遗传 ›› 2009, Vol. 31 ›› Issue (10): 993-998.doi: 10.3724/SP.J.1005.2009.00993

• 综述 • 上一篇    下一篇

泛素蛋白连接酶MDM2活性及稳定性调控的研究进展

聂晶1, 2;春艳2;令强2

  

  1. 1. 清华大学生物系, 北京100084;
    2. 军事医学科学院放射与辐射医学研究所, 蛋白质组学国家重点实验室, 北京100850

  • 收稿日期:2009-04-02 修回日期:2009-04-02 出版日期:2009-10-10 发布日期:2009-10-10
  • 通讯作者: 张令强

Progress in regulation of activity and stability of ubiquitin protein ligase MDM2

NIE Jing1,2;IAN Chun-Yan2;HANG Ling-Qiang2

  

  1. 1. Department of Biological Sciences and Technology, Tsinghua University, Beijing 100084, China; 2. State Key Laboratory of Proteomics, Beijing Institute of Radiation Medicine, Beijing 100850, China
  • Received:2009-04-02 Revised:2009-04-02 Online:2009-10-10 Published:2009-10-10
  • Contact: ZHANG Ling-Qiang

摘要:

泛素蛋白连接酶MDM2(Murine double minute 2)具有癌基因活性, MDM2高表达会导致抑癌基因p53失活而诱发肿瘤, 但在至少7%的肿瘤中p53基因正常而mdm2异常扩增, 表明MDM2还具有其他底物分子, 以p53不依赖的方式促进肿瘤的发生。鉴于MDM2的重要作用, 文章在基因水平、转录水平、翻译后修饰水平、相互作用分子的调节等方面系统总结了目前对MDM2调控的主要研究机制及其进展。

关键词: p53, MDM2, 癌基因, 翻译后修饰, 蛋白质相互作用

Abstract:

The ubiquitin protein ligase (E3) MDM2 (Murine double minute 2) possesses oncogenic activities. Overexpression of this protein enhances degradation and inactivation of the tumor suppressor p53. At least 7% of all human tumors exhibit inappropriate amplification of mdm2, whereas p53 gene remains in its wild-type configuration. This indicates that MDM2 may function in the p53-independent manner to promote tumorigenesis. Considering the critical role of MDM2, this review summarizes the current mechanisms and progress on MDM2 regulation in levels of gene control, mRNA transcription, post-translational modification, and interaction proteins.