Analysis of proteome-wide degradation dynamics in ALS SOD1 iPSC-derived patient neurons reveals disrupted VCP homeostasis.
Analysis of proteome-wide degradation dynamics in ALS SOD1 iPSC-derived patient neurons reveals disrupted VCP homeostasis.
复制标题
DOI:
10.1016/j.celrep.2023.113160
复制
发表时间:
2023-10-31
期刊:
影响因子:
8.8
通讯作者:
中科院分区:
文献类型:
--
作者:
Mutations in SOD1 cause amyotrophic lateral sclerosis (ALS) through gain-of-function effects, yet the mechanisms by which misfolded mutant SOD1 (mutSOD1) protein impairs human motor neurons (MNs) remain unclear. Here, we use induced-pluripotent-stem-cell-derived MNs coupled to metabolic stable isotope labeling and mass spectrometry to investigate proteome-wide degradation dynamics. We find several proteins, including the ALS-causal valosin-containing protein (VCP), which predominantly acts in proteasome degradation and autophagy, that degrade slower in mutSOD1 relative to isogenic control MNs. The interactome of VCP is altered in mutSOD1 MNs in vitro, while VCP selectively accumulates in the affected motor cortex of ALS-SOD1 patients. Overexpression of VCP rescues mutSOD1 toxicity in MNs in vitro and in a C. elegans model in vivo, in part due to its ability to modulate the degradation of insoluble mutSOD1. Our results demonstrate that VCP contributes to mutSOD1-dependent degeneration, link two distinct ALS-causal genes, and highlight selective protein degradation impairment in ALS pathophysiology. Tsioras et al. use stable isotope labeling coupled with mass spectrometry to study proteome degradation dynamics in ALS SOD1 and isogenic control iPSC-derived neurons. VCP persists in mutSOD1 motor neurons; VCP can rescue mutant SOD1 toxicity in vitro and in vivo by modulating the degradation of insoluble SOD1.
登录
查看更多内容
影响因子:
3.9
作者:
Abel, Olubunmi;Powell, John F.;Al-Chalabi, Ammar
通讯作者:
Al-Chalabi, Ammar
DOI:
10.1073/pnas.0605814103
发表时间:
2006-09-12
影响因子:
11.1
作者:
Ferri, Alberto;Cozzolino, Mauro;Carri, Maria Teresa
通讯作者:
Carri, Maria Teresa
影响因子:
5.3
作者:
Castellanos-Montiel MJ;Chaineau M;Durcan TM
通讯作者:
Durcan TM
影响因子:
4.5
作者:
Baskoylu, Saba N.;Yersak, Jill;Hart, Anne C.
通讯作者:
Hart, Anne C.
影响因子:
5.7
作者:
Blythe, Emily E.;Gates, Stephanie N.;Martin, Andreas
通讯作者:
Martin, Andreas