KR20100038429A - 상이한 표적 유전자들을 간섭하는 선형 이중가닥 rna 분자 - Google Patents
상이한 표적 유전자들을 간섭하는 선형 이중가닥 rna 분자 Download PDFInfo
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- KR20100038429A KR20100038429A KR1020107002576A KR20107002576A KR20100038429A KR 20100038429 A KR20100038429 A KR 20100038429A KR 1020107002576 A KR1020107002576 A KR 1020107002576A KR 20107002576 A KR20107002576 A KR 20107002576A KR 20100038429 A KR20100038429 A KR 20100038429A
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Abstract
Description
도 2a 내지 도 2c는 연속적으로 정렬된 두 개의 siRNA 구성요소를 갖는 liRNA의 RNAi 활성을 나타낸 것이다. 도 2a는 EGFP 및 RLuc 모두를 표적으로 하는 다른 길이의 liER RNA의 서열(서열번호 17 내지 22)을 나타낸다. 이들의 센스 가닥은 H1 프로모터로부터 전사된다. 회색 박스는 긴 간섭 RNA 내의 안티센스 서열의 위치를 나타낸다. 또한, 하기의 노던 블롯팅을 위한 siE 및 siR 프로브의 프로브 서열이 나타나 있다. 도 2b는 이중 루시퍼라아제 분석에 의해 측정된 liRNA의 다중 유전자 넉다운(knockdown) 활성을 나타낸다. 대조구 liRNA인 liC를 암호화하는 플라스미드에 의한 루시퍼라아제 발현량을 100으로 정하였다. 분석은 세 번 반복하여 수행하였다. 도 2c는 Huh 7 세포에서 보다 긴 RNA 기질로부터 siRNA 가공의 효율 및 정확성을 보여주는 노던 블롯 분석을 나타낸다. 21-23 nt siRNA로 가공된 생성물들을 화살표로 표시하였다. U6 핵내 소분자 RNA(small nuclear RNA)를 위한 프로브 서열을 로딩 대조구로서 혼성화하였다.
도 3a 내지 도 3c는 수렴적으로 정렬된 두 개의 siRNA 구성요소를 갖는 liRNA의 RNAi 활성을 나타낸 것이다. 도 3a는 EGFP 및 RLuc 모두를 표적으로 하는 다른 길이의 liER RNA의 서열(서열번호 23 내지 28)을 나타낸다. EGFP 및 RLuc siRNA의 센스 가닥은 각각 H1 및 U6 프로모터로부터 전사된다. 회색 박스는 긴 간섭 RNA 내의 안티센스 서열의 위치를 나타낸다. 또한 하기의 노던 블롯팅을 위한 siE 및 siR 프로브의 프로브 서열이 나타나 있다. 도 3b는 이중 루시퍼라아제 분석에 의해 측정된 liRNA의 다중 유전자 넉다운(knockdown) 활성을 나타낸다. 대조구 liRNA인 liC를 암호화하는 플라스미드에 의한 루시퍼라아제 발현량을 100으로 정하였다. 분석은 세 번 반복하여 수행하였다. 도 3c는 Huh 7 세포에서 보다 긴 RNA 기질로부터 siRNA 가공의 효율 및 정확성을 보여주는 노던 블롯 분석을 나타낸다. 21-23 nt siRNA로 가공된 생성물을 화살표로 표시하였다. U6 핵내 소분자 RNA를 위한 프로브 서열을 로딩 대조구로서 혼성화하였다.
도 4a 내지 도 4c는 HCV 레플리콘(replicon) 세포인 FK-R2AN에서의 liRNA의 항바이러스 활성을 나타낸 것이다. 도 4a는 HCV 코어 및 NS3을 표적으로 하는 다양한 길이의 siRNA의 서열(서열번호 29 내지 32) 및 liRNA의 서열(서열번호 33 내지 40)을 나타낸다. 회색 박스는 긴 간섭 RNA 내의 안티센스 서열의 위치를 나타낸다. 도 4b는 레닐라 루시퍼라아제 분석에 의해 측정된 HCV RNA 복제 효율을 나타낸다. 대조구 liRNA인 liC를 암호화하는 플라스미드에 의한 루시퍼라아제 발현량을 100으로 정하였다. 분석은 세 번 반복하여 수행하였다. 도 4c는 상이한 siRNA- 또는 liRNA-발현 벡터로 형질감염된 레플리콘 세포에서의 HCV 코어 발현을 검출하기 위한 웨스턴 블롯 분석의 결과를 나타낸다. β-액틴을 내부 로딩 대조구로 사용하였다.
도 5a 내지 5c는 liRNA에 의한 HCV 레플리콘 RNA 내의 절단 부위를 결정하기 위한 RACE(Rapid amplification of cDNA ends)를 나타낸 것이다. 도 5a는 liRNA 절단 부위의 5' 말단을 결정하는 RACE 실험을 도식화하여 나타낸 것이다. siHCV-U 및 siHCV-N의 화살표는 레플리콘 RNA 게놈에서의 이들의 표적 부위를 나타낸다. 도 5b는 RACE 생성물을 무작위 올리고머로 역전사(reverse transcription) 후 5' UTR (위) 및 NS3(중간) 특이적 프라이머로 PCR 증폭한 결과를 나타낸다. β-액틴 유전자의 증폭을 내부 대조구로 사용하였다. 도 5c는 RACE로부터의 RT-PCR 생성물의 서열 분석 결과를 나타낸다. 회색 막대는 5' 말단에서 RNA 어댑터(adaptor)에 연결된 바이러스 RNA 서열의 cDNA를 나타낸다. 점선 화살표 및 진한 화살표는 각각 siRNA(siHCV-U 및 siHCV-N) 또는 liRNA(liHCV-UN)에 의해 절단된 HCV 표적 서열(서열번호 41 및 42) 내 예측 부위 및 실제 부위를 나타낸다.
