河南农业科学 ›› 2023, Vol. 52 ›› Issue (1): 134-143.DOI: 10.15933/j.cnki.1004-3268.2023.01.014

• 畜牧·兽医 • 上一篇    下一篇

miR-M11 基因编辑对马立克病病毒体外复制的影响

王伟东1,2,3,滕蔓1,3,郑鹿平1,3,刘金玲1,3,张文凯1,3,4,李林燕1,3,4,张志会1,2,3,樊剑鸣2,罗俊1,3,4
  

  1. (1.河南省农业科学院动物免疫学重点实验室/农业农村部动物免疫学重点实验室/河南省动物免疫学重点实验室,河南 郑州 450002;2.郑州大学 公共卫生学院,河南 郑州 450001;3.河南省农业科学院 中英禽病国际研究中心,河南 郑州 450002;4.河南科技大学 动物科技学院,河南 洛阳 471003)
  • 收稿日期:2022-06-01 出版日期:2023-01-15 发布日期:2023-03-09
  • 通讯作者: 罗俊(1978-),男,河南罗山人,研究员,主要从事动物病毒学研究。E-mail:luojun593@aliyun.com 樊剑鸣(1971-),男,河南罗山人,副教授,主要从事分子毒理学研究。E-mail:fan5746067@126.com
  • 作者简介:王伟东(1995-),男,河南周口人,在读硕士研究生,研究方向:分子毒理学。E-mail:wdwang136@163.com
  • 基金资助:
    国家自然科学基金项目(U21A20260);河南省自然科学基金项目(212300410359);河南省农业科学院自主创新项目(2022ZC65)

Effect of miR‑M11 Gene Editing on Replication of Marek’s Disease Virus in Vitro

WANG Weidong1,2,3,TENG Man1,3,ZHENG Luping1,3,LIU Jinling1,3,ZHANG Wenkai1,3,4,LI Linyan1,3,4,ZHANG Zhihui1,2,3,FAN Jianming2,LUO Jun1,3,4   

  1. (1.Key Laboratory of Animal Immunology,Henan Academy of Agricultural Sciences/ Ministry of Agriculture and Rural Affairs & Henan Provincial Key Laboratory of Animal Immunology,Zhengzhou 450002,China;2.College of Public Health,Zhengzhou University,Zhengzhou 450001,China;3.UK‑China Centre of Excellence for Research on Avian Diseases,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China;4.College of Animal Science and Technology,Henan University of Science and Technology,Luoyang 471003,China)
  • Received:2022-06-01 Published:2023-01-15 Online:2023-03-09

摘要: 为探究病毒编码的微小RNA前体基因miR-M11对马立克病病毒(MDV)体外复制能力的影响,以MDV国内分离株HN302为研究对象,利用CRISPR/Cas9系统靶向编辑并敲除位于Mid基因簇的miRM11,构建1株miR-M11基因编辑缺失毒株HN302ΔM11(克隆号C58-8-4)。经过PCR鉴定、测序分析、间接免疫荧光试验(IFA)、实时荧光定量PCR(qPCR)以及传代稳定性分析,证实HN302编码的miRM11被精确编辑并从病毒基因组中完全缺失,且未发生回复突变。病毒增殖曲线绘制结果显示,miRM11缺失毒株HN302ΔM11的增殖速度显著高于亲本毒株HN302(P<0.05)。综上,miR-M11是MDV复制的非必需基因,且其缺失后可增强MDV的体外复制能力。

关键词: 马立克病, miR-M11, 微小RNA, CRISPR/Cas9, 基因编辑, qPCR, 复制

Abstract: In order to explore the effect of virus‑encoded miRNA precursor miR‑M11 on the in vitro replication ability of MDV,the domestic isolate HN302 of MDV was used as the parental virus,and the CRISPR/Cas9 system was used to targetedly edit and knock out miR‑M11 located in the Mid gene cluster,to construct a miR‑M11 gene editing deletion strain HN302ΔM11(clone number C58‑8‑4).After PCR identification,DNA sequencing,indirect immunofluorescence assay(IFA),real‑time quantitative PCR(qPCR),and passage stability analysis,it was confirmed that the miR‑M11 encoded by HN302 was precisely edited and completely deleted from the viral genome,and no reverse mutation occurred.The results of the virus proliferation curve assay showed that the proliferation rate of the miR‑M11‑deleted virus strain HN302ΔM11 was significantly higher than that of the parental virus strain HN302(P<0. 05).In conclusion,miR‑M11 is a non‑essential gene for MDV replication,and its deletion can enhance the invitro replication ability of MDV.

Key words: Marek’s disease, miR?M11, miRNA, CRISPR/Cas9, Gene editing, qPCR, Replication

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