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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Ogt chromatin recruitment is mediated by TET proteins in mouse ES cells [ChIP-Seq]

ABSTRACT: These data include the genome wide location analysis of Ogt by ChIP of Ogt in mouse ES cells. Precipitation of formaldehyde cross-linked chromatin prepared from mouse ES cell using specific antibody against OGT and IgG as control.

ORGANISM(S): Mus musculus

SUBMITTER: Sri Ganesh Jammula

PROVIDER: E-GEOD-39154 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Tet proteins connect the O-linked N-acetylglucosamine transferase Ogt to chromatin in embryonic stem cells.

Vella Pietro P Scelfo Andrea A Jammula Sriganesh S Chiacchiera Fulvio F Williams Kristine K Cuomo Alessandro A Roberto Alessandra A Christensen Jesper J Bonaldi Tiziana T Helin Kristian K Pasini Diego D

Molecular cell 20130124 4

O-linked N-acetylglucosamine (O-GlcNAc) transferase (Ogt) activity is essential for embryonic stem cell (ESC) viability and mouse development. Ogt is present both in the cytoplasm and the nucleus of different cell types and catalyzes serine and threonine glycosylation. We have characterized the biochemical features of nuclear Ogt and identified the ten-eleven translocation (TET) proteins Tet1 and Tet2 as stable partners of Ogt in the nucleus of ESCs. We show at a genome-wide level that Ogt prefe ...[more]

PMID: 23352454

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Ogt chromatin recruitment is mediated by TET proteins in mouse ES cells

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2013-01-06 | E-GEOD-39323 | biostudies-arrayexpress

Ogt chromatin recruitment is mediated by TET proteins in mouse ES cells [expression array]

Project description:O-linked N-acetylglucosamine (O-GlcNAc ) transferase (OGT) activity is essential for embryonic stem (ES) cell viability and mouse development. OGT is present in both cytoplasm and nucleus of different cell types and mediates serine or threonine glycosylation. The Ogt gene locus resides on the X-chromosome and its activity is required for the viability of male ES cells. Using Ogt conditional knock out (KO) ES cells it was shown the failure of establishing stable KO ES clones further suggesting that Ogt activity is required for ES cell self-renewal and pluripotency. For understanding these changes, we performed global gene expression upon silencing of Ogt mediated by esiRNA in mouse Embryonic Stem Cells. Total RNA was extracted from E14 ES cells (derived from Ola129 mice) transiently transfected with Ogt specific and control esiRNA oligos 48 hrs. post-transfection.

2013-01-06 | E-GEOD-39321 | biostudies-arrayexpress

Polycomb-dependent H3K27me1 and H3K27me2 characterization in mouse ES cells (E36 with H3K27ac, H3K27me1, and H3K4me1/3)

Project description:These data include the genome wide location analysis of H3K27me1/2/ac and H3K4me1/3 by ChIP in mouse ES cells. Precipitation of formaldehyde cross-linked chromatin prepared from mouse ES cell using specific antibodies against Histone H3 and its specific modifications. Rabbit IgG were used as control.

2013-12-05 | E-GEOD-39496 | biostudies-arrayexpress

OGT, H2B S112GlcNAc, TET2 ChIP-seq results

Project description:TET2 directly interacts with OGT, which is important for the chromatin association of OGT in vivo. Although this specific interaction does not regulate the enzymatic activity of TET2, it facilitates OGT-dependent histone O-GlcNAcylation. Moreover, OGT associates with TET2 at transcription starting sites (TSS). Down-regulation of TET2 reduces the amount of H2B S112 GlcNAc marks in vivo, which are associated with gene transcription regulation. We found that OGT interacts with TET2 tightly. Using ChIP-seq with specific antibodies, we tested the co-localization of TET2 and OGT in genome level.

2012-12-11 | E-GEOD-41720 | biostudies-arrayexpress

Ogt chromatin recruitment is mediated by TET proteins in mouse ES cells [expression array]

2013-01-06 | GSE39321 | GEO

Yy1 occupancy of mouse ES cell genome

Project description:These data include the genome wide location analyses of Yy1 by bioChIPs of Fbio-Yy1. Streptavidin precipitation of formaldehyde cross-linked chromatin prepared from Fbio-Yy1 and control expressing mouse ES cells

2012-01-04 | E-GEOD-31785 | biostudies-arrayexpress

Ogt chromatin recruitment is mediated by TET proteins in mouse ES cells [ChIP-Seq]

Project description:These data include the genome wide location analysis of Ogt by ChIP of Ogt in mouse ES cells.

