实时荧光定量Taqman探针法检测线粒体DNA 1494C>T突变技术的建立及应用研究

Establishment of the Real-Time Taqman Probe Technique inDetecting the MtDNA 1494C>T Mutation

袁永一;黄德亮;韩东一;金政策;戴朴;

1:中国人民解放军总医院耳鼻咽喉-头颈外科中国人民解放军总医院耳鼻喉研究所聋病分子诊断中心

2:山东三月三(澳麦尔)基因技术有限公司

摘要
目的建立以实时荧光定量Taqman探针技术检测线粒体DNA(mitochondial DNA,mtDNA)1494C>T突变的方法,实现快速、简便、准确筛查这一突变的目标。方法设计针对mtDNA1494C>T突变的TaqmanMGB探针和引物,从解放军总医院聋病分子诊断中心耳聋DNA库随机选取标本96份,遵循双盲法原则,分别以实时荧光定量Taqman MGB探针法和序列测定方法检测1494C>T突变,对检测方法进行可靠性验证。结果实时荧光定量Taqman MGB探针法检测mtDNA1494C>T突变,反应时间由原来的12小时缩短到1.5小时,96例耳聋病例中发现mtDNA1494C>T突变阳性患者11例,阴性85例,与直接测序法检测结果完全相符,未发现假阳性和假阴性。结论实时荧光定量Taqman探针技术检测mtDNA 1494C>T突变的方法简单省时,结果准确直观,特异性强,敏感性高,适用于对母系遗传性聋mtDNA1494C>T突变的大规模筛查或预防性检查。
关键词
耳聋;线粒体DNA;实时定量聚合酶链反应;Taqman探针
基金项目(Foundation):
国家自然科学基金面上项目(30572015);; 北京市自然科学基金面上项目(7062062);; 国家自然科学基金青年科学基金项目(30801285)联合资助
作者
袁永一;黄德亮;韩东一;金政策;戴朴;
参考文献

1 Prezant TR,Agapian JV,Bohl man MC,et al.Mitochondrial ribo-somal RNA mutation associated with both antibiotic-induced andnon-syndromic deafness[J].Nat Genet,1993,4:289.

2 Zhao H,Li RH,Wang QJ,et al.Maternally inherited amin-oglycoside-induced and nonsyndromic deafness is associatedwith the novel C1494T mutation in the mitochondrial 12SrRNAgene in a large Chinese family[J].Am J Hum Genet,2004,74:139.

3 Wang Q,Li QZ,Han D,et al.Clinical and molecular analysisof a four-generation Chinese family with aminoglycoside-in-duced and nonsyndromic hearingloss associated with the mito-chondrial 12S rRNA C1494T mutation[J].Biochem BiophysRes Commun,2006,340:583.

4 Han DY,Dai P,Zhu QW,et al.The mitochondrial tRNAAlaT5628C variant may have a modifying role in the phenotypicmanifestation of the 12S rRNA C1494T mutation in a largeChinese family with hearing loss[J].Biochem Biophys ResCommun,2007,357:554.

5张立国,张琚.实时定量PCR技术的介绍[J].生物技术,2003,13:39.