Adipose derived stem cells (ASCs) methylation differences between lean and obese individuals
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ABSTRACT:
PROVIDER: PRJNA437619 | ENA |
REPOSITORIES: ENA
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Project description:Pathological expansion of adipose tissue (AT) in obesity is supported by adipocyte precursors, termed adipose-derived stromal/stem cells (ASCs). Elucidation of mechanisms underlying ASC function may lead to therapeutic interventions to treat fat mass accumulation. Using epigenome-wide association studies, we explored the impact of obesity on the methylation signature of human ASCs.
2019-12-05 | GSE111632 | GEO
Project description:Objective: The etiology of PCOS is mostly unknown. Existing data support both genetic and environmental factors in its pathogenesis. Design: Prospective case - control study. Setting: University Hospital. Patients: 25 patients undergoing IVF-ICSI treatment. Intervention: Genome-wide oligonucleotide microarray technology was used to study differential gene-expression patterns of cultured human cumulus cells from IVF patients divided into 4 groups according to disease state (PCOS vs. Control) and BMI (Obese vs. Lean). Results: Two differential PCOS gene expression profiles were established: Lean-Type was formed by comparing PCOS lean (PL) vs. non-PCOS lean (NL) individuals; Obese-Type was formed by comparing PCOS obese (PO) vs. non-PCOS (NO) obese patients. Conclusions: Different molecular pathways are associated with PCOS in Lean and Obese individuals, as demonstrated by gene expression profiling of cumulus cells. Our findings provide insights into the molecular pathogenesis of PCOS. We used microarrays to study the gene expression of human cultured cumulus cells. We compared the genes expression of lean PCOS, Obese PCOS, lean controls and obese controls. Different molecular pathways are associated with PCOS in Lean and Obese patients. Experiment Overall Design: Cumulus cells obtained from woman undergoing IVF/ICSI. Following oocyte retrieval, cumulus cells were stripped from the oocyte, in preparation for the ICSI process, with a micropipette. After 48h in culture the cumulus cells were collected for RNA extraction and hybridization on Affymetrix microarrays. We compered the expression profile of 4 groups - lean PCOS, obese PCOS, lean controls and obese controls.
2008-06-11 | E-GEOD-10946 | biostudies-arrayexpress
Project description:The overall goal of this studyis to compare the transcription differences of epicardial adipose tissue between between lean and obese and Type 2 diabetic individuals
2021-07-30 | GSE179455 | GEO
Project description:Obtaining adipose tissue samples are paramount to the understanding of human obesity. We have examined the impact of needle-aspirated and surgical biopsy techniques on the study of subcutaneous adipose tissue (scAT) gene expression in both obese and lean subjects. Biopsy sampling methods have a significant impact on data interpretation and revealed that gene expression profiles derived from surgical tissue biopsies better capture the significant changes in molecular pathways associated with obesity. We hypothesize that this is because needle biopsies do not aspirate the fibrotic fraction of scAT; which subsequently results in an under-representation of the inflammatory and metabolic changes that coincide with obesity. This analysis revealed that the biopsy technique influences the gene expression underlying the biological themes commonly discussed in obesity (e.g. inflammation, extracellular matrix, metabolism, etc), and is therefore a caveat to consider when designing microarray experiments. These results have crucial implications for the clinical and physiopathological understanding of human obesity and therapeutic approaches. Keywords: subject and tissue biopsy technique comparison Tissue samples from lean and obese subjects were analyzed: total of 36 hybridizations. The goal was to compare the effect of biopsy sampling methods on global subcutaneous adipose tissue gene expression analyses. The following subject groups were used for the analysis: 9 lean subjects: needle biopsy 9 lean subjects: surgical biopsy 9 obese subjects: needle biopsy 9 obese subjects: surgical biopsy
2008-12-22 | E-GEOD-12050 | biostudies-arrayexpress
Project description:Adipose, once considered an inert storage depot, is now known to be an active endocrine tissue involved in total body homeostasis and metabolism, which exerts effects on multiple systems including food intake, immune function, and blood glucose regulation. Adipose tissue depots are known to have unique metabolic and gene expression profiles in vivo and when cultured in vitro. Differences in adipose tissue depot function could be important in determining chronic disease risk. Few comparisons of depot gene expression have been performed in the dog. Utilizing microarray technology, our objective was to identify differentially expressed genes and enriched functional pathways between subcutaneous and gonadal adipose of lean and obese dogs. Subcutaneous and gonadal adipose tissue samples were collected from 9 intact female beagles (4 yr-old; 4 lean controls; 5 obese ad libitum-fed) after 24 wk of ad libitum feeding.
