Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Mapping of TDP-43 ubiquitination and acetylation sites

ABSTRACT: TAR DNA binding protein of 43 kDa (TDP-43) forms aggregates in neurodegenerative diseases, particularly certain forms of frontotemporal dementia and amyotrophic lateral sclerosis. Pathological modifications of TDP-43 include proteolytic fragmentation, phosphorylation, and ubiquitinylation. In this study, we systematically mapped TDP-42 ubiquitination as well as acetylation sites.

INSTRUMENT(S): Orbitrap Fusion

ORGANISM(S): Homo Sapiens (human)

DISEASE(S): Frontotemporal Dementia,Amyotrophic Lateral Sclerosis

SUBMITTER: Johannes Gloeckner

LAB HEAD: Christian Johannes Gloeckner

PROVIDER: PXD030170 | Pride | 2022-04-01

REPOSITORIES: Pride

ACCESS DATA

Json Xml

Publications

Sirtuin-1 sensitive lysine-136 acetylation drives phase separation and pathological aggregation of TDP-43.

Garcia Morato Jorge J Hans Friederike F von Zweydorf Felix F Feederle Regina R Elsässer Simon J SJ Skodras Angelos A AA Gloeckner Christian Johannes CJ Buratti Emanuele E Neumann Manuela M Kahle Philipp J PJ

Nature communications 20220309 1

Trans-activation response DNA-binding protein of 43 kDa (TDP-43) regulates RNA processing and forms neuropathological aggregates in patients with amyotrophic lateral sclerosis and frontotemporal lobar degeneration. Investigating TDP-43 post-translational modifications, we discovered that K84 acetylation reduced nuclear import whereas K136 acetylation impaired RNA binding and splicing capabilities of TDP-43. Such failure of RNA interaction triggered TDP-43 phase separation mediated by the C-term ...[more]

PMID: 35264561

Publication: 1/2

Similar Datasets

TDP-43 can directly affect splicing profiles and isoform production of genes involved in the apoptotic and mitotic cellular pathways

Project description:In recent times, high throughput screening analyses have broadly defined the RNA cellular targets of TDP-43, a nuclear factor involved in neurodegeneration. A common outcome of all these studies is that changing the expression levels of this protein can alter the expression of several hundred RNAs within cells. What still remains to be clarified is which changes represent direct cellular targets of TDP-43 or just secondary variations due to the general role played by this protein in RNA metabolism. Using a HTS-based splicing junction analysis we have now identified 162 splicing events that are consistent with being directly controlled by TDP-43. Validation of the data, both in neuronal and non-neuronal cell lines demonstrated that TDP-43 substantially alters the levels of isoform expression in four genes potentially important for neuropathology: MADD/IG20, STAG2, FNIP1, and BRD8. Most importantly, for MADD/IG20 and STAG2 these changes could also be confirmed at the protein level. These alterations were also observed in a cellular model that successfully mimics TDP-43 loss of function effects following its aggregation. These novel splicing events may represent potential biomarkers to predict disease onset, progression, and to test the efficacy of novel therapeutic agents to recover TDP-43 functional properties. We have performed an HTS-based splicing junction analysis of a series of stable cell lines that lack TDP-43, overexpress this factor, or express an RNA-binding mutant, in order to find splicing events, potentially associated with neurodegenerativce diseases, regulated by this splicing factor. Samples were analyzed in triplicate from: The following samples were analyzed in triplicate: wild-type HEK-293 cells, siTDP43-treated HEK-293 cells, siTDP43-treated HEK-293 cells overexpressing a flagged-wildtype TDP-43, siTDP43-treated HEK-293 cells overexpressing a RNA-binding deficient mutant.

2015-08-11 | E-GEOD-67195 | biostudies-arrayexpress

TDP-43 iCLIP of SHSY5Y cells

Project description:TDP-43 is an important RNA binding protein. To better understand its binding targets in human neurons, we performed TDP-43 iCLIP on SHSY5Y cells.

