J4 ›› 2011, Vol. 37 ›› Issue (2): 226-230.

• 基础研究 • 上一篇    下一篇

SCIRR 10截短体真核表达载体的构建及其在COS-7细胞中的表达

蔺宇|刘少君   

  1. 军事医学科学院基础医学研究所一室,北京 100850
  • 收稿日期:2010-09-19 出版日期:2011-03-28 发布日期:2011-03-28
  • 通讯作者: 刘少君(Tel:010-66931104,E-mail:liusj@nic.bmi.ac.cn) E-mail:liusj@nic.bmi.ac.cn
  • 作者简介: 蔺 宇(1978-),男,辽宁省辽阳市人,在读医学博士|主要从事脊髓神经损伤修复方面的研究。
  • 基金资助:

    国家863项目资助课题(2007AA02Z183)

Construction of three truncated SCIRR 10 protein eukaryotic expression vectors and their expressions in COS-7 cells

LIN Yu,LIU Shao-jun   

  1. First Department,Institute of Basic Medical Sciences,Academy of Military Medical Sciences,Beijing 100850|China
  • Received:2010-09-19 Online:2011-03-28 Published:2011-03-28

摘要:

目的:构建SCIRR 10蛋白3个截短体的哺乳动物细胞表达系统,探讨SCIRR 10蛋白的功能位点。方法: PCR扩增出SCIRR 10蛋白的3个功能截短体表达DNA序列,构建3种真核表达质粒载体pcDNA3.1/Myc-His-SCIRR 10(1-145aa)、pcDNA3.1/Myc-His-SCIRR 10(1-90aa)和pcDNA3.1/Myc-His-SCIRR 10(1-70aa)。将3个表达载体质粒转染到COS-7细胞中,应用Western blotting 方法检测3个蛋白截短体的表达情况。结果:3个被截短的SCIRR 10蛋白相对分子质量分别为18 800、12 800和10 700。在COS-7细胞中可以成功表达3个SCIRR 10蛋白截短体。相对3个SCIRR 10截短体蛋白的表达量,β-tubulin蛋白无明显变化。结论:成功构建SCIRR 10蛋白3个截短体的哺乳动物细胞表达系统,通过此系统获得有生物活性的3个SCIRR 10截短体蛋白。

关键词: 脊髓损伤修复相关10号基因;截短;构建;蛋白表达

Abstract:

Abstract:Objective To construct three truncated SCIRR 10 protein mammalian cells systems,and discuss the protein function sites of SCIRR 10. Methods Three truncated SCIRR 10 genes were amplified by PCR,and three kinds of recombinant eukaryotic expression vectors were constructed as follows:pcDNA3.1/Myc-His-SCIRR 10(1-145aa),pcDNA3.1/ Myc-His- SCIRR 10(1-90aa) and  pcDNA3.1/Myc-His-SCIRR 10(1-70aa). Then they were transiently transfercted intoCOS-7 cells at the same time. After 48 h,the recombinant proteins were detected by Western blotting. Results The molecular weights of  three truncated SCIRR 10 proteins  were    18 800,12 800 and  10 700.Three SCIRR 10 truncated proteins were  successfully expressed in COS-7 cells.β-tubulin protein had no change. Conclusion The three truncated SCIRR 10 protein mammalian cell systems are constructed successfully,and the proteins are obtained by this system.

Key words: spinal cord injury and regeneration related gene No10;truncation;construction;protein expression

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