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双链置换探针实时PCR用于DNA池的等位基因频率测定
Authors
李庆阁
梁基选
程金平
Publication date
30 December 2004
Publisher
Abstract
结合荧光双链置换探针的特异性和实时PCR的准确定量能力,建立了一种新颖、准确、价廉且高通量的测定DNA池等位基因频率的方法.该方法采用不同荧光标记的双链置换探针1次PCR反应即可测定出等位基因频率.实验以β 地中海贫血CDs41 42( TCTT)突变为对象,分别用荧光染料FAM和ROX标记野生型和突变型探针,由实时PCR检测建立的等位基因浓度与循环阈值的响应曲线计算DNA池的等位基因频率.结果表明,建立的系列等位基因浓度与循环阈值呈线性关系,线性相关系数分别为0.9977(野生型等位基因)和0.9938(突变型等位基因),可检测的最低等位基因频率达1%,等位基因频率在1%~90%范围内测定误差小于4%.该方法可广泛用于流行病学调查、遗传连锁分析以及全基因组连锁不平衡扫描等领域
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Last time updated on 16/06/2016