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Histone H3 lysine 4 and 27 trimethylation signatures associated with human Alzheimer’s disease

ABSTRACT: Histone H3 lysine 4 and 27 trimethylation signatures associated with human Alzheimer’s disease

PROVIDER: PRJNA804862 | ENA |

REPOSITORIES: ENA

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Histone H3 lysine 27 trimethylation of miRNA genes in HMEC and HMF

Project description:Normal cell type specific histone H3 lysine 27 trimethylation of miRNA genes. HMEC and HMF represent two distinct differentiated cell type present in mammary gland each with a distinct phenotype, a distinct epigenotype as well as distinct miRNA expression pattern. The aim of the study was to determine how epigenetic modifications including histone H3 lysine 27 trimethylation affect miRNA expression. Two cell types HMEC vs. HMF. Biological replicates: 3 pairs of HMEC-HMF of 3 distinct genotypes. Immunoprecipitation using anti-histone H3 trimethylated at lysine 27 (07-449, Millipore).

2011-04-05 | E-GEOD-28376 | biostudies-arrayexpress

Histone H3 lysine 27 trimethylation of miRNA genes in HMEC and HMF

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Quantitative histone mass spectrometry identifies elevated histone H3 lysine 27 trimethylation in melanoma

Project description:Normal cell growth is characterized by a regulated epigenetic program that drives cellular activities such as gene transcription, DNA replication and DNA damage repair. Perturbation of this epigenetic program can lead to events such as mis-regulation of gene transcription and diseases such as cancer. To begin to understand the epigenetic program correlated to the development of melanoma, we performed a quantitative mass spectrometric analysis of histone posttranslational modifications mis-regulated in melanoma cell culture. Aggressive melanoma cells were found to have elevated histone H3 lysine 27 trimethylation (H3K27me3) as well as over-expressed methyltransferase EZH2 that adds the specific modification. The altered epigenetic program that led to elevated H3K27me3 in melanoma cell culture was found to directly silence transcription of the tumor suppressor gene RUNX3. The elevated level of H3K27me3 and silencing of RUNX3 transcription was also validated in advanced stage human melanoma tissues. The study presented underscores the utility of using high resolution mass spectrometry to identify mis-regulated epigenetic programs in diseases such as cancer, which could ultimately lead to the identification of biological markers for diagnostic and prognostic applications.

2015-12-02 | PXD002471 | Pride

Histone H3 lysine 4 trimethylation of miRNA genes in HMEC and HMF

Project description:Normal cell type specific histone H3 lysine 4 trimethylation of miRNA genes. HMEC and HMF represent two distinct differentiated cell type present in mammary gland each with a distinct phenotype, a distinct epigenotype as well as distinct miRNA expression pattern. The aim of the study was to determine how epigenetic modifications including histone H3 lysine 4 trimethylation affect miRNA expression. Two cell types HMEC vs. HMF. Biological replicates: 3 pairs of HMEC-HMF of 3 distinct genotypes. Immunoprecipitation using anti-histone H3 trimethylated at lysine 4 (05-745, Upstate).

2011-04-05 | E-GEOD-28377 | biostudies-arrayexpress

Impact of Jmjd3 and Utx histone demethylases on Histone H3 lysine 27 trimethylation (H3K27Me3) in mature CD4 SP thymocytes

Project description:While histone H3 lysine 27 trimethylation (H3K27Me3) is associated with gene silencing, whether H3K27Me3 demethylation affects transcription and cell differentiation in vivo has remained elusive. To investigate this, we conditionally inactivated the two H3K27Me3 demethylases, Jmjd3 and Utx, in non-dividing intrathymic CD4+ T cell precursors. We show that both enzymes redundantly promote H3K27Me3 removal at, and expression of, a specific subset of genes involved in terminal thymocyte differentiation, especially S1pr1, encoding a sphingosine-phosphate receptor required for thymocyte egress.

2015-09-02 | GSE70795 | GEO

Histone H3 lysine 4 trimethylation of miRNA genes in HMEC and HMF

2011-04-05 | GSE28377 | GEO

SMYD5 catalyzes histone H3 lysine 36 trimethylation at promoters

Project description:SMYD5 catalyzes histone H3 lysine 36 trimethylation at promoters

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Localization of histone H3 and histone H3 lysine 4 trimethylation at the start of pre-meiotic S phase

Project description:ChIP-on-chip analysis of histone H3 and histone H3 lysine 4 trimethylation in cells induced to undergo synchronous meiosis after growth in nitrogen-rich conditions or after nitrogen depletion. Comparison of H3 and H3k4Me3 in diploid pat1-114 cells grown in -N and +N conditions.

2014-02-20 | E-GEOD-53878 | biostudies-arrayexpress

Localization of histone H3 and histone H3 lysine 4 trimethylation at the start of pre-meiotic S phase

2014-02-20 | GSE53878 | GEO

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