食品科学

• 生物工程 • 上一篇    下一篇

骨形态发生蛋白-2的高效表达、纯化和复性

杨春瑜1,杨春莉2,刘晓飞1,赫 美1   

  1. 1.黑龙江省普通高校食品科学与工程省重点实验室,哈尔滨商业大学食品工程学院,黑龙江 哈尔滨 150076;
    2.哈尔滨商业大学轻工学院,黑龙江 哈尔滨 150028
  • 出版日期:2013-08-15 发布日期:2013-09-03
  • 通讯作者: 杨春瑜
  • 基金资助:

    黑龙江省普通高校青年骨干支持计划项目(1155G24)

Optimal Expression, Purification and Renaturation of BMP-2 in E.coli BL 21(DE3)

YANG Chun-yu 1,YANG Chun-li2,LIU Xiao-fei1,HE Mei1   

  1. 1. Key Laboratory of Food Science and Engineering of Heilongjiang Province, College of Food Engineering, Harbin University of
    Commerce, Harbin 150076, China; 2. College of Light Industry, Harbin University of Commerce, Harbin 150028, China
  • Online:2013-08-15 Published:2013-09-03
  • Contact: YANG Chun-yu

摘要:

从含BMP-2cDNA质粒的E.coli中获得骨形态发生蛋白-2(BMP-2)的目的基因,构建质粒pET28a-BMP-2并转入BL 21(DE3) E.coli中,经酶切鉴定,证明BMP-2在BL 21(DE3) E.coli中成功诱导表达。摸索高效表达条件后,对BMP-2进行纯化和复性,得到具有较高生物活性的BMP-2。采用低成本方法解决骨修复材料和BMP-2缓释研究中大量价格昂贵的BMP-2需求问题。

关键词: BMP-2, 诱导表达, pET-28 a(+), 纯化, 复性

Abstract:

The plasmid pET28a-BMP-2 based on the target gene of bone morphogenetic protein-2 (BMP-2) from E.coli
harboring plasmid BMP-2cDNA was transformed into E.coli BL 21(DE3). The successful expression of BMP-2 in E.coli BL
21(DE3) was identified by enzymatic digestion. Under optimized expression conditions, BMP-2 was purified and renaturated
to obtain enhanced bioactivity. This study provides a cost-effective way of producing BMP-2, which is expensive and
needed in large quantities in bone repair materials and investigation of its sustained release capacity.

Key words: bone morphogenetic protein -2, inducement expression, pet-28 a(+), purification, renaturation

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