Electrochemical detection of mismatch nucleic acids
    5.
    发明授权
    Electrochemical detection of mismatch nucleic acids 有权
    错配核酸的电化学检测

    公开(公告)号:US07291457B2

    公开(公告)日:2007-11-06

    申请号:US10177537

    申请日:2002-06-21

    IPC分类号: C12Q1/68 C07H21/02 C07H21/04

    摘要: A method and system for specifically detecting perfectly matched probe-target hybrids by annealing a hairpin-based probe to a nucleic acid target under conditions favoring the formation of perfectly matched targets over mismatched targets, and electrochemically detecting the annealed probe. Sensitivity of detection can be enhanced by catalyzed reporter deposition of probe signal prior to electrochemical detection. Specificity can be enhanced by including hairpin-based competitor probes in the annealing step. The detection assay is particularly applicable to typing single nucleotide polymorphisms by DNA sandwich hybridization.

    摘要翻译: 一种用于特异性检测完全匹配的探针 - 靶杂交体的方法和系统,所述方法和系统通过在有助于在失配靶上形成完全匹配的靶的条件下将发夹基探针退火至核酸靶,以及电化学检测退火的探针。 在电化学检测之前,探测信号的催化报道沉积可以提高检测灵敏度。 通过在退火步骤中包含基于发夹的竞争者探针可以提高特异性。 检测方法特别适用于通过DNA夹心杂交分型单核苷酸多态性。