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Adipocyte-derived Exosomal miRNAs from Subcutaneous Adipose Tissue: A Novel Mechanism for Obesity-Related Disease

ABSTRACT: Affymetrix miRNA 3.0 array profiling of adipocyte-derived exosomes from obese and lean human subjects. We used miRNA arrays to profile exosomes shed from obese and lean human subcutaneous fat that was cultured for 60 minutes.

ORGANISM(S): synthetic construct Homo sapiens

PROVIDER: GSE68885 | GEO | 2017/05/15

SECONDARY ACCESSION(S): PRJNA283971

REPOSITORIES: GEO

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Adipocyte-derived Exosomal miRNAs from Subcutaneous Adipose Tissue: A Novel Mechanism for Obesity-Related Disease

Project description:Affymetrix miRNA 3.0 array profiling of adipocyte-derived exosomes from obese and lean human subjects. We used miRNA arrays to profile exosomes shed from obese and lean human subcutaneous fat that was cultured for 60 minutes. Human obese and lean subcutaneous fat were surgically acquired, dissected, and promptly cultured for 60 minutes. We used the culture supernatants for exosome purification and isolation using ExoQuick-TC Precipitation Solution.

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Adipocyte-derived Exosomal miRNAs: A Novel Mechanism for Obesity-Related Disease

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Differentially expressed cellular and exosomal miRNAs during inflammation or high fat diet-induced obesity in mouse

Project description:The aim of the current study was to characterize the differential cellular and exosomal miRNAs during inflammation or high fat diet-induced obesity in mice. Mesenteric adipose tissue (MAT) and abdominal aorta (AA) from mice fed a normal chow diet (NCD) or a high fat diet (HFD) were harvested for miRNA profiling. MAT-derived adipocytes (MAT-Ad) challenged with either lipopolysaccharide (LPS, 1 µg/ml) or PBS were harvested for miRNA profiling. Meanwhile, miRNAs encapsulated in MAT-Ad-derived exosomes (MAT-Ad-EX) were also analyzed. Hierarchical clustering analysis performed on most significantly regulated miRNAs (HFD vs NCD in tissues; LPS challenge vs PBS in the cells) showed a set of miRNAs that are differentially expressed in obese versus lean MAT or AA tissues, and in LPS-challenged versus PBS-treated MAT-Ads. The dysregulated of miRNAs in MAT-Ad-EX was also generated and hierarchically clustered, induced by prolonged exposure to microbial product.

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