南方医科大学学报 ›› 2004, Vol. 24 ›› Issue (04): 404-407.

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一株鸭乙型肝炎病毒DHBV全基因的克隆和序列分析

梁蔚芳, 刘志华, 何海棠, 骆抗先   

  1. 第一军医大学南方医院感染内科, 广东, 广州, 510515
  • 出版日期:2004-04-20 发布日期:2004-04-20
  • 基金资助:
    收稿日期:2003-10-26。
    基金项目:军队“十五”重点课题(01Z046)
    作者简介:梁蔚芳(1975-),女,广西北海人,第一军医大学在读硕士,研究实习员,电话:020-61641888-87314

Cloning and sequence analysis of the genome of a strain of duck hepatitis B virus

LIANG Wei-fang, LIU Zhi-hua, HE Hai-tang, LUO Kang-xian   

  1. 第一军医大学南方医院感染内科, 广东, 广州, 510515
  • Online:2004-04-20 Published:2004-04-20

摘要: 目的 从本地樱桃谷鸭血清中克隆鸭乙型肝炎病毒(DHBV)DNA,并进行序列分析。方法 用PCR扩增DHBV全基因,连接至T载体上,挑选克隆进行测序分析,与GenBank中16株DHBV全基因组进行同源性比较,并进行分子进化树分析。结果 24-18与16株DHBV基因组比较,核苷酸同源性介于89.4%~99.3%之间,各开放阅读框氨基酸同源性比较显示差异显著地方位于P区。结论 24-18属于DHBV西方基因型中的一个亚型。

Abstract: Objective To clone and analyze the genome of a duck hepatitis B virus (DHBV) strain isolated from the ducks found in the local area. Methods The complete genome of DHBV was amplified by PCR prior to cloning into T vector and sequencing, with also homology and phylogenetic analyses. Result Genome comparison of an isolated DHBV strain and 16 DHBV strains in GenBank revealed a homology of 89.4% to 99.3% at the nucleotide level, and the amino acid identity of the 3 open reading frames showed that the P region harbored more obvious variations than the other regions. Conclusion The isolated DHBV strain might belong to a subtype of the virus found in the western countries.

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