河南农业科学 ›› 2023, Vol. 52 ›› Issue (2): 136-144.DOI: 10.15933/j.cnki.1004-3268.2023.02.015

• 畜牧·兽医 • 上一篇    下一篇

猪细小病毒BJ2 株的分离鉴定及全基因组序列分析

赵文影1,2,张云静1,2,白小飞1,2,孙玉洁1,2,郭玲花1,2,黄柏成1,2,田克恭1,2   

  1. (1.国家兽用药品工程技术研究中心,河南 洛阳 471000;2.普莱柯生物工程股份有限公司,河南 洛阳 471000)
  • 收稿日期:2022-07-20 出版日期:2023-02-15 发布日期:2023-04-03
  • 通讯作者: 黄柏成(1986-),男,湖南株洲人,助理研究员,博士,主要从事动物疫病诊断与防控技术研究。E-mail:hbch228@163.com 田克恭(1964-),男,山西万荣人,研究员,博士,主要从事动物疫病诊断与防控技术研究。E-mail:vetvac@126.com
  • 作者简介:赵文影(1992-),女,河南开封人,硕士,主要从事动物疫病诊断研究。E-mail:18738595733@163.com。张云静为同等贡献作者
  • 基金资助:
    郑洛新自创区创新引领型产业集群专项(201200211200)

Isolation,Identification and Whole Genome Sequence Analysis of Porcine Parvovirus BJ2 Strain

ZHAO Wenying1,2,ZHANG Yunjing1,2,BAI Xiaofei1,2,SUN Yujie1,2,GUO Linghua1,2,HUANG Baicheng1,2,TIAN Kegong1,2   

  1. (1.National Research Center for Veterinary Medicine,Luoyang 471000,China;2.Publike Bioengineering Co.,Ltd.,Luoyang 471000,China)
  • Received:2022-07-20 Published:2023-02-15 Online:2023-04-03

摘要: 为了解国内猪细小病毒(PPV)的流行、毒株变异情况,采用PPV特异性PCR方法检测2020—2021年从江苏、河南和北京3个省市采集的组织样品,将PPV阳性病料接种猪睾丸细胞(ST)进行病毒分离,利用间接免疫荧光方法(IFA)、实时荧光定量PCR(qPCR)和电镜观察对分离株进行鉴定,并测定分离株全基因组核苷酸序列,之后应用MEGA 6.0和MegAlign软件对分离株进行遗传变异分析。结果表明,成功分离到1株PPV,命名为BJ2株;全基因组核苷酸一致性分析结果显示,BJ2株与皮炎型强毒株Kresse株、Challenge株核苷酸一致性为99.3%,与实验室2019年分离株HeN1202株核苷酸一致性为95.9%;VP2基因核苷酸一致性和遗传进化分析结果显示,BJ2株与德国27a株处于同一进化分支,其核苷酸一致性为99.3%,HeN1202株与弱毒株NADL-2株亲缘关系较近;BJ2株与德国27a株相比,VP2蛋白氨基酸序列存在2个位点差异。综上,PPV BJ2株与德国27a株亲缘关系较近。

关键词: 猪细小病毒, 分离鉴定, VP2基因, 序列分析, 抗原漂移

Abstract: To monitor the prevalence and variation of porcine parvovirus(PPV) in China,the tissue samples collected from Jiangsu,Henan and Beijing during 2020—2021 were detected by the PPV‑specific PCR method. The PPV‑positive samples in the PCR test were inoculated into porcine testicular cells(ST),and the isolated strain was identified by indirect immunofluorescence(IFA),real‑time fluorescence quantitative PCR(qPCR),and electron microscope.After that,the full genome of the strain was sequenced,which was then analyzed by MEGA 6.0 and MegAlign softwares.The isolated strain of PPV was named BJ2.At the whole genome level,the BJ2strain showed nucleotide consistency of 99.3%,99.3%,and 95.9% compared with the strains of Kresse,Challenge,and HeN1202(isolated in 2019),respectively.The VP2 gene of the BJ2 strain showed nucleotide consistency of 99.3% compared with the German strain 27a,and evolutionarily,HeN1202 was closely related to NADL‑2.Compared with the VP2 protein of the 27a strain,the amino acid sequence of BJ2 VP2 protein has two different amino acid sites.In conclusion,PPV BJ2 was evolutionarily closely related to German strain 27a.

Key words: Porcine parvovirus, Isolation and identification, VP2 gene, Sequence analysis, Antigenic drift

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