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PXD021880

PXD021880 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleTDP-43 aggregation induced by oxidative stress causes global mitochondrial imbalance in ALS
DescriptionWhen mutant superoxide dismutase 1 (SOD1) was first linked to amyotrophic lateral sclerosis (ALS), it was thought that ALS is a disease of oxidative stress. Since the discovery of multiple ALS-linked genes involved in RNA processing and proteostasis, most recent research has been focused on molecular defects induced by those mutant genes, but whether and how oxidative stress might contribute to magnification of those molecular defects have remained unaddressed. Strikingly, a hallmark of both familial and sporadic ALS is the aggregation of the essential DNA/RNA binding protein TDP-43, which is thought to cause simultaneous loss-of-nuclear function and gain-of-cytoplasmic toxicity. A central unanswered question is what triggers ALS in adult followed by rapid and irreversible progression? Here we report that neuronal cells are particularly prone to oxidative stress to trigger TDP-43 aggregation, which in turn sponges a large subset of microRNAs and proteins to cause both up-regulation and functional depletion of different sets of gene products. Remarkably, a large fraction of those functionally perturbed genes are nuclear genome-encoded mitochondrial proteins, thus resulting in a global mitochondrial imbalance, which further augments oxidative stress. We propose that this ferocious cycle driven by oxidative stress in combination with causal mutations in critical genes may underlie ALS onset and progression.
HostingRepositoryPRIDE
AnnounceDate2020-11-20
AnnouncementXMLSubmission_2020-11-20_06:26:27.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterkai wu
SpeciesList scientific name: Mus musculus (Mouse); NCBI TaxID: 10090;
ModificationListNo PTMs are included in the dataset
InstrumentQ Exactive HF
Dataset History
RevisionDatetimeStatusChangeLog Entry
02020-10-07 07:55:35ID requested
12020-11-20 06:26:27announced
Publication List
Dataset with its publication pending
Keyword List
submitter keyword: mouse N2a H2O2 ALS let-7c
Contact List
Yu Zhou
contact affiliationState Key Laboratory of Virology, Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China
contact emailyu.zhou@whu.edu.cn
lab head
kai wu
contact affiliationWuhan university
contact emailkai.wu@whu.edu.cn
dataset submitter
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Dataset FTP location
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