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GSE70077
Mus musculus
6 Downloadable Samples
Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Polycomb group (PcG) proteins play a pivotal role in silencing developmental genes and help to maintain various stem and precursor cells and regulate their differentiation. PcG factors also regulate dynamic and complex regional specification, particularly in mammals, but this activity is mechanistically not well understood. In this study, we focused on proximal-distal (PD) patterning of the mouse forelimb bud to elucidate how PcG factors contribute to a regional specification process that depends on developmental signals. Depletion of the RING1 proteins RING1A (RING1) and RING1B (RNF2), which are essential components of Polycomb repressive complex 1 (PRC1), led to severe defects in forelimb formation along the PD axis. We show that preferential defects in early distal specification in Ring1A/B-deficient forelimb buds accompany failures in the repression of proximal signal circuitry bound by RING1B, including Meis1/2, and the activation of distal signal circuitry in the prospective distal region. Additional deletion of Meis2 induced partial restoration of the distal gene expression and limb formation seen in the Ring1A/B-deficient mice, suggesting a crucial role for RING1-dependent repression of Meis2 and likely also Meis1 for distal specification. We suggest that the RING1-MEIS1/2 axis is regulated by early PD signals and contributes to the initiation or maintenance of the distal signal circuitry.
Publication Title
RING1 proteins contribute to early proximal-distal specification of the forelimb bud by restricting Meis2 expression.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 6 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Polycomb group (PcG) proteins play a pivotal role in silencing of development-related genes and contribute to maintain various stem and precursor cells and regulate their differentiation. However, it is not well understood how PcG factors regulate dynamic and complex morphogenetic processes particularly in mammals. In this study, we focused on proximal-distal (PD) patterning of forelimb bud to elucidate how PcG factors contribute to regulation of morphogenetic processes that depends on developmental signals. Depletion of RING1 proteins, which are common components of both canonical and variant Polycomb repressive complex-1 (PRC1), led to dramatic deficiencies in forelimb formation.
Publication Title
RING1 proteins contribute to early proximal-distal specification of the forelimb bud by restricting Meis2 expression.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 4 Downloadable Samples
Illumina HiSeq 1000
Description
Using wild type and Ash1l deltaSET mutant embryonic stem cells, here we report differences of gene expression pattern under undifferentiated state and differentiated state. Interestingly, gene expression changes are frequently observed in a subset of gene group that is regulated by Polycomb group proteins. Overall design: Examination of 2 cell types in 2 different conditions.
Publication Title
Ash1l methylates Lys36 of histone H3 independently of transcriptional elongation to counteract polycomb silencing.
Sample Metadata Fields
Cell line, Treatment, Subject
View Samples- Mus musculus
- 27 Downloadable Samples
- Illumina HiSeq 2500
Description
The Polycomb Repressive Complex 2 (PRC2) is composed of core subunits SUZ12, EED, RBBP4/7 and EZH1/2, which together are responsible for all di- and tri- methylation of lysine 27 on Histone H3 (H3K27me2/3) in higher eukaryotes. While two distinct forms, PRC2.1 (containing one Polycomb-like protein) and PRC2.2 (containing AEBP2 and JARID2) exist, little is known about their differential functions or interplay. Here we report the discovery of a new family of vertebrate specific PRC2.1 associated proteins; 'PRC2 associated LCOR isoform 1' (PALI1) and PALI2, encoded by the LCOR and LCORL gene loci, respectively. PALI1 promotes PRC2 methyltransferase activity in vitro and in vivo and is essential for mouse development. We uncover an antagonistic relationship between the PALI-PRC2.1 and AEBP2-PRC2.2 subtypes and establish that both are required for balanced regulation of Polycomb target genes during differentiation. This discovery links the Polycomb epigenetic system with co-repressors and nuclear receptors in the regulation of cellular identity. Overall design: RNA seq analysis of Pali WT, Pali1 KO, Pali1/2 double KO, C129 WT and Aebp2 gene trap mouse embryonic stem cells at three time points (Day 0, Day 4 and Day 8) during embryoid body differentiation (EB). 30 samples are included. Biological duplicates are present.
