KR102718353B1 - 재조합 바이러스 레플리콘 시스템 및 그의 용도 - Google Patents
재조합 바이러스 레플리콘 시스템 및 그의 용도 Download PDFInfo
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Abstract
Description
도 2는 비제한적이고 예시적인 기본 1가 VEEV 레플리콘 설계인 Rep-Alpha의 구조의 개략도를 도시하며, Rep-Alpha는 T7 프로모터 서열, 본 명세서에 기재된 바와 같은 U2→G 치환을 갖는 VEEV로부터의 5' UTR 서열, 알파바이러스 게놈의 비구조 폴리펩티드인 nsp1, nsp2, nsp3, 및 nsp4의 코딩 서열을 포함한다. 기본 1가 VEEV 레플리콘인 Rep-Alpha는 또한 26S 서브게놈 프로모터 서열, 3'UTR 서열, T7 종결 서열, 폴리아데닐화 서열인 PolyA, 및 레플리콘 내로의 추가 성분의 삽입을 용이하게 하도록 조작된 다수의 독특한 제한 부위를 함유한다.
도 3 및 도 4는 2개의 비제한적이고 예시적인 1가 VEEV 레플리콘 설계의 구조를 그래프로 도시한 것이며, 벡터 내로 작동 가능하게 포함된 관심 대상 유전자(GOI)는 각각 A Vietnam 1203 HA 유전자(도 3) 및 향상된 녹색 형광 단백질(eGFP) 리포터 유전자(도 4)였다.
도 5는 변형된 VEEV-HA 레플리콘에서 5' UTR의 위치 2에서의 U2→G 변형이 변형된 레플리콘의 생물학적 활성에 영향을 주지 않음을 나타내는 예시적인 실험의 결과를 그래프로 요약한 것이다. 인플루엔자 헤마글루티닌-HA 유전자를 발현하는 변형된 U2→G VEEV-HA 레플리콘으로 전기천공된 세포 상에서 유세포측정 분석(FACS)을 수행하였다(레플리콘의 구조 체계에 대해서는 도 3을 또한 참조함). 야생형 VEEV-HA 레플리콘, 즉, 위치 2에 U 잔기를 함유하는 VEEV-HA 레플리콘을 대조군으로서 사용하였다.
도 6은 5' UTR에서 U2→G 변형을 지닌 알파바이러스 레플리콘으로부터의 발현이 임의의 특정한 관심 대상 유전자(GOI)로 제한되지 않음을 입증하기 위해 수행된 예시적인 유세포측정 분석의 결과를 그래프로 요약한 것이다. 이 실험에서, 변형된 알파바이러스 레플리콘이 녹색 형광 단백질(GFP) 리포터 유전자를 발현시키도록 조작되었다(레플리콘의 구조 체계에 대해서는 도 4를 또한 참조함). 변형된 VEEV-GFP 레플리콘의 5' UTR에서의 U2→G 변형은 야생형 대조 레플리콘으로부터 검출된 발현에 비해 GFP 유전자의 발현을 3배 향상시키는 것으로 나타났다.
도 7은 변형된 VEEV 레플리콘으로부터의 레드 파이어플라이(red Firefly) 리포터 유전자의 발현을 평가하는 또 다른 예시적인 유세포측정 분석의 결과를 그래프로 요약한 것이다. 이 실험에서, 변형된 VEEV-rFF 레플리콘의 5' UTR에서의 U2→G 변형은 야생형 대조 레플리콘으로부터 검출된 발현에 비해 레드 파이어플라이 유전자의 발현을 2배 향상시키는 것으로 나타났다.
