Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Spatially Constrained Tandem Bromodomain Inhibition Bolsters Sustained Repression of BRD4 Transcriptional Activity for TNBC Cell Growth

ABSTRACT: We performed RNA-seq of MDA-MB-231 cells that were treated with MS645 or JQ1 at 50 nM and 500 nM in an effort to understand how MS645 exerts such a profound cell growth inhibition on cancer cells.

ORGANISM(S): Homo sapiens

PROVIDER: GSE115550 | GEO | 2018/08/31

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other
	GSE115550_HTSeq_Sample_combine.txt.gz	Txt
	GSE115550_RAW.tar	Raw
	filelist.txt	Txt

Items per page:

1 - 4 of 4

Similar Datasets

Spatially constrained tandem bromodomain inhibition bolsters sustained repression of BRD4 transcriptional activity for TNBC cell growth.

Project description: Not available

| S-EPMC6077712 | biostudies-literature

Spatially Constrained Tandem Bromodomain Inhibition Bolsters Sustained Repression of BRD4 Transcriptional Activity for TNBC Cell Growth

Project description:Spatially Constrained Tandem Bromodomain Inhibition Bolsters Sustained Repression of BRD4 Transcriptional Activity for TNBC Cell Growth

| PRJNA475425 | ENA

Bromodomain Protein BRD4-Mediated Mutant p53 Transcription Promotes TNBC Progression.

Project description: Not available

| S-EPMC9738555 | biostudies-literature

BET bromodomain proteins Brd2, Brd3 and Brd4 selectively regulate metabolic pathways in the pancreatic β-cell

Project description:Displacement of Bromodomain and Extra-Terminal (BET) proteins from chromatin has promise for cancer and inflammatory disease treatments, but roles of BET proteins in metabolic disease remain unexplored. Small molecule BET inhibitors, such as JQ1, block BET protein binding to acetylated lysines, but lack selectivity within the BET family (Brd2, Brd3, Brd4, Brdt), making it difficult to disentangle contributions of each family member to transcriptional and cellular outcomes. Here, we demonstrate multiple improvements in pancreatic β-cells upon BET inhibition with JQ1 or BET-specific siRNAs. JQ1 (50-400 nM) increases insulin secretion from INS-1 cells in a concentration dependent manner. JQ1 increases insulin content in INS-1 cells, accounting for increased secretion, in both rat and human islets. Higher concentrations of JQ1 decrease intracellular triglyceride stores in INS-1 cells, a result of increased fatty acid oxidation. Specific inhibition of both Brd2 and Brd4 enhances insulin transcription, leading to increased insulin content. Inhibition of Brd2 alone increases fatty acid oxidation. Overlapping yet discrete roles for individual BET proteins in metabolic regulation suggest new isoform-selective BET inhibitors may be useful to treat insulin resistant/diabetic patients. Results imply that cancer and diseases of chronic inflammation or disordered metabolism are related through shared chromatin regulatory mechanisms.

2016-03-07 | GSE77450 | GEO

Bromodomain protein BRD4 is required for estrogen receptor-dependent transcription and enhancer activation [RNA-Seq]

Project description:The estrogen receptor-M-NM-1 (ERM-NM-1) is a transcription factor which plays a critical role in controlling cell proliferation and tumorigenesis by recruiting various cofactors to estrogen response elements (EREs) to induce or repress gene transcription. A deeper understanding of these transcriptional mechanisms may uncover novel therapeutic targets for ERM-NM-1-dependent cancers. Here we show for the first time that BRD4 regulates ERM-NM-1M-bM-^HM-^Rinduced gene expression by affecting elongation-associated phosphorylation of RNA Polymerase II (RNAPII P-Ser2) and histone H2B monoubiquitination (H2Bub1). Consistently, BRD4 activity is required for estrogen-induced proliferation of ER+ breast and endometrial cancer cells and uterine growth in mice. Genome-wide occupancy studies revealed an enrichment of BRD4 on transcriptional start sites as well as EREs enriched for H3K27ac and demonstrate a requirement for BRD4 for H2B monoubiquitination in the transcribed region of estrogen-responsive genes. Importantly, we further demonstrate that BRD4 occupancy correlates with active mRNA transcription and is required for the production of ERM-NM-1-dependent enhancer RNAs (eRNAs). These results uncover BRD4 as a central regulator of ERM-NM-1 function and potential therapeutic target. mRNA expression profiles of MCF7 cells treated with +/- estrogen treatment under negative control siRNA, BRD4 siRNA or JQ1 treatment, in duplicates.

