 반해, 생존가능한 CD3+ IL13-제타카인 T 세포는 거의 검출되지 않는다 (하단 패널).
도 12A-D는 확립된 큰 종양에 대한 CAR+ T 세포 전달 경로 (i.c. 대 i.v.)를 비교하는 실험의 결과를 도시한 것이다. EGFP-ffLuc+ PBT030-2 TS (1x105)를 NSG 마우스의 우측 전뇌에 이식하였다. 19 및 26일째, 마우스는 5x106 CAR+ IL13(EQ)BBζ+ Tcm (11.8x106개의 전체 세포; n=4), 또는 모의 Tcm (11.8x106개의 세포; n=4) 중 하나를 꼬리 정맥을 통해 i.v. 주사를 맞았다. 대안적으로, 19, 22, 26 및 29일째, 마우스는 1x106개의 CAR+ IL13(EQ)BBζ+ Tcm (2.4x106개의 전체 세포; n=4), 또는 모의 Tcm (2.4x106개의 세포; n=5) 중 하나를 i.c. 주사를 맞았다. 시간 경과에 따른 평균 ffLuc 플럭스 (광자/sec)는 i.c. 전달된 IL13(EQ)BBζ Tcm이 19일된 종양의 종양 퇴행을 매개한다는 것을 보여준다. 그에 반해, i.v. 전달된 T 세포에서는 비처리 대조군 또는 모의 Tcm 대조군과 비교하였을 때, 종양 부하량 감소가 나타나지 않았다 (A). 카플란 마이어 생존 곡선은, i.v. 투여된 CAR+ Tcm으로 처리된 마우스와 비교하였을 때, i.c. IL13(EQ)BBZ Tcm으로 처리된 마우스의 경우, 생존율이 향상되었음을 입증한다 (p = 0.0003 log 순위 검정) (B). IL13(EQ)BBZ+ Tcm으로 i.v. (C) 대 i.c. (D)로 처리된 마우스의 대표적인 H&E 및 CD3 IHC. CD3+ T 세포는 오직 i.c. 처리군에서만 검출되었고, i.v. 처리된 마우스의 경우, 종양에서, 또는 주변 뇌 실질에서는 어떤 CD3+ 세포도 검출되지 않았다.
도 13A-B는 종양내 (i.c.t.) 또는 뇌실내 (i.c.v.) 중 하나로 두개내로 주사된 CAR+ T 세포가 반대쪽 반구 상의 종양으로 이동할 수 있다는 것을 보여주는 연구의 결과를 도시한 것이다. EGFP-ffLuc+ PBT030-2 TS (1x105)를 NSG 마우스의 우측 및 좌측 전뇌에 정위 방식으로 이식하였다. 6일째, 마우스는 1.0x106개의 IL13(EQ)BBζ+ Tcm (1.6x106개의 전체 세포; 63% CAR; n=4)을 우측 종양 부위에 i.c.로 주사를 맞았다. 다초점 신경교종 실험 모델의 개략도 (A). T 세포가 우측 및 좌측 종양 부위, 둘 모두의 부위로 침윤된다는 것을 보여주는 CD3 IHC (B).
도 14는 IL13(EQ)BBζ/CD19t+의 아미노산 서열 (서열식별번호: 10)을 도시한 것이다.
도 15는 IL13(EQ)41BBζ[IL13{EQ}41BBζ T2A-CD19t_epHIV7; pF02630] (서열식별번호: 12) 및 CD19Rop_epHIV7 (pJ01683) (서열식별번호: 13)의 서열 비교를 도시한 것이다.
Claims (20)
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- 인간 대상체로부터 수득된 T 세포 집단을 사용하여 중앙 기억 T 세포 집단을 제조하는 방법이며, 상기 방법은
CD25를 발현하는 세포, CD14를 발현하는 세포, 및 CD45Ra를 발현하는 세포에 대해 T 세포 집단을 고갈시켜 고갈된 T 세포 집단을 제조하는 단계;
고갈된 T 세포 집단을 CD62L을 발현하는 세포에 대하여 강화시켜 중앙 기억 T 세포 집단을 제조하는 단계, 중앙 기억 T 세포 집단을 자극시키는 단계, 및 키메라 항원 수용체를 발현하는 핵산 분자를 세포에 형질도입시켜 유전적으로 변형된 중앙 기억 T 세포 집단을 생성하는 단계
를 포함하며,
CD4+를 발현하는 세포에 대하여 세포 집단을 고갈시키는 단계를 포함하지 않고, CD8+을 발현하는 세포에 대하여 세포 집단을 고갈시키는 단계를 포함하지 않는 것인 방법. - 제5항에 있어서,
중앙 기억 T 세포 집단 중 적어도 50%의 세포가 CD45R0+, CD62L+ 및 CD45Ra-이고,
적어도 10%의 세포가 CD4+이고,
적어도 10%의 세포가 CD8+인, 방법. - 제5항에 있어서, 중앙 기억 T 세포 집단 중 적어도 50%의 세포가 CD45R0+, CD62L+ 및 CD45Ra-이고, 적어도 15%의 세포가 CD4+이고, 적어도 15%의 세포가 CD8+인, 방법.
- 제5항에 있어서, 중앙 기억 T 세포 집단 중 적어도 50%의 세포가 CD45R0+, CD62L+ 및 CD45Ra-이고, 적어도 20%의 세포가 CD4+이고, 적어도 20%의 세포가 CD8+인, 방법.
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- 제5항에 있어서, 중앙 기억 T 세포 집단을 항-CD3 항체 및/또는 항-CD28 항체와 접촉시키는 단계를 포함하는 방법.
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- 제5항에 있어서, 유전적으로 변형된 중앙 기억 T 세포 집단을 확장시키는 단계를 추가로 포함하는 방법.
- 제12항에 있어서, 유전적으로 변형된 중앙 기억 T 세포 집단을 확장시키는 단계가 세포를 IL-2 및 IL-15 모두에 노출시키는 것을 포함하는 것인, 방법.
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