中国农业科学 ›› 2010, Vol. 43 ›› Issue (1): 185-191 .doi: 10.3864/j.issn.0578-1752.2010.01.022

• 兽医 • 上一篇    下一篇

猪呼吸与繁殖综合症病毒RT-LAMP检测方法的建立

鑫婷,侯绍华,贾红,郭晓宇,丁家波,李延鹏,丁敏,朱鸿飞

  

  1. (中国农业科学院北京畜牧兽医研究所)
  • 收稿日期:2008-11-14 修回日期:2009-10-10 出版日期:2010-01-10 发布日期:2010-01-10
  • 通讯作者: 朱鸿飞

Development of a Novel RT-LAMP Assay for Porcine Reproductive and Respiratory Syndrome Virus

XIN Ting, HOU Shao-hua, JIA Hong, GUO Xiao-yu, DING Jia-bo, LI Yan-peng, DING Min, ZHU Hong-fei
  

  1. (中国农业科学院北京畜牧兽医研究所)
  • Received:2008-11-14 Revised:2009-10-10 Online:2010-01-10 Published:2010-01-10
  • Contact: ZHU Hong-fei

摘要:

【目的】建立一种适用于猪繁殖与呼吸综合症病毒的快速、灵敏、特异性检测方法,即一步反转录环介导等温扩增技术(RT-LAMP)。【方法】设计3对针对PRRSV N基因的8个位点的特异性引物,用优化后的反应体系检测RT-LAMP的特异性、灵敏性并对临床样本进行检测。【结果】RT-LAMP检测方法从核酸抽提到检测仅需要70 min,肉眼即可观察检测结果,该方法具有良好的特异性,灵敏度是RT-PCR的10 000倍,在对50份猪血液样本RNA的检测中,该方法与传统的RT-PCR检测方法具有很好的统一性(κ=0.83)。【结论】RT-LAMP检测方法可快速、灵敏、特异的检测PRRSV,并适用基层和现场检测。

关键词: 猪繁殖与呼吸综合征病毒, RT-LAMP, 检测

Abstract:

【Objective】 The objective of the experiment is to develop a one-step reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay for rapid and sensitive detection of porcine reproductive and respiratory syndrome virus (PRRSV). 【Method】 Three pairs of primers were designed to identify 8 positions in N gene, the sensitivity and specificity of RT-LAMP were determined and clinical test was performed under optimized amplification condition. 【Result】 A RT-LAMP assay was developed for the rapid detection of PRRSV. The process of assay was conducted with one step amplification within 70 minutes and amplification results were visualized. The sensitivity of RT-LAMP assay was 10 000 times higher than RT-PCR. In the detection of 50 porcine serum samples, this assay showed excellent agreement with the standard RT-PCR assay (κ=0.83). 【Conclusion】 Therefore, the rapid and simple assay is a potential useful technique for PRRSV detection in field condition.

Key words: PRRSV, RT-LAMP, detection