An acetylation switch controls TDP-43 function and aggregation propensity.
An acetylation switch controls TDP-43 function and aggregation propensity.
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DOI:
10.1038/ncomms6845
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发表时间:
2015-01-05
影响因子:
16.6
通讯作者:
Lee, Virginia M. Y.
中科院分区:
文献类型:
--
作者:
Cohen, Todd J.;Hwang, Andrew W.;Restrepo, Clark R.;Yuan, Chao-Xing;Trojanowski, John Q.;Lee, Virginia M. Y.
TDP-43 pathology is a disease hallmark that characterizes amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD-TDP). Although a critical role for TDP-43 as an RNA-binding protein has emerged, the regulation of TDP-43 function is poorly understood. Here we identify lysine acetylation as a novel post-translational modification controlling TDP-43 function and aggregation. We provide evidence that TDP-43 acetylation impairs RNA-binding and promotes accumulation of insoluble, hyper-phosphorylated TDP-43 species that largely resemble pathological inclusions in ALS and FTLD-TDP. Moreover, biochemical and cell-based assays identify oxidative stress as a signaling cue that promotes acetylated TDP-43 aggregates that are readily engaged by the cellular defense machinery. Importantly, acetylated TDP-43 lesions are found in ALS patient spinal cord, indicating that aberrant TDP-43 acetylation and loss of RNA binding are linked to TDP-43 proteinopathy. Thus, modulating TDP-43 acetylation represents a plausible strategy to fine-tune TDP-43 activity, which could provide new therapeutic avenues for TDP-43 proteinopathies.
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影响因子:
56.9
作者:
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通讯作者:
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影响因子:
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影响因子:
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Lee, Virginia M. -Y.
DOI:
10.1073/pnas.0800546105
发表时间:
2008-03-11
影响因子:
11.1
作者:
Ayala, Youhna M.;Misteli, Tom;Baralle, Francisco E.
通讯作者:
Baralle, Francisco E.