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Developmental origins define epigenomic differences between subcutaneous and visceral adipocytes

ABSTRACT: Developmental origins define epigenomic differences between subcutaneous and visceral adipocytes

PROVIDER: PRJNA434651 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6750010_1.fastq.gz	Fastqsanger.gz
	SRR6750010_2.fastq.gz	Fastqsanger.gz
	SRR6757170_1.fastq.gz	Fastqsanger.gz
	SRR6757170_2.fastq.gz	Fastqsanger.gz
	SRR6757180_1.fastq.gz	Fastqsanger.gz

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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.

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