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一株急性散发性戊型肝炎病毒基因结构及核苷酸同源性分析

刘子玲1,迟宝荣2*,高桥和明3,三代俊治3   

  1. 1. 吉林大学第一医院血液科,吉林 长春130021;2. 吉林大学第一医院消化内科,吉林 长春 130021;3.日本东芝病院肝病研究所,日本 东京 〒140-8522
  • 收稿日期:2005-06-23 修回日期:1900-01-01 出版日期:2006-11-28 发布日期:2006-11-28
  • 通讯作者: 迟宝荣

Analysis of HEV genetic structure and nucleotide homology isolated from  sporadic acute hepatitis E in Changchun

LIU Zi-ling1, CHI Bao-rong2*,KAZUAKI Takahashi3,SHUNJI Mishiro3   

  1. 1.Department of Hematology,First Hospital,Jilin University,Changchun 130021,China; 2.Department of Digestive Medicine,First Hospital,Jilin University,Changchun 130021,China;  3.Institutes of Hepatic Disease,Toshiba General Hospital,Tokyo 〒140-8522,Japan
  • Received:2005-06-23 Revised:1900-01-01 Online:2006-11-28 Published:2006-11-28
  • Contact: CHI Bao-rong

摘要: 目的:分析一株长春地区散发戊型肝炎病毒(HEV)的基因结构和核苷酸同源性。方法:采用RT-nPCR方法检测HEV RNA,应用全自动测序仪进行序列测定。结果:所获得的HEV-CCC220全长7 193bp,编码2 397个氨基酸,由5′-UTR(nt 1-9)、3′-UTR(nt 7152-7193)和3个开放读码框架(ORFs)组成。与HEV Ⅳ型核苷酸同源性明显高于HEVⅠ~Ⅲ型,全基因序列核苷酸同源性为83.2 %~85.0%;与ORF2间300 nt和98 nt部分基因序列核苷酸同源性分别为85.0%~93.9%和80.6%~86.7%。结论:长春地区散发性HEV-CCC220属HEV Ⅳ型,ORF2间300nt部分核苷酸序列可以代替全基因序列进行HEV基因型分析。

关键词: 戊型, 基因, 结构, 病毒, 序列同源性, 核酸, 序列分析

Abstract: Objective To analyze the HEV genetic structure and nucleotide homology isolated from sporadic acute hepatitis E in Changchun.Methods HEV RNA was detected with reverse transcription nested polymerase (RT-nPCR) and sequenced by automatic sequenator. Results The length of acquisitive HEV-CCC220 was 7193 bp coding 2397 amino acid . The gene of HEV-CCC220 was composed of 5’-UTR(nt 1-9),3’- UTR(nt 7152-7193) and three open reading frames(ORFs). Its homology with HEV IV was obviously higher than that with HEV I-III. The whole genome sequence nucleotide homology was 83.2%-85.0%,85.0%-93.9% and80.6%-86.7% as compared with 300nt and 98nt partial nucleotide sequence of ORF2.The homology comparison of various areas and various lengths of nucleotide was different. Conclusion The HEV-ccc220,which sporadically happened in Changchun,is the subtype IV of HEV.The 300nt of ORF2 can replace the whole gene order to perform genotype analysis of HEV.

Key words: genetic, structure, viral, sequence homology, nucleic acid, sequence analysis

中图分类号: 

  • R373.2