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Retinoids and EZH2 inhibitors cooperate to orchestrate cytotoxic effects on bladder cancer cells

ABSTRACT: Retinoids and EZH2 inhibitors cooperate to orchestrate cytotoxic effects on bladder cancer cells

PROVIDER: PRJNA952561 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR24087484_1.fastq.gz	Fastqsanger.gz
	SRR24087484_2.fastq.gz	Fastqsanger.gz
	SRR24087485_1.fastq.gz	Fastqsanger.gz
	SRR24087485_2.fastq.gz	Fastqsanger.gz
	SRR24087486_1.fastq.gz	Fastqsanger.gz

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Retinoids and EZH2 inhibitors cooperate to orchestrate cytotoxic effects on bladder cancer cells

Project description:Emerging evidence has highlighted the importance of targeting EZH2 in bladder cancer owing to the highly mutated nature of bladder cancers harboring mutations in chromatin regulatory genes opposing Polycomb-mediated repression, with enhanced expression of EZH2 contributing to pathogenesis. Here we report that coordinated targeting of EZH2 and the retinoic acid signaling pathway caused the cytotoxic effects on bladder cancer cells by inducing a synergistic reduction in proliferative potential that was associated with increased apoptosis and cell cycle arrest in a cooperative manner. Moreover, combined treatment caused the modulation of the expression of certain genes towards an anti-oncogenic profile, as reflected by the stimulation of marker genes associated with apoptosis and differentiation. To investigate the effects on gene regulatory networks associated with fenretinide and GSK-126 treatments at a genome-wide scale, we performed gene expression profiling analysis using data obtained from RNA-seq of T24 cells. We further portrayed a molecular mechanism whereby EZH2 maintains H3K27me3-mediated repression of certain genes associated with unfolded protein response and some metabolic processes. This work also characterized an apoptotic program centered on the master transcriptional regulators C/EBPβ and CHOP. Our findings encourage the design of novel treatments employing retinoids coupled with EZH2 inhibitors in bladder carcinoma.

2024-01-17 | GSE229015 | GEO

EZH2 and BCL6 cooperate to assemble CBX8-BCOR Polycomb complex to repress bivalent promoters, mediate germinal center formation and promote lymphomagenesis [RNA-seq]

Project description:EZH2 mediates the humoral immune response and drives lymphomagenesis through de novo formation of bivalent chromatin domains and critical germinal center (GC) B cell promoters. We show that such formation is dependent on the presense of BCL6 and the presence of non-canonical PRC1-BCOR complex. We observe that BCL6 and EZH2 cooperate to accelerate diffuse large B cell lymphoma (DLBCL) development and combinatorial targeting of these repressors results in enhanced anti-lymphoma activity in vitro, in vivo, and in primary human DLBCLs. DLBCL cell lines treated with BCL6 inhibitor 79-6.1085

2016-07-20 | E-GEOD-73109 | biostudies-arrayexpress

EZH2 and BCL6 cooperate to assemble CBX8-BCOR Polycomb complex to repress bivalent promoters, mediate germinal center formation and promote lymphomagenesis [ChIP-seq]

Project description:The EZH2 histone methyltransferase mediates the humoral immune response and drives lymphomagenesis through de novo formation of bivalent chromatin domains at critical germinal center (GC) B cell promoters. Herein we show that the actions EZH2 in driving GC formation and lymphoma precursor lesions are dependent on the presence of the BCL6 transcriptional repressor, both of which are in turn dependent on the presence of non-canonical PRC1-BCOR complex. BCL6-BCOR complexes assemble preferentially at bivalent promoters in an H3K27me3-dependent manner. We observe specific induction of the CBX8 chromodomain protein in GC B cells. CBX8 binds to H3K27me3 at bivalent promoters and is required for stable association of BCOR complex and its histone modifications. CBX8 loss of function in B cells phenocopies loss of EZH2 and H3K27me3. Moreover, oncogenic BCL6 and EZH2 cooperate to accelerate diffuse large B cell lymphoma (DLBCL) development and combinatorial targeting of these repressors results in enhanced anti-lymphoma activity in vitro, in vivo and in primary human DLBCLs. KDM2B ChIP-sequencing of OCI-Ly1 cells

