KR20180110094A - 샘플 사이클 다중화 및 실시간 이미지화 방법 - Google Patents
샘플 사이클 다중화 및 실시간 이미지화 방법 Download PDFInfo
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Abstract
Description
도 2는 상기 방법(2A)의 이미지화 사이클에서 사용된 시약 순서를 도시하며, 각각의 주요 유동 단계 사이에서 선택적인 세정 완충액을 생략하고 주입된 시약의 순서 및 상기 순서를, 다른 시약(2B)으로 n회 반복하는 것을 나타내는 표지 탐침으로서 샘플 상에 다양한 표적 성분(T1, T2, Tn)을 표적화하는 항체를 사용한 복수-샘플 표지 및 주입된 이미지화 공정의 흐름도이다.
도 3은 본 발명에 따른 방법에서 사용된 샘플의 실시예 2에 기재된 것과 같은 40배 배율의 공초점 형광 현미경에 의해 얻은 이미지이다. A: PBS가 본 발명의 다중화 프로토콜에 따른 이미지화 완충액으로서 사용되고 항원 및 항체 사이의 교차결합이 발생하는 곳; B: 라디칼 제거제(10mM 트롤록스(Trolox))가 보충된 PBS로 구성된 이미지화 완충액이 본 발명의 다중화 프로토콜에 따른 이미지화 완충액으로서 사용되고 항원 및 항체 사이의 교차결합을 방지하는 곳.
도 4는 단일 유방암 조직 절편 상의 다양한 바이오마커의 다중화 동일지역(colocalized) 염색 실시예 3에서 얻은 연속적 이미지를 나타낸다. 상기 A 내지 G의 이미지 순서는 프로토콜에 표시된 획득 순서에 해당한다.
시약 | 유동 지속시간 (초) | 배양 시간 (초) | 단계 시간(초) | |
사
이 클 (n) |
용출 완충액 | 12 | 60 | 72 |
세정 완충액 | 20 | - | 20 | |
차단 완충액 | 12 | 60 | 72 | |
세정 완충액 | 20 | - | 20 | |
1차 항체 (n) | 12 | 120 | 132 | |
세정 완충액 | 20 | - | 20 | |
2차 항체 (n) | 12 | 120 | 132 | |
세정 완충액 | 20 | - | 20 | |
이미지화 완충액 | 20 | - | 20 | |
합계 | 148 | 360 | 508 |
단계 | 시약 | 유동지속시간 (s) |
배양시간
(s) |
단계시간 (s) | |
샘플제조 | 탈왁싱 | 히스토클리어™ | - | - | 600 |
재수화 | 100%에서 0% 까지의 에탄올 | - | - | 120 | |
항원 회수 | pH 9 트리스/EDTA | - | - | 2400 | |
단계 | 시약 | 유동지속시간 (s) | 배양시간 (s) | 단계시간 (s) | |
다중화 (n=4) |
사이클 1 | ||||
샘플 표지 단계 1 | 1차 항체 (1) 마우스 항-ER, dil 1/50 |
10 | 240 | 250 | |
세정 완충액: PBS | 10 | - | 10 | ||
2차 항체 (1) Alexa Fluor 546 염소 항-마우스 IgG, dil. 1/40 |
10 | 240 | 250 | ||
세정 완충액: PBS | 10 | - | 10 | ||
이미지화 단계 1 | 반대염색 SlowFade Gold + DAPI |
- | - | 0 | |
사이클 2 | |||||
용출 단계 S1'
|
용출 완충액 EB+SDS 0.5% |
10 | 240 | 250 | |
세정 완충액: PBS | 10 | - | 10 | ||
샘플 표지 단계 2 | 1차 항체 (2) 마우스 항-CK, dil 1/100 |
10 | 120 | 130 | |
세정 완충액 : PBS | 10 | - | 10 | ||
2차 항체 (2) Alexa Fluor 647 염소 항-마우스 IgG, dil. 1/40 |
10 | 120 | 130 | ||
세정 완충액: PBS | 10 | - | 10 | ||
이미지화 단계 2 | = 이미지화 단계 1과 동일 | ||||
