›› 2011, Vol. 38 ›› Issue (8): 85-89.

• 生物技术 • 上一篇    下一篇

2008-2009年部分地区新城疫病毒分离株的进化分析

尤永君1,2, 王延树1, 梁武1, 杨保收1, 李建丽1, 邹立宏1, 王和平1, 乔健2   

  1. 1. 瑞普(保定)生物药业有限公司,河北保定 071000;2. 中国农业大学动物医学院,北京 100193
  • 收稿日期:2010-12-14 修回日期:1900-01-01 出版日期:2011-08-20 发布日期:2011-08-20

Sequence and Analyses on Newcastle Disease Virus from 2008 to 2009

YOU Yong-jun1,2, WANG Yan-shu1, LIANG Wu1, YANG Bao-shou1, LI Jian-li1, ZOU Li-hong1, WANG He-ping1, QIAO Jian2   

  1. 1. Ringpu (Baoding) Bio-Pharmaceutical Co.,Ltd.,Baoding 071000,China;2. College of Veterinary Medicine,China Agricultural University,Beijing 100193,China
  • Received:2010-12-14 Revised:1900-01-01 Online:2011-08-20 Published:2011-08-20

摘要: 本研究旨在从分子水平上掌握中国新城疫病毒的变异情况和新城疫的流行规律,对2008-2009年从中国部分省市养殖场分离的9株新城疫病毒毒株,采用RT-PCR方法扩增其F和HN基因,经克隆和测序,对所得序列进行同源性和遗传进化分析。结果显示,9株分离株有8株为基因Ⅶ型,1株为基因Ⅱ型,F基因开放性阅读框架(ORF)为1662 bp,强毒株同La Sota的核苷酸同源性为83.5%~84.2%。HN基因开放性阅读框架(ORF)为1716或1734 bp,强毒株在538位缺失1个糖基化位点。结果表明,近年流行的ND疫情主要是由基因Ⅶ型NDV引起,F和HN基因的变异可能与频繁的疫苗免疫选择压力有关。

关键词: 新城疫病毒; F基因; HN基因; 序列分析; 基因型

Abstract: In order to explore the genetic mutations of the F gene and HN gene and the law of molecular epidemiology of Newcastle disease virus in China,nine influenza virus NDV were isolated from some poultry yards in China,the whole F and HN cDNA fragments of them were amplified by reverse transcription polymerase chain reaction,with primers specific to F gene and HN gene.After cloning and sequecing,gene sequences were analyzed on homology and heredity evolution.The sequence analysis showed 8 NDV isolates belonged to genotype Ⅶ,and 1 NDV isolates belonged to genotype Ⅱ.The F gene of NDV isolates had a 1662 bp open reading fragment (ORF) and the homology of the nucleotide of F gene is from 83.5% to 84.2%. The HN gene of NDV isolates had 1716 or 1734 bp.The glycosylation site of HN in virulent virus strains absence on 538 aa.The results revealed that Ⅶ genotype was the main genotype of NDV occurred in China now,variation of F gene and HN gene might be related to frequent vaccine selection pressure.

Key words: Newcastle disease virus (NDV); F gene; HN gene; sequence analysis; genotype

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