2016-07-20 | E-GEOD-81623 | biostudies-arrayexpress

Affinify Purification of EZH2 and phosphodeficient EZH2 identifies phosphorylation dependent interactions of EZH2

Project description:Overexpression of EZH2 in estrogen receptor negative (ER-) breast cancer promotes metastasis. EZH2 has been mainly studied as the catalytic component of the Polycomb Repressive Complex 2 (PRC2) that mediates gene repression by trimethylating histone H3 at lysine 27 (H3K27me3). However, how EZH2 drives metastasis despite the low H3K27me3 levels observed in ER- breast cancer is unknown. We have shown that in human invasive carcinomas and distant metastases, cytoplasmic EZH2 phosphorylated at T367 is significantly associated with ER- disease and low H3K27me3 levels. Here, we explore the interactome of EZH2 and of a phosphodeficient mutant EZH2_T367A. We identified novel interactors of EZH2, and identified interactions that are dependent on the phosphorylation and cellular localization of EZH2 that may play a role in EZH2 dependent metastatic progression.

2018-07-03 | PXD010073 | Pride

EZH2 and BCL6 cooperate to assemble CBX8-BCOR Polycomb complex to repress bivalent promoters, mediate germinal center formation and promote lymphomagenesis [RNA-seq]

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The transcription factors ZEB2 and T-bet cooperate to program cytotoxic T cell terminal differentiation

Project description:T-bet is critical for cytotoxic T lymphocyte (CTL) differentiation, but it is unclear how it operates in a graded manner in the formation of both terminal effector and memory precursor cells during infection. We find that at high concentrations T-bet induced expression of Zeb2 mRNA, which then triggered CTLs to adopt terminally differentiated states. ZEB2 and T-bet cooperate to switch on a terminal CTL differentiation program, while simultaneously repressing genes necessary for central memory CTL development. Chromatin immunoprecipitation sequencing (ChIP-seq) showed that a large proportion of these genes were bound by T-bet, and this binding was altered by ZEB2 deficiency. Furthermore, T-bet overexpression could not fully bypass ZEB2 function. Thus, the coordinated actions of T-bet and ZEB2 outline a novel genetic pathway that forces commitment of CTLs to terminal differentiation, thereby restricting their memory cell potential. Splenocyte derived CD8+ T cells from C57BL/6 mice with either a wildtype (WT) (GzmB-Cre Zeb2+/+) or GzmB-Cre Zeb2-fl/fl (Zeb2-/-) backgrounds, following 8 days post infection with LCMV-Armstrong, were subsetted into KLRG1-hi/IL-7R-lo populations (terminal effectors, TE) or KLRG1-lo/IL-7R-hi (memory precursors, MP) populations. Four experimental groups, each with 3 samples, comprised of TE+WT, MP+WT, TE+ZEB2-/-, and MP+ZEB2-/-, were profiled for gene expression utilizing a polyA RNA prep and hybridized to the Illumina microarray platform IlluminaWG-v2.0.

2015-09-15 | E-GEOD-72408 | biostudies-arrayexpress

EZH2 and BCL6 cooperate to assemble CBX8-BCOR Polycomb complex to repress bivalent promoters, mediate germinal center formation and promote lymphomagenesis [ChIP-seq]

2016-07-20 | GSE81623 | GEO

Architectural proteins and pluripotency factors cooperate to orchestrate the transcriptional response of hESCs to temperature stress

Project description:Architectural proteins and pluripotency factors cooperate to orchestrate the transcriptional response of hESCs to temperature stress

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The transcription factors ZEB2 and T-bet cooperate to program cytotoxic T cell terminal differentiation

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Epigenetic modifiers MMSET and EZH2 physically interact and cooperate to support Multiple Myeloma pathophysiology

Project description:Epigenetic modifiers MMSET and EZH2 physically interact and cooperate to support Multiple Myeloma pathophysiology

| PRJNA1013589 | ENA