도 8은 비제한적이고 예시적인 알파바이러스 게놈 구조 및 게놈 발현을 개략적으로 도시한다(문헌[Strauss et al., Microbiological Reviews, pp. 491-562, September 1994]으로부터 조정이 이루어진 것임). SIN 바이러스의 게놈 체계가 나타나 있다. 비구조 유전자 및 구조 단백질 유전자의 명칭이 주어져 있다. 유전자 및 단백질의 명명법에 대한 언급은 상기 문헌[Strauss et al., 1994]에서 찾아볼 수 있다. 49S 게놈 RNA가 중심에 개략적으로 도시되어 있으며, 이때 그의 번역 ORF는 비어있는 박스로 나타난다. 작은 검은색 박스들은 보존된 서열 요소들이고; 비어있는 마름모는 누설(leaky) 오팔(opal) 종결 코돈을 표시한다. 비구조 폴리프로테인(polyprotein) 및 그의 처리 생성물은 위에 나타나 있다. 오팔 코돈에서의 종결은 P123을 생성하며, 복제에서 그의 주요 기능은 활성 RNA 레플리카제에서 폴리프로테인을 처리하기 위해 트랜스(trans)로 작용하는 프로테이나아제로서 존재하는 것으로 믿어지고; 이러한 프로테이나아제 도메인은 nsP2 영역에서 발견된다. 오팔 정지 코돈의 리드쓰루(readthrough)는 P1234를 생성하며, 이는 활성 레플리카제를 형성할 수 있다. 26S 서브게놈 mRNA가 아래에서 확대되어 구조 ORF 및 그의 번역 생성물을 나타낸다. 비리온에 존재하는 폴리펩티드는 음영 처리되어 있다. vcRNA는 게놈 RNA의 마이너스 가닥 상보체이다.
본 발명의 전술한 및 다른 특징은 첨부 도면과 함께 취해지는 하기의 설명 및 첨부된 청구범위로부터 더욱 충분히 명백해질 것이다. 이들 도면이 본 발명에 따른 몇몇 실시 형태만을 도시하는 것이고 본 발명의 범위를 한정하는 것으로 간주되지 않아야 함을 이해한다면; 본 발명은 첨부 도면의 사용을 통해 추가로 구체적으로 그리고 상세히 설명될 것이다.
Claims (45)
- 변형된 알파바이러스 레플리콘 RNA를 포함하는 핵산 분자로서, 상기 변형된 레플리콘 RNA는 변형된 5'-UTR을 포함하고 바이러스 구조 단백질을 인코딩하는 핵산 서열의 적어도 일부가 없고, 여기서 상기 변형된 5'-UTR은 위치 2에서 뉴클레오티드 치환이 있는 서열 번호 2 내지 서열 번호 18 중 적어도 하나에 상응하는 RNA 서열을 포함하고, 여기서 상기 변형된 5'-UTR의 위치 2에서의 뉴클레오티드 치환은 U→G 치환인 것인, 핵산 분자.
- 제1항에 있어서, 상기 변형된 레플리콘 RNA는 알파바이러스 구조 단백질에서 제공된 10개 이상의 연속 아미노산을 인코딩하는 서열이 없는 것인, 핵산 분자.
- 제1항에 있어서, 상기 변형된 알파바이러스 레플리콘 RNA는 바이러스 구조 단백질을 인코딩하는 핵산 서열을 포함하지 않는, 핵산 분자.
- 제1항에 있어서, 하나 이상의 발현 카세트를 추가로 포함하며, 상기 발현 카세트 각각은 이종성 핵산 서열에 작동 가능하게 연결된 프로모터를 포함하는, 핵산 분자.
- 제1항에 있어서, 상기 변형된 레플리콘 RNA는 VEEV/EEEV 군, 또는 SF 군, 또는 SIN 군에 속하는 알파바이러스의 것인, 핵산 분자.
- 제1항에 있어서, 상기 알파바이러스는 베네수엘라 말 뇌염 바이러스(VEEV)인, 핵산 분자.
- 제1항에 있어서, 상기 변형된 알파바이러스 레플리콘 RNA는 이종성 조절 요소에 작동 가능하게 연결되는, 핵산 분자.
- 제1항에 있어서, 상기 변형된 알파바이러스 레플리콘 RNA는 비구조 폴리펩티드 nsp1, nsp2, nsp3, 및 nsp4를 코딩하는 서열을 포함하는, 핵산 분자.
