image:The hallmarks of adipose tissue dysfunction view more
Credit: Sakers et al./Cell
Obesity is known to cause cardiometabolic diseases like hypertension and diabetes but attributing these diseases to merely an overabundance of fat is a simplification. On a basic level, fat acts as a receptacle to store energy, but upon a closer look it is an essential actor in vital bodily processes like the immune response, the regulation of insulin sensitivity, and maintenance of body temperature. In a review published in the journal Cell on February 3rd, researchers argue that the negative health effects of obesity stem not simply from an excess of fat but from the decline in its ability to respond to changes, or in other words, its plasticity.
The makeup and functioning of this tissue changes in response to weight fluctuations and aging. As fat declines in plasticity due to aging and obesity, it loses its ability to respond to bodily cues. In the current model of this phenomenon, the rapid growth of adipose tissue outpaces its blood supply, depriving the fat cells of oxygen and causing the accumulation of cells that no longer divide. This leads to insulin resistance, inflammation, and cell death accompanied by the uncontrolled spill of lipids from these cells.
The central role of adipose tissue dysfunction in disease and the incredible plasticity of fat tissue supports the promise of modulating fat tissue phenotypes for therapeutic purposes, write the authors, led by Claudio J. Villanueva (@ClaudioVillanu) from the College of Life Sciences/David Geffen School of Medicine and Patrick Seale (@LabSeale) from Perelman School of Medicine at the University of Pennsylvania. Many questions and opportunities for future discovery remain, which will yield new insights into adipose tissue biology and hopefully lead to improved therapies for human disease.
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Research reported in this publication was supported by NIDDK at the National Institutes of Health, the UCLA Life Sciences Fund, and UCLA Graduate Council Diversity Fellowship. The authors declare no competing interests.
Cell, Sakers et al. Adipose tissue plasticity in health and disease https://www.cell.com/cell/fulltext/S0092-8674(21)01454-9
Cell (@CellCellPress), the flagship journal of Cell Press, is a bimonthly journal that publishes findings of unusual significance in any area of experimental biology, including but not limited to cell biology, molecular biology, neuroscience, immunology, virology and microbiology, cancer, human genetics, systems biology, signaling, and disease mechanisms and therapeutics. Visit: http://www.cell.com/cell. To receive Cell Press media alerts, contact press@cell.com.
Literature review
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Adipose-tissue plasticity in health and disease
3-Feb-2022
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