| 徐昌平,卢亦愚,严菊英,冯燕,茅海燕,李榛,陈寅,王舜侃,高筱萍.浙江省2002-2006年禽流感H5N1病毒基因特性与进化重组分析[J].中华流行病学杂志,2008,29(11):1114-1118 |
| 浙江省2002-2006年禽流感H5N1病毒基因特性与进化重组分析 |
| Molecular characteristics and its evolution of the complete genome of avian influenza H5N1 virus isolated in Zhejiang province from 2002 to 2006 |
| 收稿日期:2008-05-30 出版日期:2014-09-11 |
| DOI： |
| 中文关键词: 禽流感H5N1 基因特性 进化 重组 |
| 英文关键词: Avian influenza HSN1 Genetic characteristics Evolution Reassortment |
| 基金项目:浙江省科技攻关重点项目(2004C230001) |
|
| 摘要点击次数: 2884 |
| 全文下载次数: 1006 |
| 中文摘要: |
| 目的 对近年来浙江省禽流感病毒H5N1分离株的基因特性与进化重组特征进行分析.方法 通过对2002-2006年浙江省禽与人的H5N1病毒株进行全基因序列测定,采用Mega 3.0生物信息学软件分析病毒株基因特性并与相关基因型标准病毒株进行系统进化分析.结果 2002-2006年浙江省HSNl病毒株HA序列裂解位点序列含多个碱性氨基酸,符合高致病性禽流感病毒特征;与Gs/Guangdong/1/96相比,除Dk/Zhejiang/2/02和Ck/Zhejiang/8/03株外其他病毒株均在NA蛋白茎区缺失20个氨基酸.全基因系统进化分析表明,2002-2003年的分离株遗传基因基本属于当年流行的B、W、X、Y、z等基因型,但部分病毒株不同基因片段属于不同基因型.结论 浙江省禽类中也广泛存在H5N1的基因片段重组现象,2005年后的Ck/Zhejiang/24/05株及人H5N1 Zhejiang/16/06株各遗传基因基本上稳定于近年大陆流行的FJ-like基因型. |
| 英文摘要: |
| Objective To analyze the molecular characteristics and evolution reassortment of the complete genome of avian influenza H5N1 virus isolated in Zhejiang province in recent years. Methods Complete genomes of avian influenza H5N1 viruses isolated in Zhejiang province from 2002 to 2006 were sequenced. Molecular and evolution reassortment characterization of these virus strains were analyzed by Mega 3.0 bioinformatics software. Results Through study on the HA genes from all these strains,our data revealed that there were multiple basic amino acids at the cleavage site, which was typical for HPAIV.Compared with Gs/Guangdong/1/96,all these strains had a 20 amino acid deletion in the stalk of the NA, except for Dk/Zhejiang/2/02 and Ck/Zhejiang/8/03. Results from phylogenetic analysis showed that from2002 to 2003 the H5N1 viruses belonged to the genotype of B,W,X,Y,Z, and other genotypes were prevailed in corresponding year. However, different gene fragments of several strains belonged to different genotypes. Conclusion Recombinant might be widespread among the poultry in Zhejiang province. The genetic genes of viruses isolated after 2005, the Ck/Zhejiang/24/05 and Zhejiang/16/06 strains were almost all originated from the FJ-like genotype stably. |
|
查看全文
Html全文
查看/发表评论 下载PDF阅读器 |
|
| 关闭 |
|
|
|
