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Cloning,Expression and Biological Activity Analysis of Rat GFRα1 Gene
Author(s): 
Pages: 771-775
Year: Issue:  5
Journal: PROGRESS IN BIOCHEMISTRY AND BIOPHYSICS

Keyword:  胶质细胞源性神经营养因子受体α1(GFRα1)RT-PCR基因表达PC12细胞;
Abstract: 为了获得重组胶质细胞源性神经营养因子受体α1(glial cell line-derived neurotrophic factor receptor alpha1, GFRα1)并研究其生物学活性,从新生4天的SD大鼠海马组织中提取总RNA,通过 RT-PCR方法,扩增出GFRα1 cDNA.将GFRα1 cDNA克隆至含T7启动子的质粒pET-28a(+)中,构建表达质粒pET-GFRα1,转化大肠杆菌BL21(DE3),获得表达菌株BLGFRα1.表达菌株经1 mmol/L IPTG诱导3~5 h后,GFRα1蛋白表达,并形成包涵体.凝胶自动扫描分析表明,GFRα1表达量占全菌总蛋白的21.5%,用Ni2+-NTA树脂纯化和复性后,纯度达90%以上,复性的重组GFRα1蛋白可显著介导GDNF促PC12细胞的存活和分化作用.
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