A stapled p53 helix overcomes HDMX-mediated suppression of p53.

A stapled p53 helix overcomes HDMX-mediated suppression of p53.
复制标题

DOI:
10.1016/j.ccr.2010.10.024
复制
发表时间:
2010-11-16
期刊:
影响因子:
50.3
通讯作者:
Walensky LD
Walensky LD
中科院分区:
医学1区
文献类型:
--
作者:
Bernal F;Wade M;Godes M;Davis TN;Whitehead DG;Kung AL;Wahl GM;Walensky LD

文献摘要

参考文献

被引文献

相似文献

癌细胞通过缺失、突变、蛋白酶体降解或隔离来中和P53,从而获得病理生存优势。靶向E3泛素连接酶Hdm2可以导致P53水平的治疗性激增。然而,hdm2抑制的效果可以被hdmx的过度表达所折衷,hdm2是一种结合和隔离p53的hdm2同源物。在这里,我们报道了一个装订的p53螺旋优先靶向HDMX,阻断抑制性P53-HDMX复合体的形成,诱导P53依赖的转录上调,从而在体内外克服HDMX介导的癌症耐药。重要的是,我们对P53相互作用动力学的分析为通过将Hdm2、HDMX或双重抑制剂与适当的细胞环境相匹配来重新激活癌症中的P53通路提供了蓝图。
Cancer cells neutralize p53 by deletion, mutation, proteasomal degradation, or sequestration to achieve a pathologic survival advantage. Targeting the E3 ubiquitin ligase HDM2 can lead to a therapeutic surge in p53 levels. However, the efficacy of HDM2 inhibition can be compromised by overexpression of HDMX, an HDM2 homologue that binds and sequesters p53. Here we report that a stapled p53 helix preferentially targets HDMX, blocks the formation of inhibitory p53-HDMX complexes, induces p53-dependent transcriptional upregulation, and thereby overcomes HDMX-mediated cancer resistance in vitro and in vivo. Importantly, our analysis of p53 interaction dynamics provides a blueprint for reactivating the p53 pathway in cancer by matching HDM2, HDMX, or dual inhibitors to the appropriate cellular context.
DOI: 10.1006/jmbi.1997.1078
发表时间: 1997-06-27
影响因子: 5.6
作者:
Bottger, A;Bottger, V;Lane, DP
通讯作者: Lane, DP
DOI: 10.1074/jbc.c600147200
发表时间: 2006-11-03
影响因子: 4.8
作者:
Hu, Baoli;Gilkes, Daniele M.;Chen, Jiandong
通讯作者: Chen, Jiandong
DOI: 10.1158/1535-7163.mct-05-0199
发表时间: 2006-01-01
影响因子: 5.7
作者:
Koblish, HK;Zhao, SY;Maroney, AC
通讯作者: Maroney, AC
DOI: 10.1038/nature07396
发表时间: 2008-10-23
期刊: NATURE
影响因子: 64.8
作者:
Gavathiotis, Evripidis;Suzuki, Motoshi;Davis, Marguerite L.;Pitter, Kenneth;Bird, Gregory H.;Katz, Samuel G.;Tu, Ho-Chou;Kim, Hyungjin;Cheng, Emily H. -Y.;Tjandra, Nico;Walensky, Loren D.
通讯作者: Walensky, Loren D.
DOI: 10.1074/jbc.m809096200
发表时间: 2009-03-27
影响因子: 4.8
作者:
Kallen, Joerg;Goepfert, Arnaud;Lisztwan, Joanna
通讯作者: Lisztwan, Joanna