사이클 3 | |||||
용출 단계 S1'' | = S1'과 동일 | ||||
샘플 표지 단계 3 | 1차 항체 (3) 마우스 항-PR, dil 1/100 |
10 | 240 | 250 | |
세정 완충액: PBS | 10 | - | 10 | ||
2차 항체 (3) Alexa Fluor 647 염소 항-마우스 IgG, dil. 1/40 |
10 | 240 | 250 | ||
세정 완충액: PBS | 10 | - | 10 | ||
이미지화 단계 3 | = 이미지화 단계 2와 동일 | ||||
사이클 4 | |||||
용출 단계 S1''' | = S1'과 동일 | ||||
샘플 표지 단계 4 | 1차 항체 (4) 토끼 항-HER2, dil 1/250 |
10 | 120 | 130 | |
세정 완충액: PBS | 10 | - | 10 | ||
2차 항체 (4) Alexa Fluor 594 염소 항-마우스 IgG, dil. 1/40 |
10 | 120 | 130 | ||
세정 완충액: PBS | 10 | - | 10 | ||
이미지화 단계 4 | = 이미지화 단계 1과 동일 | ||||
최종 다중화
|
220 | 2160 | 2380 |
Claims (18)
- 하기의 단계를 포함하는 사이클 다중화에 의한 샘플의 실시간(in situ) 이미지화 방법:
(i) 샘플 지지체 상에 고정된 샘플을 제공하는 단계;
(ii) 미세유체 챔버, 균일한 방식으로 상기 미세유체 챔버 내부에 유체 물질 및 시약의 이류 수송을 위해 미세유체 챔버를 통해 압력 하에 유체 공급 시스템으로부터 공급된 유체를 전달하기 위해 구성되는 상기 미세유체 챔버의 일 말단의 하나 이상의 유체 투입구 및 상기 미세유체 챔버의 다른 말단의 하나 이상의 유체 배출구를 포함하되,
여기서 상기 미세유체 챔버의 하나 이상의 벽은 상기 샘플 지지체에 의해 형성되고 상기 미세유체 챔버의 부피는 약 2.5 내지 200㎕인 미세유체 장치를 제공하는 단계;
(iii) 샘플이 미세유체 챔버의 내부를 향하도록 상기 미세유체 챔버 상에 상기 샘플 지지체를 장착하는 단계;
(iv) 약 1 ㎕/s 내지 약 100 ㎕/s의 범위의 유속으로 유체 투입구를 통해 미세유체 챔버 내에 하나 이상의 이미지화 탐침을 포함하는, 복수개의 시약을 순서대로 주입하는 단계;
(v) 상기 하나 이상의 이미지화 탐침과 반응한 샘플의 성분에 의해 방출되는 신호를 이미지화 하는 단계;
(vi) 상이한 이미지화 탐침으로 (iv) 및 (v) 단계를 반복하는 단계;
여기서 상기 복수개의 시약을 순서대로 주입하는 단계는
- 샘플 상에 잠재적으로 잔류하는 바람직하지 않은 물질을 제거하기 위해 용출 완충액을 주입하는 용출 단계;
- 차단 완충액을 주입하는 비특이적 결합 차단 단계;
- 이미지화 탐침을 주입하는 샘플 표지 단계; 및
- 이미지화 완충액을 주입하는 선택적인 사전-이미지화 단계를 포함하고 이러한 각각의 단계는 세정 완충액을 주입하는 선택적인 세정 단계에 의해 선행 및/또는 후속될 수 있는 것이고,
여기서 상기 하나 이상의 이미지화 탐침은 표지 탐침 및 색원체 또는 형광 검출 분자로서, 상기 샘플 내에 분석될 분자체들을 표적으로 하는 일련의 특이적 항체를 주입하여 초래됨. - 제1항에 있어서, 주입되는 복수개의 시약 순서의 각 단계는 각각의 시약에 대해 2개의 유속 단계를 포함하는 방법:
- 시약이 약 1 ㎕/s 내지 약 100 ㎕/s 범위의 초기 유속으로 주입되는 제1 유속 단계;
- 순서 내 다음 시약을 주입하기 전에, 동일한 시약을 더 낮은 흐름(통상적으로, 약 0.001 내지 약 1.0 ㎕/s)으로 주입하여 샘플과 상기 시약을 배양하도록 보장하는 제2 유속 단계. - 제2항에 있어서, 상기 제1 유속 단계는 약 1초에서 약 120초까지 지속되는 것인 방법.
- 제2항 또는 제3항에 있어서, 상기 제2 유속 단계는 약 1분에서 약 30분까지 지속되는 것인 방법.
