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Androgens Regulate Ovarian Gene Expression through Modulation of H3K27me3 in Granulosa Cells

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

ORGANISM(S): Mus musculus

PROVIDER: GSE152792 | GEO | 2020/06/19

REPOSITORIES: GEO

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Androgens Regulate Ovarian Gene Expression through Modulation of H3K27me3 in Granulosa Cells [ChIP-seq]

Project description:This study reports androgen-induced gene expression in granulosa cells of the ovary and provides a molecular insight of how androgens regulate granulosa cell gene expression through modulating the epigenetic mark H3K27me3.

2020-06-19 | GSE152791 | GEO

Androgens Regulate Ovarian Gene Expression through Modulation of H3K27me3 in Granulosa Cells [RNA-Seq]

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Androgens Regulate Ovarian Gene Expression through Modulation of H3K27me3 in Granulosa Cells

Project description:Androgens Regulate Ovarian Gene Expression through Modulation of H3K27me3 in Granulosa Cells

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Androgens regulate ovarian gene expression by balancing Ezh2-Jmjd3 mediated H3K27me3 dynamics.

Project description:Conventionally viewed as male hormone, androgens play a critical role in female fertility. Although androgen receptors (AR) are transcription factors, to date very few direct transcriptional targets of ARs have been identified in the ovary. Using mouse models, this study provides three critical insights about androgen-induced gene regulation in the ovary and its impact on female fertility. First, RNA-sequencing reveals a number of genes and biological processes that were previously not known to be directly regulated by androgens in the ovary. Second, androgens can also influence gene expression by decreasing the tri-methyl mark on lysine 27 of histone3 (H3K27me3), a gene silencing epigenetic mark. ChIP-seq analyses highlight that androgen-induced modulation of H3K27me3 mark within gene bodies, promoters or distal enhancers have a much broader impact on ovarian function than the direct genomic effects of androgens. Third, androgen-induced decrease of H3K27me3 is mediated through (a) inhibiting the expression and activity of Enhancer of Zeste Homologue 2 (EZH2), a histone methyltransferase that promotes tri-methylation of K27 and (b) by inducing the expression of a histone demethylase called Jumonji domain containing protein-3 (JMJD3/KDM6B), responsible for removing the H3K27me3 mark. Androgens through the PI3K/Akt pathway, in a transcription-independent fashion, increase hypoxia-inducible factor 1 alpha (HIF1α) protein levels, which in turn induce JMJD3 expression. Furthermore, proof of concept studies involving in vivo knockdown of Ar in the ovary and ovarian (granulosa) cell-specific Ar knockout mouse model show that ARs regulate the expression of key ovarian genes through modulation of H3K27me3.

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Androgens Regulate Ovarian Gene Expression through Modulation of H3K27me3 in Granulosa Cells [ChIP-seq]

Project description:Androgens Regulate Ovarian Gene Expression through Modulation of H3K27me3 in Granulosa Cells [ChIP-seq]

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Androgens Regulate Ovarian Gene Expression through Modulation of H3K27me3 in Granulosa Cells [RNA-Seq]

Project description:Androgens Regulate Ovarian Gene Expression through Modulation of H3K27me3 in Granulosa Cells [RNA-Seq]

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