畜牧兽医学报

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8株猪繁殖与呼吸综合征病毒ORF5基因的变异分析

刘明阳1,2,张改平2,郝慧芳2,乔松林2,万博2,鲍登克2,郭成留2,王爱萍1*   

  1. 1.郑州大学 生物工程系,郑州 450001;2.河南省农业科学院 农业部动物免疫学重点实验室/河南省动物免疫学重点实验室,郑州 450002
  • 收稿日期:2012-09-13 出版日期:2013-04-23 发布日期:2013-04-23
  • 通讯作者: 王爱萍(1970-),女,青海西宁人,教授,主要从事动物免疫学研究,E-mail:pingaw@126.com
  • 作者简介:刘明阳(1988-),男,河南洛阳人,硕士生,主要从事动物分子免疫的研究,E-mail:lyyg2510@163.com; Tel:15939025620
  • 基金资助:

    国家自然科学基金(31272546)

Genetic Variation Analysis of ORF5 Gene of 8 Porcine Reproductive and Respiratory Syndrome Virus Isolates

LIU Ming-yang1,2, ZHANG Gai-ping2, HAO Hui-fang2, QIAO Song-lin2,WAN Bo2, BAO Deng-ke2, GUO Cheng-liu2, WANG Ai-ping1*   

  1. 1. Department of Bioengineering, Zhengzhou University, Zhengzhou 450001, China; 2. Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratoryof Animal Immunology, Henan Academy of Agricultural Science, Zhengzhou 450002, China
  • Received:2012-09-13 Online:2013-04-23 Published:2013-04-23

摘要:

本研究拟初步了解中原地区近期猪繁殖与呼吸综合征病毒(PRRSV)的变异情况。对2011—2012年间从河南及周边省份发病猪场分离的8株PRRSV毒株Nsp2基因变异区进行RT-PCR扩增,同时对主要结构蛋白GP5基因进行克隆测序并与GenBank中登录的中国历年来流行的PRRSV代表毒株的GP5蛋白序列进行遗传进化分析,对主要氨基酸基序进行比对分析。结果表明,2011—2012年在中原地区分离的8株PRRSV分离株均为Nsp2缺失变异株,GP5基因与2006年中国高致病PRRSV代表毒株JXA1同源性较高。

Abstract:

Real time monitoring information was analyzed to understand the genetic and pathogenic evolution of porcine reproductive and respiratory syndrome virus (PRRSV) in Central China during 2011-2012. RT-PCR was conducted to identify the discontinuous 29-amino acid deletion in the Nsp2 gene, which is the characteristic of highly-pathogenetic PRRSV (HP-PRRSV). The GP5 gene of 8 PRRSV isolates were cloned, sequenced and subsequently compared with that of 62 typical isolates deposited in GenBank over the years. The results showed that all the 8 isolates collected in Central China during 2011-2012 were closely related to the HP-PRRSV emerged in Southern China in 2006.

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