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An alternative splicing program promotes adipose tissue thermogenesis.

eLife | Sep 16, 2016

Alternative pre-mRNA splicing expands the complexity of the transcriptome and controls isoform-specific gene expression. Whether alternative splicing contributes to metabolic regulation is largely unknown. Here we investigated the contribution of alternative splicing to the development of diet-induced obesity. We found that obesity-induced changes in adipocyte gene expression include alternative pre-mRNA splicing. Bioinformatics analysis associated part of this alternative splicing program with sequence specific NOVA splicing factors. This conclusion was confirmed by studies of mice with NOVA deficiency in adipocytes. Phenotypic analysis of the NOVA-deficient mice demonstrated increased adipose tissue thermogenesis and improved glycemia. We show that NOVA proteins mediate a splicing program that suppresses adipose tissue thermogenesis. Together, these data provide quantitative analysis of gene expression at exon-level resolution in obesity and identify a novel mechanism that contributes to the regulation of adipose tissue function and the maintenance of normal glycemia.

Pubmed ID: 27635635 RIS Download

Mesh terms: Adipose Tissue | Alternative Splicing | Animals | Antigens, Neoplasm | Computational Biology | Hyperglycemia | Mice, Inbred C57BL | Mice, Knockout | Obesity | RNA-Binding Proteins | Thermogenesis

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