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Acetylation enhances TET2 function in protecting against abnormal DNA methylation during oxidative stress

ABSTRACT: Acetylation enhances TET2 function in protecting against abnormal DNA methylation during oxidative stress

PROVIDER: PRJNA321516 | ENA |

REPOSITORIES: ENA

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Acetylation enhances TET2 function in protecting against abnormal DNA methylation during oxidative stress [gene expression]

Project description:Transcriptional profiling of A2780 cells with genetic TET2 knockout, generated by CRISPR. The aim was to identify genes affected by TET2 KO. Three individual KO clones were profiled. Control cells were cells that infected with control sgRNA.

2016-12-31 | GSE79808 | GEO

Acetylation enhances TET2 function in protecting against abnormal DNA methylation during oxidative stress [A2780 TET2 KO - methylation]

Project description:Genome wide DNA methylation profiling of A2780 control cells (Scr_1 and Scr_2), and A2780 TET2 KO clones (KO1.1, KO1.36, and KO2.32). The Illumina’s Infinium Human Methylation450 Beadchip Kit (WG-314-1001) was used to obtain DNA methylation profiles across approximately 450,000 CpGs.

2016-12-31 | GSE83751 | GEO

Acetylation Enhances TET2 Function in Protecting against Abnormal DNA Methylation during Oxidative Stress.

Project description:TET proteins, by converting 5-methylcytosine (5mC) to 5-hydroxymethylcytosine (5hmC), are hypothesized, but not directly shown, to protect promoter CpG islands (CGIs) against abnormal DNA methylation (DNAm) in cancer. We define such a protective role linked to DNA damage from oxidative stress (OS) known to induce this abnormality. TET2 removes aberrant DNAm during OS through interacting with DNA methyltransferases (DNMTs) in a "Yin-Yang" complex targeted to chromatin and enhanced by p300 mediated TET2 acetylation. Abnormal gains of DNAm and 5hmC occur simultaneously in OS, and knocking down TET2 dynamically alters this balance by enhancing 5mC and reducing 5hmC. TET2 reduction results in hypermethylation of promoter CGIs and enhancers in loci largely overlapping with those induced by OS. Thus, TET2 indeed may protect against abnormal, cancer DNAm in a manner linked to DNA damage.

| S-EPMC5260804 | biostudies-literature

Acetylation enhances TET2 function in protecting against abnormal DNA methylation during oxidative stress [shTET2 - H2O2 - methylation]

Project description:Genome wide DNA methylation profilings (Bisulfite (BS), or oxidative bisulfite (oxBS)) were done for A2780 cells 1) infected with control virus, no H2O2 (Scr_mock) treatment, 2) infected with control virus with H2O2 treatment (30 min plus 2.5 h resting) (Scr_H2O2), and 3) infected with shTET2 virus, with H2O2 treatment (30 min plus 2.5 h resting) (shTET2_H2O2). Each genomic DNA was splitted equally to two aliquots. One aliquote was subjected to oxidation (oxBS) and one to mock oxidation (BS) prior to bisulfite treatment (CEGX protocol). The Illumina’s Infinium Human Methylation450 Beadchip Kit (WG-314-1001) was used to obtain DNA methylation profiles across approximately 450,000 CpGs. 5hmC levels were calculated by subtracting oxBS values from BS values.

2016-12-31 | GSE83750 | GEO

Acetylation enhances TET2 function in protecting against abnormal DNA methylation during oxidative stress

Project description:This SuperSeries is composed of the SubSeries listed below.

2016-12-31 | GSE81428 | GEO

Homo sapiens

Project description:Acetylation enhances TET2 function in protecting against abnormal DNA methylation during oxidative stress [A2780 TET2 KO - methylation]

| PRJNA326928 | ENA

Homo sapiens

Project description:Acetylation enhances TET2 function in protecting against abnormal DNA methylation during oxidative stress [gene expression]

| PRJNA317022 | ENA

Homo sapiens

Project description:Acetylation enhances TET2 function in protecting against abnormal DNA methylation during oxidative stress [shTET2 - H2O2 - methylation]

| PRJNA326927 | ENA

Acetylation enhances TET2 function in protecting against abnormal DNA methylation during oxidative stress [A2780 TET2KD damage 3h - methylation]

Project description:Genome wide DNA methylation profiling of A2780 cells 1) infected with control virus, no H2O2 (Scr_mock), 2) infected with control virus with H2O2 treatment (30 min plus 2.5 h resting) (Scr_H2O2), 3) infected with shTET2 virus, no H2O2 (shTET2_mock), and 4) infected with shTET2 virus, with H2O2 treatment (30 min plus 2.5 h resting) (shTET2_H2O2, two biological replicates). The Illumina’s Infinium Human Methylation450 Beadchip Kit (WG-314-1001) was used to obtain DNA methylation profiles across approximately 450,000 CpGs.

2016-12-31 | GSE81427 | GEO

Acetylation enhances TET2 function in protecting against abnormal DNA methylation during oxidative stress [A2780 damage time points - methylation]

Project description:Genome wide DNA methylation profiling of A2780 cells untreated (mock), treated with H2O2 for 30 min (H2O2 30 min), or treated with H2O2 for 30 min with additional 2.5 hour resting ( H2O2 3h) . The Illumina’s Infinium Human Methylation450 Beadchip Kit (WG-314-1001) was used to obtain DNA methylation profiles across approximately 450,000 CpGs.

2016-12-31 | GSE81426 | GEO

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