›› 2016, Vol. 43 ›› Issue (1): 50-57.doi: 10.16431/j.cnki.1671-7236.2016.01.008

• 生物技术 • 上一篇    下一篇

湖南省4株伪狂犬病病毒的分离鉴定及其免疫与毒力相关基因的序列分析

杨涛涛, 赵墩, 刘崇灵, 屈泰龙, 余兴龙   

  1. 湖南农业大学动物医学院, 长沙 410128
  • 收稿日期:2015-08-13 出版日期:2016-01-20 发布日期:2016-01-23
  • 通讯作者: 余兴龙 E-mail:xlyu999@126.com
  • 作者简介:杨涛涛(1991-),男,湖南常德人,硕士,研究方向:动物病原分子学与免疫学,E-mail:yangtt1010@126.com
  • 基金资助:
    长沙市科技成果产业化重点课题(K1308135-31)

Isolation, Identification and Sequence Analysis of Immune and Virulence Genes of Four Pseudorabies Virus Strains from Hunan Province

YANG Tao-tao, ZHAO Dun, LIU Chong-ling, QU Tai-long, YU Xing-long   

  1. College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
  • Received:2015-08-13 Online:2016-01-20 Published:2016-01-23

摘要: 为了解湖南省近年来伪狂犬病病毒(PRV)的分子流行病学情况,更好地控制伪狂犬病,2012-2014年从湖南平江、汨罗、浏阳、长沙4地的4个规模化猪场送检的病料(脑组织)中检测到PRV野毒。将脑组织接种PK-15细胞,经PCR和动物接种鉴定为PRV。4个毒株分别命名为PRV-XiangA、PRV-GA、PRV-YY和PRV-LY。对这4株PRV的免疫(gB、gG、gH、gI、gL、gM)与毒力(gE、PK、TK)相关基因进行序列分析,结果显示这4株PRV的免疫与毒力相关基因核苷酸同源性为99.8%~100.0%,说明分离得到的4株PRV变异极小;将这4株PRV与国内外的主要毒株进行序列比对,结果表明这4株PRV与国内的分离毒株同源性很高,与BJ-YT株和TJ株的亲缘关系最近,核苷酸同源性为99.8%~100.0%,说明当前国内流行的PRV毒株变异较小。

关键词: 伪狂犬病病毒; 分离鉴定; 同源性; 免疫与毒力相关基因; 序列分析

Abstract: To investigate molecular epidemiology of pseudorabies virus(PRV) in recent years in Hunan province and control pseudorabies more better, four wild-type PRV strains were detected from porcine brain tissues, which were collected from four farms of Pingjiang, Miluo, Liuyang and Changsha in Hunan province during 2012-2014.The four PRV strains were isolated by inoculating porcine brain tissues to the PK-15 cells, identified by PCR test and animal inoculation, and named PRV-XiangA, PRV-GA, PRV-YY and PRV-LY, respectively.The results showed the nucleotide homology among the four strains was 99.8% to 100.0%, by aligning the immune(gB, gG, gH, gI, gL and gM) and virulence genes(gE, PK and TK) of the four PRV strains, which indicated that these strains displayed almost no differences.The results of nucleotide alignment between the four strains and main strains isolated at home and abroad showed that the four strains had a high homology with PRV main strains isolated from China, with displaying nucleotide identity of 99.8% to 100.0% to BJ-YT and TJ strains, which revealed that the epidemic PRV strains in China had a little variation currently.

Key words: pseudorabies virus; isolation and identification; homology; immune and virulence genes; sequence analysis

中图分类号: