KR101754091B1 - 단일 뉴클레오티드 검출 방법 - Google Patents
단일 뉴클레오티드 검출 방법 Download PDFInfo
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- KR101754091B1 KR101754091B1 KR1020177001507A KR20177001507A KR101754091B1 KR 101754091 B1 KR101754091 B1 KR 101754091B1 KR 1020177001507 A KR1020177001507 A KR 1020177001507A KR 20177001507 A KR20177001507 A KR 20177001507A KR 101754091 B1 KR101754091 B1 KR 101754091B1
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- oligonucleotide
- region
- stranded
- nucleotide
- detectable elements
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- Dispersion Chemistry (AREA)
Abstract
본 실시예는 (1) 상기 핵산의 점진적인 피로인산분해에 의해 단일 뉴클레오시드 3인산 스트림을 생성하는 단계; (2) 중합효소 및 리가아제의 존재 하에 적어도 하나의 상기 단일 뉴클레오시드 3인산과 상응하는 프로브 시스템을 반응시킴으로써 적어도 하나의 실질적인 이중 가닥 올리고 뉴클레오티드 사용 프로브(used probe)를 생성하는 단계로, 상기 상응하는 프로브 시스템은, (a) 검출 불가능한 상태의 특이적 검출가능요소들로 표지된 단일가닥 제1 올리고뉴클레오티드 및 (b) 상기 제1 올리고뉴클레오티드 상의 상보적 영역에 혼성화할 수 있는 단일가닥 제2 및 제3 올리고뉴클레오티드를 포함하는 단계; (3) 이중가닥 엑소뉴클레오리틱(exonucleolytic) 활성을 갖는 효소로 상기 사용 프로브를 분해(digesting)하여, 검출 가능한 상태의 상기 검출가능요소들 및 적어도 부분적으로 상기 제1 올리고뉴클레오티드의 서열 보체인 단일가닥 제4 올리고뉴클레오티드를 생성하는 단계; (4) 상기 제4 올리고뉴클레오티드를 다른 제1 올리고뉴클레오티드와 반응시켜 상기 사용 프로브에 상응하는 실질적인 이중가닥 올리고뉴클레오티드 생성물을 생성하는 단계; (5) 상기 단계 (3) 및 (4)를 주기적으로 반복하여 수행하는 단계; 및 (6) 상기 단계 (3)의 매 반복마다 방출되는 상기 특이적 검출가능요소들을 검출하는 단계를 포함하는 것을 특징으로 한다. 바람직하게는, 검출가능요소들은 형광단이다. 본 발명의 방법은 종래 개시된 방법보다 단일 뉴클레오시드 3인산으로부터 더 강한 형광 신호를 생성한다. 또한, 바람직한 프로브 시스템 역시 개시한다.
Description
도 2는 본 발명의 실시예에 따른 미소유체 서열분석장치의 개략적인 구성도이다.
