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时间:2017-12-07
《3株肠道病毒71型毒株的全基因组序列分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、生物822LETTERSINBIQ!垦丝遗Q::兰::!:!::::::研究报告doi:10,3969~.issn.1009-0002.2013.06.0163株肠道病毒71型毒株的全基因组序列分析刘颖,樊红艳,赵兴卉,张晓鹏,于蕊,吴诗坡,张哲,付玲,侯利华军事医学科学院生物工程研究所,北京100071[摘要]目的:对获得的3株肠道病毒71(EV71)型毒株进行全基因组序列测定,并对其进化特点及分型进行初步分析。方法:提取病毒RNA,反转录得到cDNA,PCR分段扩增覆盖病毒全长序列的6个重叠片段(不包括多聚腺苷酸尾):用软件将3株EV71的备片段序列进行拼接、编辑
2、和校正,随后进行氨基酸翻译及序列比较;用MEGA4.1软件构建系统进化树。结果:获得了3株EV71的全长序列:GDV103株基因组全长7404nt,包括741bp的5端非编码区(UTR)、6582bD的病毒基因组编码区(err)及81bp的3"UTR;安徽株(Anhui2007)基因组全长7405nt,包括742bp的5"UTR、6582bp的ORF及8lbp的3"UTR;VR1432株基因组全长7408nt,包括743bp的5"UTR、6582bp的eRr及83bp的3"UTR长。经同源性比对和进化树分析,证实GDV103和安徽株EV71属于C基因型的C4基因亚型,
3、而VR1432株则属于C基因型的C2基因亚型。结论:获得了3株EV71的全长基因组序列,并进一步探讨了其型别,为下一步的干扰素保护实验奠定了基础。[关键词]肠道病毒71型;全基因组;序列分析[中图分类号】Q78[文献标识码】A[文章编号]1009—0002(2013)06—0822—03CompleteGenomicAnalysisofThreeEnterovirus71StrainsLIUYing,FANHong-Yan,ZHAOXing—Hui,ZHANGXiao—Peng,YURui,UShi—Po,ZHANGZhe,FULing,HOULi-HuaBeijin
4、gInstituteofBiotechnology,Beijing100071,ChinaCorrespondingauthor.E-mail:houlihua@sina.coll[Abstract]Objective:Toanalyzethecompletegenomesofthreeenterovirus71(EV71)strainsandtheirsub-gen—otype.Methods:Sixoverlappingfragmentscoveringtherespectivewholeviralgenome(excludingthepolyAtail)were
5、amplifiedbyRT-PCR.ThesixDNAfragmentsequenceswerespliced,editedandrevised~llowedbytransla—tionandsequencecomparison.ThephylogenetictreewasbuiltusingtheMEGA4.1software.Results:Thefullge—nomiclengthofGDV103(7404bp)wascomprisedof5"UTR(741bp).theopenreadingframe(ORF)6582bpand3"UTR81bp.Theful
6、lgenomiclengthofAnhui2007strain(7405bp)WHScomprisedof5"UTR(742bp).theORF(6582bp)and3"UTR(81bp1.ThefullgenomiclengthofVR1432(7408bp)wascomprisedof5"UTR(743bp).theeRr(6582bp)and3"UTR(83bp).ThephylogeneticanalysisbasedonthecompletesequencesshowedthatGDV103andAnhuistrainwereclassifiedintoC4
7、sub—genotypeandVR1432intoC2sub—genotype.Conclu-sion:ThreecompletegenomesofEV71strainswereobtainedandthegenotypewasexplored,whichwillfacilitatethenextinterferonprotectionexperiments.[Keywords]enterovirus7l;completegenome;sequenceanalysis肠道病毒7l型(enterovirus71,EV71)是小核糖亚州一例神经系统疾病患
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