›› 2010, Vol. 37 ›› Issue (4): 88-90.

• 生物技术 • 上一篇    下一篇

番鸭细小病毒NS2原核表达载体的构建

阮二垒1,杨丽云3,陈芳艳2,陈瑞爱1,王林川1,3   

  1. (1.广东大华农动物保健品股份有限公司, 新兴 527400;2.华南农业大学动物科学学院, 广州 510642; 3.华南农业大学兽医学院, 广州 510642)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-04-20 发布日期:2010-04-20
  • 通讯作者: 王林川

Construction of Protokaryotic Expressing Vector Containing NS2 of Muscovy Duck Parvovirus

RUAN Er-lei1,YANG Li-yun3, CHEN Fang-yan2,CHEN Rui-ai1,WANG Lin-chuan1,3   

  1. (1.Guangdong Dahuanong Animal Health Products Co. Ltd, Xinxing 527400, China;2.College of Animal Science, South China Agricultural University, Guangzhou 510642, China;3.College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-04-20 Published:2010-04-20
  • Contact: WANG Lin-chuan

摘要: 根据已发表的番鸭细小病毒(MDPV)核苷酸序列设计并合成1对引物,对MDPV非结构蛋白NS2基因进行扩增。所获得的PCR产物与预期片段大小相符,约1.4 kb。将该片段直接与pMD18-T载体连接,转化入感受态大肠杆菌DH5α中增殖。在对所提质粒进行快速鉴定、PCR扩增及BamH I酶切线性化初步鉴定的基础上,经限制性内切酶BamH I和Sal I进行双酶切鉴定。将克隆产物pMD18-T-NS2与原核表达载体pET-32a分别用BamH I和SalI双酶切后,回收目的片段进行定向连接,并转化入感受态大肠杆菌DH5α中。对所获得的重组质粒分别经BamH I单酶切、BamH I和Sal I双酶切,证实含有目的基因,且基因插入方向正确,成功构建了含有MDPV NS2非结构蛋白基因的原核表达载体,为高效原核表达及研制更为有效的基因工程疫苗打下了基础。

关键词: 番鸭细小病毒; NS2基因; 原核表达; 载体构建

Abstract: In this study, a pair of primers were designed according to the published DNA sequence of MDPV and was used to amplify the NS2 gene of MDPV by polymerase chain reaction(PCR). The PCR product was then cloned into the vector pMD18-T. In order to construct a prokaryotic expression vector containing the NS2 gene of MDPV, double digestion(BamH I and Sal I)were performed to deal with pMD18-T and pET-32a respectively for the directional ligation of the two fragments. The following restriction endonuclease analysis has proved the correctness of the expression vector. Construction of the prokaryotic expression vector has laid the foundation of the expression of NS2 protein and the development genetically engineering vaccine.

Key words: MDPV; NS2 gene; prokaryotic expression; vector construction

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