- 제1항 내지 제4항 중 어느 한 항에 있어서, 상기 샘플 표지 단계는 1차 항체가 주입되는 제1 단계(S3'), 세정 완충액이 주입되는 세정 단계(S3'') 및 제2 항체가 주입되는 추가 단계(S3''')를 포함하는 방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 상기 복수개의 시약을 순서대로 주입하는 단계는 하기를 포함하는 방법:
- 세정 완충액이 주입되는 세정 단계(S0);
- 차단 완충액이 주입되는 비특이적 결합 차단 단계(S2);
- 이미지화 탐침이 주입되는 샘플 표지 단계(S3);
- 세정 완충액이 주입되는 세정 단계(S3a);
- 이미지화 완충액이 주입되는 선택적 사전-이미지화 단계(S4)
여기서 상기 샘플 표지 단계는 1차 항체가 주입되는 제1 단계(S3'), 세정 완충액이 주입되는 세정 단계(S3'') 및 제2 항체가 주입되는 추가 단계(S3''')를 포함함. - 제1항 내지 제4항 중 어느 한 항에 있어서, 상기 샘플 표지 단계는 샘플 내 표지된 RNA 또는 DNA 탐침과 같은 일부 DNA/RNA 물질과 함께 실시간 혼성화를 위해 하나 이상의 표지된 탐침을 주입하는 단계를 포함하는 것인 방법.
- 제7항에 있어서, 상기 샘플 표지 단계는 상기 샘플 내 DNA/RNA 물질을 RNA 또는 DNA 탐침과 혼성화하기 위해 미세유체 챔버 내에 온도 사이클을 적용하는 단계를 더 포함하는 것인 방법.
- 제1항 내지 제8항 중 어느 한 항에 있어서, 상기 이미지화 단계 (v)는 형광 현미경 또는 명시야 현미경에 의해 수행되는 것인 방법.
- 제1항 내지 제9항 중 어느 한 항에 있어서, 상기 방법은 (iv) 내지 (v) 단계를 약 2 내지 80 사이클 포함하는 것인 방법.
- 제7항에 있어서, (vi) 단계 하의 용출 단계는 다른 샘플 표지 단계의 방법을 반복하기 전에 샘플 상에 잠재적으로 잔류하는 바람직하지 않은 실시간 혼성화 탐침 또는 마커의 제거를 보장하기 위해 온도 사이클을 적용하면서 수행되는 것인 방법.
- 하나 이상의 항산화제 및/또는 라디칼 제거제가 약 1mM 내지 약 1,000mM 사이로 포함되는 농도로 존재하는, 하나 이상의 항산화제 및/또는 라디칼 제거제를 포함하는 이미지화 완충액.
- 제10항에 있어서, 상기 항산화제 및/또는 라디칼 제거제는 아스코르브산, 6-하이드록시-2,5,7,8-테트라메틸크로만-2-카르복실산(트롤록스), 사이클로옥타테트라엔, 리포익산 및 4-니트로벤질 알콜 중에서 선택되는 것인 이미지화 완충액.
- 약 100mM의 아스코르브산을 포함하는 제12항 또는 제13항에 따른 이미지화 완충액.
- 제1항 내지 제11항 중 어느 한 항에 있어서, 상기 이미지화 완충액은 제12항 내지 제14항 중 어느 한 항에 따른 이미지화 완충액인 방법.
- 약 1mM 내지 약 1‘000mM 사이로 포함되는 농도로 하나 이상의 항산화제 및/또는 라디칼 제거제를 포함하는, 이미지화 탐침에 의해 방출된 신호를 이미지화하기 위한 이미지화 완충액으로서의 용액의 용도.
- 제16항에 있어서, 상기 항산화제 및/또는 라디칼 제거제는 아스코르브산, 6-하이드록시-2,5,7,8-테트라메틸크로만-2-카르복실산(트롤록스), 사이클로옥타테트라엔, 리포익산 및 4-니트로벤질 알콜에서 선택되는 것인 용액의 용도.
- 제16항 또는 제17항에 있어서, 약 100mM의 아스코르브산을 포함하는 용액의 용도.
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EP3414570B1 (en) | 2020-04-01 |
AU2017217609B2 (en) | 2023-03-09 |
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JP7033081B2 (ja) | 2022-03-09 |
ES2799705T3 (es) | 2020-12-21 |
US10634671B2 (en) | 2020-04-28 |
WO2017137402A1 (en) | 2017-08-17 |
CN108603879B (zh) | 2021-06-22 |
KR102684849B1 (ko) | 2024-07-12 |
CA3051932A1 (en) | 2017-08-17 |
CN108603879A (zh) | 2018-09-28 |
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US20190346437A1 (en) | 2019-11-14 |
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