GEO DataSets

(Submitter supplied) The Polycomb repressive complex 2 (PRC2) catalyzes H3K27 methylation across the genome, which through involvement in transcriptional regulation is critical in establishment of cell identity. Because of its essential function during development and in cancer, understanding the establishment of genome-wide H3K27 methylation patterns has been the focus of intense investigation. PRC2 methylation activity is abundant and dispersed throughout the genome, but highest activity is specifically directed to a subset of target regions that are stably occupied by the complex and highly enriched for H3K27me3. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19057

87 Samples

Download data: BED, TXT

(Submitter supplied) The core Polycomb Repressor Complex 2 (PRC2) is composed of Ezh1/2, Suz12, Eed and is responsible for mediating both H3K27me2 and H3K27me3. However, the mechanisms by which PRC2 demarcates these two repressive modifications in the genome are unknown. In a functional screen, we identified the H3K36 dimethyltransferase Nsd1 as a modulator of PRC2-mediated di- and trimethylation of H3K27. ChIP-Seq analysis following the depletion of Nsd1 revealed a global reduction in H3K36me2 and an increase in H3K27me3 at sites previously marked by H3K27me2. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL9250

9 Samples

Download data: BW

(Submitter supplied) Polycomb Repressive Complex 2 (PRC2) is composed of EED, SUZ12, and EZH1/2 and mediates mono-, di- and tri-methylation of Histone H3 at Lysine 27. While at least two subcomplexes exist, defined by their specific accessory proteins, termed PRC2.1 (Polycomb-like proteins 1-3, EPOP and PALI1/2) and PRC2.2 (AEBP2 and JARID2), little is known about their differential functions. Here, we show that PRC2.1 and PRC2.2 share the majority of target genes in mouse embryonic stem cells (ESCs). The loss of all three Polycomb-like proteins is sufficient to destabilise and evict PRC2.1 from chromatin, but also leads to reduced PRC2.2 and H3K27me3 at most Polycomb domains. However, the combined loss of PRC2.1 and PRC2.2 is necessary to completely remove H3K27me3 at broad Polycomb domains such as the Hox loci. Our data support a model in which the specific accessory proteins within PRC2.1 and PRC2.2 co-operate to direct and maintain H3K27me3, via both synergistic and independent mechanisms.

Organism:

Drosophila melanogaster; Mus musculus; Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL25537 GPL19415

37 Samples

Download data: BW

(Submitter supplied) The Polycomb repressive complexes PRC1 and PRC2 act non-redundantly at target genes to maintain transcriptional programs and ensure cellular identity. PRC2 methylates lysine 27 on histone H3 (H3K27me), while PRC1 mono-ubiquitinates histone H2A at lysine 119 (H2Aub1). Here we present engineered mouse embryonic stem cells (ESCs) targeting the PRC2 subunits EZH1 and EZH2 to discriminate between contributions of distinct H3K27 methylation states and the presence of PRC2/1 at chromatin. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL24247 GPL13112

50 Samples

Download data: GAPPEDPEAK, NARROWPEAK, TXT

(Submitter supplied) Here we utilize a forward genetics approach in Neurospora crassa to identify novel effectors of Polycomb repression. We recovered two mutant alleles of a gene (NCU04278), which we determined encodes a PRC2 accessory subunit (PAS). PAS is not essential for all H3K27 methylation, but rather its absence leads to losses of H3K27 methylation concentrated near chromosome ends.

Organism:

Neurospora crassa

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL23150

8 Samples

Download data: BIGWIG, TXT

(Submitter supplied) Polycomb repressive complex 2 (PRC2) catalyzes trimethylation of histone H3 on lysine 27 and is required for normal development of complex eukaryotes. The requirement for H3K27me3 in various aspects of mammalian differentiation is not clear. Though associated with repressed genes, the modification is not sufficient to induce gene repression, and in some instances is not required. To examine the role of the modification in mammalian differentiation, we blocked trimethylation of H3K27 with both a small molecule inhibitor, GSK343, and by introducing a point mutation into EZH2, the catalytic subunit of PRC2. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing; Other

Platform:

GPL13112

69 Samples

Download data: BED, BIGWIG, TXT

(Submitter supplied) The Polycomb repressive complex 2 (PRC2) catalyzes H3K27 methylation and is required for maintaining transcriptional patterns and cellular identity, but the specification and maintenance of genomic PRC2 binding and H3K27 methylation patterns remain incompletely understood. Epigenetic mechanisms have been proposed, wherein pre-existing H3K27 methylation directs recruitment and regulates the catalytic activity of PRC2 to support its own maintenance. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing

Platforms:

GPL19057 GPL13112

71 Samples

Download data: TXT

(Submitter supplied) Polycomb Repressive Complex 2 (PRC2) plays an essential role in gene repression during development, catalysing H3 lysine 27 trimethylation (H3K27me3). MTF2 in the PRC2.1 sub-complex, and JARID2 in PRC2.2, are central in core PRC2 recruitment to target genes in mouse embryonic stem cells (mESCs). To investigate how PRC2.1 and PRC2.2 cooperate, we combined Polycomb mutant mESCs with chemical inhibition of binding to H3K27me3. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19057

