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中华按蚊分离的版纳病毒全基因组序列测定与分子遗传进化分析

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  • 1 青岛大学公共卫生学院, 山东 青岛 266071;
    2 中国疾病预防控制中心病毒病预防控制所病毒性脑炎室, 传染病预防控制国家重点实验室, 北京 102206
程睿,女,硕士,主要从事虫媒病毒检测工作,Email:781623480@qq.com

收稿日期: 2018-07-20

  网络出版日期: 2018-12-20

基金资助

国家自然科学基金(81501757,81290342);生物安全关键技术研发重点专项(2016YFC1201904)

Genome sequencing and phylogenetic analysis of Banna virus (genus Seadornavirus, family Reoviridae) isolated from Anopheles sinensis

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  • 1 Qingdao University, Qingdao 266071, Shandong Province, China;
    2 Stay Key Laboratory of Communicable Disease Prevention and Control, National Institute for Communicable Disease Prevention and Control, Chinese Center for Disease Control and Prevention

Received date: 2018-07-20

  Online published: 2018-12-20

Supported by

Supported by the NationaI Natural Science Foundation of China (No. 81501757, 81290342) and the Special National Project on Research and Development of Key Biosafety Technologies (No. 2016YFC1201904)

摘要

目的 对分离自中华按蚊的版纳病毒进行病毒全基因组核苷酸序列测定和分子遗传学分析。方法 使用分子病毒学方法测定病毒全基因组12节段核苷酸序列,以生物信息学软件进行序列比对、同源性和分子遗传进化分析。结果 2012年从云南省中缅边境地区中华按蚊分离的版纳病毒(YN12234病毒株)能在C6/36细胞引起细胞病变并稳定传代,该病毒为12节段RNA病毒。根据病毒VP1蛋白(RdRp)氨基酸序列进行的分子遗传进化分析发现,YN12234病毒属于呼肠孤病毒科东南亚12节段RNA病毒属版纳病毒。对第12节段基因序列的进一步分析显示,YN12234病毒属于A2基因型版纳病毒。系统进化分析结果还显示,从中华按蚊分离的版纳病毒与此前从中华按蚊分离的版纳病毒处在不同进化分支,且不同蚊虫分离的版纳病毒并非聚类在共同的进化分支。结论 从中华按蚊分离的YN12234病毒株属于含有12节段的版纳病毒,分子进化分析结果提示包括云南省分离的YN12234病毒在内的目前国内外从蚊虫分离的版纳病毒并不存在病毒与蚊虫种类之间的媒介适应性。

本文引用格式

程睿, 付士红, 范娜, 何英, 雷雯雯, 王环宇, 王斌, 鲁晓晴, 梁国栋 . 中华按蚊分离的版纳病毒全基因组序列测定与分子遗传进化分析[J]. 中国媒介生物学及控制杂志, 2018 , 29(6) : 550 -556 . DOI: 10.11853/j.issn.1003.8280.2018.06.002

Abstract

Objective To determine the whole genome nucleotide sequence and carry out molecular genetic analysis of Banna virus (BAV) isolated from Anopheles sinensis. Methods The 12-segment nucleotide sequence of BAV was determined by molecular virological methods. Sequence alignment, homology, and molecular phylogenetic analysis were performed by using bioinformatics software. Results The BAV isolated from An. sinensis (YN12234 strain) caused cytopathic effect (CPE) and stable passage in C6/36 cells. The virus was composed of 12 segments of double-stranded RNA (dsRNA). Phylogenetic analysis of the viral VP1 protein (RdRp) amino acid sequence revealed that the YN12234 virus belongs to BAV of genus Seadornavirus of family Reoviridae. Further analysis of the 12th segment of the gene sequence revealed that the YN12234 virus belongs to the BAV genotype A2. The results of phylogenetic analysis also showed that the BAV isolated from An. sinensis in this study was in a different evolutionary branch from the BAV previously isolated from An. sinensis, and the BAV isolated from different mosquitoes was located in the different evolutionary cluster. Conclusion The YN12234 strain isolated from An. sinensis belongs to the BAV with 12 segments. The results of molecular evolution analysis suggest that vector adaptability between virus and mosquito species does not exist for the BAV isolated from the mosquitoes at home and abroad, including the YN12234 virus isolated in Yunnan province.

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