2014-07-10 | E-GEOD-55922 | biostudies-arrayexpress

Expression Data For BRD4 Inhibition

Project description:BRD4 Inhibition of spindle cell malignant peripheral nerve sheath tumor (sMPNST) tumor cells Cells were treated with Brd4 shRNA (3 days) or 500 nM JQ1 (2 days) before RNA isolation

2013-09-13 | E-GEOD-50865 | biostudies-arrayexpress

Segmental Isotope Labelling of an Individual Bromodomain of a Tandem Domain BRD4 Using Sortase A.

Project description: Not available

| S-EPMC4851411 | biostudies-literature

Bromodomain-Containing-Protein 4 (BRD4) Regulates RNA Polymerase II Serine 2 Phosphorylation in Human CD4+ T Cells

Project description:Transcriptional elongation by RNA polymerase II (Pol II) is regulated by positive transcription elongation factor b (P-TEFb) in association with Bromodomain-containing protein 4 (BRD4). We used genome-wide chromatin immunoprecipitation sequencing in primary human CD4+ T cells to reveal that BRD4 co-localizes with Ser2-phosphorylated Pol II (Pol II Ser2) at both enhancers and promoters of active genes. Disruption of bromodomain:histone acetylation interactions by JQ1, a small-molecule bromodomain inhibitor, resulted in decreased BRD4 binding, reduced Pol II Ser2, and reduced expression of lineage-specific genes in primary human CD4+ T cells. A large number of JQ1-disrupted BRD4 binding regions exhibited di-acetylated H4 (lysine-5 and -8) and H3K27 acetylation (H3K27ac), which correlated with the presence of histone acetyltransferases and deacetylases. Genes associated with BRD4/H3K27ac co-occupancy exhibited significantly higher activity than those associated with H3K27ac or BRD4 binding alone. Comparison of BRD4 binding in T cells and in human embryonic stem cells revealed that enhancer BRD4 binding sites were predominantly lineage-specific. Our findings suggest that BRD4-driven Pol II phosphorylation at serine 2 plays an important role in regulating lineage-specific gene transcription in human CD4+ T cells. Examination of BRD4, total Pol II, serine 2 phosphorylated Pol II and serine 5 phosphorylated Pol II binding in CD4+ T cells (with and without JQ1 treatment) and BRD4 binding in human embryonic stems cell; PolyA RNA expression in CD4+ T cells( with and without JQ1 treatment) using RNA-seq

2012-11-14 | E-GEOD-33281 | biostudies-arrayexpress

Epigenetic Targeting of Bromodomain Protein BRD4 Counteracts Cancer Cachexia and Prolongs Survival

Project description:Cancer cachexia is a devastating metabolic syndrome characterized by systemic inflammation and massive muscle and adipose tissue wasting. Although cancer cachexia is responsible for approximately one third of cancer deaths, no effective therapies are available and the underlying mechanisms have not been fully elucidated.We have found that (+)-JQ1 administration protects tumor-bearing mice from body weight loss, muscle and adipose tissue wasting. Remarkably, in C26-tumor bearing mice (+)-JQ1 administration dramatically prolongs survival, without directly affecting tumor growth. By ChIP-seq analyses, we unveil that the BET proteins directly promote the muscle atrophy program during cachexia. Consistently, BET pharmacological blockade prevents the activation of catabolic genes associated with skeletal muscle atrophy and decreases IL6 systemic levels. Overall, these findings indicate that BET may represent a promising therapeutic target in the management of cancer cachexia.

2017-10-01 | GSE104155 | GEO

Expression data from non-small cell lung cancer cell line DV90 after Bromodomain and extra terminal domain (BET) inhibitor JQ1 treatment

Project description:Bromodomain and extra terminal domain (BET) inhibition reduces occupancy of BET-family proteins at promoter and enhancer sites resulting in changes in the transcription of specific genes. We used microarray profiling to investigate the transcriptional changes induced by BET inhibitor JQ1 treatment in DV90 cells to identify the underlying changes of gene regulation that lead to JQ1 sensitivity. DV90 cells (JQ1 sensitive non-small cell lung cancer cell line) were treated with 135 nM (IC50) or 785 nM (IC90) of JQ1 for 4h and 24h. DMSO treated controls served as reference and at least four replicates per condition were collected. RNA was extracted and hybridized to Affymetrix HuGene-2.1ST microarrays to identify treatment induced transcriptional changes.

2016-03-31 | E-GEOD-75960 | biostudies-arrayexpress

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

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