生物技术通报 ›› 2016, Vol. 32 ›› Issue (5): 140-145.doi: 10.13560/j.cnki.biotech.bull.1985.2016.05.018

• 研究报告 • 上一篇    下一篇

猪圆环病毒衣壳蛋白在枯草芽孢杆菌中的表达研究

陈灵艳1, 陈先进2, 蒋烨1, 吕暾1   

  1. 1. 福州大学生物科学与工程学院,福州 350108;
    2. 福州大北农生物科技有限公司,福州 350014
  • 收稿日期:2015-08-03 出版日期:2016-05-25 发布日期:2016-05-27
  • 作者简介:陈灵艳,女,硕士研究生,研究方向:生物化学与分子生物学;E-mail:871804232@qq.com
  • 基金资助:
    2013年福建省产学研重大专项(2012G106)

Research on the Expression of Porcine Circovirus Capsid Protein in the Bacillus subtilis

CHEN Ling-yan1,CHEN Xian-jin2,JIANG Ye1,Lü Tun1   

  1. 1. College of Biology Science and Technology,Fuzhou University,Fuzhou 350108;
    2. Fuzhou Dabeinong Biotech Co.,Ltd. Fuzhou 350014
  • Received:2015-08-03 Published:2016-05-25 Online:2016-05-27

摘要: 研究猪圆病毒衣壳蛋白在枯草芽孢杆菌中的表达情况。以3个不同的质粒为基础,构建不同类型的猪圆环病毒衣壳蛋白基因(PCV2-ORF2)重组表达载体,并分别转化进入枯草芽孢杆菌168和WB800中。利用SDS-PAGE和Western blot检测目的蛋白的表达,并通过实时荧光定量PCR检测目的基因的转录水平上的表达情况。结果显示,ORF2基因原序列在枯草芽孢杆菌中难以表达,经过密码子优化后,构建的截短ORF2基因表达载体在枯草芽孢杆菌内表达系统中成功表达目的蛋白。密码子优化促进了目的基因的表达。

关键词: 猪圆环病毒衣壳蛋白, 枯草芽孢杆菌, 实时定量PCR, 密码子优化

Abstract: The objective is to study the expression of porcine circovirus capsid protein in the Bacillus subtilis. Based on 3 different plasmids,different types of recombinant vectors for porcine circovirus capsid protein gene(PCV2-ORF2)were constructed,and they were transformed into strain 168 and WB800 of B. subtilis. The expression of the target protein was detected by SDS-PAGE and Western blot,and the mRNA expression of the target gene in B. subtilis was detected through RT-qPCR. The original ORF2 was difficult to be translated in B. subtilis expression system. After the codon optimization,truncated ORF2 gene was successfully expressed as target protein in intracellular expression system of B. subtilis. Thus,the optimization of the codons promoted the expression of the target gene.

Key words: porcine circovirus capsid protein, Bacillus subtilis, RT-qPCR, codon optimization.