Claims (26)
- 핵산의 염기서열 분석방법에 있어서,
(1) 상기 핵산의 점진적인 피로인산분해에 의해 단일 뉴클레오시드 3인산 스트림을 생성하는 단계;
(2) 중합효소 및 리가아제의 존재 하에 적어도 하나의 상기 단일 뉴클레오시드 3인산과 상응하는 프로브 시스템을 반응시킴으로써 적어도 하나의 이중가닥-포함 올리고 뉴클레오티드 사용 프로브(used probe)를 생성하는 단계로, 상기 상응하는 프로브 시스템은, (a) 검출 불가능한 상태의 특이적 검출가능요소들로 표지된 단일가닥 제1 올리고뉴클레오티드 및 (b) 상기 제1 올리고뉴클레오티드 상의 상보적 영역에 혼성화할 수 있는 단일가닥 제2 및 제3 올리고뉴클레오티드를 포함하는 단계;
(3) 이중가닥 엑소뉴클레오리틱(exonucleolytic) 활성을 갖는 효소로 상기 사용 프로브를 분해(digesting)하여, 검출 가능한 상태의 상기 검출가능요소들 및 적어도 부분적으로 상기 제1 올리고뉴클레오티드의 서열 보체인 단일가닥 제4 올리고뉴클레오티드를 생성하는 단계;
(4) 상기 제4 올리고뉴클레오티드를 다른 제1 올리고뉴클레오티드와 반응시켜 상기 사용 프로브에 상응하는 이중가닥-포함 올리고뉴클레오티드 생성물을 생성하는 단계;
(5) 상기 단계 (3) 및 (4)를 주기적으로 반복하여 수행하는 단계; 및
(6) 상기 단계 (3)의 매 반복마다 방출되는 상기 특이적 검출가능요소들을 검출하는 단계를 포함하는 것을 특징으로 하는 방법. - 제1항에 있어서,
상기 제2 올리고뉴클레오티드의 5' 말단과 상기 제3 올리고뉴클레오티드의 3' 말단은 링커(linker) 영역에 의해 연결되는 것을 특징으로 하는 방법. - 제2항에 있어서,
상기 링커 영역은 올리고뉴클레오티드 영역을 포함하는 것을 특징으로 하는 방법. - 제2항 및 제3항 중 어느 한 항에 있어서,
상기 생성된 제4 올리고뉴클레오티드는 폐루프 형태인 것을 특징으로 하는 방법. - 제1항에 있어서,
상기 제1 올리고뉴클레오티드는 단일 뉴클레오티드 포획(capture) 영역을 포함하고, 상기 포획 영역은 포획될 상기 단일 뉴클레오시드 3인산에 상보적이며 상기 제2 및 제3 올리고뉴클레오티드에 상보적인 영역들에 인접해 있는 것을 특징으로 하는 방법. - 제5항에 있어서,
상기 검출가능요소들은 상기 제1 올리고뉴클레오티드의 5' 말단 및 상기 포획 영역 사이의 상기 제1 올리고 뉴클레오티드 상에 위치하는 것을 특징으로 하는 방법. - 제5항에 있어서,
상기 제2 올리고뉴클레오티드는,
(a) 상기 포획 영역의 3' 측상 인접영역에 혼성화되고,
(b) 상기 3' 측상 인접영역보다 긴 것을 특징으로 하는 방법. - 제1항에 있어서,
상기 제3 올리고뉴클레오티드의 3' 말단은 엑소뉴클레오리틱 분해(exonucleolytic degradation)에 저항성을 갖는 요소를 포함하는 것을 특징으로 하는 방법. - 제1항에 있어서,
상기 제1 올리고뉴클레오티드의 3'말단과 상기 제2 올리고뉴클레오티드의 대응 영역 사이에 적어도 하나의 뉴클레오티드 염기 불일치가 존재하는 것을 특징으로 하는 방법. - 제1항에 있어서,
상기 제1 올리고뉴클레오티드에 부착된 상기 검출가능요소들은 형광단들을 포함하는 것을 특징으로 하는 방법. - 제10항에 있어서,
상기 형광단들은 적어도 하나의 소광물질의 존재에 의해 상기 제1 올리고뉴클레오티드에서 검출 불가능하게 되는 것을 특징으로 하는 방법. - 제1항에 있어서,
상기 단계 (3)의 온도를 순환시켜, 상기 검출가능요소들이 방출된 후에 상기 제4 올리고뉴클레오티드에 부착된 임의의 잔여 올리고뉴클레오티드 단편들을 제거하고, 새로운 제2 및 제3 올리고뉴클레오티드가 어닐링(annealing)되게 하는 것을 특징으로 하는 방법. - 제1항에 있어서,
상기 프로브 시스템은 상이한 포획 영역 및 특징적인 검출가능요소들을 각각 제공받는 복수의 제1 올리고뉴클레오티드 유형들을 포함하는 것을 특징으로 하는 방법. - 제13항에 있어서,
