Differential effects on ARF stability by normal versus oncogenic levels of c-Myc expression.
Differential effects on ARF stability by normal versus oncogenic levels of c-Myc expression.
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正常与致癌水平的 c-Myc 表达对 ARF 稳定性的不同影响。
DOI:
10.1016/j.molcel.2013.05.006
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发表时间:
2013-07-11
期刊:
影响因子:
16
通讯作者:
Gu, Wei
中科院分区:
文献类型:
--
作者:
Chen, Delin;Kon, Ning;Zhong, Jiayun;Zhang, Pingzhao;Yu, Long;Gu, Wei
ARF suppresses aberrant cell growth upon c-Myc overexpression through activating p53 responses. Nevertheless, the precise mechanism by which ARF specifically, restrains the oncogenic potential of c-Myc without affecting its normal physiological function is not well understood. Here, we show that low levels of c-Myc expression stimulate cell proliferation whereas high levels inhibit through activating the ARF-p53 response. Although the mRNA levels of ARF are induced under both scenarios, the accumulation of ARF protein occurs only when ULF-mediated degradation of ARF is inhibited by c-Myc overexpression. Moreover, the levels of ARF are reduced through ULF-mediated ubiquitination upon DNA damage. Blocking ARF degradation by c-Myc overexpression dramatically stimulates the apoptotic responses. Our study reveals that ARF stability control is crucial for differentiating normal (low) vs. oncogenic (high) levels of c-Myc expression and suggests that differential effects on ULF- mediated ARF ubiquitination by c-Myc levels act as a barrier in oncogene-induced stress responses.
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影响因子:
3.7
作者:
di Tommaso A;Hagen J;Tompkins V;Muniz V;Dudakovic A;Kitzis A;Ladeveze V;Quelle DE
通讯作者:
Quelle DE
影响因子:
50.3
作者:
Figueroa ME;Abdel-Wahab O;Lu C;Ward PS;Patel J;Shih A;Li Y;Bhagwat N;Vasanthakumar A;Fernandez HF;Tallman MS;Sun Z;Wolniak K;Peeters JK;Liu W;Choe SE;Fantin VR;Paietta E;Löwenberg B;Licht JD;Godley LA;Delwel R;Valk PJ;Thompson CB;Levine RL;Melnick A
通讯作者:
Melnick A
影响因子:
64.8
作者:
Lowe, SW;Cepero, E;Evan, G
通讯作者:
Evan, G
影响因子:
50.3
作者:
Murphy DJ;Junttila MR;Pouyet L;Karnezis A;Shchors K;Bui DA;Brown-Swigart L;Johnson L;Evan GI
通讯作者:
Evan GI
DOI:
10.4161/cc.9.16.12605
发表时间:
2010-08-15
期刊:
Cell cycle (Georgetown, Tex.)
影响因子:
--
作者:
Lo D;Lu H
通讯作者:
Lu H