›› 2010, Vol. 37 ›› Issue (9): 48-51.

• 生物技术 • 上一篇    下一篇

猪繁殖与呼吸综合征病毒流行株Nsp2基因的克隆及序列分析

闫东明1,卢士英1,任洪林1,周1,宫彬彬1,郑鑫2,杜运升3,王光明1,柳增善1   

  1. (1.人兽共患病研究教育部重点实验室,吉林大学人兽共患病研究所,畜牧兽医学院,长春 130062;2.吉林农业大学动物科学技术学院,长春 130118;3.长春康发动物药品研究所,长春 130062)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-09-20 发布日期:2010-09-20
  • 通讯作者: 柳增善;王光明

Cloning and Sequence Analysis of Nsp2 Genes of Porcine Reproductive and Respiratory Syndrome Virus Prevalence Strains

YAN Dong-ming1,LU Shi-ying1,REN Hong-lin1,ZHOU Yu1, GONG Bin-bin1,ZHENG Xin2,DU Yun-sheng3,WANG Guang-ming1,LIU Zeng-shan1   

  1. (1.Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China; 2.College of Animal Science and Technology, Jinlin Agricultural University, Changchun 130118, China; 3.Kangfa Institute of Animal Drug, Changchun 130062, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-09-20 Published:2010-09-20
  • Contact: LIU Zeng-shan;WANG Guang-ming

摘要: 采用RT-PCR方法,从吉林省部分地区猪场的病料中扩增猪繁殖与呼吸综合征病毒(PRRSV)的Nsp2基因并测序。应用DNAStar 7.0、ClustalX 1.83、MEGA 4.0软件对测序结果进行分析,并与NCBI上已登录的PRRSV代表毒株的Nsp2基因进行序列比对,结果显示,得到的Nsp2基因与VR-2332、CH-1a等代表毒株的一致性为62.0%~87.5%,与国内高致病性PRRSV毒株JXA1、HUB2等的一致性为97.8%~98.9%;氨基酸序列比对结果显示与VR-2332、CH-1a等代表毒株的一致性为34.4%~59.0%,与国内高致病性PRRSV毒株JXA1、HUB2等的一致性为95.1%~98.4%。因此,引起吉林省部分地区猪场发生猪繁殖与呼吸综合征的PRRSV与国内流行的高致病性PRRSV毒株亲缘关系较近。

关键词: 猪繁殖与呼吸综合征病毒; Nsp2基因; 序列分析

Abstract: The nonstructural protein 2(Nsp2) genes of porcine reproductive and respiratory syndrome virus (PRRSV) were cloned using RT-PCR from porcine tissue samples in some pig farms in Jilin province. The sequences of Nsp2 were sequenced and analyzed using DNAStar 7.0,Clustalx 1.83 and MEGA 4. Homology searches were performed by means of BLAST programs by NCBI. Identities of nuclear acid sequences and amino acid sequences deduced from Nsp2 genes cloned were 62.0% to 87.5% and 34.4% to 59.0% with PRRSV standard strains VR-2332 and CH-1a and so on, were 97.8% to 98.9% and 95.1% to 98.4% with Chinese highly pathogenic PRRSV strains JXA1 and HUB2 and so on.Therefore,PRRSVs leading to the infectious disease in some pig farms in Jilin province were high homology with highly pathogenic PRRSV strains.

Key words: porcine reproductive and respiratory syndrome virus; nonstructural protein 2 gene; sequence analysis

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