도 6은 세포에서 liRNA에 대한 비특이적 인터페론 반응을 확인하기 위한, siRNA 또는 liRNA를 발현하는 표시된 플라스미드로 형질전환된 FK/R2AN 세포에서의 IFN-β, OAS1 및 MxA의 반-정량적 RT-PCR의 결과를 나타낸 것이다. Poly(I:C)를 양성 대조구로 사용하였다. β-액틴을 내부 로딩 대조구로 사용하였다.
Claims (22)
- 상이한 표적 유전자들의 발현을 각각 억제하는, 연속적으로 또는 수렴적으로 연결된 2 내지 10개의 짧은 간섭 RNA(siRNA)를 포함하는 선형 이중가닥 RNA 분자.
- 제1항에 있어서,
상기 siRNA 각각이 18 내지 24개의 뉴클레오티드를 포함하는 것을 특징으로 하는, 선형 이중가닥 RNA 분자.
- 제1항에 있어서,
상기 siRNA 각각이 21개의 뉴클레오티드를 포함하는 것을 특징으로 하는, 선형 이중가닥 RNA 분자.
- 제1항에 있어서,
두 개의 연속적이거나 수렴적인 siRNA로 이루어지며, 상기 RNA 분자의 한 가닥의 40개의 뉴클레오티드가 다른 가닥의 상보적인 40개의 뉴클레오티드와 염기쌍을 이루고, 각 가닥은 염기쌍을 이루지 않은 2개의 3' 말단 뉴클레오티드를 포함하는 것을 특징으로 하는, 선형 이중가닥 RNA 분자.
- 제1항에 있어서,
상기 표적 유전자가 바이러스 유전자인 것을 특징으로 하는, 선형 이중가닥 RNA 분자.
- 제1항의 선형 이중가닥 RNA 분자를 발현하는 이중가닥 DNA 서열을 포함하는 재조합 발현 벡터.
- 제6항에 있어서,
이중가닥 DNA의 양 말단에 작동가능하게 연결된 두 개의 수렴성 프로모터를 포함하며, 각 프로모터는 상기 이중가닥 DNA 서열의 각 가닥의 전사가 일어나게 하는 것을 특징으로 하는, 재조합 발현 벡터.
- 제6항에 있어서,
상기 프로모터가 인간 RNA 폴리머라아제 III 프로모터이며, 상기 프로모터 각각이 상기 이중가닥 DNA의 각각의 5' 말단과 인접하는 것을 특징으로 하는, 재조합 발현 벡터.
- 제8항에 있어서,
상기 인간 RNA 폴리머라아제 III 프로모터가 인간 H1, U6, 5S rRNA, 7SK 및 tRNA 프로모터로 이루어지는 군으로부터 선택되는 것을 특징으로 하는, 재조합 발현 벡터.
- 제6항에 있어서,
상기 선형 이중가닥 RNA 분자 내에 함유된 siRNA 각각이 18 내지 24개의 뉴클레오티드를 포함하는 것을 특징으로 하는, 재조합 발현 벡터.
- 제6항에 있어서,
상기 선형 이중가닥 RNA 분자 내에 함유된 siRNA 각각이 21개의 뉴클레오티드를 포함하는 것을 특징으로 하는, 재조합 발현 벡터.
- 제6항에 있어서,
상기 선형 이중가닥 RNA 분자가 두 개의 연속적 또는 수렴적 siRNA로 이루어지며, 한 가닥의 40개의 뉴클레오티드가 다른 가닥의 상보적인 40개의 뉴클레오티드와 염기쌍을 이루며, RNA 분자의 각 가닥이 염기쌍을 이루지 않은 2개의 3' 말단 뉴클레오티드를 포함하는 것을 특징으로 하는, 재조합 발현 벡터.
- 제1항의 선형 이중가닥 RNA 분자 또는 제6항의 재조합 발현 벡터를 포함하는 조성물.
- 제1항의 선형 이중가닥 RNA 분자 또는 제6항의 재조합 발현 벡터를 세포 내로 도입하는 단계를 포함하며, 여기서 코드화된 siRNA는 상이한 유전자를 표적으로 하여 표적 유전자의 발현을 억제하는 것을 특징으로 하는, 세포 내 표적 유전자의 발현을 감소시키는 방법.
- 제14항에 있어서,
상기 세포가 진핵 세포인 것을 특징으로 하는 방법.
- 제14항에 있어서,
상기 세포가 생체외 세포인 것을 특징으로 하는 방법.
- 제14항에 있어서,
상기 표적 유전자가 내재(endogenous) 유전자인 것을 특징으로 하는 방법.
- 제14항에 있어서,
상기 표적 유전자가 외재(exogenous) 유전자인 것을 특징으로 하는 방법.
- 제18항에 있어서,
상기 표적 유전자가 세포 내 병원균의 유전자인 것을 특징으로 하는 방법.
- 제19항에 있어서,
상기 표적 유전자가 바이러스 유전자인 것을 특징으로 하는 방법.
- 제20항에 있어서,
상기 바이러스 유전자가 C형 간염 바이러스(HCV) 유전자인 것을 특징으로 하는 방법.
- 제21항에 있어서,
선형 이중가닥 RNA 분자가 서열번호 37과 38 또는 서열번호 39와 40의 뉴클레오티드 서열 세트로 구성되는 것을 특징으로 하는 방법.
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