KR101794638B1 - Bax- 및 bak-결함 세포주들의 제조 방법 및 조성물 - Google Patents
Bax- 및 bak-결함 세포주들의 제조 방법 및 조성물 Download PDFInfo
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Abstract
Description
도 2, 패널 A 부터 D는 MDCK 세포에서 ZFN에 의한 BAK 및 BAX 유전자들의 변형을 설명한다. 도 2a는 BAK 표적화된 ZFN 처리된 세포 모음(pool) (17623/17622 또는 17627/17626) 및 ZFN 처리 안 된 세포들 ("벡터 단독")에서 CEL-I 분석에서 절단 과정들로 인하여 생성된 PCR 산물들을 보여주는 겔이다. BAK 유전자 자리에서 ZFN 에 의해 변형된 대립유전자들의 비율이 좌측 끝 두 개 라인 아래에 표시되어 있다. 도 2b는 BAX 표적화된 ZFN 처리된 세포 모음(17658/17659) 및 ZFN 처리 안 된 세포들 ("벡터 만")에서 CEL-I 분석에서 절단 과정들로 인하여 생성된 PCR 산물들을 보여주는 겔이다. BAX 유전자 자리에서 ZFN 에 의해 변형된 대립유전자들의 비율이 우측 끝 라인 아래에 표시되어 있다(8%). 도 2c는 BAK 표적화된 ZFN으로 처리된 다양한 MDCK 클론들의 PCR 결과를 보여준다. 클론 번호는 각 라인의 위에 표시하였고, 나타낸 각 BAK 대립유전자에서 돌연변이는 겔 아래 표시해두었다. 도 2d는 BAX 특이적 ZFN으로 처리된 MDCK 세포들의 PCR 분석을 요약한 것이다. 도면으로부터 볼 수 있는 것과 같이, 하나의 대립유전자상에 30bp의 결실과, 다른 대립유전자상에 1bp의 삽입된 BAX 단일 녹아웃들이 수득되었다. BAX/BAK 이중 녹아웃의 경우, BAX 대립유전자들은 BAX 특이적 ZFN을 이용하여 Bak 결함 클론내에서 표적화되었다. 볼 수 있는 것과 같이, 한 개의 와일드타입 BAX 대립유전자, 및 한 개의 돌연변이된 BAX 대립유전자를 포함하는 몇 가지 이형접합체 클론들이 확인되었다.
도 3 은 Bak 녹아웃 세포들에서 RNA 분석을 나타낸다. 겔에서 라인 1 내지 5 는 표시된 클론들과 대조군의 엑손 1-4로부터 Bak 전사체들의 RT-PCR 산물들을 보여준다. 라인6-10은 동일한 클론들과 대조군의 엑손 4-6로부터 Bax 전사체들의 RT-PCR 산물들을 보여준다. 라인 4에서 화살표로 나타낸 것과 같이, 클론 8H6 (화합물 이형접합체 클론)로부터 형성된 전사체들의 대부분은 엑손 2를 건너뛴다.
도 4, 패널 A 및 B는 Bak 8H6 녹아웃의 배경에서 생성된 21개 포지티브 Bak/Bax 이중 녹아웃 클론의 PCR 산물의 분석을 나타낸다. 클론 번호는 각 라인의 윗 부분에 표시해두었다. 분석된 79개 클론중에서 21개 (27%)가 Bsl I으로 절단되었는데, 이는 ZFN 절단 부위에 돌연변이가 있다는 것을 나타낸다. 도 4a의 Bsl I 저항성 대립유전자들의 서열은 도 4b에 나타낸다. 꼭대기 라인(52F/114R)은 배열을 위하여 4bp 갭이 삽입된 야생형서열이다. 30, 35, 45, 71 및 97로 지정된 클론에서 삽입 및 결실은 크기 때문에 나타내지 않는다. 클론 #100의 유전자 타입은 결정되지 않았다.
도 5는 Bax/Bak 이중 녹아웃 세포들에서 Bax 및 Bak 단백질 발현을 설명한다. 클론 번호는 각 라인 위에 표시해두었고, 탐지용으로 이용된 항체는 각 라인 아래 표시되어 있다 (Abcam #7977- Bax 단백질용 및 Sigma B5877-Bak 단백질용). 나타낸 것과 같이, 이중 KO 세포들은 전장의 또는 절두된 Bax 및 Bak 단백질들을 생산하지 않는다.
도 6 은 세포자멸의 지표가 되는 카스파제 활성(Caspases Roche Diagnostics Corporation)에 의해 측정된 것과 같이, Bax/Bak 이중 KO 세포들에서 세포자멸을 나타내는 그래프다. 흰색 막대는 1μM 스타우로스포린으로 유도된 후 카스파제 활성을 나타내고; 회색 막대는 유도 안 된 세포를 나타낸다. 테스트된 Bax-Bak-/- 클론들은 다음과 같다: 클론 47 (좌측으로부터 두 번째 막대들); 클론 71 (우측으로부터 두 번째 막대들); 및 클론 91 (가장 우측의 막대들).
