天津农学院学报 ›› 2018, Vol. 25 ›› Issue (2): 51-54.doi: 10.19640/j.cnki.jtau.2018.02.013

• 研究与简报 • 上一篇    下一篇

虾肝肠胞虫环介导等温扩增法(LAMP)的建立

孙妍, 董学旺, 魏俊利, 薛淑霞通信作者   

  1. 天津市水生动物疫病预防控制中心,天津 300221
  • 收稿日期:2018-01-31 出版日期:2018-06-20 发布日期:2019-11-12
  • 通讯作者: 薛淑霞(1979-),女,副研究员,博士,主要从事水产动物分子免疫学研究。E-mail:xueshuxia_79@126.com。
  • 作者简介:孙 妍 ( 1985- ) , 女 , 工 程 师 , 硕 士 , 主 要 从 事 水 产 动 物 病 害 学 方 面 研 究 。 E-mail :sunyan19850409@aliyun.com。
  • 基金资助:
    天津市农业科技成果转化与推广项目(201502070)

Establishment of a LAMP assay for detection of Enterocytozoon hepatopenaei

SUN Yan, DONG Xue-wang, WEI Jun-li, XUE Shu-xiaCorresponding Author   

  1. Tianjin Diseases Prevention and Control Center of Aquatic Animals, Tianjin 300221, China
  • Received:2018-01-31 Online:2018-06-20 Published:2019-11-12

摘要: 为建立一种快速检测虾肝肠胞虫(EHP)的环介导等温扩增法(LAMP),根据GenBank中登录的EHP-SSU基因序列设计6条特异性引物,成功建立了EHP-LAMP检测方法。该方法检出限为3.71个质粒拷贝/μL,并且与虾其他常见病毒病的病原(WSSV、IHHNV、CMNV)均无交叉反应。采用LAMP方法和常规PCR方法对30份具有典型EHP感染症状的对虾样品进行检测,结果显示:LAMP和PCR方法的阳性检出率均为100%。结果表明,建立的EHP-LAMP方法具有高灵敏度、高特异性、高准确度的优点,为对虾肝肠胞虫的快速早期诊断奠定基础。

关键词: 对虾, 肝肠胞虫, 环介导等温扩增, 检测

Abstract: In order to develop a rapid method for detecting the Enterocytozoon hepatopenaei (EHP), a loop-mediated isothermal amplification (LAMP) assay was established for targeting EHP-SSU gene with six specific primers following the optimization of the reaction. The results showed that the lowest limit detection of EHP-LAMP assay was 3.71 copies/μL, then its specificity was verified, and no cross-reactions was found for other shrimp pathogenic viruses including WSSV, IHHNV and CMNV. Moreover, 30 samples of shrimp with typical EHP infection symptoms were detected with the LAMP and PCR method, respectively. The results showed that the positive rates of LAMP and PCR were both 100%. In conclusion, the EHP-LAMP method is suitable for EHP early diagnosis with the advantages of high sensitivity, specificity and accuracy.

Key words: shrimp, Enterocytozoon hepatopenaei (EHP), loop-mediated isothermal amplification (LAMP), detection

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