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Genomic Glucocorticoid Action in Embryonic Mouse Neural Stem Cells

ABSTRACT: Genomic Glucocorticoid Action in Embryonic Mouse Neural Stem Cells

PROVIDER: PRJNA921861 | ENA |

REPOSITORIES: ENA

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Genomic Glucocorticoid Action in Embryonic Mouse Neural Stem Cells

Project description:The goal of this study was to measure genome-wide expression in primary mouse neural stem/progenitor cell (NSPC) cultures to determine if SOX2 ablation alters the transcriptomic response which occurs following glucocorticoid receptor activation by the synthetic glucocorticoid, Dexamethasone. Neurosphere cultures of SOX2 knock out (KO) NSPCs and control non-deleted wild-type (WT) NSPCs (C57BL/6) derived from the fetal telencephalon were established at postnatal day zero (P0).

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HNF4A is required to specify glucocorticoid action in the liver - RNAseq

Project description:The glucocorticoid receptor (GR) is a nuclear hormone receptor critical to the regulation of energy metabolism and the inflammatory response. The actions of GR have been shown to be highly dependent on context. Here, we demonstrate the necessity for liver lineage-determining factor hepatocyte nuclear factor 4A (HNF4A) in defining tissue-specificity of GR action. In normal liver, the HNF4 motif lies adjacent to the glucocorticoid response element (GRE) at GR binding sites found within regions of open chromatin. In the absence of HNF4A, the liver GR cistrome is remodelled, with both loss and gain of GR recruitment evident. Lost sites are characterised by HNF4 motifs and weak GRE motifs. Gained sites are characterised by strong GRE motifs, and typically show GR recruitment in non-liver tissues. These RNA-seq data demonstrate the functional importance of these HNF4A-regulated GR sites by showing evidence of an altered transcriptional response to glucocorticoid treatment in the Hnf4a-null liver. In Hnf6-null liver, a far more minor effect on the glucocorticoid response is observed.

2021-04-09 | E-MTAB-10247 | biostudies-arrayexpress

HNF4A is required to specify glucocorticoid action in the liver - ChIPseq

Project description:The glucocorticoid receptor (GR) is a nuclear hormone receptor critical to the regulation of energy metabolism and the inflammatory response. The actions of GR have been shown to be highly dependent on context. Here, we performed GR ChIP-seq in mouse liver to demonstrate the necessity for liver lineage-determining factor hepatocyte nuclear factor 4A (HNF4A) in defining tissue-specificity of GR action. In normal liver, the HNF4 motif lies adjacent to the glucocorticoid response element (GRE) at GR binding sites found within regions of open chromatin. In the absence of HNF4A, the liver GR cistrome is remodelled, with both loss and gain of GR recruitment evident. Lost sites are characterised by HNF4 motifs and weak GRE motifs. Gained sites are characterised by strong GRE motifs, and typically show GR recruitment in non-liver tissues. The functional importance of these HNF4A-regulated GR sites is further demonstrated by evidence of an altered transcriptional response to glucocorticoid treatment in the Hnf4a-null liver.

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