畜牧兽医学报 ›› 2014, Vol. 45 ›› Issue (10): 1733-1738.doi: 10.11843/j.issn.0366-6964.2014.10.021

• 研究简报 • 上一篇    

胞内劳森菌TaqMan荧光定量PCR检测方法的建立

白挨泉1,郭建超1,2,覃宗华3,蒲文珺1,马春全1,李国清2*,张浩吉1*   

  1. (1.佛山科学技术学院,佛山 528231;2.华南农业大学,广州 510642;3.广州英赛特生物技术有限公司,广州 510000)
  • 收稿日期:2014-03-17 出版日期:2014-10-23 发布日期:2014-10-23
  • 通讯作者: 张浩吉(1963-),男,陕西杨凌人,教授,主要从事预防兽医学的教学与研究,E-mail:zhanghaoji@aliyun.com;李国清(1957-),男,安徽怀宁人,教授,主要从事兽医寄生虫研究,E-mail:gqli@scau.edu.cn
  • 作者简介:白挨泉(1970-),男,山西兴县人,副教授,主要从事家畜传染病学的教学和研究,E-mail:ericbai1970@163.com
  • 基金资助:

    广东省科技计划项目(2012A020602072)

Development of a TaqMan Quantitative Polymerase Chain Reaction Assay for Detecting Lawsonia intracellularis

BAI Ai-quan1,GUO Jian-chao1,2,QIN Zong-hua3,PU Wen-jun1 ,MA Chun-quan1 ,LI Guo-qing2* ,ZHANG Hao-ji1*   

  1. (1.Department of Veterinary Medicine,Foshan University,Foshan 528231,China;2.College of Veterinary Medicine,South China Agricultural University,Guangzhou 510642,China;3.Guangzhou Insighter Biotechnology Co.,Ltd ,Guangzhou 510000,China)
  • Received:2014-03-17 Online:2014-10-23 Published:2014-10-23
  • Supported by:
     

摘要:

为建立猪胞内劳森菌的TaqMan荧光定量PCR检测方法,针对胞内劳森菌的16S rDNA基因设计合成特异性的引物和TaqMan探针,经过优化各项反应条件,建立了TaqMan荧光定量PCR检测方法。该方法仅对胞内劳森菌靶基因有信号,其相关性方程为Ct=-3.318×log(conc)+ 38.840(R2=0.998),具有良好的线性关系,对标准质粒最低检出量为5.55 copies•μL-1,组内样品的变异系数低于2%。表明该TaqMan荧光定量PCR方法的特异性强、敏感度高、重复性好,具有较好的实用性,能准确定量DNA样品中靶基因的拷贝数,适合于对临床样品中胞内劳森菌定性、定量检测和防治效果的评价。

Abstract:

Based on the 16S rDNA,specific primers and probe were designed,and a TaqMan quantitative polymerase chain reaction assay (TaqMan-PCR) was developed to determinate Lawsonia intracellularis.The results showed that the correlation equation of this TaqMan-PCR method was Ct=-3.318×log(conc)+38.840,and had a good linear relativity (R2=0.998).The TaqMan-PCR prove to be a sensitive,specific,reproducible,and accurate method,and can detecting as little as 5.55 copies•μL-1 standard plasmid with 16S rDNA of L.intracellularis. The new TaqMan-PCR could be applied for qualitative and quantitative detection of L.intracellularis from clinical sample and the evaluation of treatment effect.

中图分类号: