The Anaphase-promoting Complex or Cyclosome Supports Cell Survival in Response to Endoplasmic Reticulum Stress
Overview
Affiliations
The anaphase-promoting complex or cyclosome (APC/C) is a multi-subunit ubiquitin ligase that regulates exit from mitosis and G1 phase of the cell cycle. Although the regulation and function of APC/C(Cdh1) in the unperturbed cell cycle is well studied, little is known of its role in non-genotoxic stress responses. Here, we demonstrate the role of APC/C(Cdh1) (APC/C activated by Cdh1 protein) in cellular protection from endoplasmic reticulum (ER) stress. Activation of APC/C(Cdh1) under ER stress conditions is evidenced by Cdh1-dependent degradation of its substrates. Importantly, the activity of APC/C(Cdh1) maintains the ER stress checkpoint, as depletion of Cdh1 by RNAi impairs cell cycle arrest and accelerates cell death following ER stress. Our findings identify APC/C(Cdh1) as a regulator of cell cycle checkpoint and cell survival in response to proteotoxic insults.
The Anaphase-Promoting Complex/Cyclosome Is a Cellular Ageing Regulator.
Hu X, Jin X, Cao X, Liu B Int J Mol Sci. 2022; 23(23).
PMID: 36499653 PMC: 9740938. DOI: 10.3390/ijms232315327.
Lyublinskaya O, Kornienko J, Ivanova J, Pugovkina N, Alekseenko L, Lyublinskaya E Int J Mol Sci. 2021; 22(21).
PMID: 34769282 PMC: 8584632. DOI: 10.3390/ijms222111851.
Wang C, Liu J, Yu N, Zheng C Front Genet. 2019; 10:1054.
PMID: 31824556 PMC: 6882287. DOI: 10.3389/fgene.2019.01054.
Rahimi H, Negahdari B, Shokrgozar M, Madadkar-Sobhani A, Mahdian R, Foroumadi A Res Pharm Sci. 2015; 10(1):59-67.
PMID: 26430458 PMC: 4578213.