Early development of bovine embryos depends on the cooperative action between oxidative and endoplasmic reticulum stresses

2014 ◽  
Author(s):  
Seung-Bin Yoon ◽  
Hae-Jun Yang ◽  
Seong-Eun Mun ◽  
Pil-Soo Jeong ◽  
Seon-A Choi ◽  
...  
2005 ◽  
Vol 25 (21) ◽  
pp. 9392-9405 ◽  
Author(s):  
Olivier Pluquet ◽  
Li-Ke Qu ◽  
Dionissios Baltzis ◽  
Antonis E. Koromilas

ABSTRACT Inactivation of the tumor suppressor p53 by degradation is a mechanism utilized by cells to adapt to endoplasmic reticulum (ER) stress. However, the mechanisms of p53 destabilization by ER stress are not known. We demonstrate here that the E3 ubiquitin-ligase Hdm2 is essential for the nucleocytoplasmic transport and proteasome-dependent degradation of p53 in ER-stressed cells. We also demonstrate that p53 phosphorylation at S315 and S376 is required for its nuclear export and degradation by Hdm2 without interfering with the ubiquitylation process. Furthermore, we show that p53 destabilization in unstressed cells utilizes the cooperative action of Hdm2 and glycogen synthase kinase 3β, a process that is enhanced in cells exposed to ER stress. In contrast to other stress pathways that stabilize p53, our findings further substantiate a negative role of ER stress in p53 activation with important implications for the function of the tumor suppressor in cells with a dysfunctional ER.


2007 ◽  
Vol 100 (3-4) ◽  
pp. 264-279 ◽  
Author(s):  
Silvia Modina ◽  
Francesco Abbate ◽  
Germana P. Germanà ◽  
Antonio Lauria ◽  
Alberto M. Luciano

animal ◽  
2012 ◽  
Vol 6 (8) ◽  
pp. 1199-1205 ◽  
Author(s):  
B. Zhang ◽  
F. Peñagaricano ◽  
H. Chen ◽  
H. Khatib

2007 ◽  
Vol 9 (2) ◽  
pp. 237-246 ◽  
Author(s):  
Song Hua ◽  
Yong Zhang ◽  
Xiang-Chen Li ◽  
Li-Bing Ma ◽  
Jun-Wei Cao ◽  
...  

2014 ◽  
Vol 16 (6) ◽  
pp. 418-427 ◽  
Author(s):  
Bo Wang ◽  
Yongsheng Wang ◽  
Man Zhang ◽  
Yue Du ◽  
Yijun Zhang ◽  
...  

2003 ◽  
Vol 54 (3) ◽  
pp. 217-225 ◽  
Author(s):  
Yves Bobinnec ◽  
Christiane Marcaillou ◽  
Xavier Morin ◽  
Alain Debec

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