2022-02-02 | E-MTAB-11243 | biostudies-arrayexpress

Identify the specific binding partners of cytosolic TDP-43 WT and TDP-43ΔCR

Project description:To investigate how translation changed as a function of TDP-43 CR loss, mass spectrometry (MS) based approach was performed to monitor the dynamics of TDP-43-associated protein complexes in response to CR deletion using TDP-43 knockout HEK293 cells expressing strep tagged wild type TDP-43 (TDP-43WT) or TDP-43ΔCR mutant.

2022-05-20 | PXD027494 | Pride

Nucleolin rescues TDP-43 toxicity in yeast and human cell models

Project description:TDP-43 is a nuclear protein involved in pivotal processes, extensively studied for its implication in neurodegenerative disorders. TDP-43 cytosolic inclusions are a common neuropathologic hallmark in amyotrophic lateral sclerosis (ALS) and related diseases, and it is now established that TDP-43 misfolding and aggregation play a key role in their etiopathology. TDP-43 neurotoxic mechanisms are not yet clariﬁed, but the identification of proteins able to modulate TDP-43-mediated damage may be promising therapeutic targets for TDP-43 proteinopathies. Here we show by the use of refined yeast models that the nucleolar protein nucleolin (NCL) acts as a potent suppressor of TDP-43 toxicity, restoring cell viability. We provide evidence that NCL co-expression is able to alleviate TDP-43-induced damage also in human cells, further supporting its beneficial effects in a more consistent pathophysiological context. Presented data suggest that NCL could promote TDP-43 nuclear retention, reducing the formation of toxic cytosolic TDP-43 aggregates.

2021-03-26 | PXD022432 | Pride

Identification of Neuronal RNA Targets of TDP-43-Containing Ribonucleoprotein Complexes

Project description:We identify the RNA targets of TAR DNA-binding protein 43 (TDP-43) from cortical neurons by RNA immunoprecipitation followed by deep sequencing (RIP-seq). We identify 4352 highly enriched RNA targets of TDP-43. We determined that the canonical TDP-43 binding site (TG)n was 55.1-fold enriched in our TDP-43 library. Moreover, our analysis shows there is often an adenine in the middle of the motif, (TG)nTA(TG)m. TDP-43 RNA targets are particularly enriched for Gene Ontology terms related to RNA metabolism, neuronal development, and synaptic function. Examination of TDP-43 RNA targets in rat cortical neurons by RIP-seq. Chantelle F. Sephton isolated the TDP-43:RNA complexes and generated the cDNA library for deep sequencing. Email: chantelle.sephton@utsouthwestern.edu Phone: 214-648-4119 Fax: 214-648-1801 ULR: http://www8.utsouthwestern.edu/utsw/cda/dept120915/files/151135.html Organization name: University of Texas Southwestern Medical Center at Dallas Department: Neuroscience Lab: Gang Yu lab Street: 6000 Harry Hines Blvd. City: Dallas State: Texas ZIP: 75390 Country: USA

2010-11-04 | E-GEOD-25032 | biostudies-arrayexpress

TDP-43 regulates cancer-associated microRNAs

Project description:MicroRNAs (miRNAs) play important roles in a wide range of cellular processes. Aberrant regulation of miRNA genes contributes to human diseases, including cancer. The TAR DNA binding protein 43 (TDP-43), a DNA/RNA binding protein associated with neurodegeneration, is involved in miRNA biogenesis. Here, we systematically examined miRNAs whose expression levels are regulated by TDP-43 using RNA-Seq coupled with siRNA-mediated knockdown approach. TDP-43 knocking down affected the expression of a number of miRNAs. Alterations in isomiR patterns and miRNA arm selection after TDP-43 knockdown suggest a role of TDP-43 in miRNA editing. We examined correlation of selected TDP-43 associated miRNAs and their candidate target genes in human cancers. Our data reveal highly complex roles of TDP-43 in regulating different miRNAs and their target genes. Our results suggest that TDP-43 may promote migration of lung cancer cells by regulating miR-423-3p expression. On the other hand, TDP-43 increases miR-500a-3p expression and binds to the mature miR-500a-3p sequence. Low expression of miR-500a-3p was associated with poor survival of lung cancer patients, suggesting that TDP-43 may have a suppressive role in cancer by regulating miR-500a-3p. Our experiments reveal that cancer-associated genes LIF and PAPPA may be targets of miR-500a-3p. Together with other studies, our work suggests that TDP-43-regulated miRNAs may play multi-facet roles in the pathogenesis of cancer. small RNA seq in SH-SY-5Y, SNB-19 and HT22 (TDP-43 siRNA VS Control siRNA)

