畜牧兽医学报 ›› 2014, Vol. 45 ›› Issue (6): 960-966.doi: 10.11843/j.issn.0366-6964.2014.06.014

• 预防兽医 • 上一篇    下一篇

组氨酸标签标记的口蹄疫重组病毒的制备及鉴定

杨波1,2,杨帆2,王松豪2,张岩2,岳城 1*,郑海学2*,殷宏2*   

  1. (1.新疆农业大学 动物医学学院,乌鲁木齐 830052;2.中国农业科学院兰州兽医研究所,家畜疫病病原生物学国家重点实验室,国家口蹄疫参考实验室,兰州 730046)
  • 收稿日期:2013-12-19 出版日期:2014-06-23 发布日期:2014-06-23
  • 通讯作者: 郑海学(1979-),副研究员,Tel:0931-8342086,E-mail:haixuezheng@163.com;岳城(1958-),教授, Tel:0991-8762752,E-mail:yuechengxnd@yahoo.com.cn;殷宏,研究员,E-mail:yinhong@caas.net.cn
  • 作者简介:杨波(1989-),男,汉族,甘肃天水人,硕士研究生,主要从事RNA病毒反向疫苗的研究, E-mail:yb4271@163.com
  • 基金资助:

    国家自然科学基金项目(31302118);甘肃省科技重大专项计划项目(1302NKDA027);国家863计划项目(2011AA10A211-1);中国农业产业体系(CARS-39)

Generation and Identification of a Histidine Tagged Recombinant Foot and Mouth Disease Virus

YANG Bo1,2,YANG Fan2,WANG Song-hao2,ZHANG Yan2,YUE Cheng 1*, ZHENG Hai-xue2*,YIN Hong2*   

  1. (1.College of Veterinary Medicine,Xinjiang Agricultural University, Urumqi 830052, China; 2.State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Disease Reference Laboratory,Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China)
  • Received:2013-12-19 Online:2014-06-23 Published:2014-06-23

摘要:

为了鉴定口蹄疫病毒(FMDV)插入位点并获得标记的重组病毒,本研究利用口蹄疫病毒反向遗传操作技术,在RGD基序后第9位和第10位氨基酸处(+9)引入组氨酸(His)标签,获得了含有His标签的FMDV全长cDNA克隆(命名为prAsia1-9His)。将prAsia1-9His质粒转染BHK-21细胞后,能够出现典型的细胞病变,对收获的病毒分别用RT-PCR、间接免疫荧光进行鉴定,结果证实,成功拯救了含His标签的重组病毒(命名为rAsia1-9His),该重组毒株能够稳定表达His标签。最后,比较测定了其对BHK-21细胞和乳鼠的致病性,结果表明,该重组毒株与亲本毒株(rAsia1)具有相似的生物学特性。含有标签标记的口蹄疫病毒的成功拯救,为深入研究口蹄疫病毒的致病机制以及分子标记疫苗奠定了基础。

Abstract:

To identify a feasible insertion site in the foot-and-mouth disease virus (FMDV) and obtain a tagged recombinant virus,in this study,we have used reverse genetics to introduce a histidine (His)tag into the ninth site in the downstream of RGD motif in FMDV and obtain His tagged full-length-cDNA clone, named prAsia1-9His.We transfected the prAsia1-9His into BHK-21 cells and typical cytopathic effect (CPE) were found in the transfacted BHK-21 cells.Then,RT-PCR,indirect immunofluorescence assay and sequence analysis were performed,the results showed that the recombinant virus named as rAsia1-9His was successfully rescued and the His tag was stably maintained.Finally,we compared rAsia1-9His with the parental virus (named rAsia1) for pathogenicity to BHK-21 cells and suckling mouse,the results showed that they had similarity in the biological characteristics.The successful rescue of tagged FMDV lays a foundation for further study of molecular pathogenesis and marker vaccine of FMDV.

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