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The Signature of Glucocorticoid Receptor -Dependent Hypertrophic Transcriptome in Cardiomyocytes [RNA-Seq]

ABSTRACT: We examined Glucocorticoid receptor binding sites in isolated neonatal cardiomyocytes treated with Dexamethasone (100nM) for 1hr or Ethanol using GR-ChIP-Seq. In addition to determine the change in the resulting transcriptional status of genes we performed RNAseq in cardiomyocytes treated with Dexamethasone (100nM) or Ethanol for 1hr or 24hrs.

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE114766 | GEO | 2019/08/20

REPOSITORIES: GEO

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The Signature of Glucocorticoid Receptor -Dependent Hypertrophic Transcriptome in Cardiomyocytes [ChIP-Seq]

Project description:We examined Glucocorticoid receptor binding sites in isolated neonatal cardiomyocytes treated with Dexamethasone (100nM) for 1hr or Ethanol using GR-ChIP-Seq.

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Gene Regulation by the Human Glucocorticoid Receptor Dimerization Domain Mutant dim4

Project description:A mutation in the dimerization domain of the mouse glucocorticoid receptor (GR), dim1, has recently been shown to bind DNA and regulate gene expression. To expand these studies we created a stable osteosarcoma (U-2 OS) cell line expressing four mutations in the dimerization domain of the human GR, dim4 (N454D, A458T, R460D, D462C), and used whole human genome microarray analysis to compare differences in gene regulation between vehicle treated (CON) and those treated with the glucocorticoid receptor agonist dexamethasone (DEX) at 100nM concentration for 6 hours. Gene expression in U-2 OS hGRdim4 cells was measured after a 6 hour treatment with 100nM dexamethasone or vehicle (control) and the dexamethsone (dex) treated cells were compared to vehicle treated cells. The experiment was performed in triplicate.

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Project description:We performed ATAC-seq in the A549 cell line. Cells were treated with either 100 nM dexamethasone or 0.1% ethanol. After 4 hours, cells were washed 2x with PBS and cultured in hormone-free medium for 24 hours, after which cells were treated again for 4 hours with either 100 nM dexamethasone or 0.1% ethanol.

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Gene Regulation by the Human Glucocorticoid Receptor Dimerization Domain Mutant dim4

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The Signature of Glucocorticoid Receptor -Dependent Hypertrophic Transcriptome in Cardiomyocytes

Project description:The Signature of Glucocorticoid Receptor -Dependent Hypertrophic Transcriptome in Cardiomyocytes

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Circularized chromosome conformation capture (4C-seq) in A549 cells after glucocorticoid re-induction

Project description:We performed 4C-seq in the A549 cell line to investigate changes in chromatin interactions at the ZBTB16 locus. Cells were treated with either 100 nM dexamethasone or 0.1% ethanol. After 4 hours, cells were washed 2x with PBS and cultured in hormone-free medium for 24 hours, after which cells were treated again for 4 hours with either 100 nM dexamethasone or 0.1% ethanol. Experiments were performed in two biological replicates. For each treatment, 4C-seq data were generated for the following two viewpoints: ZBTB16 promoter-proximal viewpoint coordinates: chr11:113929670-113930464 (hg19) ZBTB16 intronic viewpoint coordinates: chr11:114051224-114051804 (hg19)

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Neonatal rat ventricular cardiomyocytes Cells: Control vs. hypertrophic cardiomyocytes induced by isoproterenol

Project description:the expression characteristics of lncRNAs among hypertrophic cardiomyocytes induced by isoproterenol in rat ventricular myocytes from newborn Sprague-Dawley rats.

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Exosomes derived from hypertrophic cardiomyocytes induce inflammation in macrophages via miR-155 mediated MAPK pathway.

Project description:We report the application of RNA sequencing technology for high-throughput profiling of normal cardiomyocytes-derived and hypertrophic cardiomyocytes- derived exosomes. The miRNA expression profiles were determined by high throughput miRNA sequencing, and 635 differentially expressed miRNAs were found. However, compared with the control group, 7 miRNAs were significantly differentially expressed in exosomes released from Ang II-treated cardiomyocytes. A total of 4 miRNAs were upregulated while 3 were downregulated. We used qRT-PCR to characterize relative expression levels of miR-155 and miR-212-3p to validate the data obtained through miRNA sequencing. The results obtained through qRT-PCR and miRNA sequencing were essentially identical. To elucidate the potential role of miRNAs in hypertrophic cardiomyocytes, the prediction of miRNA targets was performed and 11,637 genes were obtained. To reduce the false positives rate of target gene prediction, only the predicted targets within the 3 databases described above were further analyzed. Finally, 5,477 predicted target genes were selected for further investigation. Our results support the concept that exosomal microRNAs have emerged as important inflammatory response modulators regulating the cardiac hypertrophy.

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