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肿瘤抑制因子Caliban相互作用蛋白的筛选和验证

  • 王喆 ,
  • 张洁 ,
  • 赵宇亮 ,
  • 秘晓林
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  • 1. 中国科学院研究生院材料与光电技术学院, 北京 100049;
    2. 中国科学院高能物理研究所, 北京 100049

收稿日期: 2010-06-07

  修回日期: 2010-09-28

  网络出版日期: 2011-07-15

基金资助

国家自然科学基金(30871388)资助 

Identification and functional study of tumor suppressor Caliban interacting proteins

  • WANG Zhe ,
  • ZHANG Jie ,
  • ZHAO Yu-Liang ,
  • BI Xiao-Lin
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  • 1. College of Materials Science and Opto-Electronic Technology, Graduate University, Chinese Academy of Sciences, Beijing 100049, China;
    2. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Received date: 2010-06-07

  Revised date: 2010-09-28

  Online published: 2011-07-15

摘要

为了研究Caliban的肿瘤抑制机制,通过酵母双杂交的方法筛选得到了4个新的Caliban相互作用蛋白:Bip2、Uba2、RpS27A和CG7182.它们的功能涉及转录调节、肿瘤抑制和泛素化修饰等过程.通过免疫共沉淀证实了Bip2与Caliban在体外结合,并发现在果蝇体内过表达Bip2可以抑制 p 53 的转录.这些结果为研究Caliban的肿瘤抑制功能提供了基础.

本文引用格式

王喆 , 张洁 , 赵宇亮 , 秘晓林 . 肿瘤抑制因子Caliban相互作用蛋白的筛选和验证[J]. 中国科学院大学学报, 2011 , 28(4) : 481 -488 . DOI: 10.7523/j.issn.2095-6134.2011.4.009

Abstract

Caliban is a tumor suppressor. To understand its inherent mechanisms, we screened Caliban interacting proteins using the yeast two-hybrid system. We found four new Caliban interacting proteins, Bip2, Uba2, RpS27A, and CG7182. Moreover, over-expression of transcriptional factor Bip2 suppresses transcription of p 53. The tumor suppression function of p53 could be regulated through new mechanisms involving Bip2 and Caliban.

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