2013-01-06 | GSE39154 | GEO

Polycomb-dependent H3K27me1 and H3K27me2 characterization in mouse ES cells (E14 and E36 with H3K27me1/2 and H3)

2013-12-11 | E-GEOD-40109 | biostudies-arrayexpress

TET2 and TET3 regulate GlcNAcylation and H3K4 methylation through OGT and SET1/COMPASS

Project description:TET proteins convert 5-methylcytosine to 5-hydroxymethylcytosine, an emerging dynamic epigenetic state of DNA that can influence transcription. Evidence has linked TET1 function to epigenetic repression complexes, yet mechanistic information, especially for the TET2 and TET3 proteins, remains limited. Here, we show a direct interaction of TET2 and TET3 with O-GlcNAc transferase (OGT). OGT does not appear to influence hmC activity, rather TET2 and TET3 promote OGT activity. TET2/3-OGT co-localize on chromatin at active promoters enriched for H3K4me3 and reduction of either TET2/3 or OGT activity results in a direct decrease in H3K4me3 and concomitant decreased transcription. Further, we show that Host Cell Factor 1 (HCF1), a component of the H3K4 methyltransferase SET1/COMPASS complex, is a specific GlcNAcylation target of TET2/3-OGT, and modification of HCF1 is important for the integrity of SET1/COMPASS. Additionally, we find both TET proteins and OGT activity promote binding of the SET1/COMPASS H3K4 methyltransferase, SETD1A, to chromatin. Finally, studies in Tet2 knockout mouse bone marrow tissue extend and support the data as decreases are observed of global GlcNAcylation and also of H3K4me3, notably at several key regulators of haematopoiesis. Together, our results unveil a step-wise model, involving TET-OGT interactions, promotion of GlcNAcylation, and influence on H3K4me3 via SET1/COMPASS, highlighting a novel means by which TETs may induce transcriptional activation. ChIP-Seq experiments were performed on Illumina HiScanSQ sequencer in wild-type HEK293T cells for H3K4me3 histone marks, O-GlcNAc and HCF1, for HT-TET2, HT-TET3 and HT-OGT in HEK293T cells overexpressing those three fusion proteins and in TET2 Kd HEK293T cells for H3K4me3 histone marks. ChIP-Seqs were also performed in mouse bone marrow tissues for H3K4me3 histone marks, O-GlcNAc, endogenous Tet2 and in Tet2 Ko bone marrow tissues for H3K4me3 histone marks.

2013-02-07 | E-GEOD-36620 | biostudies-arrayexpress

Genome wide binding sites of BAP1, HCF1 and OGT

Project description:We report the genome wide binding sites of BAP1, HCF1 and OGT in bone marrow derived macrophages. De-ubiquitinating enzyme BAP1 is mutated in a hereditary cancer syndrome with increased risk of mesothelioma and uveal melanoma. Somatic BAP1 mutations occur in various malignancies. We show that mouse Bap1 gene deletion is lethal during embryogenesis, but systemic or hematopoietic-restricted deletion in adults recapitulates features of human myelodysplastic syndrome (MDS). Knockin mice expressing BAP1 with a 3xFlag tag revealed that BAP1 interacts with host cell factor–1 (HCF-1), O-linked N-acetylglucosamine transferase (OGT), and the polycomb group proteins ASXL1 and ASXL2 in vivo. OGT and HCF-1 levels were decreased by Bap1 deletion, indicating a critical role for BAP1 in stabilizing these epigenetic regulators. Human ASXL1 is mutated frequently in chronic myelomonocytic leukemia (CMML) so an ASXL/BAP1 complex may suppress CMML. A BAP1 catalytic mutation found in a MDS patient implies that BAP1 loss of function has similar consequences in mice and humans. For BAP1, bone marrow derived macrophages were used differentiated from bone marrow cells of BAP1-3X Flag Tagged KI mice we generated. For OGT and HCF1, bone marrow derived macrophages were used from BAP1 WT mice.

2012-11-07 | E-GEOD-40723 | biostudies-arrayexpress

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