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发明授权
CN103228797B 利用双重标记固定化探针的固相中的靶核酸序列检测 有权

利用双重标记固定化探针的固相中的靶核酸序列检测
摘要：
本发明涉及利用双重标记固定化探针及该双重标记固定化探针对于DNA聚合物的5’→3’外切核酸酶活性的抵抗性，在固相检测靶核酸序列的新颖方法。本发明中，由于通过内部核苷酸碱基成分的标记引发的对于核酸酶的抵抗性，使标记残留在固相基质上，因此，无需考虑在固相基质上使标记残留的适合的位点。本发明由于能够自由决定探针上的内部标记的位点，因此，将标记位于使探针上的双重标记系统的猝灭效率最大化的适合的位点，从而使本底信号最小化。
摘要（英）：

The present invention relates to a novel method for detection of target nucleic acid sequences on a solid phase using dual-labeled immobilized probes and its resistance to a 5′ to 3′ exonuclease activity of a DNA polymerase. Because the label is remained on the solid substrate by resistance to nucleases due to labeling of a base component the internal nucleotide, the present invention requires no consideration of a suitability of position of the label for remaining on the solid substrate. The present invention ensures to minimize background signal by positioning labels at a site on probes suitable to maximize quenching efficiency of the dual label system, since it permits to freely determine the position of the internal label on probes.

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