도 7 은 BAX 및/또는 BAK 녹아웃 세포 클론들에서 단백질(단클론성 항체)생산을 나타내는 그래프다. 다이아몬드는 야생형 CHO 세포들에서 항체 생산을 나타내고, 사각형은 클론 8H6-71 BAX - BAK -/- CHO 세포들에서 단백질 생산을 설명한다.
Claims (18)
- BAK 유전자 내의 표적 부위에 특이적으로 결합하는 아연 핑거 단백질로서, DNA-결합 도메인은 N-말단에서 C-말단으로 4개의 아연 핑거 도메인을 가진 단백질에 대하여 F1 내지 F4, 5개의 아연 핑거 도메인을 가진 단백질에 대하여 F1 내지 F5 및 6개의 아연 핑거 도메인을 가진 단백질에 대하여 F1 내지 F6의 순서의 4개, 5개 또는 6개의 아연 핑거 인식 부위를 포함하고, 상기 아연 핑거 단백질은 하기 아미노산 서열을 상기 아연 핑거 인식 부위 내에 가진 단백질로 구성된 군으로부터 선택되는 아연 핑거 단백질:
(i) F1: RSDHLTT (SEQ ID NO: 9);
F2: RSDHLSE (SEQ ID NO:10);
F3: RNDNRKT (SEQ ID NO:11);
F4: QSGHLQR(SEQ ID NO:12); 및
F5: QSGHLSR (SEQ ID NO:13); 이때 상기 단백질은 SEQ ID NO: 23으로 나타내는 표적 부위에 결합하고;
(ii) F1: RSDSLSA (SEQ ID NO:14);
F2: DRSSRTK (SEQ ID NO:15);
F3: RSDDLTR (SEQ ID NO:16); 및
F4: RSDALAR (SEQ ID NO:17); 이때 상기 단백질은 SEQ ID NO: 24로 나타내는 표적 부위에 결합하고;
(iii) F1: DRSHLSR (SEQ ID NO:34);
F2: TSGSLTR (SEQ ID NO:35);
F3: RSDSLSA (SEQ ID NO:14);
F4: DRSSRTK (SEQ ID NO:15);
F5: RSDNLSE (SEQ ID NO:36); 및
F6: HSNARKT (SEQ ID NO:37); 이때 상기 단백질은 SEQ ID NO: 33으로 나타내는 표적 부위에 결합하고;
(iv) F1: RSDNLSV (SEQ ID NO:39);
F2: DRSNLTR (SEQ ID NO:40);
F3: RSDTLSE (SEQ ID NO:41); 및
F4: RSQTRKT (SEQ ID NO:42); 이때 상기 단백질은 SEQ ID NO: 38로 나타내는 표적 부위에 결합하고;
(v) F1: QNAHRKT (SEQ ID NO:50);
F2: QSGDLTR (SEQ ID NO:53);
F3: QSGDLTR (SEQ ID NO:53);
F4: QSSNLAR (SEQ ID NO:54); 및
F5: TSSNRKT (SEQ ID NO:55); 이때 상기 단백질은 SEQ ID NO: 52로 나타내는 표적 부위에 결합하고;
(vi) F1: RSDNLAR (SEQ ID NO:57);
F2: QSGDLTR (SEQ ID NO:53);
F3: DNRQLIT (SEQ ID NO:58);
F4: TSSNLSR (SEQ ID NO:8);
F5: RSDTLSR (SEQ ID NO:59); 및
F6: RNDDRIT (SEQ ID NO:60); 이때 상기 단백질은 SEQ ID NO: 56으로 나타내는 표적 부위에 결합하고;
(vii) F1: RSDNLTT (SEQ ID NO:62);
F2: RSDHLSR (SEQ ID NO:63);
F3: QSSDLRR (SEQ ID NO:64);
F4: QSSHLTR (SEQ ID NO:3); 및
F5: RSDHLTQ (SEQ ID NO:65); 이때 상기 단백질은 SEQ ID NO: 61로 나타내는 표적 부위에 결합하고; 및
(viii) F1: QSGSLTR (SEQ ID NO:67);
F2: TSSNRKT (SEQ ID NO:55);
F3: DRSHLTR (SEQ ID NO:68):,
F4: RSDDRKT (SEQ ID NO:69);
F5: NRTDLIR (SEQ ID NO:7); 및
F6: TSSNLSR (SEQ ID NO:8); 이때 상기 단백질은 SEQ ID NO: 66으로 나타내는 표적 부위에 결합한다. - 제1항의 아연 핑거 단백질 및 적어도 하나의 절단 도메인 또는 적어도 하나의 절단 하프-도메인을 포함하는 융합 단백질.
