›› 2014, Vol. 41 ›› Issue (11): 40-43.

• 生物技术 • 上一篇    下一篇

猪繁殖与呼吸综合征病毒分离株GP5蛋白ORF5基因的克隆与序列分析

吴晓薇1, 刘晓慧2, 杨谦3, 熊蕊2, 郭凤柳2, 郭霄峰3, 阳佑天3, 陈茹1   

  1. 1. 广东出入境检验检疫局, 广东广州 510642;
    2. 保定出入境检验检疫局, 河北保定 071051;
    3. 华南农业大学, 广东广州 510640
  • 收稿日期:2014-04-04 出版日期:2014-11-20 发布日期:2014-12-06
  • 作者简介:吴晓薇(1975-),女,江苏人,硕士,兽医师,主要从事动物检疫研究。
  • 基金资助:
    广东省科技计划项目(2011B020306004)。

Cloning and Sequence Analysis of GP5 Genes of Porcine Reproductive and Respiratory Syndrome Virus Prevalence Strains

WU Xiao-wei1, LIU Xiao-hui2, YANG Qian3, XIONG Rui2, GUO Feng-liu2, GUO Xiao-feng3, YANG You-tian3, CHEN Ru1   

  1. 1. Guangdong Entry-exit Inspection and Quarantine Bureau, Guangzhou 510642, China;
    2. Baoding Entry-exit Inspection and Quarantine Bureau, Baoding 071051, China;
    3. South China Agricultural University, Guangzhou 510640, China
  • Received:2014-04-04 Online:2014-11-20 Published:2014-12-06

摘要: 为揭示广东地区猪繁殖与呼吸综合征(porcine reproductive and respiratory syndrome,PRRS)可能的流行规律,本研究采用RT-PCR的方法扩增5株来自广东地区猪场临床样品的猪繁殖与呼吸综合征病毒(porcine reproductive and respiratory syndrome virus, PRRSV)分离株的GP5蛋白ORF5基因,将其克隆、测序后与国内外部分毒株相应基因进行核苷酸序列比较。结果表明,PRRSV-2011-GD2、PRRSV-2011-GD3、PRRSV-2013-GD1、PRRSV-2013-GD2和PRRSV-2013-GD3株与美洲型参考株(VR-2332) 的核苷酸序列同源性分别为88.8%、99.5%、88.7%、88.7%和83.5%。系统进化树分析结果表明,PRRSV-2011-GD2、PRRSV-2011-GD3、PRRSV-2013-GD1、PRRSV-2013-GD2和PRRSV-2013-GD3株均属于美洲型。以上结果为更好地了解PRRSV的分子流行病学特征和抗原变异规律提供依据, 同时为研制基因工程疫苗奠定了基础。

关键词: 猪繁殖与呼吸综合征; GP5蛋白; 序列分析

Abstract: In order to reveal the Guangdong region of porcine reproductive and respiratory syndrome (PRRS) epidemic law, 5 strains of swine clinical samples amplified from Guangdong region of PRRSV GP5 genes of the isolates with the method of RT-PCR, cloned, sequenced and domestic and foreign strains corresponding gene nucleotide sequence comparison in this study.The results showed that PRRSV-2011-GD2, PRRSV-2011-GD3, PRRSV-2013-GD1, PRRSV-2013-GD2 and PRRSV-2013-GD3 strains with the American type reference strains (ATCC VR-2332 U87392) nucleotide sequence homology were 88.8%, 99.5%, 88.7%, 88.7% and 83.5%,respectively. The phylogenetic tree analysis indicated that PRRSV-2011-GD2, PRRSV-2011-GD3, PRRSV-2013-GD1, PRRSV-2013-GD2 and PRRSV-2013-GD3 strains belonged to the American.The results provided the basis for a better understanding of the molecular epidemiology of PRRSV features and antigenic variation law, also laid the foundation for the study of gene engineering vaccine.

Key words: porcine reproductive and respiratory syndrome; GP5 protein; sequence analysis

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