中国媒介生物学及控制杂志 ›› 2012, Vol. 23 ›› Issue (5): 391-394.

• 专题报道——虫媒病毒调查研究 • 上一篇    下一篇

云南省澜沧江流域蚊虫流行性乙型脑炎病毒分子特征分析

郭晓芳1,2, 王丕玉2, 曾旭灿2, 赵秋敏1, 周传玲3, 龚道方3, 李佳3, 王海波3, 董利民2, 周红宁2, 张久松1   

  1. 1. 军事医学科学院微生物流行病研究所, 北京 100071;
    2. 云南省寄生虫病防治所, 云南普洱 665000;
    3. 大理学院病原与媒介生物研究所(普洱分部)
  • 收稿日期:2012-07-09 出版日期:2012-10-20 发布日期:2012-10-20
  • 通讯作者: 张久松,Email: zhang_jiusong@yahoo.com.cn;周红宁,Email: zhhn@yipd.org
  • 基金资助:

    国家自然科学基金(30660160)

Analysis of molecular characteristics of Japanese encephalitis virus isolatedfrom mosquitoes in Lancang River watershed in Yunnan province, China

GUO Xiao-fang1,2, WANG Pi-yu2, ZENG Xu-can2, ZHAO Qiu-min1, ZHOU Chuan-ling3, GONG Dao-fang3, LI Jia3, WANG Hai-bo3, DONG Li-min2, ZHOU Hong-ning2, ZHANG Jiu-song1   

  1. 1. Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China;
    2. Yunnan Institute ofParasitic Diseases, Pu’er 665000, Yunnan Province, China;
    3. Institute of Pathogens and Vectors, Dali University(Puer Division)
  • Received:2012-07-09 Online:2012-10-20 Published:2012-10-20
  • Supported by:

    Supported by the National Natural Science Foundation of China(No. 30660160)

摘要:

目的 确定2007-2009年从云南省澜沧江流域采集蚊虫中分离的13株流行性乙型脑炎病毒(JEV)基因型及其E基因序列特征。方法 用反转录-聚合酶链反应(RT-PCR)扩增E蛋白核苷酸序列,测序后用DNAStar软件包中的MegAlign程序完成核苷酸相似性和氨基酸同源性分析;用ClustalX1.83软件进行碱基配对后采用Mega5.0软件做进化树分析。结果 13株JEVE基因的核苷酸相似性为98.0%~100%,氨基酸的同源性为99.8%~100%,与我国乙脑减毒活疫苗株SA14-14-2的核苷酸相似性为86.1%~86.9%,氨基酸同源性为96.8%~97.2%;进化树分析发现,13株JEV均属于基因Ⅰ型。结论 2007-2009年从云南省澜沧江流域采集蚊虫中分离的13株病毒属于JEV基因Ⅰ型。

关键词: 澜沧江流域, 流行性乙型脑炎病毒, 基因Ⅰ型

Abstract:

Objective To analyze the genotypes and E gene sequence characteristics of 13 Japanese encephalitis virus(JEV) strains isolated from mosquitoes in Lancang River watershed in Yunnan province, China during 2007-2009. Methods E genes of 13 JEV strains were amplified by RT-PCR. The nucleotide similarity and amino acid homology were analyzed by MegAlign program in DNAStar software. Multiple sequence alignment and phylogenetic analysis were carried out using Clustal X 1.83 and the Mega 5.0. Results The nucleotide similarity and amino acid homology among the 13 JEV strains were 98.0%-100% and 99.8%-100% , respectively. Compared with the live attenuated vaccine strain (SA-14-14-2), the 13 JEV strains showed nucleotide similarity and amino acid homology of 86.1%-86.9% and 96.8%-97.2%, respectively. Phylogenetic analysis showed that the 13 JEV strains were genotypeⅠ. Conclusion The 13 JEV strains isolated from mosquitoes in Lancang River watershed in Yunnan province, China during 2007-2009 belonged to genotypeⅠ.

Key words: Lancang River watershed, Japanese encephalitis virus, GenotypeⅠ

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