Journal
TRENDS IN BIOCHEMICAL SCIENCES
Volume 47, Issue 6, Pages 531-546Publisher
CELL PRESS
DOI: 10.1016/j.tibs.2022.02.009
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Funding
- National Institutes of Health [R01DK094004, R01DK116005, R01DK127175]
- Medical Research Council Career Development Award [MR/S007091/1]
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This article discusses the role of insulin in adipocytes and its interaction with central carbon metabolism pathways, which is crucial for understanding insulin signaling and metabolic networks.
Insulin stimulates glucose uptake into adipocytes via mTORC2/AKT signaling and GLUT4 translocation and directs glucose carbons into glycolysis, glycerol for TAG synthesis, and de novo lipogenesis. Adipocyte insulin resistance is an early indicator of type 2 diabetes in obesity, a worldwide health crisis. Thus, understanding the interplay between insulin signaling and central carbon metabolism pathways that maintains adipocyte function, blood glucose levels, and metabolic homeostasis is critical. While classically viewed through the lens of individual enzyme-substrate interactions, advances in mass spectrometry are beginning to illuminate adipocyte signaling and metabolic networks on an unprecedented scale, yet this is just the tip of the iceberg. Here, we review how 'omits approaches help to elucidate adipocyte insulin action in cellular time and space.
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