69 Samples

Download data: BAM

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL17021

42 Samples

Download data: BW

(Submitter supplied) Polycomb repressive complex 2 (PRC2-EZH2) methylates histone H3 at lysine 27 (H3K27). PRC2 is required to maintain gene repression during development and differentiation and misregulation of PRC2 is linked to a range of neoplastic malignancies, activities that are believed to involve H3K27 methylation. The full spectrum of non-histone substrates of PRC2, however, is not known, and it is not known which other substrates might also contribute to the biological functions of PRC2. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL17021

4 Samples

Download data: BW

(Submitter supplied) Polycomb repressive complex 2 (PRC2-EZH2) methylates histone H3 at lysine 27 (H3K27) and is required to maintain gene repression during development. Misregulation of PRC2 is linked to a range of neoplastic malignancies, which is believed to involve methylation of H3K27. However, the full spectrum of non-histone substrates of PRC2 that might also contribute to PRC2 function is not known. We characterized the target recognition specificity of PRC2 and used the resultant data to screen for novel potential targets. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

10 Samples

Download data: BW, TXT

(Submitter supplied) Polycomb repressive complex 2 (PRC2-EZH2) methylates histone H3 at lysine 27 (H3K27) and is required to maintain gene repression during development. Misregulation of PRC2 is linked to a range of neoplastic malignancies, which is believed to involve methylation of H3K27. However, the full spectrum of non-histone substrates of PRC2 that might also contribute to PRC2 function is not known. We characterized the target recognition specificity of PRC2 and used the resultant data to screen for novel potential targets. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

28 Samples

Download data: BW, TXT

(Submitter supplied) Background: Polycomb repressive complex 2 (PRC2) is responsible for establishing and maintaining histone H3K27 methylation during cell differentiation and proliferation. H3K27 can be mono-, di-, or tri-methylated, resulting in differential gene regulation. However, it remains unknown how PRC2 specifies the degree and biological effects of H3K27 methylation within a given cellular context. One way to determine PRC2 specificity may be through alternative splicing of Ezh2, PRC2’s catalytic subunit, during cell differentiation and tissue maturation. more...

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL13112

10 Samples

Download data: BED, BROADPEAK, TXT

(Submitter supplied) The pluripotent ground state is defined as a basal state free of epigenetic restrictions, which influence lineage specification. While naive embryonic stem cells (ESCs) can be maintained in a hypomethylated state with open chromatin when grown using two small-molecule inhibitors (2i)/leukemia inhibitory factor (LIF), in contrast to serum/LIF-grown ESCs that resemble early post-implantation embryos, broader features of the ground-state pluripotent epigenome are not well understood. more...

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing; Methylation profiling by high throughput sequencing

Platforms:

GPL19057 GPL13112

19 Samples

Download data: BED, BW

(Submitter supplied) Our study defines nucleation and spreading regions for Polycomb repressive complex 2 (PRC2), demonstrating the principle of PRC2 domain formation in mammals. We elucidate the role of genome architecture in formation of these domains and identify JARID2 and MTF2 as being crucial for full recruitment of PRC2 to chromatin.

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19057

19 Samples

Download data: BW

(Submitter supplied) Our study defines nucleation and spreading regions for Polycomb repressive complex 2 (PRC2), demonstrating the principle of PRC2 domain formation in mammals. We elucidate the role of genome architecture in formation of these domains and identify JARID2 and MTF2 as being crucial for full recruitment of PRC2 to chromatin.

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL17021 GPL19057

26 Samples

Download data: BW

(Submitter supplied) Our study defines nucleation and spreading regions for Polycomb repressive complex 2 (PRC2), demonstrating the principle of PRC2 domain formation in mammals. We elucidate the role of genome architecture in formation of these domains and identify JARID2 and MTF2 as being crucial for full recruitment of PRC2 to chromatin. This SuperSeries is composed of the SubSeries listed below.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing; Other

Platforms:

GPL19057 GPL17021

107 Samples

Download data: BEDGRAPH, BW

(Submitter supplied) Our study defines nucleation and spreading regions for Polycomb repressive complex 2 (PRC2), demonstrating the principle of PRC2 domain formation in mammals. We elucidate the role of genome architecture in formation of these domains and identify JARID2 and MTF2 as being crucial for full recruitment of PRC2 to chromatin.

Organism:

Mus musculus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17021

13 Samples

Download data: XLS

(Submitter supplied) Our study defines nucleation and spreading regions for Polycomb repressive complex 2 (PRC2), demonstrating the principle of PRC2 domain formation in mammals. We elucidate the role of genome architecture in formation of these domains and identify JARID2 and MTF2 as being crucial for full recruitment of PRC2 to chromatin.

Organism:

Mus musculus

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL19057 GPL17021

25 Samples

Download data: BW

(Submitter supplied) Our study defines nucleation and spreading regions for Polycomb repressive complex 2 (PRC2), demonstrating the principle of PRC2 domain formation in mammals. We elucidate the role of genome architecture in formation of these domains and identify JARID2 and MTF2 as being crucial for full recruitment of PRC2 to chromatin.

Organism:

Mus musculus

Type:

Other

Platform:

GPL17021

24 Samples

Download data: BEDGRAPH