畜牧兽医学报 ›› 2012, Vol. 43 ›› Issue (6): 915-921.

• 预防兽医 • 上一篇    下一篇

Clade2.3.2 H5N1亚型禽流感疫苗候选株的构建

张妍,张文俊,李群辉,刘晓文,刘文博,刘秀梵*   

  1. 扬州大学兽医学院 农业部畜禽传染病学重点开放实验室,扬州 225009
  • 收稿日期:2011-10-13 修回日期:1900-01-01 出版日期:2012-06-25 发布日期:2012-06-25
  • 通讯作者: 刘秀梵
  • 作者简介:张妍(1987-),女,汉,江苏常州人,硕士研究生,主要从事禽流感病毒分子生物学研究,E-mail:zhangyan811078@126.com
  • 基金资助:

    现代农业产业技术体系建设专项资金(nycytx-41-G07);国家重点基础研究发展计划(973计划)(2011CB505003)

Generation of Clade 2.3.2 H5N1 Subtype Avian Influenza Vaccine Candidate

ZHANG Yan, ZHANG Wen-jun,LI Qun-hui,LIU Xiao-wen, LIU Wen-bo, LIU Xiu-fan*   

  1. Key Laboratory of Animal Infectious Diseases of Ministry of Agriculture, Yangzhou University, Yangzhou 225009, China
  • Received:2011-10-13 Revised:1900-01-01 Online:2012-06-25 Published:2012-06-25
  • Contact: LIU Xiufan

摘要:

近年来Clade2.3.2 H5N1亚型的禽流感病毒逐渐成为我国及越南等其他一些国家流行的优势毒株,并呈现出一定变化规律的氨基酸进化趋势。本研究以A/Puerto Rico/8/34(H1N1) (PR8) AIV 为内部基因供体,以 Clade2.3.2 H5N1 亚型 AIV A/chicken /Yangzhou/1117/2011(YZC3)为表面抗原血凝素(HA)和神经氨酸酶(NA)基因供体,通过反向遗传操作,在符合人类疫苗生产标准的COS-1细胞中救获低致病性的疫苗毒株。结果成功拯救出1株重组病毒rYZC3,该病毒在鸡胚和MDCK细胞上均具有较好的繁殖能力,对SPF鸡和鸡胚无致病性。本研究为防控当代流行的H5亚型禽流感提供了良好的疫苗候选株。

关键词: H5亚型, Clade2.3.2, 禽流感病毒, 反向遗传

Abstract:

Currently, H5N1 viruses in Clade 2.3.2 are predominant viruses which prevail in China and other countries, and occurrence of a certain evolutionary trends of amino acid changes. In this report, a reassortant virus containing the HA and NA genes from an new isolate A/chicken /Yangzhou/1117/2011(YZC3) and the backbone A/Puerto Rico/8/34 (H1N1) (PR8) strain were constructed. The virus was rescued from the COS-1 cell line and prepared as inactivated wholevirus vaccine. Vaccine virus was avirulent to SPF chickens and embryonated chicken eggs, replicating well in eggs and MDCK cells. The results indicate that the reassortant viruses is suitable for vaccine manufacturing and being used as reference vaccine virus against the H5N1 Clade 2.3.2 viruses.

Key words: H5, Clade2.3.2, avian influenza virus, reverse genetics

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