KR102232321B1 - 자연살해세포의 제조방법 - Google Patents
자연살해세포의 제조방법 Download PDFInfo
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Abstract
본 발명은 또한, 생물반응기를 이용하여 적절한 배양 조건 하에서 NK 세포를 배양하는 것을 특징으로 하는 NK 세포의 제조방법에 대한 것이다.
본 발명에 따른 제조방법은, 기존 방법에 비해 임상친화적인 방법으로 높은 세포 살해능 및 세포생존율을 갖는 NK 세포를 고순도 및 고효율로 단기간에 생산할 수 있어, NK 세포치료제 생산성을 증대시킬 수 있는 장점이 있다.
Description
(a)는 정치배양 및 현탁배양에 따른 NK 세포성장을 해동 후 12일차 누적 분열횟수로 도식화한 도면이고,
(b)는 정치배양 및 현탁배양에 따른 NK 세포성장을 해동 후 12일차 성장배수로 도식화한 도면이다.
도 2는 현탁배양 전환 시점에 따른 NK 세포성장의 변화를 나타낸 것으로, 0 rpm은 세포해동 후 12일차까지 정치배양한 조건이다. 0→80 rpm (3 days)은 세포해동 후 3일차까지 정치배양 후 80 rpm의 교반속도에서 12일차까지 현탁배양한 조건이다. 0→80 rpm (5 days)은 세포해동 후 5일차까지 정치배양 후 80 rpm의 교반속도에서 12일차까지 현탁배양한 조건이다. 그리고 0→80 rpm (7 days)은 세포해동 후 7일차까지 정치배양 후 80 rpm의 교반속도에서 12일차까지 현탁배양한 조건이다.
(a)는 현탁배양 전환시점에 따른 NK 세포성장을 해동 후 12일차 누적 분열횟수로 도식화한 도면이고,
(b)는 현탁배양 전환시점에 따른 NK 세포성장을 해동 후 12일차 성장배수로 도식화한 도면이다.
도 3은 교반속도에 따른 NK 세포성장의 변화를 나타내는 도면으로, 0 rpm은 세포해동 후 12일차까지 정치배양한 조건이다. 0→80 rpm (5 days)은 세포해동 후 5일차까지 정치배양 후 80 rpm의 교반속도에서 12일차까지 현탁배양한 조건이다. 그리고 0→160 rpm (5 days)은 세포해동 후 5일차까지 정치배양 후 160 rpm의 교반속도에서 12일차까지 현탁배양한 조건이다.
(a)는 교반속도에 따른 NK 세포성장을 해동 후 12일차 누적 분열횟수로 도식화한 도면이고,
(b)는 교반속도에 따른 NK 세포성장을 해동 후 12일차 성장배수로 도식화한 도면이다.
도 4는 지지세포의 재자극 시점에 따른 NK 세포성장의 변화를 나타내는 도면이다. aPDL 2-3은 누적 분열횟수가 2-3회일 때 지지세포의 재자극을 수행한 조건이고, aPDL 3-4는 누적 분열횟수가 3-4회일 때 지지세포의 재자극을 수행한 조건이며, aPDL 4-5는 누적 분열횟수가 4-5회일 때 지지세포의 재자극을 수행한 조건이고, aPDL 5-6은 누적 분열횟수가 5-6회일 때 지지세포의 재자극을 수행한 조건으로, 총 5명의 공여자에게 받은 세포를 비교하였다.
(a)는 지지세포의 재자극 시점에 따른 NK 세포성장을 해동 후 12일차 누적 분열횟수로 도식화한 도면이고,
(b)는 지지세포의 재자극 시점에 따른 NK 세포성장을 해동 후 12일차 성장배수로 도식화한 도면이다.
도 5는 공여자 및 지지세포의 재자극 시점에 대한 해동 후 12일차 누적 분열횟수의 예측 프로파일러를 나타낸 것이다.
도 6은 교반형 생물배양기의 교반속도에 따른 NK 세포성장의 변화를 나타내는 도면으로, 단위부피당 교반력은 0.3 W/m3, 4.8 W/m3, 20.6 W/m3 및 54.6 W/m3이었으며 총 2명의 공여자에게 받은 세포를 비교하였다.
