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ATAC-Seq Data of Adipose Stem Cells from Subcutaneouse Adipose Tissue of Normal-Weight Polycystic Ovary Syndrome Women Undergoing Adipogenesis in vitro

ABSTRACT: In previous studies, multiple animal models (rhesus monkeys, sheep) have suggested a developmental programming effect of PCOS. The goal of this study was to examine whether developmental programming may accompany epigenetic changes by examining intrinsic epigenetic differences, specifically chromatin accessibility, in adipose stem cells (ASCs) from subcutaneous (SC) adipose tissue of PCOS women vs age- and BMI-matched control samples as they mature into adipocytes in vitro.

ORGANISM(S): Homo sapiens

PROVIDER: GSE156140 | GEO | 2020/08/13

REPOSITORIES: GEO

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Expression data from subcutaneous adipose tissue of lean polycystic ovary syndrome (PCOS) and normoandrogenic women

Project description:Lean polycystic ovary syndrome (PCOS) women have a greater proportion of android (abdominal) fat, increased numbers of small subcutaneous (SC) abdominal adipocytes and preferential intra-abdominal fat accumulation. This study examines whether abnormal gene expression of SC abdominal adipose stem cells (ASCs) from lean PCOS women underlies this altered abdominal adipose structure-function. In this dataset, we include the expression data obtained from PCOS and NL subcutaneous adipose tissue. Differential expression of at least 1.5-fold change (P<0.05) were obtained in 120 genes (48 upregulated, 72 downregulated) of SC abdominal ASCs from PCOS versus NL women

2017-05-03 | GSE98421 | GEO

Gene Expression Data of Adipose Stem Cells from Normal-Weight Polycystic Ovary Syndrome Women vs. Controls

Project description:In vitro studies of subcutaneous (SC) abdominal adipose stem cells (ASC) from women with polycystic ovary syndrome (PCOS) show altered ASC commitment to preadipocytes and differentiation to mature adipocytes related to hyperandrogenism. The goal of the study is to use microarrays to examine whether SC abdominal ASC gene expression are altered in normal-weight PCOS women and correlated with hyperandrogenemia and/or insulin resistance, which are prevalent clinical pathologies of PCOS.

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RNA-seq Data of Newly-Formed Adipocytes from Adipose Stem Cells of Normal-Weight Polycystic Ovary Syndrome Women vs. Controls

Project description:Normal-weight polycystic ovary syndrome (PCOS) women exhibit adipose tissue dysfunction in vivo accompanied by enhanced subcutaneous (SC) abdominal adipose stem cell (ASC) development to adipocytes with greater lipid accumulation per cell in vitro. The goal of this study was to determine whether this phenomenon is associated with abnormal adipogenic gene transcription using RNA-sequencing to examine differential transcription patterns in PCOS vs controls. We found enhanced activation of adipogenic and adipocyte function genes and decreased expression of genes within the Wnt signaling pathway. In this study we conclude that this altered expression of genes in PCOS cells may underlie their exaggerated lipid accumulation in vitro and could predispose to adipose dysfunction in vivo when caloric intake exceeds energy utilization.

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Transcription profiling of human omental adipose tissue in women with polycystic ovary syndrome (PCOS)

Project description:CONTEXT: The polycystic ovary syndrome (PCOS) is frequently associated with visceral obesity, suggesting that omental adipose tissue might play an important role in the pathogenesis of the syndrome. OBJECTIVE: The objective was to study the expression profiles of omental fat biopsy samples obtained from morbidly obese women with or without PCOS at the time of bariatric surgery. DESIGN: This was a case-control study. SETTINGS: We conducted the study in an academic hospital. PATIENTS: Eight PCOS patients and seven nonhyperandrogenic women submitted to bariatric surgery because of morbid obesity. INTERVENTIONS: Biopsy samples of omental fat were obtained during bariatric surgery. MAIN OUTCOME MEASURE: The main outcome measure was high-density oligonucleotide arrays. RESULTS: After statistical analysis, we identified changes in the expression patterns of 63 genes between PCOS and control samples. Gene classification was assessed through data mining of Gene Ontology annotations and cluster analysis of dysregulated genes between both groups. These methods highlighted abnormal expression of genes encoding certain components of several biological pathways related to insulin signaling and Wnt signaling, oxidative stress, inflammation, immune function, and lipid metabolism, as well as other genes previously related to PCOS or to the metabolic syndrome. CONCLUSION: The differences in the gene expression profiles in visceral adipose tissue of PCOS patients compared with nonhyperandrogenic women involve multiple genes related to several biological pathways, suggesting that the involvement of abdominal obesity in the pathogenesis of PCOS is more ample than previously thought and is not restricted to the induction of insulin resistance.

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Gene Expression Profiling of Subcutaneous Adipose Tissue in Polycystic Ovary Syndrome and Healthy Controls.

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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.

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miRNA expression data from lean PCOS adipose vs BMI matched control women

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2012-09-06 | E-GEOD-37914 | biostudies-arrayexpress

MicroRNA Sequencing of CD34+ Sorted Adipose Stem Cells (ASCs) Undergoing Endotheliogenesis

Project description:MicroRNA Sequencing of CD34+ Sorted Adipose Stem Cells (ASCs) Undergoing Endotheliogenesis

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Project description:Transcriptional comparison of two subpopulations of stem cells isolated from lipoaspirated human adipose tissue, profiling Adipose Stem Cells (ASCs) and Multilineage Differentiating Stress-Enduring Adipose Tissue cells (MUSE-ATs). Experiments focused in the isolation and characterization of a new population of adipose tissue (AT) derived pluripotent stem cells, termed MUSE-ATs, which are isolated using severe cellular stress conditions, including long-term exposure to the proteolytic enzyme collagenase, serum deprivation, low temperatures and hypoxia. Under these conditions, a homogenous, highly purified population of Muse-AT cells is isolated without the utilization of cell sorting methods. The goal of this experiment was to characterize MUSE-ATs, as well as compare them to the endogenous subpopulation of ASCs for reference. Single condition experiment, MUSE-ATs vs. ASCs. Biological replicates: 3 MUSE-ATs replicates, 3 ASCs replicates for reference.

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Whole genomic DNA methylation analysis across human polycystic ovary syndrome ovary granulosa cells [MBD-seq]

Project description:Aberration in miRNA expression or DNA methylation is a causal factor for numerous pathological conditions including polycystic ovarian syndrome PCOS, a common endocrine disorders and leading cause of infertility. The epigenetic interactions between miRNA and DNA methylation remain unexplored in PCOS. Our study identifies epigenetic alternation in ovarian granulosa cells from PCOS patients and helps to reveal the pathogenesis of PCOS.

2019-10-09 | GSE138573 | GEO

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