KR101984702B1 - 핵산, 라만 활성 분자 및 금속 입자를 포함하는 핵산 구조체 복합체를 이용하여 표적 물질을 검출하는 방법 - Google Patents
핵산, 라만 활성 분자 및 금속 입자를 포함하는 핵산 구조체 복합체를 이용하여 표적 물질을 검출하는 방법 Download PDFInfo
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- KR101984702B1 KR101984702B1 KR1020120135563A KR20120135563A KR101984702B1 KR 101984702 B1 KR101984702 B1 KR 101984702B1 KR 1020120135563 A KR1020120135563 A KR 1020120135563A KR 20120135563 A KR20120135563 A KR 20120135563A KR 101984702 B1 KR101984702 B1 KR 101984702B1
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Abstract
Description
도 2는 일 구체예에 따른 라만 활성 분자를 포함하는 DNA 구조체의 모식도를 나타낸 도면이다.
도 3은 일 구체예에 따른 핵산 구조체 복합체의 모식도를 나타낸 도면이다.
도 4는 일 구체예에 따른 여러 종류의 라만 활성 분자를 도입하여 SERS 측정할 수 있음을 나타낸 도면이다.
도 5는 일 구체예에 따른 핵산 구조체 복합체의 금속입자를 환원시켜 금속입자를 은으로 코팅하는 방법을 나타낸 도면이다.
도 6은 일 구체예에 따른 관능기를 포함하는 핵산 구조체 복합체를 제조하는 단계를 나타낸 도면이다.
도 7은 일 구체예에 따른 관능기를 포함하는 핵산 구조체 복합체와 표적 물질에 결합하는 제1 물질의 결합을 나타낸 도면이다.
도 8은 일 구체예에 따른 핵산 구조체 복합체와 표적 물질과의 결합을 나타낸 도면이다.
도 9는 일 구체예에 따른 지지체에 고정된 표적 물질과 핵산 구조체 복합체의 결합을 나타낸 도면이다.
도 10은 일 구체예에 따른 표적 핵산과 상보적인 서열을 포함하는 올리고뉴클레오티드를 포함하는 핵산 구조체 복합체를 제조하는 단계를 나타낸 도면이다.
도 11은 일 구체예에 따른 표적 핵산과 상보적인 서열을 포함하는 올리고뉴클레오티드를 포함하는 핵산 구조체 복합체와 표적 핵산의 결합을 나타낸 도면이다.
도 12는 일 구체예에 따른 지지체에 고정된 표적 핵산과 핵산 구조체 복합체의 결합을 나타낸 도면이다.
도 13은 합성된 핵산 구조체를 겔을 이용하여 확인한 결과를 나타내는 도면이다.
도 14 및 15는 핵산 구조체 복합체를 STEM으로 확인한 결과를 나타낸 도면이다.
도 16 및 17은 시료, 대조군을 이용하여 측정한 SERS 스펙트럼 결과를 나타낸 도면이다.
서열 번호 1 |
Disulfide-TCCCATGTGTCTCGTCGTAAATTATATCATTCGGACGTTCCAGCTTCCCTGTTAAGTTCTAC |
서열 번호 2 |
Disulfide-TTACGACGAGACACATGGGAACCGAACAATGTCGGAACGGCAGGCCAATGCTCACGGCGGAG |
서열 번호 3 |
Disulfide-GGAACGTCCGAATGATATAAACTCCGCCGTGAGCATTGGCCATGAAACTCCCAGCGAGCAGC |
서열 번호 4 |
GCCGTTCCGACATTGTTCGGAGTAGAACTTA/iCy3/ACAGGGAAGCAGCTGCTCGCTGGGAGTTTCA |
레인 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
첨가된 DNA 서열 번호 | 1 | 2 | 3 | 4 | 1 및 2 | 1, 2 및 3 | 1, 2, 3 및 4 |
1 mM AgNO3 | 최대파장(nm) |
0 ul | 525 |
3 ul | 509 |
5 ul | 506 |
7 ul | 495 |
Claims (20)
- 하나 이상의 이중가닥 혼성화 영역에서 서로 혼성화되고 6개 이상의 변(edge) 및 4개 이상의 꼭지점(vertex)을 포함하는 다면체의 형태를 이루는 복수의 핵산;
둘 이상의 금속 입자로서, 상기 다면체의 다른 꼭지점에 각각 부착된 금속 입자; 및
상기 금속 입자들이 부착된 꼭지점 사이에 위치한 상기 다면체의 변에 부착된 라만 활성 분자를 포함하고,
상기 다면체의 변의 어느 하나 이상의 부분은 핵산의 이중가닥 영역인 핵산 구조체 복합체. - 청구항 1에 있어서, 상기 핵산 구조체 복합체는 표적 물질에 특이적으로 결합하는 제1 물질을 더 포함하는 것인 핵산 구조체 복합체.