(a)는 교반형 생물배양기의 단위부피당 교반력에 따른 NK 세포성장을 배양 종료 시점의 누적 분열횟수로 도식화한 도면이고,
(b)는 교반형 생물배양기의 단위부피당 교반력에 따른 NK 세포성장을 배양 종료 시점의 성장배수로 도식화한 도면이며,
(c)는 교반형 생물배양기의 단위부피당 교반력에 따른 배양 종료 시점의 역가 (세포 살해능)를 도식화한 도면이다.
도 7은 교반형 생물배양기의 온도, pH, 접종 세포 농도 및 목표 세포 농도에 대한 누적 분열횟수, 배양 종료시점의 세포 농도, 역가 (10:1) 및 역가 (3:1)의 예측 프로파일러를 나타낸 것이다.
현탁배양 시점 및 교반 속도 조건 | ||||
조건# | 배양 용기 | 배양 환경 | 현탁배양 시점 | 교반 속도 (rpm) |
1 | 쉐이크 플라스크 | 정치배양 | - | 0 |
2 | 쉐이크 플라스크 | 정치배양 → 현탁배양 | 해동 후 7일차 | 60 |
3 | 쉐이크 플라스크 | 정치배양 → 현탁배양 | 해동 후 7일차 | 160 |
4 | 쉐이크 플라스크 | 현탁배양 | 해동 후 | 60 |
현탁배양 시점 조건 | ||||
조건# | 배양 용기 | 배양 환경 | 현탁배양 시점 | 교반 속도 (rpm) |
1 | 쉐이크 플라스크 | 정치배양 | - | 0 |
2 | 쉐이크 플라스크 | 정치배양 → 현탁배양 | 해동 후 3일차 | 80 |
3 | 쉐이크 플라스크 | 정치배양 → 현탁배양 | 해동 후 5일차 | 80 |
4 | 쉐이크 플라스크 | 정치배양 → 현탁배양 | 해동 후 7일차 | 80 |
현탁배양시 shaker의 교반 속도 조건 | ||||
조건# | 배양 용기 | 배양 환경 | 현탁배양 시점 | 교반 속도 (rpm) |
1 | 쉐이크 플라스크 | 정치배양 | - | 0 |
2 | 쉐이크 플라스크 | 정치배양 → 현탁배양 | 해동 후 5일차 | 80 |
3 | 쉐이크 플라스크 | 정치배양 → 현탁배양 | 해동 후 5일차 | 160 |
지지세포를 이용한 반복 자극(재자극) 시점 | ||
조건# | 공여자 | 재자극 시점 (누적 PDL) |
1 | Donor A | 2-3 |
2 | 3-4 | |
3 | 4-5 | |
4 | Donor B | 2-3 |
5 | 3-4 | |
6 | 4-5 | |
7 | Donor C | 2-3 |
8 | 3-4 | |
9 | 4-5 | |
10 | Donor D | 3-4 |
11 | 4-5 | |
12 | 5-6 | |
13 | Donor E | 4-5 |
14 | 5-6 |
생물배양기 공정 파라미터 | |||
파라미터 | 최소값 | 중간값 | 최대값 |
교반 속도 (rpm) | 260 | ||
DO (%) | 50 | ||
온도 (℃) | 34 | 35.5 | 37 |
pH | 6.8 | 7.0 | 7.2 |
접종 세포 농도 (x106 cells/mL) | 0.2 | 0.6 | 1.0 |
목표 세포 농도 (x106 cells/mL) | 0.4 | 0.7 | 1.0 |
DOE 실험 조건 ( DSD , definitive screening designs) | ||||
조건# | 접종 세포 농도 (x106 cells/mL) |
목표 세포 농도 (x106 cells/mL) |
온도 (℃) |
pH |
1 | 0.6 | 1.0 | 37 | 7.2 |
2 | 0.6 | 0.4 | 34 | 6.8 |
3 | 1.0 | 0.7 | 37 | 6.8 |
4 | 0.2 | 0.7 | 34 | 7.2 |
5 | 1.0 | 0.4 | 35.5 | 7.2 |
6 | 0.2 | 1.0 | 35.5 | 6.8 |
7 | 1.0 | 1.0 | 34 | 7.0 |
8 | 0.2 | 0.4 | 37 | 7.0 |
9 | 0.6 | 0.7 | 35.5 | 7.0 |
성장 및 역가에 대한 생물배양기 공정 파라미터들의 유의성 확인 | |||