Publication Title
A Family of Vertebrate-Specific Polycombs Encoded by the LCOR/LCORL Genes Balance PRC2 Subtype Activities.
Sample Metadata Fields
Specimen part, Subject
View Samples- Mus musculus
- 22 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Polycomb repressive complexes (PRCs) are important chromatin regulators of ES cell function. RYBP binds Polycomb H2A monoubiquitin ligases Ring1A and Ring1B, and has been suggested to participate in localizing Polycomb complexes to their targets. Moreover, constitutive inactivation of RYBP precludes ES cell formation. Here we have used ES cells conditionally deficient in RYBP to investigate RYBP function. Chromosome immunoprecipitation on a chip (ChIP-chip) of RYBP and microarray experiments were performed using wild type and knocked-out ES cells.
Publication Title
RYBP represses endogenous retroviruses and preimplantation- and germ line-specific genes in mouse embryonic stem cells.
Sample Metadata Fields
Specimen part, Disease
View Samples- Mus musculus
- 16 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
We used microarrays to investigate a global change in gene expression by conditional depletion of Rybp in mouse ES cells.
Publication Title
RYBP represses endogenous retroviruses and preimplantation- and germ line-specific genes in mouse embryonic stem cells.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 6 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Gene expression change by Yaf2 KD in wild type or RYBP KO ES cells.
Publication Title
RYBP represses endogenous retroviruses and preimplantation- and germ line-specific genes in mouse embryonic stem cells.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 2 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Polycomb group (PcG) proteins mediate heritable but reversible silencing of developmental regulator genes by modifying their chromatin configuration. Accumulating evidence documents a role for PcG proteins in regulating higher order chromatin structures likely by their clustering, however, underlying mechanisms and its impact on transcriptional regulation remain obscure. In this study, we found that subnuclear clustering of PRC1 at canonical PcG target genes depended on head-to-tail polymerization property of SAM domain of Phc2 and likely Phc1. We show that Phc2-SAM polymerization limits the dynamic nature of PRC1, thereby promotes stable association of PRC1 with PcG target genes and contributes to their robust silencing. Our findings suggest a novel model by which SAM polymerization of Phc2 modulates the structural organization of PcG complexes to enable robust yet reversible PcG-mediated repression during development.
Publication Title
SAM domain polymerization links subnuclear clustering of PRC1 to gene silencing.
Sample Metadata Fields
Specimen part, Disease
View Samples- Mus musculus
- 6 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Conditional ablation of Ezh2 in the neural crest lineage results in loss of the neural crest-derived mesenchymal derivatives. In this data sheet we determine gene expression analysis in Ezh2lox/lox and Wnt1Cre Ezh2lox/lox in E11.5 mouse BA1 cells.
Publication Title
Ezh2 is required for neural crest-derived cartilage and bone formation.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 2 Downloadable Samples
- Affymetrix Mouse Genome 430 2.0 Array (mouse4302)
Description
Polycomb group (PcG) proteins mediate heritable but reversible silencing of developmental regulator genes by modifying their chromatin configuration. Accumulating evidence documents a role for PcG proteins in regulating higher order chromatin structures likely by their clustering, however, underlying mechanisms and its impact on transcriptional regulation remain obscure. In this study, we found that subnuclear clustering of PRC1 at canonical PcG target genes depended on head-to-tail polymerization property of SAM domain of Phc2 and likely Phc1. We show that Phc2-SAM polymerization limits the dynamic nature of PRC1, thereby promotes stable association of PRC1 with PcG target genes and contributes to their robust silencing. Our findings suggest a novel model by which SAM polymerization of Phc2 modulates the structural organization of PcG complexes to enable robust yet reversible PcG-mediated repression during development.
Publication Title
SAM domain polymerization links subnuclear clustering of PRC1 to gene silencing.
Sample Metadata Fields
No sample metadata fields
View Samples