Expression data from human subcutaneous adipocytes
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
SUBMITTER: Takahiro Yamaguchi
PROVIDER: E-GEOD-55539 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
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Project description:An Affimetrix GeneChip Human Genome U133 Plus 2.0 Array was used to study the effect of oleoylethnolamide on gene expression. The addition of 0.01 mM oleoylethanolamide (OEA) to human subcutaneous adipocytes significantly affected the expression of 1013 genes, with 556 being up-regulated and 457 being down-regulated.
2014-11-04 | GSE55539 | GEO
Project description:Bisphenol A (BPA) is a xenobiotic endocrine disrupting chemical. In vitro and in vivo studies indicated that BPA alters endocrine-metabolic pathways in adipose tissue increasing the risk of developing metabolic disorders. BPA effects on human adipocytes, specifically in children, are poorly investigated. To investigate in childhood the effect of exposure to BPA on metabolic disorders we analyzed in vitro the effects of environmentally relevant doses of BPA on gene expression of mature human adipocytes from pre-pubertal lean patients and on related physiological outcomes. Adipocytes from children were treated in vitro with BPA and gene expression was evaluated by qRT-PCR. Genome wide analyses were performed using GeneChip Human Gene 1.0 ST array. Lipid content in adipocytes was estimated by ORO staining and Triglyceride Quantification Kit. Secreted IL-1beta, in adipocytes culture medium, and insulin, in PANC-1 culture medium, were performed using ELISA assays. BPA was found to promote up-regulation of ER? and ERR?, and down-regulation of GPR30 expression modulating estrogen signaling and following a non-linear dose-response. Microarray data analysis demonstrated that BPA increases the gene expression of pro-inflammatory cytokines and lipid metabolism-related FABP4 and CD36 in adipocytes. PCSK1 resulted the most interesting gene being down-regulated by BPA thus impairing insulin production in pancreas. BPA promotes inflammation and lipid metabolism dysregulation in adipocytes from lean children. Moreover, PCSK1 can be a key gene in BPA action modulating insulin production. Exposure to BPA in childhood may be an important risk factor in developing obesity and metabolic disorders. Three prototypic situations were analyzed (5 replication each): untreated cells (C), 10 nM BPA treated cells (BPA), 1 nM 17-beta Estradiol treated cells (ES).
2015-07-09 | E-GEOD-58516 | biostudies-arrayexpress
Project description:The chronic inflammatory state that accompanies obesity is a major contributor to insulin resistance and other metabolic dysfunction features. Despite recent advances in our understanding of the cellular and secreted factors that promote the inflammatory milieu of obesity, we have much less insight into the transcriptional pathways that drive these processes. While most attention has focused on the canonical inflammatory transcription factor NF-KB, other potentially important factors exist, including members of the interferon regultory factor (IRF) family. Here we show that IRF3 expression is upregulated in the adipocytes of obese mice and humans. TLR3/TLR4 activation induces insulin resistance in adipocytes, which can be prevented by IRF3 knockdown. Furthermore, Irf3KO mice display improved insulin sensitivity, associated with reduced intra-adipose and systemic inflammation in the high-fat fed state, enhanced browning of subcutaneous fat, and increased adipose expression of Glut4. Taken together, our data indicates that IRF3 is a major transcriptional regulator of adipose inflammation to maintain systemic glucose and energy homeostasis. Transcriptional profiling of murine 3T3-L1 adipocytes with altered expression of IRF3. Overexpression or knockdown of IRF3 was achieved by lentivirus transduction for 6 days. 3T3-L1 adipocytes with IRF3 knockdown were further treated in the absence or presence of LPS for 6 days. Samples consist of triplicate replica with appropriate control.
2016-05-31 | E-GEOD-81193 | biostudies-arrayexpress
Project description:Adipose tissue is a primary regulator of energy balance and metabolism. The distribution of adipose tissue depots is of clinical interest because the accumulation of upper-body subcutaneous (ASAT) and visceral adipose tissue (VAT) is associated with cardiometabolic diseases, whereas lower-body gluteal-femoral adipose tissue (GFAT) appears to be protective. There is heterogeneity in the morphological and metabolic traits of adipocytes obtained from different regions of the body, but detailed knowledge of the constituent proteins in each depot is lacking. Here, we determined the human adipocyte proteome from ASAT, VAT and GFAT using high-resolution SWATH mass spectrometry proteomics.