- 제2항에 있어서, 상기 절단 하프-도메인은 야생형 또는 조작된 FokI 절단 하프-도메인인 융합 단백질.
- 제1항 내지 제3항 중 어느 하나의 항의 아연 핑거 단백질을 인코딩하는 폴리뉴클레오티드.
- 제1항 내지 제3항 중 어느 하나의 항의 단백질을 포함하는 분리된 세포.
- 제4항에 따른 폴리뉴클레오티드를 포함하는 분리된 세포.
- 제2항의 융합 단백질을 사용하여 BAK 유전자가 부분적으로 또는 완전히 비활성화된 세포주.
- 세포에서 내생성 세포 Bak의 비활성화 방법에 있어서, 상기 방법은
제2항에 따른 제1 융합 단백질을 인코딩하는 제1 핵산을 세포 내로 도입시키고, 이로 인해 제1 융합 단백질이 그것의 표적 부위에 결합하고 Bak 유전자를 절단하는 단계를 포함하는 방법. - 제8항에 있어서, 제2 융합 단백질을 인코딩하는 핵산을 도입시키고, 이로 인해 제1 및 제2 융합 단백질이 이들 각각의 표적 부위에 결합하여 Bak 유전자를 절단하게 되는 단계를 추가로 포함하는 방법.
- 제8항에 있어서, 상기 제1 및 제2 폴리펩타이드는 동일한 핵산에 의해 인코딩되는 방법.
- 제8항에 있어서, 상기 제1 및 제2 폴리펩타이드는 상이한 핵산에 의해 인코딩되는 방법.
- 숙주세포에서 관심 재조합 단백질을 생산하는 방법에 있어서, 상기 방법은,
(a) 내생성 Bax 유전자를 포함하는 숙주세포를 제공하는 단계;
(b) 제8항 내지 제11항 중 어느 하나의 항의 방법에 따라 숙주세포의 내생성 Bax 유전자를 비활성화시키는 단계; 및
(c) 관심 단백질을 인코딩하는 서열을 포함하는 전이유전자를 포함하는 발현 벡터를 숙주세포 내로 도입함으로써, 재조합 단백질을 생산하는 단계를 포함하는 방법. - 제12항에 있어서, 관심 상기 단백질은 항원을 포함하는 방법.
- 제13항에 있어서, 상기 항원은 인플루엔자 항원을 포함하는 방법.
- Bak가 부분적으로 또는 완전히 비활성화되는 세포주에 있어서, 상기 세포주는,
(a) 제8항 내지 제11항 중 어느 하나의 항의 방법에 따라 세포에서 Bak를 비활성화시키는 단계; 및
(b) Bak가 부분적으로 또는 완전히 비활성화된 세포주를 산출하기 위한 조건 하에서 세포를 배양하는 단계에 의해 생산되는 세포주. - 제15항에 있어서, 상기 세포는 COS 세포, CHO 세포, VERO 세포, MDCK 세포, WI38 세포, V79 세포, B14AF28-G3 세포, BHK 세포, HaK 세포, NS0 세포, SP2/0-Ag14 세포, HeLa 세포, HEK293 세포, 및 perC6 세포로 이루어진 그룹으로부터 선택되는 포유류 세포인 세포주.
- 제15항에 있어서, 상기 세포주는 Bax에 결함이 있는 세포주.
- 제16항에 있어서, 상기 세포주는 Bax에 결함이 있는 세포주.
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AU2009258117A1 (en) | 2009-12-17 |
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KR20160113321A (ko) | 2016-09-28 |
CA2893175A1 (en) | 2009-12-17 |
KR20110026474A (ko) | 2011-03-15 |
EP2910568B1 (en) | 2018-08-22 |
IL224959A (en) | 2014-12-31 |
US20100003756A1 (en) | 2010-01-07 |
EP2294191B1 (en) | 2016-09-28 |
EP2910568A2 (en) | 2015-08-26 |
EP2910568A3 (en) | 2015-09-09 |
EP2294191A4 (en) | 2011-09-28 |
US8597912B2 (en) | 2013-12-03 |
WO2009151591A3 (en) | 2010-03-04 |
WO2009151591A2 (en) | 2009-12-17 |
CA2893175C (en) | 2016-09-06 |
CA2726768C (en) | 2016-09-06 |
AU2009258117B2 (en) | 2014-10-09 |
JP5763530B2 (ja) | 2015-08-12 |
CA2726768A1 (en) | 2009-12-17 |
JP2011522564A (ja) | 2011-08-04 |
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