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Protein interactions within PLEIOHOMEOTIC-repressive complex are critical for its recruitment to Polycomb target genes (Human)

ABSTRACT: PcG proteins are critical epigenetic regulators of development. Here we have determined genomic distributions of H3K27me3, BMI1, MEL18, EZH2 and YY1 proteins on chromosomes 8, 11,12 of cultured human NTERA-2 cl.D1 cells by hybridization of ChIP products with tiling microarrays.

ORGANISM(S): Homo sapiens

PROVIDER: GSE41853 | GEO | 2014/06/07

SECONDARY ACCESSION(S): PRJNA178659

REPOSITORIES: GEO

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Protein interactions within PLEIOHOMEOTIC-repressive complex are critical for its recruitment to Polycomb target genes (Human)

Project description:PcG proteins are critical epigenetic regulators of development. Here we have determined genomic distributions of H3K27me3, BMI1, MEL18, EZH2 and YY1 proteins on chromosomes 8, 11,12 of cultured human NTERA-2 cl.D1 cells by hybridization of ChIP products with tiling microarrays. genomic distributions of H3K27me3, BMI1, MEL18, EZH2 and YY1 proteins on chromosomes 8, 11,12 of cultured human NTERA-2 cl.D1 cells by hybridization of ChIP products with tiling microarrays.

2014-06-07 | E-GEOD-41853 | biostudies-arrayexpress

Pilot screen for human PRC1 targeting elements (PTEs)

Project description:PcG proteins are critical epigenetic regulators of development. Here we compared genomic distributions of MEL18 and SUZ12 in NTERA-2 cells to search for sites with unusually high presence of PRC1 compared to that of PRC2 and H3K27me3.

2017-10-25 | GSE101538 | GEO

Expression data from intestinal epithelial cells (IECs) [Mouse430_2 array]

Project description:Polycomb group (PcG) proteins are epigenetic silencers whose dysregulation is frequently linked to cancer via mechanisms that remain unclear. Using conditional knock-out mice in a colitis-associated colorectal cancer (CAC) model, we found that Bmi1 and Mel18 are important initiation and maintenance factors during CAC tumorigenesis. Epithelial depletion of both Bmi1 and Mel18, but not either gene alone, significantly reduces tumor growth and multiplicity. We used microarrays to detail the global program of gene expression In DKO, Bmi1ΔIEC, Mel18ΔIEC and WT mice and identified distinct classes of up-regulated genes during this process.

2017-11-11 | GSE57641 | GEO

Expression data from intestinal epithelial cells (IECs) [MoGene-1_0-st array]

2017-11-11 | GSE57640 | GEO

Protein interactions within PLEIOHOMEOTIC-repressive complex are critical for its recruitment to Polycomb target genes (Fruit Fly)

Project description:PcG proteins are critical epigenetic regulators of development. Here we have determined genomic distributions of PHO, PHOL and SFMBT proteins in cultured Drosophila cells by hybridization of ChIP products with tiling microarrays. genomic distributions of PHO, PHOL and SFMBT proteins in cultured Drosophila cells by hybridization of ChIP products with tiling microarrays.

2014-06-07 | E-GEOD-41852 | biostudies-arrayexpress

Protein interactions within PLEIOHOMEOTIC-repressive complex are critical for its recruitment to Polycomb target genes (Fruit Fly)

2014-06-07 | GSE41852 | GEO

A Region of Human HoxD that Confers Polycomb-Group Responsiveness

Project description:Polycomb group (PcG) proteins are essential for accurate axial body patterning during embryonic development. PcG-mediated repression is conserved in metazoans and is targeted in Drosophila by Polycomb response elements (PREs). Targeting sequences in humans have not been described. While analyzing chromatin architecture in the context of human embryonic stem cell (hESC) differentiation, we discovered a 1.8kb region between HOXD11 and HOXD12 (D11.12) that is associated with PcG proteins, is nuclease hypersensitive, and shows alteration as hESCs differentiate. D11.12 repressed luciferase expression from a reporter construct both before and after differentiation of mesenchymal stem cells into adipocytes. Full repression by D11.12 required a highly conserved region and YY1 binding sites. Repression relied upon PcG proteins Bmi1 and Eed and a YY1-interacting partner, RYBP. We conclude that D11.12 is a Polycomb-dependent regulatory region with similarities to Drosophila PREs, indicating conservation in the mechanisms that target PcG function in mammals and flies. Data contains microarray measurements of the MNase-digested mononucleosomal fragments in hES cells, derived MSCs, osteoblasts and adipocytes. The ChIP-chip data includes Suz12, Bmi1 and H3K27me3 measurements in MSCs and adipocytes.

2010-06-19 | E-GEOD-19046 | biostudies-arrayexpress

A Region of Human HoxD that Confers Polycomb-Group Responsiveness

2009-11-19 | GSE19046 | GEO

A cDNA microarray analysis was performed on shRNA KDs of EZH2, SUZ12, BMI1, or CBX8 HepG2 cells.

Project description:Polycomb group (PcG) proteins including EZH2, SUZ12 ,BMI1,CBX8 and so on, which specifically catalyze trimethylation of histone 3 lysine 27 (H3K27me3), and methylated H3K27 can be recognized by other specific binding proteins to compress chromatin structure, leading to the transcriptional repression of the target genes. To explore a potential functional implication of PcG components in HCC, we stably transfected HepG2 cells with either vectors or constructs expressing shRNA that specifically targets EZH2, SUZ12, BMI1, or CBX8. A cDNA microarray analysis was performed on shRNA KDs of EZH2, SUZ12, BMI1, or CBX8 HepG2 cells. To obtain a broader understanding of the molecular network of PcG in HCC, the whole genome microarray expression profiling was performed on shRNA KDs of EZH2, SUZ12, BMI1, or CBX8 HepG2 cells. Comparison of gene expression results from shRNA KDs of EZH2, SUZ12, BMI1 or CBX8 HepG2 cells.

2014-01-16 | E-GEOD-54108 | biostudies-arrayexpress

A cDNA microarray analysis was performed on shRNA KDs of EZH2, SUZ12, BMI1, or CBX8 HepG2 cells.

2014-01-16 | GSE54108 | GEO

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