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Project description:Adipocytes isolated from lean and obese postmenopausal women with no significant differences in metabolic syndrome parameters demonstrate changes in multiple inflammatory, metabolic and structural gene families. Purified adipocyte samples were isolated from subcutaneous adipose tissue surgical biopsies of 7 obese (BMI>30) and 7 lean (BMI<25) postmenoposal women and gene expression was quantified with Agilent-014850, 4X44K human whole genome platform arrays (GPL6480)
2013-02-02 | E-GEOD-44000 | biostudies-arrayexpress
Project description:Dedifferentiated fat (DFAT) cells, established in vitro from mature adipocytes, exhibit properties of multipotent mesenchymal stem/stromal cells (MSCs), such as the ability to differentiate into multiple mesenchymal lineages. Although DFAT cells exhibit certain properties of proliferative progeny, at present there is only limited knowledge about their characteristics as MSCs because those cells are considered to be potential artifacts of cell culture. To elucidate the identity of DFAT cells, we compared gene expression profiles of human DFAT cells and adipose-derived stem/stromal cells (ADSCs) established using adipose tissue from the same donors. Microarray analysis showed that the global RNA expression profiles of human DFAT cells were very similar to those of ADSCs, a representative MSC, despite being committed adipocyte progenitors. Subcutaneous adipose tissues that were obtained during surgical operation for non-malignant disease were donated by 3 patients after obtaining informed consent. Three sets of DFAT cells and ADSCs, each derived from adipose tissue from the same donor were used for RNA extraction and subsequent microarray analysis.
2013-06-12 | E-GEOD-47869 | biostudies-arrayexpress
Project description:The aim of the project was to compare global gene expression in adipocytes from obese patients and lean controls. Subcutaneous adipose tissue was collected from severely obese patients undergoing bariatric surgery (average body-mass index (BMI) of 45.5 kg/m2 (n = 12, thereof 4 men) and healthy lean patients undergoing hernia repairs (average BMI of 24.2 kg/m2 (n = 12, thereof 7 men), between 27 and 56 years of age. Adipocytes were isolated by collagenase treatment of adipose tissue, followed by filtering and centrifugation. Floating adipocytes were lysed in Qiazol before RNA purification and microarray analysis.
2018-12-12 | E-MTAB-6728 | biostudies-arrayexpress
Project description:Adipose tissue abundance relies partly on the factors that regulate adipogenesis, i.e. proliferation and differentiation of adipocytes. While the transcriptional program that initiates adipogenesis is well-known, the importance of microRNAs in adipogenesis is less well studied. We thus set out to investigate whether miRNAs would be actively modulated during adipogenesis and obesity. Several models exist to study adipogenesis in vitro, of which the cell line 3T3-L1 is probably the most well known, albeit not the most physiologically appropriate. We used a microarray strategy to provide a global profile of miRNAs in brown and white primary murine adipocytes (prior to and following differentiation) and evaluated the similarity of the responses to non-primary cell models, through literature data-mining. We found 65 miRNAs regulated during in vitro adipogenesis in primary adipocytes. When we compared our primary adipocyte profiles with those of cell lines reported in the literature, we found a high degree of difference in adipogenesis-regulated miRNAs. We evaluated the expression of 10 of our adipogenesis-regulated miRNAs using real-time qPCR and then selected 5 miRNAs that showed robust expression levels and profiled these by qPCR in subcutaneous adipose tissue of 20 humans with a range of body mass indices (BMI, range=21-48). Of the miRNAs tested, mir-21 was both highly expressed in human adipose tissue and positively correlated with BMI (R2=0.49, p<0.001). In conclusion, we provide the preliminary analysis of miRNAs important for primary cell in vitro adipogenesis and find that the inflammation-associated miRNA, mir-21, is up-regulated in subcutaneous adipose tissue in human obesity. 3 samples of pre adipocytes isolated from brown adipose tissue examined pre and post differentiation to brown adipocytes. 3 samples of pre-adipocytes isolated from white adipose tissue and examined pre and post differentiation to adipocytes.
2011-05-31 | E-GEOD-27912 | biostudies-arrayexpress
Project description:Objective: Potential regulators of adipogenesis include microRNAs (miRNAs), small non-coding RNAs that have been recently shown related to adiposity and differentially expressed in fat depots. However, to date no study is available regarding the relationship of miRNAs expression profile, biological pathway and cellular phenotype during human adipogenesis. Thereby, the aim of this study was to investigate whether miRNA expression profile in human adipocytes is related to adipogenesis and to test whether miRNA profile in human subcutaneous adipose tissue is associated to human obesity and co-morbidities. Keywords: miRNA expression Three biological replicates of fat cells from both lean (BMI<25.0Kg/m2) and obese (BMI>30.0Kg/m2) subjects during differentiation (days 0, 7 and 14) were performed.
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Project description:We performed microarray analysis to evaluate differences in the transcriptome of the adipose tissue before and during pregnancy Biopsies of adipose tissue of the subcutaneous gluteal depots, processed for adipose cell isolation, the remining tissue was snap frozen in liquid nitrogen, adipocytes were isolated by digestion with collagenase
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