实验动物与比较医学 ›› 2020, Vol. 40 ›› Issue (2): 95-103.DOI: 10.3969/j.issn.1674-5817.2020.02.002

• 论著 • 上一篇    下一篇

小鼠肝炎病毒实时荧光定量PCR方法的建立及在部分啮齿类动物的应用

王吉, 王莎莎, 付瑞, 王淑菁, 李威, 秦骁, 黄宗文, 李晓波, 巩薇, 岳秉飞, 贺争鸣   

  1. 中国食品药品检定研究院 国家实验动物微生物遗传检测中心, 北京 102629
  • 收稿日期:2019-08-12 出版日期:2020-04-25 发布日期:2020-12-18
  • 作者简介:王吉(1974-), 女, 硕士, 研究员, 从事微生物与免疫学研究。Email: wj_nd_jds@sina.com。共同第一作者: 王莎莎(1989-), 女, 免疫学硕士研究生。E-mail: wangsha0316@126.com
  • 基金资助:
    国家科技支撑计划(2015BAI09B02)

Establishment of Real-time Fluorescent Quantitative PCR Method for Mouse Hepatitis Virus and Application in Some Rodents

WANG Ji, WANG Shasha, FU Rui, WANG Shujing, LI Wei, QIN Xiao, HUANG Zongwen, LI Xiaobo, GONG Wei, YUE Bingfei, HE Zhengming   

  1. National Institutes for Food and Drug Control, National Center for Quality of Laboratory Animal, Beijing 102629, China
  • Received:2019-08-12 Online:2020-04-25 Published:2020-12-18

摘要: 目的 建立小鼠肝炎病毒(MHV)实时荧光定量PCR检测方法,并初步应用于实验裸鼹鼠等啮齿类动物的检测。方法 选择MHV E基因保守区域设计合成特异性引物和探针,建立荧光定量PCR方法,并对方法特异度、敏感度、线性 、重复性和稳定性进行方法学验证。同时用建立的方法对79只清洁级小鼠、35只SPF小鼠、63只裸鼹鼠、10只长爪沙鼠、20只金黄仓鼠和4只黄鼠进行MHV检测。结果 成功建立了MHV实时荧光定量PCR方法;方法的线性范围为(1×101~1×109)拷贝/μL,与仙台(SV)病毒、呼肠孤病毒3型(Reo3)、小鼠肺炎病毒(PVM)、牛冠状病毒(BCV)均无交叉反应,方法的检测敏感度为10 拷贝/μL。重复性和稳定性试验显示实验间变异系数均小于5%。检测结果显示63只裸鼹鼠、35只SPF小鼠、10只长爪沙鼠、20只金黄仓鼠和4只黄鼠均为阴性。79只清洁级小鼠MHV阳性率为22.78%。建立的方法与RT-PCR比较,可信度达97.47%。 结论 建立的MHV荧光定量PCR方法特异、敏感,能够对多种啮齿类动物体内携带的MHV进行检测。

关键词: 小鼠肝炎病毒, 实时荧光定量PCR方法, 啮齿类动物

Abstract: Objective To establish a real-time fluorescent quantitative PCR (Q-PCR) method for detection of mouse hepatitis virus (MHV) in naked mole-rats and other rodent animals. Methods The specific primers and probe were designed and synthesized by selecting conserved regions of MHV E gene to establish the Q-PCR method. Then the linearity, specificity, sensitivity, repeatability and stability of this method was verified. Meanwhile, the established method was used to detect 79 clean grade mice, 63 naked mole-Crats, 35 SPF mice, 10 Mongolian gerbils, 20 golden hamsters and 4 ground squirrels for MHV. Results The real-time fluorescent quantitative PCR method for MHV was successfully established. The linear range of the method was 101 copies/μL to 109copies/μL. The method has no cross reaction with Sendai (SV), reovirus type 3 (Reo3), pneumonia virus of mice (PVM), bovine coronavirus (BCV).The detection sensitivity could reach 10 copies/μL, the results of repeatability and stability showed that the coefficient of variation between experiments was less than 5%.The positive rate of MHV in 79 clean grade mice was 22.78%, and that of 63 naked mole-Crats, 35 SPF mice, 10 Mongolian gerbis, 20 golden hamsters and 4 ground squirrels were all negative. Established method was compared with RT-PCR, the coincidence rate was 97.47%. Conclusion The established Q-PCR method for MHV is good in linearity and specificity, it can be used for the detection MHV in multiple varieties rodents.

Key words: Mouse hepatitis virus, Real-time fluorescent quantitative PCR, Rodents

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