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HER2胞外区基因的克隆及其在大肠杆菌中的可溶性表达
引用本文:刘阳,孙志伟,俞炜源,黄海华.HER2胞外区基因的克隆及其在大肠杆菌中的可溶性表达[J].生物技术通讯,2005,16(3):252-254.
作者姓名:刘阳  孙志伟  俞炜源  黄海华
作者单位:1. 军事医学科学院,生物工程研究所,北京,100071;沈阳药科大学,生物制药系,辽宁,沈阳,110016
2. 军事医学科学院,生物工程研究所,北京,100071
3. 沈阳药科大学,生物制药系,辽宁,沈阳,110016
摘    要:采用反转录PCR和PCR方法分别克隆P185^HER2/neu胞外区基因和噬菌体M13K07g3p—N1结构域基因,然后将二偶联入pET-22b( )载体中,在大肠杆菌中进行融合表达。可溶性目的蛋白表达量占细菌可溶性表达产物总量的30%72右.并通过镍亲和层析纯化出目的蛋白。以上结果为从噬菌体抗体库中筛选抗P185^HER2/neu的抗体奠定了基础。

关 键 词:大肠杆菌  胞外区  可溶性表达  基因  克隆  反转录PCR  噬菌体抗体库  目的蛋白  PCR方法  融合表达  层析纯化  表达产物  结构域  表达量  载体  细菌
文章编号:1009-0002(2005)03-0252-03
修稿时间:2004年12月13

Soluble Expression of Extracellular Region of HER2 in Escherichia coli
LIU Yang,SUN Zhi-wei,YU Wei-yuan,HUANG Hai-Hua.Soluble Expression of Extracellular Region of HER2 in Escherichia coli[J].Letters in Biotechnology,2005,16(3):252-254.
Authors:LIU Yang  SUN Zhi-wei  YU Wei-yuan  HUANG Hai-Hua
Institution:LIU Yang1,2,SUN Zhi-wei1,YU Wei-yuan1,HUANG Hai-hua2 1. Institute of Biotechnology,Academy of Military Medical Sciences,Beijing 100071, 2. Shenyang Pharmaceutical University,Shenyang 110016,China
Abstract:The extracellular region gene of human P185HER2/neu and the gene of g3p-N1 domain were amplified by RT-PCR and PCR from sk-br-3 cell and M13KO7 phage respectively. Fused to 3'-terminus of the gene of g3p-N1 domain, the extracellular region gene of human P185HER2/neu was high-efficiently expressed in host E.coli by vector pET-22b( ). The fusion protein attaining to the 30% of the total protein which could be soluble expressed in E.coli was conveniently purified by chelating column (HisTrap HP Columns). This research made the basis of screening anti-P185HER2/neu antibody from recombinant phage-display antibody library.
Keywords:HER2 gene  expression  Escherichia coli
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