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Transcriptome profiling of subcutaneous and visceral adipose tissue from obese individuals

ABSTRACT: Distinct characteristics of adipose tissue at different localization of human body has shown greater significance in development of metabolic disorders. Visceral adipose tissue in particular is known to be associated with obesity related metabolic complications that include type II diabetes. In this experiment, we attempt to profile transcriptome signatures of adipocyte, stromal vascular fraction (SVF) and adipose tissue from subcutaneous and visceral adipose tissue from obese individuals.

ORGANISM(S): Homo sapiens

PROVIDER: GSE135776 | GEO | 2019/11/04

REPOSITORIES: GEO

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Project description:As a serious public health problem nowadays, obesity and its complications are receiving gradually more attention, especially on how food-induced obesity causes the expansion of adipose tissue and leads to the occurrence of metabolic inflammation and infiltration of immune cells. It's still worth mentioning that numerous genes in adipose tissue which differ between obese and normal individuals in food-induced obesity were not insufficiently studied. Applying machine learning methods and natural language processing methods on transcriptome datasets and PubMed abstracts, we investigated 8 genes with differential expression and high association with macrophages in the visceral and subcutaneous adipose tissue between obese and normal individuals, and meanwhile low correlation with leptin. Compared with normal group, Quantitative Real-time Polymerase Chain Reaction, Western Blot, immunohistochemistry, immunofluorescence and other subsequent animal experiments on the 8 filtered genes were applied in the adipose tissue of C57BL/6J and OB/OB mice, we found that the expression of glycoprotein IX (GP9), MHC class I polypeptide related sequence B (MICB), CDGSH iron sulfur domain 1 (CISD1) and Pre-mRNA-processing factor 19 (PRPF19) in protein level were down-regulated in visceral fat of obese mice induced by high-fat diet. And these obese mice showed decreased levels of mannosidase alpha class 2B member 1 (MAN2B1) and TYRO protein tyrosine kinase binding protein (TYROBP) in their subcutaneous adipose tissue, while phosphate and tension homology deleted on chromosome pten (PTEN) and eukaryotic translation initiation factor 4E binding protein 1 (EIF4EBP1) had been sufficiently studied. The pattern in OB/OB mouse was dramatically different with these patterns. Through double immunofluorescence staining, it was found that all genes were co-localized with CD206, which was the marker of M1 and M2 macrophage in adipose tissue. Further interacting drugs for the genes were calculated and subsequently circumin and beta-catonin were proved to be interacting with these genes and functioned in inhibiting food-induced obesity. Further knowledge gragh was constructed to illustrate the relationship between obesity, filtered genes, drugs and related concepts. To summarize our findings, we discovered some new differential genes in adipose tissue which could potentially establish a new connection between adipose tissue macrophages and food-induced obesity. Furthermore, they offered unique insights into exploring the mechanism of adipose tissue genes related to food-induced obesity and related diseases.

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Transcriptome profiling of subcutaneous and visceral adipose tissue from obese individuals

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