최대 4개까지의 다양한 올리고뉴클레오티드 프로브 시스템 세트들이 사용되고,
각 세트의 상기 제1 올리고뉴클레오티드는, 자연발생 DNA 또는 RNA의 특징적인 뉴클레오티드 염기들 중 하나에 대해 선택적인 포획 영역 및 상이한 검출가능요소들을 갖는 것을 특징으로 하는 방법. - 제1항에 있어서,
상기 단계 (1)은 각각의 단일 뉴클레오시드 3인산을 상응하는 마이크로 드롭릿(microdroplet)에 함유하는 단계를 더 포함하고 상기 단계 (2) 및 (6)은 상기 각각의 마이크로 드롭릿 상에서 수행되는 것을 특징으로 하는 방법. - 제15항에 있어서,
상기 단계 (6)을 상기 각각의 마이크로 드롭릿에 적용함으로써 획득되는 결과물들이 상기 핵산의 염기서열의 데이터 특성 스트림으로 조합되는 것을 특징으로 하는 방법. - 다성분의 생물학적 프로브 시스템에 있어서,
(a) 검출 불가능한 상태의 하나 이상의 형광단으로 표지된 단일가닥 제1 올리고뉴클레오티드; 및
(b) 상기 제1 올리고뉴클레오티드 상에서 단일 뉴클레오티드 포획 영역의 각 측면에 병렬로 배치된 상보적인 3' 측 및 5' 측 인접영역들에 각각 혼합화할 수 있는 표지되지 않은 단일가닥 제2 및 제3 올리고뉴클레오티드를 포함하는 것을 특징으로 하는 시스템. - 제17항에 있어서,
상기 제2 올리고뉴클레오티드의 5' 말단과 상기 제3 올리고뉴클레오티드의 3' 말단은 링커(linker) 영역에 의해 연결되는 것을 특징으로 하는 생물학적 프로브 시스템. - 제18항에 있어서,
상기 링커 영역은 올리고뉴클레오티드 영역을 포함하는 것을 특징으로 하는 생물학적 프로브 시스템. - 제17항 내지 제19항 중 어느 한 항에 있어서,
상기 형광단들은 상기 제1 올리고뉴클레오티드의 5' 측 인접영역에 위치하는 것을 특징으로 하는 생물학적 프로브 시스템. - 제17항 내지 제19항 중 어느 한 항에 있어서,
상기 제1 올리고뉴클레오티드는 또한 하나 이상의 소광물질을 포함하는 것을 특징으로 하는 생물학적 프로브 시스템. - 제17항 내지 제19항 중 어느 한 항에 있어서,
상기 제2 올리고뉴클레오티드는 상기 제1 올리고뉴클레오티드의 3' 측 인접영역보다 긴 것을 특징으로 하는 생물학적 프로브 시스템. - 제17항 내지 제19항 중 어느 한 항에 있어서,
상기 제3 올리고뉴클레오티드는 3' 말단에 엑소뉴클레오리틱 분해(exonucleolytic degradation)에 저항성을 갖는 요소를 포함하는 것을 특징으로 하는 생물학적 프로브 시스템. - 제17항 내지 제19항 중 어느 한 항에 있어서,
상기 제1 올리고뉴클레오티드의 3' 말단의 뉴클레오티드는 상기 제2 올리고뉴클레오티드에서 상응하는 뉴클레오티드와 불일치하는 것을 특징으로 하는 생물학적 프로브 시스템. - 제17항 내지 제19항 중 어느 한 항에 있어서,
상기 포획 영역 및 사용된 상기 형광단들에 특징적인 뉴클레오티드 염기와는 다른 1 내지 4개의 상이한 제1 올리고뉴클레오티드 유형을 포함하는 것을 특징으로 하는 생물학적 프로브 시스템. - 제17항 및 제19항 중 어느 한 항에 있어서,
마이크로드롭릿(microdroplet)에 함유되는 것을 특징으로 하는 생물학적 프로브 시스템.
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US20180057872A1 (en) | 2018-03-01 |
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JP6433575B2 (ja) | 2018-12-05 |
AU2015293706A1 (en) | 2017-02-09 |
EP3013987A1 (en) | 2016-05-04 |
DK3150725T3 (en) | 2018-02-26 |
US10501795B2 (en) | 2019-12-10 |
CN106471133B (zh) | 2019-07-09 |
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