파라미터 | 누적 분열횟수 | 역가 (10:1, %) |
역가 (3:1, %) |
R2 | 0.982 | 0.901 | 0.995 |
R2 adj | 0.950 | 0.819 | 0.987 |
P value | 0.003 | 0.006 | = 0.001 |
Lack of fit (P value) | 0.339 | 0.981 | 0.275 |
Claims (16)
- 다음 단계를 포함하는 NK 세포의 제조방법:
(a) NK 세포를 포함하는 세포 배양액을 지지세포로 자극한 후 정치배양하는 단계;
(b) 상기 (a) 단계의 지지세포 자극 후 3 내지 7일 뒤 상기 정치배양된 세포 배양액을 현탁배양하는 단계; 및
(c) 상기 세포 배양액 내 단핵구의 누적 분열 횟수가 3 내지 5가 되는 시점에 상기 현탁배양된 세포 배양액에 지지세포를 첨가하여 재자극시킨 후, 현탁배양하는 단계.
- 삭제
- 제1항에 있어서, (c) 단계의 현탁배양은 30~300 rpm의 교반속도 하에서 수행하는 것을 특징으로 하는 방법.
- 제1항에 있어서, (a) 단계의 배양은 항-CD3 항체가 첨가된 배지에서 수행하는 것을 특징으로 하는 방법.
- 제4항에 있어서, 상기 항-CD3 항체는 OKT3, UCHT1 및 HIT3a로 구성된 군에서 선택되는 하나 이상인 것을 특징으로 하는 방법.
- 제1항에 있어서, (a) 단계의 배양은 인터루킨-2(IL-2), 인터루킨-12(IL-12), 인터루킨-15(IL-15), 인터루킨-18(IL-18) 및 인터루킨-21(IL-21)로 구성된 군에서 선택되는 하나 이상의 사이토카인이 첨가된 배지에서 수행하는 것을 특징으로 하는 방법.
- 제1항에 있어서, 상기 지지세포는 불활성화된 말초혈 단핵구 세포인 것을 특징으로 하는 방법.
- 제1항에 있어서, 상기 단계 (a)의 세포 배양액은 CD3 양성 세포가 제거된 말초혈 단핵구를 포함하는 것을 특징으로 하는 방법.
- 제1항 및 제3항 내지 제8항 중 어느 한 항의 방법에 의해 제조된 NK 세포의 배양액을 단위부피당 교반력이 10 내지 30 W/m3의 범위에서 조절되는 교반형 생물반응기에 접종하는 단계를 포함하는 NK 세포의 제조방법.
- 제9항에 있어서, 상기 생물반응기는 pH를 6.5 내지 7.6, 배양 온도를 25 내지 40℃의 범위에서 조절하는 것을 특징으로 하는 NK 세포의 제조방법.
- 삭제
- 제9항에 있어서, 상기 접종시의 생물반응기 내 NK 세포 농도는 0.1 내지 2.0 x106 cells/mL 인 것을 특징으로 하는 NK 세포의 제조방법.
- 제9항에 있어서, NK 세포의 배양 기간 동안 목표 세포농도(첨가물 첨가 후의 세포 농도, Feeding target cell density)는 0.4 내지 1.0 x 106 cells/mL인 것을 특징으로 하는 NK 세포의 제조방법.
- 삭제
- 삭제
- 삭제
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EP3770251A4 (en) | 2021-12-22 |
JP2022065102A (ja) | 2022-04-26 |
CA3094610A1 (en) | 2019-09-26 |
CN111902533A (zh) | 2020-11-06 |
US20210147803A1 (en) | 2021-05-20 |
KR20190111804A (ko) | 2019-10-02 |
AU2019237832A1 (en) | 2020-10-29 |
IL277467A (en) | 2020-11-30 |
EP3770251A1 (en) | 2021-01-27 |
JP2021518122A (ja) | 2021-08-02 |
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