- 변형된 알파바이러스 레플리콘 RNA를 인코딩하는 서열을 포함하는 핵산 분자로서, 상기 핵산 분자는 서열 번호 1을 포함하고, 상기 변형된 알파바이러스 레플리콘 RNA는 바이러스 구조 단백질을 인코딩하는 서열의 적어도 일부가 없으며, 여기서 상기 변형된 레플리콘 RNA는 변형된 5'-UTR을 포함하고, 여기서 서열 번호 1은 상기 5'-UTR의 위치 2에서의 U→G 뉴클레오티드 치환을 포함하는 레플리콘을 인코딩하는 것인, 핵산 분자.
- 제9항에 있어서, 상기 변형된 알파바이러스 레플리콘 RNA는 알파바이러스 구조 단백질에서 제공된 10개 이상의 연속 아미노산을 인코딩하는 서열이 없는 것인, 핵산 분자.
- 제9항에 있어서, 상기 변형된 알파바이러스 레플리콘 RNA는 바이러스 구조 단백질을 인코딩하는 핵산 서열을 포함하지 않는, 핵산 분자.
- 제1항 내지 제11항 중 어느 한 항에 있어서, 상기 레플리콘은 관심 대상 폴리펩티드를 인코딩하는 발현 카세트를 포함하는, 핵산 분자.
- 제12항의 핵산 분자를 포함하는 재조합 세포로서, 여기서 상기 세포는 인체 내의 세포가 아닌 것인, 재조합 세포.
- 제13항에 있어서, 상기 재조합 세포는 원핵 세포 또는 진핵 세포인, 재조합 세포.
- 제13항에 있어서, 상기 재조합 세포는 동물 세포인, 재조합 세포.
- 관심 대상 폴리펩티드를 생성하는 방법으로서, 제12항의 핵산 분자를 포함하는 숙주 세포를 배양하는 단계를 포함하고, 여기서 상기 숙주세포가 인체 내에서의 세포가 아닌 것인, 방법.
- 인간이 아닌 대상체에서 관심 대상 폴리펩티드를 생성하는 방법으로서, 제12항의 핵산 분자를 상기 대상체에게 투여하는 단계를 포함하는 것인, 방법.
- 제17항에 있어서, 상기 대상체는 말, 피그(pig), 영장류, 마우스, 소, 돼지, 양, 토끼, 고양이, 개, 조류, 어류, 염소, 당나귀, 햄스터, 또는 버팔로인, 방법.
- 제16항에 있어서, 상기 변형된 레플리콘 RNA가 알파바이러스 구조 단백질에서 제공된 10 이상의 연속 아미노산을 인코딩하는 서열이 없는 것인, 방법.
- 제16항에 있어서, 상기 변형된 알파바이러스 레플리콘 RNA는 바이러스 구조 단백질을 인코딩하는 핵산 서열을 포함하지 않는 것인, 방법.
- 제16항에 있어서, 상기 레플리콘 RNA가 비구조 폴리펩티드 nsp1, nsp2, nsp3, 및 nsp4를 코딩하는 서열을 포함하는 것인, 방법.
- 제16항에 있어서, 하나 이상의 발현 카세트를 추가로 포함하며, 상기 발현 카세트 각각은 이종성 핵산 서열에 작동 가능하게 연결된 프로모터를 포함하는 것인, 방법.
- 제16항에 있어서, 상기 변형된 레플리콘 RNA는 VEEV/EEEV 군, 또는 SF 군, 또는 SIN 군에 속하는 알파바이러스의 것인, 방법.
- 제23항에 있어서, 상기 알파바이러스는 베네수엘라 말 뇌염 바이러스(VEEV)인, 방법.
- 제16항에 있어서, 상기 변형된 알파바이러스 레플리콘 RNA는 이종성 조절 요소에 작동 가능하게 연결되는 것인, 방법.
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| EP3526332B1 (en) | 2024-06-26 |
| EP3526332A1 (en) | 2019-08-21 |
| BR112019007433A2 (pt) | 2019-07-02 |
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