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E-GEOD-5583

ABSTRACT: Transcription profiling by array of embryonic stem cells from wild type and histone deacetylase 1 (HDAC1) knock out mice

OTHER RELATED OMICS DATASETS IN: PRJNA95449

PROVIDER: E-GEOD-5583 | ExpressionAtlas | 2014-07-03

REPOSITORIES: ExpressionAtlas

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			Action	DRS
	E-GEOD-5583-analysis-methods.tsv	Tabular
	E-GEOD-5583-atlasExperimentSummary.Rdata	Rdata
	E-GEOD-5583-configuration.xml	Xml
	E-GEOD-5583-percentile-ranks.tsv	Tabular
	E-GEOD-5583.condensed-sdrf.tsv	Tabular

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Transcription profiling of embryonic stem cells from wild type and histone deacetylase 1 (HDAC1) knock out mice to identify putative HDAC1 target genes.

Project description:Histone deacetylase 1 (HDAC1) is an enzyme that promotes deacetylation of acetylated lysine residues in histones and other proteins. Histone acetylation is often associated with gene activation and expression. Los of HDAC1 leads to severe problems in development and proliferation. Moreover, it seems to be the major histone deacetylase in mouse embryonic stem cells. We used microarrays to identify putative HDAC1 target genes. Experiment Overall Design: Wild type and HDAC1 mouse embryonic stem cell, originating from same litter, were used for RNA extraction and hybridization on Affymetrix microarrays.

2007-11-13 | E-GEOD-5583 | biostudies-arrayexpress

Expression data from wild type versus HDAC knock out mouse embryonic stem cells

Project description:Histone deacetylase 1 (HDAC1) is an enzyme that promotes deacetylation of acetylated lysine residues in histones and other proteins. Histone acetylation is often associated with gene activation and expression. Los of HDAC1 leads to severe problems in development and proliferation. Moreover, it seems to be the major histone deacetylase in mouse embryonic stem cells. We used microarrays to identify putative HDAC1 target genes. Keywords: Fold change anaylsis between wild type nad HDAC KO ES cells

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Proximity-dependent biotin identification (BioID) reveals a dynamic LSD1-CoREST interactome during embryonic stem cell differentiation

Project description:Lysine specific demethylase 1 (LSD1/KDM1A) regulates gene expression as part of the CoREST complex, along with co-repressor of REST (CoREST) and histone deacetylase 1 (HDAC1). CoREST is recruited to specific genomic loci by components of the core complex and numerous transient interactions with chromatin associated factors and transcription factors. To sample the chromatin environment in proximity to CoREST, we performed proximity-dependent biotin-identification (BioID) with four different members of the complex in 293T cells. Retaining only targets identified with 3 out of 4 baits, we identified 302 CoREST-associated proteins. Among this group were 16 of 18 known CoREST components and numerous novel associations, including readers (CHD3, 4, 6, 7 and 8), writers (KMT2B and KMT2D) and erasers (KDM2B) of histone methylation. However, components of other HDAC1 containing complexes (e.g. Sin3A, NuRD) were largely absent, suggesting that CoREST functions independently. As LSD1 plays an essential role in early embryonic development, we performed BioID using the endogeneously tagged protein in pluripotent, early- and late-differentiating embryonic stem cells. We identified 157 LSD1-associated proteins of which 66 were constitutively associated across all three time-points (44%), including novel interactions with the MMB and ChAHP complexes. These data imply that the majority of CoREST interactions are dynamic and highly cell type dependent.

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Mouse embryonic kidneys (E13.5): mutant (UB HDAC1,2-/-) vs. wild type

Project description:Transcriptional profiling of mouse embryonic kidneys (E13.5) comparing UB HDAC1,2-/- kidneys with wild type kidneys. Studies in our lab showed that histone deacetylase 1 (HDAC1) and 2 (HDAC2) perform redundant, yet essential functions in the developing mouse ureteric bud (UB) tissue. Double deletion of HDAC1 and HDAC2 in the UB results in impaired UB branching morphogenesis, followed by severe kidney dysgenesis. The goal of the microarray analysis was to identify the genetic pathways controlled by HDAC1 and 2 in the UB.

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Mouse embryonic kidneys (E13.5): mutant (UB HDAC1,2-/-) vs. wild type

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Comparative genomic hybridisation of gDNA from HDAC1-/-; HDAC2+/- diseased mouse thymocytes and sample matched wild-type tail

Project description:Histone deacetylase 1 and 2 (HDAC1/2) regulate chromatin structure as the catalytic core of the Sin3A, NuRD and CoREST co-repressor complexes. To better understand the key pathways regulated by HDAC1/2 in the adaptive immune system and inform their exploitation as drug targets, we have generated mice with a T cell specific deletion and performed comparative genomic hybridisation using genomic DNA from HDAC1-/-; HDAC2+/- diseased thymocytes and sample-matched, wild-type tail. A data set from a related transcription-profiling study comparing HDAC1-/-; HDAC2+/- mouse thymus tissue against thymus tissues from wild-type counterparts has also been deposited at ArrayExpress under accession E-MTAB-1432: http://www.ebi.ac.uk/arrayexpress/experiments/E-MTAB-1432

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Rapid degradation of Histone Deacetylase 1 (HDAC1) reveals essential roles in both gene repression and active transcription

Project description:Histone Deacetylase 1 (HDAC1) removes acetyl groups from lysine residues on the core histones, balancing histone acetyltransferase (HAT) activity. Despite this apparent repressive function, suppression of HDAC activity causes both up and downregulation of gene expression. Here we exploit the degradation tag (dTAG) system to rapidly degrade HDAC1 in embryonic stem cells (ESCs) lacking the paralog, HDAC2. Unlike HDAC inhibitors that lack isoform specificity the dTAG system allowed specific HDAC1 targeting and completely removed HDAC1 100x faster than genetic knockouts. HDAC1 degradation caused rapid increases in histone acetylation, with H2BK5 and H2BK11 most sensitive. The majority of differentially expressed genes following 2 hours of HDAC1 degradation were upregulated (275 genes up vs 15 down) with increased proportions of downregulated genes at 6 (1153 up vs 443 down) and 24 hours (1146 up vs 967 down). Upregulated genes showed increased H2BK5ac and H3K27ac around their transcriptional start site (TSS). In contrast, decreased acetylation of super-enhancers (SEs) was linked to the most strongly downregulated genes, leading to a collapse of the core pluripotency-associated gene network. These findings suggest that HDAC1 plays a crucial role in regulating the ESC gene expression network by maintaining the correct acetylation levels at key genomic sites.

2024-11-27 | PXD053032 | Pride