2012-01-15 | E-GEOD-29280 | biostudies-arrayexpress
Project description:We did single cell RNA sequencing on three lean and three obese donors. For each donor, we sorted CD45 positive and CD45 negative cells and prepared 10X scRNA-seq libaries. We observed cell type compositon changes and expression changes in the lean and obese donors.
2021-03-09 | GSE155960 | GEO
Project description:Adipose tissue stromal cells contribute to the regulation of adipose tissue in lean and obese states. Myeloid cells such as adipose tissue macrophages (ATMs) and dendritic cells (ATDCs) undergo both quantitative and qualitative changes with obesity. Due to similarity in markers the identify of adipose tissue dendritic cells and macrophages has been elusive. We have refined prior protocols to unambiguously discern ATM and ATDC in mice. We used microarrays to compare the profiles of ATMs and ATDC from gonadal adipose tissue from lean, obese, and formerly obese mice. We also isolated preadipocytes (PA) from lean and obese mice for comparison. Male C57Bl/6 mice were fed normal diet (ND) or high fat diet (HFD) for 16 weeks. Weight loss (WL) mice were switched from the HFD to ND for 8 weeks. RNA was purified from FACS sorted cell populations (live cells only) obtained from gonadal/epididymal adipose tissue depots. ATMs were defined as CD11c+ (CD45+CD64+ CD11c+) or CD11c- (CD45+CD64+ CD11c-) ATMs. ATDC were defined as CD64- CD11c+. PA were defined as CD31- CD45- Sca1+ PDGFRA+.
2016-09-01 | GSE85846 | GEO
Project description:The study aimed to investigate molecular signatures in peripheral blood of individuals affected by metabolic syndrome (MetS) and different degrees of obesity. Metabolic health of 1204 individuals was assessed, and 32 subjects were recruited to four study groups: MetS lean, MetS obese, “healthy obese” and healthy lean. Whole-blood transcriptome next generation sequencing with functional data analysis was carried out.
2020-02-18 | GSE145412 | GEO
Project description:Objective: The etiology of PCOS is mostly unknown. Existing data support both genetic and environmental factors in its pathogenesis. Design: Prospective case - control study. Setting: University Hospital. Patients: 25 patients undergoing IVF-ICSI treatment. Intervention: Genome-wide oligonucleotide microarray technology was used to study differential gene-expression patterns of cultured human cumulus cells from IVF patients divided into 4 groups according to disease state (PCOS vs. Control) and BMI (Obese vs. Lean). Results: Two differential PCOS gene expression profiles were established: Lean-Type was formed by comparing PCOS lean (PL) vs. non-PCOS lean (NL) individuals; Obese-Type was formed by comparing PCOS obese (PO) vs. non-PCOS (NO) obese patients. Conclusions: Different molecular pathways are associated with PCOS in Lean and Obese individuals, as demonstrated by gene expression profiling of cumulus cells. Our findings provide insights into the molecular pathogenesis of PCOS. We used microarrays to study the gene expression of human cultured cumulus cells. We compared the genes expression of lean PCOS, Obese PCOS, lean controls and obese controls. Different molecular pathways are associated with PCOS in Lean and Obese patients. Keywords: disease state analysis
2008-03-27 | GSE10946 | GEO
Project description:Raw files corresponding to the epilipidomic dataset for identification and relative quantification of oxidized complex lipids in the blood plasma of lean and obese individuals.
2021-12-23 | MSV000088608 | MassIVE