›› 2008, Vol. 1 ›› Issue (4): 26-30.

• 生物技术 • 上一篇    下一篇

银狐生长激素cDNA克隆和原核表达

刘玉堂1,胡晓航1,3,闫丽辉2,曹殿军2,刘培欣
2,杨传平1
  

  1. 1.东北林业大学,哈尔滨 150040;2.中国农业科学院哈尔滨兽医研究所,哈尔滨 150001;3.黑龙江大学,哈尔滨 150080
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-04-20 发布日期:2008-04-20

Cloning and Prokaryotic Expression of Growth Hormone cDNA from Vulpes Vulpes

LIU Yu-tang1, HU Xiao-hang1,3, YAN Li-hui2
, CAO Dian-jun2,LIU Pei-xin2, YANG Chuan-ping1
  

  1. 1.Northeast Forestry University, Harbin 150040, China; 2.Harbin Veterinary Research Institute, CAAS, Harbin 150001, China;3.Heilongjiang University, Harbin 150080, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-04-20 Published:2008-04-20

摘要: 为了获得重组的银狐生长激素,本试验用Trizol的方法从银狐脑垂体组织中提取总RNA,以mRNA为模板,用RT-PCR方法扩增出生长激素成熟cDNA片段并克隆到载体质粒pMD18-T中;通过含有BamHⅠ酶切位点的特异引物从pMD18-T-fGH中亚克隆出cDNA片段,并将其重组到pPROEXTMHta质粒中,构建了银狐生长激素原核表达质粒pPROEXTMHta-fGH。将pPROEXTMHta-fGH原核表达质粒转化DH5α大肠杆菌,用终浓度1 mmol/L IPTG进行诱导,通过SDSPAGE进行检测。结果表明在转化的大肠杆菌中检测到分子量为26 kD的fGH蛋白的存在,表达量占菌体蛋白总量的35%,并且表达产物以包涵体的形式存在。

关键词: 银狐; 生长激素; 克隆; 原核表达

Abstract: To obtain the recombinant vulpes vulpes growth hormone. The mature vulpes vulpes growth hormone mRNA obtained from pituitary was amplified by RTPCR , cloned into vector pMD18-T and subcloned into prokaryotic expression vector pPROEXTMHta at restriction enzyme sites BamHⅠ and HindⅢ. The recombinant plasmids pMD18-TfGH cDNA and pPROEXTMHta-fGH cDNA were identified by restriction enzyme digestion, PCR and sequencing. Then we transfer positive recombinant prokaryotic plasmid into E.Coil, and the protein was expressed under the induction of IPTG at the final concentration of 1 mmol/L. The protein expression was measured by SDS-PAGE, and a high level of fGH protein was obvserved at 26 kD which occupied about 35% of total E.coil protein. The recombined fGH protein existed in the for
m of inclusion bodies.

Key words: vulpes vulpes; growth hormone; cloning; prokaryotic expression

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