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非标记探针高分辨率熔解曲线技术检测HBV P区rt204位点耐药突变

High resolution melting analysis with unlabeled probe for detection of rt204 mutation in HBV P gene
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摘要 目的 建立一种基于非标记探针高分辨率熔解曲线技术(HRM)检测HBV P区rt204位点耐药突变的方法.方法 构建野生株rt204M、突变株rt204I和rt204V的质粒,设计、优化探针.利用质粒作为标准品建立HRM特征性解链图谱.收集2010年5月至2012年5月宁波大学附属医院诊治的185例慢性乙型肝炎患者外周血样本共185份,用HRM技术检测所有样本,并与特征性解链图谱比对,筛选出rt204位点的突变,再经基因测序验证.采用配对x2检验比较两种方法的变异检出率.结果 突变株rt204I、rt204V和野生株rt204M的熔解温度(Tm)分别为58.0℃、60.6℃和62.5℃;185份样本中,HRM技术成功分析168份(90.8%),基因测序成功分析155份(83.8%),二者差异有统计学意义(P<0.01);同时被两种方法检出的155份临床样本中,非标记探针HRM技术检测到野生株75份(rt204M),变异株80份(55份rt204I、25份rt204V),变异检出率为51.6%(80/155);基因测序法检测到野生株110份(rt204M),变异株45份(30份rt204I、15份rt204V),变异检出率为29.0% (45/155),两种方法差异有统计学意义(P<0.01).结论 非标记探针HRM技术是一种简单、灵敏、快速、特异的HBV P区rt204位点耐药突变检测方法.
出处 《中华临床感染病杂志》 CAS 2013年第4期200-204,共5页 Chinese Journal of Clinical Infectious Diseases
基金 宁波市自然科学基金
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