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Transcriptomic and epigenetic analysis of adipose tissue in Cushing Syndrome [mouse]

ABSTRACT: Transcriptomic and epigenetic analysis of adipose tissue in Cushing Syndrome [mouse]

PROVIDER: PRJNA644580 | ENA |

REPOSITORIES: ENA

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Transcriptomic and epigenetic analysis of adipose tissue in Cushing Syndrome [human]

Project description:Transcriptomic and epigenetic analysis of adipose tissue in Cushing Syndrome [human]

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Transcriptomic and epigenetic analysis of adipose tissue in Cushing Syndrome [mouse]

Project description:Chronic glucocorticoids (GCs) exposure, resulting from endogenous Cushing Syndrome (CS) or prescribed GCs therapy, is associated with a high cardiometabolic burden. Moreover, previous studies have reported persistence of metabolic syndrome features after remission of hypercortisolism and in particular in visceral adipose tissue (VAT). Thus, in this study we want to analyze the transcriptomic alterations in VAT during active and cured CS and correlate these persistent gene expression changes with histone modifications induced by GCs.

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Transcriptomic and epigenetic analysis of adipose tissue in Cushing Syndrome [human]

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Gene methylation profiles in visceral adipose tissue of obese men with and without the metabolic syndrome

Project description:Evaluate differences in gene methylation levels between obese men with and without the metabolic syndrome Visceral adipose tissue from obese men with the metabolic syndrome (MetS+, N=7) vs. obese men without the metabolic syndrome (MetS-, N=7)

2014-02-07 | E-GEOD-54776 | biostudies-arrayexpress

DNA methylation analysis of subcutaneous adipose tissue abdominal versus subcutenaous adipose tissue gluteal

Project description:In humans, adipose tissue is distributed in subcutaneous abdominal and subcutaneous gluteal depots that comprise a variety of functional differences. Whereas energy storage in gluteal adipose tissue has been shown to mediate a protective effect, an increase of abdominal adipose tissue is associated with metabolic disorders. However, the molecular basis of depot-specific characteristics is not completely understood yet. Using array-based analyses of transcription profiles, we identified a specific set of genes that was differentially expressed between subcutaneous abdominal and gluteal adipose tissue. To investigate the role of epigenetic regulation in depot-specific gene expression, we additionally analyzed genome-wide DNA methylation patterns in abdominal and gluteal depots. By combining both data sets, we identified a highly significant set of depot-specifically expressed genes that appear to be epigenetically regulated. Interestingly, the majority of these genes form part of the homeobox gene family. Moreover, genes involved in fatty acid metabolism were also differentially expressed. Therefore we suppose that changes in gene expression profiles might account for depot-specific differences in lipid composition. Indeed, triglycerides and fatty acids of abdominal adipose tissue were more saturated compared to triglycerides and fatty acids in gluteal adipose tissue. Taken together, our results uncover clear differences between abdominal and gluteal adipose tissue on the gene expression and DNA methylation level as well as in fatty acid composition. Therefore, a detailed molecular characterization of adipose tissue depots will be essential to develop new treatment strategies for metabolic syndrome associated complications. DNA methylation profiles of abdominal adipose tissue (6 samples) and gluteal adipose tissue (6 samples) were generated using Infinium methylation 450K BeadChips from Illumina (Illumina, San Diego, USA).

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Proteomic changes in adipose tissue and skeletal muscle in women with PCOS

Project description:Polycystic ovary syndrome (PCOS) is an endocrine and metabolic disorder affecting women of reproductive age. The main features of PCOS are hyperandrogenism and irregular menstrual cycles together with metabolic dysfunctions including abdominal obesity, dyslipidemia and an increased risk of developing type 2 diabetes. Despite the high prevalence of >15%, the pathophysiology of the syndrome is unclear. Gene expression array data from skeletal muscle and adipose tissue have provided some information about dysregulated metabolic pathways in women with PCOS, but the transcriptomic data need to be verified by proteomics to advance our understanding of PCOS. Skeletal muscle and adipose tissue biopsies from 10 women with PCOS and 10 controls were subjected to global proteomic analysis. Protein expression differences between cases and controls were based on Student’s t-test and corrected for multiple testing. In total, we identified 5000 proteins in adipose tissue and 3480 proteins in skeletal muscle. After correction for multiple testing, 74 proteins with q < 0.05 corresponding to 72 unique proteins were found to be differentially expressed in adipose tissue from women with PCOS versus controls. And, 123 proteins with q < 0.05 corresponding to 120 unique proteins were found to be differentially expressed in skeletal muscle from women with PCOS versus control. We then applied pathway analysis to the total protein and phosphopeptide data using PRISM and Enrichr.

2024-01-09 | PXD025358 | Pride

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