2016-08-02 | E-GEOD-85065 | biostudies-arrayexpress

Divergent roles of ALS-linked proteins FUS/TLS and TDP-43 intersect in processing long pre-mRNAs (CLIP-Seq)

Project description:FUS/TLS and TDP-43 are RNA/DNA-binding proteins integrally involved in amyotrophic lateral sclerosis (ALS) and frontal temporal dementia. FUS/TLS is shown to bind RNAs from >5,500 genes in mouse and human brain, primarily through a GUGGU binding motif. A characteristic sawtooth-like binding pattern is identified, supporting co-transcriptional deposition of FUS/TLS. Depletion of FUS/TLS from the adult nervous system is shown to alter levels or splicing of >970 mRNAs, most of which are distinct from the RNAs whose maturation is dependent on TDP-43. Nonetheless, only 55 RNAs are reduced upon depletion of either TDP-43 or FUS/TLS from mouse brain and human neurons differentiated from pluripotent stem cells, including mRNAs transcribed from genes with exceptionally long introns and that encode proteins essential for neuronal integrity. A subset of these is significantly lowered in FUS/TLSR521G and TDP-43G298S mutant fibroblasts and in TDP-43 aggregate-containing motor neurons in sporadic ALS, evidence pointing to a common loss-of-function pathway as one component underlying motor neuron death from misregulation of TDP-43 or FUS/TLS. CLIP of Fus/Tls in 8 week mouse brain and adult human brain

2012-09-30 | E-GEOD-40651 | biostudies-arrayexpress

Divergent roles of ALS-linked proteins FUS/TLS and TDP-43 intersect in processing long pre-mRNAs (RNA-Seq)

2012-09-30 | E-GEOD-40652 | biostudies-arrayexpress

Nanopore sequencing of UNC13A from SHSY5Y and patient RNA

Project description:UNC13A contains a novel cryptic exon which is expressed upon TDP-43 knockdown. However, it also features TDP-43 regulated intron retention of a downstream intron. To investigate the correlation of these two events, we performed Nanopore sequencing of amplicons from SHSY5Y cells with inducible TDP-43 knockdown, and FTD patient RNA samples

2022-02-10 | E-MTAB-11244 | biostudies-arrayexpress

Disrupted processing of long pre-mRNAs and widespread RNA missplicing are components of neuronal vulnerability from loss of nuclear TDP-43 (CLIP)

Project description:Cross-linking and immunoprecipitation coupled with high-throughput sequencing was used to identify binding sites within 6,304 genes as the brain RNA targets for TDP-43, an RNA binding protein which when mutated causes Amyotrophic Lateral Sclerosis (ALS). Use of massively parallel sequencing and splicing-sensitive junction arrays revealed that levels of 601 mRNAs are changed (including Fus/Tls, progranulin, and other transcripts encoding neurodegenerative disease-associated proteins) and 965 altered splicing events are detected (including in sortilin, the receptor for progranulin), following depletion of TDP-43 from adult brain with antisense oligonucleotides. RNAs whose levels are most depleted by reduction in TDP-43 are derived from genes with very long introns and which encode proteins involved in synaptic activity. Lastly, TDP-43 was found to auto-regulate its synthesis, in part by directly binding and enhancing splicing of an intron within the 3M-bM-^@M-^Y untranslated region of its own transcript, thereby triggering nonsense mediated RNA degradation. CLIP of Tdp-43 in 8 week mouse brain.

2011-03-03 | E-GEOD-27201 | biostudies-arrayexpress

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data