KR100967592B1 - 감소된 게놈을 갖는 박테리아 - Google Patents
감소된 게놈을 갖는 박테리아 Download PDFInfo
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Abstract
Description
Claims (70)
- 본래 부모 이콜라이(E. coli) 균주의 게놈보다 5% 이상 더 작도록 유전적으로 조작된 게놈을 갖는 이콜라이 박테리아로서, 플라젤라 유전자, 제한 변형(restriction modification) 시스템 유전자, 리포폴리사카리드 표면 유전자, 삽입 서열, rhs 요소, 독소 유전자, 병원성 유전자, 핌브리아(fimbrae) 유전자, 인바신(invasin) 유전자, 주변세포질(periplasmic) 단백질 유전자, 막단백질 유전자, 프로파지, 슈도유전자(pseudogene), K 아일랜드, 박테리오파지 수용체 유전자, 비전사 영역 및 본래 부모 균주와 동종 또는 연관된 종의 임의의 두 박테리아 균주 둘 다에 존재하지 않는 유전자 또는 임의의 기타 DNA 단편 중에서 선택된 1 이상의 DNA 단편이 박테리아의 게놈으로부터 결실되어 있는 것인 이콜라이 박테리아.
- 제1항에 있어서, 박테리아의 게놈은 본래 부모 균주의 게놈보다 8% 내지 20% 더 작은 것인 이콜라이 박테리아.
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- 제1항에 있어서, 4.27 Mb보다 더 작거나 또는 4.00 Mb보다 더 작은 게놈을 갖는 것인 이콜라이 박테리아.
- 제1항에 있어서, 본래 부모와 비교할 때 단백질 코딩 유전자의 9% 이상이 결핍되어 있는 것인 이콜라이 박테리아.
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- 제1항에 있어서, 주변세포질 내로 분비되거나 또는 주변세포질 내에서 가공되는 단백질을 코딩하는 1 이상의 유전자가 결실된 것인 이콜라이 박테리아.
- 제7항에 있어서, 상기 1 이상의 유전자가 fliY, yedO, nfnB, tauA, mppA, tynA, chiA, imC, fecB, ygiH, yagP, 또는 yhcA 중에서 선택되는 것인 이콜라이 박테리아.
- (i) 한쪽 말단에는, 결실되는 게놈 영역의 왼쪽 측면상의 서열과 동일한 서열 1로서, 결실되는 게놈 영역의 오른쪽 측면상의 서열과 동일한 서열 2가 따라오는 서열 1;(ii) 다른 말단에는, 결실되는 게놈 영역 내의 서열과 동일한 서열 3; 및(iii) 서열 2와 서열 3 사이에는 박테리아의 게놈에 존재하지 않는 서열-특이적 뉴클레아제 인식 부위를 포함하는 인공 DNA 분자를 제조하는 단계,서열 1과 서열 3 및 박테리아의 게놈 내의 서열들 사이에 상동성 재조합을 우세하게 일어나게 하는 조건하에서 상기 인공 DNA 분자를 박테리아 내로 도입하여 재조합 박테리아를 형성하는 단계;인식 부위를 인식하는 서열-특이적 뉴클레아제에 대한 발현 벡터를 상기 재조합 박테리아 중 1 이상으로 도입하는 단계;상기 박테리아 중 1 이상에서 서열-특이적 뉴클레아제를 발현시키는 단계; 및서열-특이적 뉴클레아제의 발현에서 생존하며 정확한 결실을 포함하는 박테리아를 수집하는 단계를 포함하는, 제1항의 이콜라이 박테리아를 제조하는 방법.
- 제9항에 있어서, 인공 DNA 분자를 운반하는 벡터에 의해 인공 DNA 분자를 박테리아 내로 도입하거나, 인공 DNA 분자를 박테리아 내로 직접 도입하는 것인 방법.
- 제9항에 있어서, 상동성 재조합을 증가시킬 수 있는 시스템에 대한 발현 벡터를 박테리아의 적어도 일부에 도입하는 단계를 더 포함하며, 상기 시스템에 대한 발현 벡터는 뉴클레아제에 대한 발현 벡터와 양립가능하고, 뉴클레아제의 발현은 유도성 프로모터의 조절하에 있는 것인 방법.
- 제9항 또는 제10항에 있어서, 서열-특이적 뉴클레아제가 I-SceI인 것인 방법.
- 제9항 또는 제10항에 있어서, 인공 DNA 분자가 서열 2와 서열 3 사이에 선별 마커 유전자를 더 포함하는 것인 방법.
- 제11항에 있어서, 인공 DNA 분자가 서열 2와 서열 3 사이에 선별 마커 유전자를 더 포함하는 것인 방법.
- 서열-특이적 뉴클레아제 인식 부위 및 2가지 DNA 서열을 포함하는 벡터를 제공하는 단계로서, 2가지 DNA 서열 중 하나는 한쪽에서 결실되는 게놈 영역의 측면 서열과 동일하며 다른 하나는 반대쪽 상의 게놈 영역의 측면 서열과 동일하고, 2가지 DNA 서열은 벡터상에서 서로 옆에 위치하며, 서열-특이적 뉴클레아제 인식 부위는 벡터상에서 2가지 DNA 서열의 바깥쪽에 위치하는 것인 단계;상기 벡터를 박테리아 내로 도입하여 1 이상의 벡터로 형질전환된 박테리아를 형성하는 단계;인식 부위를 인식하는 서열-특이적 뉴클레아제에 대한 발현 벡터를 상기 벡터로 형질전환된 박테리아 중 1 이상으로 도입하여, 1 이상의 뉴클레아제로 형질전환된 박테리아를 형성하는 단계;상동성 재조합의 빈도를 증가시킬 수 있는 시스템을 상기 뉴클레아제로 형질전환된 박테리아 중 1 이상으로 도입하고, 서열-특이적 뉴클레아제를 발현시키는 단계; 및결실하고자 하는 게놈 영역이 결실된 1 이상의 박테리아를 확인하는 단계를 포함하는, 제1항의 박테리아를 제조하는 방법.
- 제13항에 있어서, 상동성 재조합의 빈도를 증가시킬 수 있는 시스템이 파지 λ Red 재조합효소 시스템인 것인 방법.
- 제14항 또는 제15항에 있어서, 상동성 재조합의 빈도를 증가시킬 수 있는 시스템이 파지 λ Red 재조합효소 시스템인 것인 방법.
- 발현 제어 서열에 작동적으로 연결된 시그날 서열을 갖는 단백질을 코딩하는 DNA를 포함하는 벡터를 제1항, 제2항, 제4항, 제5항, 제7항 또는 제8항 중 어느 한 항의 박테리아 내로 도입하는 단계; 및DNA에 의해 코딩되는 단백질을 발현시키기에 적당한 영양 조건 하에서 박테리아를 성장시키는 단계를 포함하는, 박테리아 내에서 재조합 단백질을 발현시키는 방법.
- 제18항에 있어서, 발현 제어 서열이 구조적으로(constitutively) 발현되거나 발현 제어 서열이 유도성 프로모터인 것인 방법.
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Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US10/057,582 | 2002-01-23 | ||
US10/057,582 US6989265B2 (en) | 2002-01-23 | 2002-01-23 | Bacteria with reduced genome |
PCT/US2003/001800 WO2003070880A2 (en) | 2002-01-23 | 2003-01-22 | Bacteria with reduced genome |
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