一步法多重RT-PCR快速筛查A型、B型和新型甲型H1N1流感病毒

One-step multiplex RT-PCR for rapid screening of type A,B and novel A (H1N1) influenza viruses

目的建立能同时筛查A型、B型和新型甲型H1N1流感病毒的多重RT-PCR技术。方法针对A型流感病毒的M基因、B型流感病毒的NS基因设计通用扩增引物,针对新型甲型H1N1流感病毒的HA基因设计特异性扩增引物,采用一步法建立多重RT-PCR反应体系。通过盲法实验与实时荧光RT-PCR进行比对来评价方法的准确性,并应用于临床评价方法的实用性和有效性。结果琼脂糖凝胶电泳分析多重RT-PCR产物,结果显示目的扩增片段条带清晰明亮,没有非特异性产物出现,可见该方法扩增效率高,特异性强。50份样本的盲法实验结果显示两种方法检测结果完全一致,符合率为100%。结论建立的多重RT-PCR方法能通过一次实验快速、准确地同时筛检A型、B型和新型甲型H1N1流感病毒,是一项成本低廉、对流感的疫情监测和早期诊断具有实用价值的筛检技术。

Objective To developed a multiplex RT-PCR assay for simultaneous screening of type A, B and novel A (H1N1) influenza viruses. Methods Two pairs of universal primers in were designed for amplifying the M gene and NS gene of type A and B influenza viruses, respectively. A pair of specific primers of HA gene was designed to detect novel A (H1N1) influenza virus. A one-step method was used to establish the multiplex RT-PCR system. A blinded experiment was carried out to validate the accuracy of this assay in co...