MiRNA expression profile of human subcutaneous adipose
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE18470 | GEO | 2010/05/13
SECONDARY ACCESSION(S): PRJNA118199
REPOSITORIES: GEO
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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
2010-05-13 | GSE18469 | GEO
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.
2010-05-13 | E-GEOD-18469 | biostudies-arrayexpress
Project description:MicroRNAs are a class of molecular regulators found to participate in numerous biological processes, including adipogenesis. However, whether dietary changes impact on microRNA (miRNA) in ruminants has not been reported. Therefore, this study aimed to evaluate the dietary effect on miRNA expression in subcutaneous (backfat) and visceral fat depots (perirenal fat) from beef steers fed with different diets containing high or low fat levels. Fat tissues were collected from 16 Hereford x Aberdeen Angus cross bred steers (15.5 month old) fed high fat diet (5.85% fat, n=8) or control diet (1.95% fat, n=8). Total RNA from each animal was subjected to miRNA microarray analysis using a customized Agilent miRNA microarray containing 672 bovine miRNA probes. Expression of miRNAs was not equally detected under two diets; 169 miRNAs were commonly expressed while 75 were diet specific. The number of miRNAs detected per animal under high fat diet was higher than those fed control diet (p= 0.037 in subcutaneous fat and p= 0.002 in visceral fat).. Further qRT-PCR analysis confirmed that the expression of some miRNAs was highly influenced by diet (miR-19a, -92a, -92b, -101, -103, -106, -142-5p, and 296) or fat depot (miR-196a and -2454). Our results revealed that the miRNA expression can be influenced by types of fat tissues or diet, suggesting that miRNAs may regulate bovine adipogenesis when diet alters. In this study, a total of 32 adipose tissue samples were analyzed by microRNA microarrays, being 16 subcutaneus (backfat) and 16 visceral (perirenal fat) fat depots were collected from 16 animals (Control diet = 8) (High fat diet = 8).
2012-06-30 | E-GEOD-35012 | biostudies-arrayexpress
Project description:MicroRNAs are a class of molecular regulators found to participate in numerous biological processes, including adipogenesis. However, whether dietary changes impact on microRNA (miRNA) in ruminants has not been reported. Therefore, this study aimed to evaluate the dietary effect on miRNA expression in subcutaneous (backfat) and visceral fat depots (perirenal fat) from beef steers fed with different diets containing high or low fat levels. Fat tissues were collected from 16 Hereford x Aberdeen Angus cross bred steers (15.5 month old) fed high fat diet (5.85% fat, n=8) or control diet (1.95% fat, n=8). Total RNA from each animal was subjected to miRNA microarray analysis using a customized Agilent miRNA microarray containing 672 bovine miRNA probes. Expression of miRNAs was not equally detected under two diets; 169 miRNAs were commonly expressed while 75 were diet specific. The number of miRNAs detected per animal under high fat diet was higher than those fed control diet (p= 0.037 in subcutaneous fat and p= 0.002 in visceral fat).. Further qRT-PCR analysis confirmed that the expression of some miRNAs was highly influenced by diet (miR-19a, -92a, -92b, -101, -103, -106, -142-5p, and 296) or fat depot (miR-196a and -2454). Our results revealed that the miRNA expression can be influenced by types of fat tissues or diet, suggesting that miRNAs may regulate bovine adipogenesis when diet alters.
2012-07-01 | GSE35012 | GEO
Project description:Obesity is an energy balance disorder in which nutrient intake chronically exceeds energy expenditure, resulting in the accumulation of white adipose tissue. Increased adiposity is due to increases in the number and size of adipocytes, which leads to increased body fat and metabolic consequences. Adipocytes induce insulin resistance by promoting lipotoxicity and modulating adipokine secretion. Therefore, a thorough understanding of the mechanisms that regulate adipogenesis could have clinical relevance in preventing and treating obesity and the metabolic syndrome. In this study, we performed miRNA array to measure miRNA profiles of undifferentiated and differentiated 3T3-L1 adipocytes using Agilent(r) miRNA array. We show that miRNA profile changes during adipogenesis. Thus, this data would be useful to find the distinct role of miRNAs for the regulation of adipogenesis.
2013-08-07 | E-MTAB-1783 | 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. A global transcriptomic survey of subcutaneous adipose tissue from human subjects characterised as having normal glucose tolerance, glucose intolerance or frank type 2 diabetes.
2011-05-31 | E-GEOD-27949 | 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: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.
2011-05-31 | GSE27949 | GEO
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.
2011-05-31 | GSE27912 | GEO
Project description:Adipose tissue (AT) distribution is an important determinant of cardiometabolic health. Increased visceral adiposity has been associated with a higher risk of obesity-related diseases. An important step in deciphering the molecular complexity of subcutaneous AT (SAT) and visceral AT (VAT) is to elucidate the molecular composition of the principal AT cell type, adipocytes. We present a comprehensive protein expression profile of abdominal subcutaneous (SA) and omental visceral adipocytes (VA). We isolated adipocytes from paired AT biopsies obtained during bariatric surgery of 19 morbidly obese women (BMI > 30 kg/m2) and performed state-of-the-art mass spectrometry to investigate their proteome profiles. We identified 3,686 proteins groups and found 1,140 differentially expressed proteins (adj. p-value < 0.05), of which 576 proteins were upregulated in SA and 564 in VA samples. In addition to providing a global protein profile of abdominal SA and omental VA, we also present the most differentially expressed pathways and processes distinguishing SA from VA. We show that SA are significantly more active in processes linked to vesicular transport and secretion, and also to increased lipid metabolism activity. Conversely, the expression of proteins involved in the mitochondrial energy metabolism and translational or biosynthetic activity is higher in VA. We also performed prediction analyses of differentially expressed putative secreted proteins, which revealed a significantly higher number of potentially secreted proteins in SA compared to VA. Our analysis represents a valuable resource of protein expression profiles in abdominal SA and omental VA, highlighting key differences in their role in obesity. Additionally, we predict possible protein targets among secreted proteins, which may be utilized for the further investigation of the role of different AT depots in obesity using peripheral blood.
2021-11-04 | PXD024734 | Pride