Mus musculus
Ontology highlight
ABSTRACT:
OTHER RELATED OMICS DATASETS IN: GSE69978
PROVIDER: PRJNA287271 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:ChIP-seq for H3K27me3 and Ring1B was performed in WT mESCs and mESCs containing catalytically inactive Ring1B (I53A mutant). Cells expressing catalytically inactive Ring1B maintain the spatial distribution of Ring1B and H3K27me3 but at reduced levels. These findings support the notion that PRC2 recruitment is, in part, dependent on H2A ubiquitination (H2AK119ub). Two biological replicates were performed for Ring1B and H3K27me3 ChIPs in WT and Ring1B I53A/I53A mouse ESCs. Input chromatin was sequenced for each replicate as a control for ChIP enrichment.
2015-09-20 | E-GEOD-69955 | biostudies-arrayexpress
Project description:ChIP-seq for H3K27me3 and Ring1B was performed in WT mESCs and mESCs containing catalytically inactive Ring1B (I53A mutant). Cells expressing catalytically inactive Ring1B maintain the spatial distribution of Ring1B and H3K27me3 but at reduced levels. These findings support the notion that PRC2 recruitment is, in part, dependent on H2A ubiquitination (H2AK119ub).
2015-09-20 | GSE69955 | GEO
Project description:ChIP-on-chip analysis was carried out to determine targets of Ring1B, Ring1A, H2AK119u1 and H3K27me3 in mouse ES cells.
2012-06-06 | GSE38504 | GEO
Project description:Catalytically inactive Ring1B maintains near wildtype levels of gene expression in mESCs
| PRJNA286873 | ENA
Project description:This experiment was designed to determine the extent of gene misregulation in mESCs containing catalytically dead Ring1B in comparison to mESCs lacking Ring1B. Polyadenylated mRNA was prepared from wildtype mESCs (WT), mESCs deficient for Ring1B (KO) and mESCs cells containing catalytically dead Ring1B (I53A). Each sample is represented by 3 biological replicate hybridisations.
2015-09-20 | E-GEOD-69824 | biostudies-arrayexpress
Project description:Two distinct Polycomb complexes, PRC1 and PRC2, collaborate to maintain epigenetic repression of key developmental loci in embryonic stem cells (ESCs). PRC1 and PRC2 have histone modifying activities, catalyzing mono-ubiquitination of histone H2A (H2AK119u1) and trimethylation of H3 lysine 27 (H3K27me3) respectively. Compared to H3K27me3, localization and role of H2AK119ub1 is not fully understood in ESCs. Here we present genome-wide H2AK119u1 maps in ESCs and identify a group of genes at which H2AK119u1 is deposited in a Ring1-dependent manner. These genes are a distinctive subset of genes with H3K27me3 enrichment and are the central targets of Polycomb silencing that are required to maintain ESC identity. We further show that the H2A ubiquitination activity of PRC1 is dispensable for its target binding and its activity to compact chromatin at Hox loci, but is indispensable for efficient repression of target genes and thereby ESC maintenance. These data demonstrate that multiple effector mechanisms including H2A ubiquitination and chromatin compaction combine to mediate PRC1-dependent repression of genes that are crucial for the maintenance of ESC identity. Utilization of these diverse effector mechanisms might provide a means to maintain a repressive state that is robust yet highly responsive to developmental cues during ES cell self-renewal and differentiation. This SuperSeries is composed of the following subset Series: GSE38224: Expression data from Ring1A(-/-);Ring1B(fl/fl);R26::CreERT2 ES cells expressing either of mock, WT or mutant Ring1B construct before or after OHT treatment GSE38504: ChIP-on-chip analysis of Ring1B, Ring1A, H2AK119u1 and H3K27me3 in mouse ES cells Total RNAs were extracted from the respective ES cells, and were subjected to microarray analysis using Affymetrix GeneChip Mouse Genome 430A 2.0 arrays. ChIP on chip analysis was carried out using the Mouse Promoter ChIP-on-chip Microarray Set (G4490A, Agilent, Palo Alto, Calif., USA). MEFs were subjected to ChIP assay using various antibodies. Purified immunoprecipitated and input DNA was subjected to T7 RNA polymerase-based amplification. Labeling, hybridization and washing were carried out according to the Agilent mammalian ChIP-on-chip protocol (ver.9.0). Scanned images were quantified with Agilent Feature Extraction software under standard conditions.
2012-06-11 | E-GEOD-38650 | biostudies-arrayexpress
Project description:Purpose: We aimed to determine whether the expression of either wild-type or catalytically inactive LSH, carrying a single point mutation in its ATP binding site (K237Q), could restore the levels and patterns of DNA methylation in Lsh-/- mouse embryonic fibroblasts (MEFs). Methods: Lsh-/- MEFs were transduced with lentiviral particles carrying empty pMSCV vector, pMSCV-LSH-3xFLAG and pMSCV-LSH K/Q-3xFLAG, respectively. Clonal cell lines were generated and tested for LSH expression. Two independent cell lines expressing wild-type LSH and two expressing LSH K/Q were used for further analyses and comparison with wild-type MEFs and Lsh-/- MEFs carrying the empty vector. Genomic DNA was purified from all six cell lines and methylated DNA immunoprecipitation (MeDIP) was performed as described in Weber et al., 2007, Nat Genetics. MeDIP libraries were generated and sequenced on Illumina HiSeq 2000 instrument. Results and conclusions: Our experiments demonstrate that the expression of wild-type LSH, but not the catalytically inactive LSH K/Q, in Lsh-/- MEFs leads to reestablishment of DNA methylation at repetitive sequences and unique developmentally regulated loci in a cell-autonomous manner. Analyses of DNA methylation upon expression of either wild-type or catalytically-inactive LSH in Lsh-/- mouse embryonic fibroblasts.
2016-07-21 | E-GEOD-64384 | biostudies-arrayexpress
Project description:Native ChIP on chip for H3K27me3 in murine ES cells comparing WT and Ring1B-/- cells. Paper Abstract: How polycomb group proteins repress gene expression in vivo is not known. Whilst histone modifying activities of the polycomb repressive complexes have been studied extensively, in vitro data has suggested a direct activity of the PRC1 complex in compacting chromatin. Here, we investigate higher-order chromatin compaction of polycomb targets in vivo. We show that polycomb repressive complexes are required to maintain a compact chromatin state at Hox loci in embryonic stem (ES) cells. There is specific decompaction in the absence of PRC2 or PRC1. This is due to PRC1, since decompaction occurs in Ring1B null cells that still have PRC2-mediated H3K27 methylation. Moreover, we show that the ability of Ring1B to restore a compact chromatin state, and to repress Hox gene expression in ES cells, is not dependent on its histone ubiquitination activity. We suggest that Ring1B-mediated chromatin compaction acts to directly limit transcription in vivo. Biological replicates: 3 independently grown, harvested,preplated, micrococcal nuclease digested and ChIP for H3K27me3. 5 Technical replicates.
2010-05-14 | E-GEOD-20213 | biostudies-arrayexpress
Project description:This experiment was designed to determine the extent of gene misregulation in mESCs containing catalytically dead Ring1B in comparison to mESCs lacking Ring1B.
2015-09-20 | GSE69824 | GEO
Project description:Effect of induced Methylation on Nucleosome positioning in yeast. Mnase digested DNA from a control strain, a strain expressing the 4 murine DNMTs or a strain expressing catalytically inactive murine DNMTs were extracted and sequenced on a hiseq 2000
2021-04-01 | E-MTAB-10254 | biostudies-arrayexpress