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Homo sapiens

ABSTRACT: 24hr CA treatment vs. DMSO in HCT116 cells (from 'Identification of CDK8 and CDK19 substrates in human cells using cortistatin A and quantitative phosphoproteomics')

OTHER RELATED OMICS DATASETS IN: PXD003698

PROVIDER: PRJNA313158 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR3187281.fastq.gz	Fastqsanger.gz
	SRR3187282.fastq.gz	Fastqsanger.gz
	SRR3187283.fastq.gz	Fastqsanger.gz
	SRR3187284.fastq.gz	Fastqsanger.gz
	SRR3187285.fastq.gz	Fastqsanger.gz

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Similar Datasets

24hr CA treatment vs. DMSO in HCT116 cells (from 'Identification of CDK8 and CDK19 substrates in human cells using cortistatin A and quantitative phosphoproteomics')

Project description:Cortistatin A (CA) is a highly selective inhibitor of the Mediator kinases CDK8 and CDK19. Using CA, we report here the first large-scale identification of Mediator kinase substrates in human cells (HCT116). Among over 16,000 quantified phosphosites, we identified 78 high-confidence Mediator kinase targets within 64 proteins, including DNA-binding transcription factors and proteins associated with chromatin, DNA repair, and RNA polymerase II. Although RNA-Seq data correlated with Mediator kinase targets, CA effects on gene expression were limited and distinct from CDK8 or CDK19 knockdown. Quantitative proteome analyses, which tracked about 7,000 proteins across six time points (0 â?? 24h), revealed that CA selectively affected pathways implicated in inflammation, growth, and metabolic regulation; contrary to expectations, increased turnover of Mediator kinase targets was not generally observed. Collectively, these data support Mediator kinases as regulators of chromatin and RNA polymerase II activity and suggest cellular roles beyond transcription, including metabolism and DNA repair. HCT116 cells were treated with either 100nM CA or DMSO in biological triplicate for each population (6 samples total). Treatment was for 24h for compound and vehicle.

2016-02-26 | E-GEOD-78506 | biostudies-arrayexpress

Identification of CDK8 and CDK19 substrates in human cells using cortistatin A and quantitative phosphoproteomics

Project description:Cortistatin A (CA) is a highly selective inhibitor of the Mediator kinases CDK8 and CDK19. Using CA, we report here the first large-scale identification of Mediator kinase substrates in human cells (HCT116). Among over 16,000 quantified sites, we identified 78 high-confidence Mediator kinase targets within 64 proteins, including DNA-binding transcription factors and proteins associated with chromatin, DNA repair, and RNA polymerase II. Although RNA-seq data correlated with Mediator kinase targets, CA effects on gene expression were limited and distinct from CDK8 or CDK19 knockdown. Quantitative proteome analyses, which tracked about 7,000 proteins across six time points (0-24h), revealed that CA selectively affected pathways implicated in inflammation, growth, and metabolic regulation; contrary to expectations, increased turnover of Mediator kinase targets was not generally observed. Collectively, these data support Mediator kinases as regulators of chromatin and RNA polymerase II activity and suggest roles beyond transcription, including metabolism and DNA repair.

2018-10-24 | PXD003698 | Pride

24hr CA treatment vs. DMSO in HCT116 cells (from 'Identification of CDK8 and CDK19 substrates in human cells using cortistatin A and quantitative phosphoproteomics')

Project description:Cortistatin A (CA) is a highly selective inhibitor of the Mediator kinases CDK8 and CDK19. Using CA, we report here the first large-scale identification of Mediator kinase substrates in human cells (HCT116). Among over 16,000 quantified phosphosites, we identified 78 high-confidence Mediator kinase targets within 64 proteins, including DNA-binding transcription factors and proteins associated with chromatin, DNA repair, and RNA polymerase II. Although RNA-Seq data correlated with Mediator kinase targets, CA effects on gene expression were limited and distinct from CDK8 or CDK19 knockdown. Quantitative proteome analyses, which tracked about 7,000 proteins across six time points (0 – 24h), revealed that CA selectively affected pathways implicated in inflammation, growth, and metabolic regulation; contrary to expectations, increased turnover of Mediator kinase targets was not generally observed. Collectively, these data support Mediator kinases as regulators of chromatin and RNA polymerase II activity and suggest cellular roles beyond transcription, including metabolism and DNA repair.

2016-02-26 | GSE78506 | GEO

Effect in HCT116 cells of 3hr cortistatin A treatment on gene expression.

Project description:We characterized the marine natural product cortistatin A (CA) as an inhibitor of CDK8 to determine whether pharmacologic inhibition of CDK8 regulates super-enhancer function and inhibits AML proliferation. In this series, we examine the transcriptional effect on insensitive HCT116 cells of 3hrs exposure to CA.

2015-09-25 | GSE65030 | GEO

Effect in MOLM-14 cells of 24hr cortistatin A treatment on gene expression

2015-09-25 | GSE65014 | GEO

Expression data from HCT116 colorectal cancer cells.

Project description:To define the contribution of CDK8 versus CDK19 to gene expression control, we performed a series of microarray assays for cells where each kinase was stably knocked down. Toward this end, we subjected HCT116 cells to three different stress stimuli: 5-fluorouracil (5FU), glucose deprivation, and hypoxia. We found that CDK8, but not CDK19, functions as a widespread coactivator of HIF1A target genes in hypoxia. Total RNA from HCT116 cells harvested using an RNeasy kit (Qiagen) was used for gene expression analysis on Affymetrix HuGene 1.0 ST arrays following the manufacturer’s instructions. Differential gene expression was determined with Partek software using one-way ANOVA.

2013-03-01 | E-GEOD-38061 | biostudies-arrayexpress

Effect of 4hr cortistatin A treatment on gene expression in SET2 cells.

2015-09-25 | GSE65105 | GEO

Effect in MV4;11 cells of 3hr cortistatin A treatment on gene expression

2015-09-25 | GSE65019 | GEO

Effect in K562 cells of 3hr cortistatin A treatment on gene expression

2015-09-25 | GSE65012 | GEO

Effect of cortistatin A (CA) on enhancer occupancy in CA-sensitive and -insensitive human cell lines

Project description:We characterized the marine natural product cortistatin A (CA) as an inhibitor of CDK8 to determine whether pharmacologic inhibition of CDK8 regulates super-enhancer function and inhibits AML proliferation. In this series, we use ChIP-seq of H3K27ac, H3K4me1, MED1, CDK8, BRD4, and RNA polymerase II (PolII) to examine enhancer occupancy and transcriptional response to CA in human cells lines.

2015-09-25 | GSE65138 | GEO

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