›› 2009, Vol. 21 ›› Issue (1): 0-38.

• 论文 •    

猪瘟病毒荧光定量PCR标准阳性模板的构建

陆永干1,2,戴贤君 3,姚建红 2,黄利权 1   

  1. 1 浙江大学动物科学学院,浙江杭州310029;2 杭州市畜牧兽医局,浙江杭州310020;3 中国计量学院生命科学学院,浙江杭州310018
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-01-25 发布日期:2009-01-25

Construction of standard positive template of the fluorescent quantitative PCR assay for detection of swine fever virus

LU Yong—gan;DAI Xian—jun;YAO Jian—hong;HUANG Li—quan   

  1. 1 College ofAnimal Science,Zhejiang University,Hangzhou 310029,China; 2 Hangzhou Bureau of Husbandry and Veterinary,Hangzhou 310020,China; 3 College of Life Science,China Jiliang University,Hangzhou 310018,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-01-25 Published:2009-01-25

摘要: 设计扩增猪瘟病毒(swine fever virus,SFV)核酸5’端非翻译区的引物,采用RT-PCR方法克隆目的片段并插入PMD一18 simple T质粒,重组质粒转化大肠杆菌DH5a感受态细胞,提取质粒经PCR和序列测定证实为阳性重组质粒,命名为pSF。将构建的pSF作为标准阳性模板进行荧光定量PCR(FQ-PCR)检测表明,此模板在一20℃保存6个月对结果无显著影响;对于1×10 9,1×10 7,1×10 5拷贝/2μL 的pSF用FQ-PCR方法测定的ct值最大变异系数分别为1.55%;使用该模板建立的定量范围为1×10 2—1×10 11拷贝/2 μL ;构建的阳性重组质粒pSF具有良好的稳定性和特异性。该方法可以用于临床诊断。

关键词: 猪瘟病毒, 荧光定量PCR, 重组质粒

Abstract: 5 ‘UTR of swine fever virus(SFV)was amplified by RT-PCR and cloned into pMD-18 simple T vector to construct a recombinant plasmid pSF,which was used as standard positive template for the fluorescent quantitative PCR(FQ—PCR)to
detect SFV.The pSF was identified by PCR and DNA sequence analysis.The plasmid Was stable after 6 months storage at 一20℃ .When the plasmids DNA of 1.0×10 9 , 1.0×10 7 and 1.0×10 7 copies/2 μL were used as template,the largest variation coefiqeient of Ct value was 1.55%.and the FQ—PCR provides a broad linear range from 1×10 7 to 1×10 11 copies of DNA per reaction.The pSF was specific and stable for the FQ-PCR.The method can be used for the clinical diagnosis.

Key words: swine fever virus, fluorescent quantitative PCR(FQ-PCR), recombinant plasmid