《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (11): 3334-3339.doi: 10.16431/j.cnki.1671-7236.2017.11.032

• 预防兽医 • 上一篇    下一篇

鸭坦布苏病毒可视化RT-LAMP快速检测方法的建立与初步应用

吴植1, 夏文龙1, 蔡树东1, 郭长明1, 袁维峰2, 王永娟1   

  1. 1. 江苏农牧科技职业学院, 江苏省兽用生物制药高技术研究重点实验室, 泰州 225300;
    2. 中国农业科学院北京畜牧兽医研究所, 北京 100193
  • 收稿日期:2017-07-03 出版日期:2017-11-20 发布日期:2017-11-21
  • 通讯作者: 王永娟 E-mail:43088591@qq.com
  • 作者简介:吴植(1980-),男,江苏盐城人,硕士,讲师,研究方向:兽医微生物与免疫学,E-mail:yzwuzhi@163.com
  • 基金资助:

    国家重点研发计划(2017YFD0500905);江苏省教育厅自然基金面上项目(16KJB230004);江苏省"六大人才"高峰第十二批培养对象支助项目(NY023)

Establishment and Application of Visual RT-LAMP for Rapid Detection of Duck Tembusu Virus

WU Zhi1, XIA Wen-long1, CAI Shu-dong1, GUO Chang-ming1, YUAN Wei-feng2, WANG Yong-juan1   

  1. 1. Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Jiangsu Animal Husbandry and Veterinary College, Taizhou 225300, China;
    2. Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2017-07-03 Online:2017-11-20 Published:2017-11-21

摘要:

为实现鸭坦布苏病毒(duck tembusu virus,DTMUV)的快速检测,本研究根据GenBank中公布的DTMUV E蛋白基因的高度保守序列设计了1套引物,通过优化反应体系各组分的浓度、反应时间和温度,建立了一种灵敏、便捷的RT-LAMP扩增方法。结果显示,在最佳条件下甜菜碱对反应体系影响不明显;该方法灵敏度是常规RT-PCR的100倍;只能特异性扩增坦布苏病毒,对于其他常见的禽源病毒无特异性扩增;检测结果可直接通过肉眼观察来判断;对临床74份疑似病料,可检出65份。本试验建立的方法灵敏性高、特异性强,可用于鸭坦布苏病毒病的临床诊断和流行病学调查。

关键词: 鸭坦布苏病毒(DTMUV); 环介导等温扩增; 可视化; 快速检测

Abstract:

To realize the rapid detection of duck tembusu virus (DTMUV), a set of specific primers was designed according to the highly conserved sequence of DTMUV E protein gene published in GenBank. A sensitive and convenient RT-LAMP amplification method was established by optimizing the concentrations of each component, reaction time and temperature in the reaction system. The results showed that the influence of betaine on the reaction system was not obvious under the optimal conditions. This method was 100 times more sensitive than the conventional RT-PCR. The RT-LAMP method specifically amplified tembusu virus but not other common avian viruses. The results could be differentiated by naked eyes. 74 clinic suspicious samples were tested and 65 of them were positive. These results suggested that the RT-LAMP assay could be used as a method for the diagnosis and detection of clinical cases, and molecular epidemiological investigation of duck tembusu virus disease.

Key words: duck tembusu virus (DTMUV); RT-LAMP; visualization; rapid detection

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