- 청구항 1에 있어서, 상기 다면체는 사면체(tetrahedron), 팔면체(octahedron), 12면체(dodecahedron), 삼각 쌍뿔(trigonal bipyramid), 또는 쌍뿔인 것인 핵산 구조체 복합체.
- 청구항 1에 있어서, 상기 핵산 구조체 복합체는 링커 화합물을 포함하는 것인 핵산 구조체 복합체.
- 청구항 1에 있어서, 상기 금속 입자는 링커 화합물에 의해 상기 다면체에 연결된 것인 핵산 구조체 복합체.
- 청구항 1에 있어서, 상기 금속 입자는 Au, Ag, Cu, Na, Al, Cr, Pt, Ru, Pd, Fe, Co, Ni 및 이들의 조합으로 구성되는 군으로부터 선택되는 것인 핵산 구조체 복합체.
- 청구항 2에 있어서, 표적 물질에 결합하는 제1 물질은 단백질, 항체, 또는 표적 핵산과 상보적인 서열을 포함하는 올리고뉴클레오티드인 것인 핵산 구조체 복합체.
- 청구항 1에 있어서, 상기 금속 입자는 화학적으로 환원될 수 있거나 레이저 삭마(laser ablation)를 거친 것인 핵산 구조체 복합체.
- 청구항 1에 있어서, 상기 라만 활성 분자는 시아닌, 플루오레세인, 로다민 (rhodamine), 7-니트로벤젠-2-옥사-1,3-디아졸 (7-nitrobenz-2-oxa-1,3-diazole: NBD), 프탈산, 테레프탈산, 아이소프탈산, 크레실 패스트 바이올렛(cresyl fast violet), 크레실 블루 바이올렛(cresyl blue violet), 브릴리언트 크레실 블루(brilliant cresyl blue), 파라아미노벤조산, 에리쓰로신, 비오틴, 디옥시제닌(digoxigenin), 프탈로시아닌, 아조메틴, 크산틴, N,N-디에틸-4-(5'-아조벤조트리아졸일)-페닐아민, 아미노아크리딘, 및 이들의 조합으로 이루어지는 군으로부터 선택되는 것인 핵산 구조체 복합체.
- 청구항 1의 핵산 구조체 복합체를 제조하는 방법으로서, 상기 방법은
적어도 한 쌍 이상의 상보적인 뉴클레오티드 서열을 포함하는 올리고뉴클레오티드를 제공하는 단계;
상기 상보적인 뉴클레오티드 서열을 포함하는 하나 이상의 올리고뉴클레오티드를 혼성화시켜 핵산 구조체를 형성하는 단계로서,
상기 핵산 구조체는 6개 이상의 변 및 4개 이상의 꼭지점을 포함하는 다면체의 형태이고, 상기 다면체의 변의 하나 이상의 부분은 핵산의 이중가닥 영역인 단계; 및
2개 이상의 금속을 각각 상기 다면체의 다른 꼭지점에 부착시키고 금속 입자가 부착된 꼭지점 사이에 위치한 하나 이상의 변에 하나 이상의 라만-활성 분자를 부착시켜 핵산 구조체 복합체를 제조하는 단계를 포함하는 방법. - 표적 물질을 검출하는 방법에 관한 것으로서, 상기 방법은
청구항 2의 핵산 구조체 복합체를 표적 물질에 노출시켜 상기 표적 물질과 표적 물질에 특이적으로 결합하는 제1 물질을 결합시키는 단계; 및
라만 분광법을 이용하여 상기 핵산 구조체 복합체로부터 라만 신호를 검출하는 단계로서,
라만 신호의 검출은 시료 중 표적 물질의 존재를 나타내는 것인 방법. - 청구항 11에 있어서, 상기 라만 분광법은 표면 증강 라만 분광법, 표면증강 공명 라만 분광법, 하이퍼 라만 분광법, 또는 코히런트 반 스토크스 라만 분광법인 것인 방법.
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