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

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus

PROVIDER: GSE39323 | GEO | 2013/01/06

SECONDARY ACCESSION(S): PRJNA170601

REPOSITORIES: GEO

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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 [ChIP-Seq]

Project description: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.

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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.

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Functional role of Tet-mediated RNA hydroxymethylcytosine in mouse ES cells and during differentiation.

Project description:Tet-enzyme-mediated 5-hydroxymethylation of cytosines in DNA plays a crucial role in mouse embryonic stem cells (ESCs). In RNA also, 5-hydroxymethylcytosine (5hmC) has recently been evidenced, but its physiological roles are still largely unknown. Here we show the contribution and function of this mark in mouse ESCs and differentiating embryoid bodies. Transcriptome-wide mapping in ESCs reveals hundreds of messenger RNAs marked by 5hmC at sites characterized by a defined unique consensus sequence and particular features. During differentiation a large number of transcripts, including many encoding key pluripotency-related factors (such as Eed and Jarid2), show decreased cytosine hydroxymethylation. Using Tet-knockout ESCs, we find Tet enzymes to be partly responsible for deposition of 5hmC in mRNA. A transcriptome-wide search further reveals mRNA targets to which Tet1 and Tet2 bind, at sites showing a topology similar to that of 5hmC sites. Tet-mediated RNA hydroxymethylation is found to reduce the stability of crucial pluripotency-promoting transcripts. We propose that RNA cytosine 5-hydroxymethylation by Tets is a mark of transcriptome flexibility, inextricably linked to the balance between pluripotency and lineage commitment.

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Hira-dependent histone H3.3 deposition facilitates PRC2 recruitment at developmental loci in ES cells

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