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乙型脑炎病毒XJ/08/01株的分离鉴定及PrM/E基因的遗传进化分析

作  者:
刘昊;金宁一;段纲;尹革芬;鲁会军
单  位:
中国人民解放军军事医学科学院军事兽医研究所云南农业大学动物科技学院石河子大学动物科技学院吉林农业大学动物科技学院吉林大学畜牧兽医学院;吉林大学;军事医学科学院军事兽医研究所
关键词:
流行性乙型脑炎病毒;PrM/E基因;核酸序列
摘  要:
从新疆维吾尔自治区石河子地区某猪场采集了150份猪脑组织样品,利用RT-PCR方法进行流行性乙型脑炎病毒(JEV)NS1基因扩增,结果有32份组织样品扩增出了430 bp的特异性目的条带。用检测的阳性样品研磨液接种乳鼠进行JEV的分离,经3次乳鼠传代后获得了1株JEV,命名为XJ/08/01。在此基础上,设计引物从接毒乳鼠脑组织样品中扩增JEV的主要抗原基因PrM/E并进行序列分析,结果表明,该分离毒株与JEV疫苗株SA14-14-2的同源性为99.6%,根据基因分型法确定该分离株属于基因Ⅲ型JEV。
译  名:
Isolation and identification of Japanese encephalitis virus XJ/08/01 strain and phylogenetic analysis of its PrM/E gene
作  者:
LIU Hao1,2,JIN Ning-yi1,DUAN Gang2,YIN Ge-fen2,LU Hui-jun1,QU Yong-gang3,YU Chang-yong4,ZHANG Dan1,5,LI Xiao1,JIN Kuo-shi1,5,GUAN Sha-sha2(1.Institute of Military Veterinary,Academy of Military Medical Sciences,Changchun 130062,China;2.College of Animal Science and Technology,Yunnan Agricultural University,Kunming 650201,China;3.College of Animal Science and Technology,Shihezi University,Shihezi 832001,China;4.College of Animal Science and Technology,Jilin Agricultural University,Changchun 130118,China;5.College of Animal Science and Veterinary Medicine,Jilin University,Changchun 130062,China)
关键词:
Japanese encephalitis virus;PrM/E gene;nucleotide sequence
摘  要:
In 2008,150 pig brain samples were collected from a pig farm in Shihezi Prefecture of Xinjiang Uygur Autonomous Region,China.Nucleic acid of NS1 gene of Japanese encephalitis virus(JEV) was detected by RT-PCR from the samples,and 32 out of them were positive.Suckling mice were inoculated with lapping liquids from the 32 positive samples,and one strain of JEV,XJ/08/01,was isolated successfully after 3 passages in the suckling mice.Then primers were designed to amplify JEV PrM/E gene from the brain samples of the inoculated suckling mice.Sequence analysis based on the amplified PrM/E gene indicated that XJ/08/01 shared 99.6% homology with that of JEV vaccine strain SA14-14-2.Genotyping results showed that the isolated XJ/08/01 represented JEV genotypeⅢ.

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