›› 2011, Vol. 38 ›› Issue (8): 89-92.

• 生物技术 • 上一篇    下一篇

新城疫病毒HN基因功能结构域的原核表达

俞宁1, 张兆敏2,3, 岳华2,4   

  1. 1. 成都农业科技职业学院,四川成都 611130;2. 西南民族大学生命科学与技术学院,四川成都 610041;3. 高密市畜牧局,山东潍坊 261500;4. 动物医学四川省高等院校重点建设实验室,四川成都 610041
  • 收稿日期:2010-12-19 修回日期:1900-01-01 出版日期:2011-08-20 发布日期:2011-08-20
  • 通讯作者: 岳华

Prokaryotic Expression of Function Domain of the Newcastle Disease Virus HN Gene

YU Ning1, ZHANG Zhao-min2,3, YUE Hua2,4   

  1. 1. Chengdu Vocational College of Agricultural Science and Technology,Chengdu 611130,China;2. College of Life Science and Technology,Southwest University for Nationalities, Chengdu 610041,China;3. Animal Husbandry Bureau of Gaomi,Weifang 261500,China;4. Veterinary Medicine of Sichuan Province Key Laboratory for Colleges and Universities,Chengdu 610041,China
  • Received:2010-12-19 Revised:1900-01-01 Online:2011-08-20 Published:2011-08-20

摘要: 本研究对新城疫病毒(Newcastle disease virus,NDV)分离株sc05的HN基因进行了克隆、序列测定,在此基础上将其C端功能结构域76-571 aa片段亚克隆到pET32a(+)表达载体上,构建重组表达质粒pET32a-HN,鉴定正确后转化进BL21 plysS(DE3)细胞,筛选出阳性克隆,用1 mmol/L IPTG 诱导表达,并对表达产物进行鉴定。SDS-PAGE电泳结果显示,HN基因功能结构域片段在 BL21 plysS(DE3)细胞中实现融合表达,表达产物大小约为76 ku,Western blotting试验证实其能与NDV阳性血清反应。本研究为进一步研究HN蛋白功能结构域的免疫原性和研制鸡新城疫HN基因工程疫苗奠定了基础。

关键词: NDV; HN基因; 克隆; 功能结构域; 原核表达

Abstract: In this study,HN gene of Newcastle disease virus(NDV) isolate sc05 was cloned,sequenced,on this basis,the 76 to 571 aa fragment of C-terminal function domain was subcloned into pET32a(+) expression vector,obtained recombinant expression plasmid pET32a-HN. pET32a-HN was identificated to be correct, and it was transfored into BL21 plysS(DE3) cells. Selected positive clones, induced expression by 1 mmol/L IPTG, and the expression products were identified. SDS-PAGE electrophoresis showed that HN gene function domain fragments in BL21 plysS(DE3) cells achieved fusion expression, size of the recombinant protein was about 76 ku, Western blotting confirmed the biological activity of recombinant protein. This work was benefit for further study of the functional domains of the HN protein immunogenicity and the development of the HN gene of Newcastle disease vaccine project.

Key words: NDV; HN gene; clone; function domain; prokaryotic expression

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