中国畜牧兽医

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猪去乙酰化酶SIRT3的克隆及表达

王候光1,马苗鹏2,黄魁英3,李华周1,明飞平3,王伟芳1,夏枫耿3,罗梦晓2,杨军2,蔡海明2,施巨清2,黄朝远2,楚品品2,董建明1,朱红霞1,张玲华2   

  1.  (1.广州市良种猪场,广东广州  5105402.华南农业大学生命科学学院,广东省农业生物蛋白质功能与调控重点实验室,广东广州  5106423.广州市微生物研究所,广东广州  510663

  • 修回日期:2013-12-20 出版日期:2014-05-20 发布日期:2014-06-25
  • 通讯作者: 张玲华(1973—),女,浙江人,博士,教授,博士生导师,研究方向:微生物育种和分子免疫学。E-mail:lhzhang@scau.edu.cn;Tel:020-85281389
  • 作者简介:王候光(1978—),男,广东人,学士,助理兽医师,研究方向:猪场兽医技术。
  • 基金资助:

    广州市科技攻关项目(201300000040);广州市科技攻关项目(2014Z1)。

Cloning and Expression of Sus scrofa Sirtuin 3

WANG Hou-guang1, MA Miao-peng2, HUANG Kui-ying3, LI Hua-zhou1, MING Fei-ping3, WANG Wei-fang1, XIA Feng-geng3, LUO Meng-xiao2, YANG Jun2, CAI Hai-ming2, SHI Ju-qing2, HUANG Chao-yuan2, CHU Pin-pin2, DONG Jian-ming1,ZHU Hong-xia1,ZHANG Ling-hua2   

  1. (1. Guangzhou Fine Breed Swine Farm, Guangzhou 510540, China; 2. Key Laboratory of Function and Regulation of Agricultural Biotechnology Protein of Guangdong Province, College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; 3. Guangzhou Institute of Microbiology, Guangzhou 510663, China)

  • Revised:2013-12-20 Online:2014-05-20 Published:2014-06-25

摘要: 本试验旨在原核表达猪去乙酰化酶SIRT3,并初步鉴定重组蛋白的抗原性和特异性。采用RT-PCR扩增包含SIRT3的完整编码序列;通过Ω-PCR,将SIRT3完整编码序列克隆至原核表达载体pET-28a(+)中,转入大肠杆菌Rosetta(DE3)中进行诱导表达和亲和层析纯化;经免疫印迹分析初步评价SIRT3的抗原性和特异性。重组原核表达质粒pET28a-SIRT3经双酶切及测序鉴定证明构建正确,表达的重组蛋白相对分子质量约39 ku,能被相关抗体识别。结果表明,本试验成功在大肠杆菌中表达猪去乙酰化酶SIRT3,为对其进行进一步研究奠定了基础。

关键词: 猪; SIRT3; 原核表达

Abstract: The study was aimed to obtain recombinant Sus scrofa sirtuin 3 (SIRT3) in prokaryotic system and preliminarily evaluate its antigenicity and specificity. The fragment which included the SIRT3 complete coding sequence was obtained by RT-PCR and cloned into pET-28a(+) vector, then the recombinant vector was transformed into E.coil Rosetta (DE3) to induce, express and purify, the antigenicity of recombinant SIRT3 was identified by Western blotting. The double enzyme analysis and sequencing proved that recombinant plasmid pET28a-SIRT3 was constructed correctly. The expressed recombinant protein, with a relative molecular mass of about 39 ku, was recognized by positive serum antibody. The result showed that the SIRT3 was successfully expressed in E.coil, which would provide a useful tool for designing an in-depth investigation of the role of SIRT3.

Key words:

Sus scrofa; SIRT3; prokaryotic expression