Lamin A/C mutants disturb sumo1 localization and sumoylation in vitro and in vivo.

Lamin A/C mutants disturb sumo1 localization and sumoylation in vitro and in vivo.
复制标题

DOI:
10.1371/journal.pone.0045918
复制
发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Tesson F
Tesson F
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Boudreau É;Labib S;Bertrand AT;Decostre V;Bolongo PM;Sylvius N;Bonne G;Tesson F

文献摘要

参考文献

被引文献

相似文献

A 型核纤层蛋白 A 和 C 是核中间丝蛋白,其中突变与通常称为核纤层蛋白病的多种疾病表型有关。一些研究表明苏酰化与 A 型核纤层蛋白的调节有关。 Sumoylation 是一种翻译后蛋白质修饰,通过将小型泛素相关修饰剂 (sumo) 附着到各种底物来调节多种细胞过程。在这里,我们发现核纤层蛋白突变体导致 sumo1 在体外(过度表达突变核纤层蛋白 A 和 C 的 C2C12 细胞)和体内(来自 LmnaH222P /H222P 小鼠模型的原代成肌细胞和肌病肌肉组织)的错误定位。在 C2C12 细胞中,我们发现,核纤层蛋白 A/C 的 p.Asp192Gly、p.Gln353Lys 和 p.Arg386Lys 聚集体中 sumo1 的捕获与 sumo1 稳态水平的增加相关。然而,核纤层蛋白 A 和 C 似乎并未被 sumo1 修饰。我们的结果表明,突变核纤层蛋白 A/C 改变了 sumo1 的动态,因此 sumo1 的错误调节可能导致核纤层蛋白病的疾病进展。
A-type lamins A and C are nuclear intermediate filament proteins in which mutations have been implicated in multiple disease phenotypes commonly known as laminopathies. A few studies have implicated sumoylation in the regulation of A-type lamins. Sumoylation is a post-translational protein modification that regulates a wide range of cellular processes through the attachment of small ubiquitin-related modifier (sumo) to various substrates. Here we showed that laminopathy mutants result in the mislocalization of sumo1 both in vitro (C2C12 cells overexpressing mutant lamins A and C) and in vivo (primary myoblasts and myopathic muscle tissue from the LmnaH222P /H222P mouse model). In C2C12 cells, we showed that the trapping of sumo1 in p.Asp192Gly, p.Gln353Lys, and p.Arg386Lys aggregates of lamin A/C correlated with an increased steady-state level of sumoylation. However, lamin A and C did not appear to be modified by sumo1. Our results suggest that mutant lamin A/C alters the dynamics of sumo1 and thus misregulation of sumoylation may be contributing to disease progression in laminopathies.
DOI: 10.1074/jbc.m201799200
发表时间: 2002-05-31
影响因子: 4.8
作者:
Hang, J;Dasso, M
通讯作者: Dasso, M
DOI: 10.1093/hmg/ddr344
发表时间: 2011-11-01
影响因子: 3.5
作者:
De Vos, Winnok H.;Houben, Frederik;Broers, Jos L. V.
通讯作者: Broers, Jos L. V.
DOI: 10.1016/j.yexcr.2005.10.011
发表时间: 2005-01-15
影响因子: 3.7
作者:
Hübner, S;Eam, JE;Jans, DA
通讯作者: Jans, DA
DOI: 10.1093/hmg/ddi017
发表时间: 2005-01-01
影响因子: 3.5
作者:
Arimura, T;Helbling-Leclerc, A;Bonne, G
通讯作者: Bonne, G
DOI: 10.1529/biophysj.103.038422
发表时间: 2004-06-01
影响因子: 3.4
作者:
Costes, SV;Daelemans, D;Lockett, S
通讯作者: Lockett, S