小反刍兽疫病毒Ⅱ系与Ⅳ系毒株SYBR GreenⅠ荧光RT-PCR鉴别检测方法的建立Establishment of SYBR Green Ⅰ real-time RT-PCR method for differential detection of peste des petits ruminants virus Ⅱ and Ⅳ strains
董帅,杨哲,孟卫芹,陈金龙,刘建钗,沈志强,王金良
摘要(Abstract):
为建立小反刍兽疫病毒(PPRV)Ⅱ系与Ⅳ系毒株SYBR GreenⅠ荧光RT-PCR的鉴别检测方法,针对PPRV-H基因的高变区域设计1对特异性引物,确定反应条件,分析其敏感性和特异性,并对临床样本进行验证。60℃退火、76℃收集荧光信号获得试验效果最好,熔解曲线为单一峰,Ⅱ系毒株熔解温度78.63℃,Ⅳ系毒株熔解温度80.08℃,易于区分;最低检测限为10拷贝/μL,批内、批间变异系数均小于0.5%,羊口疮病毒(ORFV)等4种病毒无扩增曲线产生;检测140份临床样本,与国家标准检测方法结果符合率100%。本研究建立的SYBR GreenⅠ荧光RT-PCR检测方法可以快速、灵敏和特异地鉴别检测出PPRVⅡ系与Ⅳ系毒株,满足疫病快速诊断的需求。
关键词(KeyWords): 小反刍兽疫病毒;荧光RT-PCR;SYBR Green I;熔解曲线;鉴别检测
基金项目(Foundation): 山东省羊产业技术体系岗位专家资助项目(SDAIT-10-07)
作者(Author): 董帅,杨哲,孟卫芹,陈金龙,刘建钗,沈志强,王金良
DOI: 10.16303/j.cnki.1005-4545.2023.12.05
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