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Rare progerin-expressing preadipocytes and adipocytes contribute to tissue depletion over time. | LitMetric

AI Article Synopsis

Article Abstract

Accumulation of progerin is believed to underlie the pathophysiology of Hutchinson-Gilford progeria syndrome, a disease characterized by clinical features suggestive of premature aging, including loss of subcutaneous white adipose tissue (sWAT). Although progerin has been found in cells and tissues from apparently healthy individuals, its significance has been debated given its low expression levels and rare occurrence. Here we demonstrate that sustained progerin expression in a small fraction of preadipocytes and adipocytes of mouse sWAT (between 4.4% and 6.7% of the sWAT cells) results in significant tissue pathology over time, including fibrosis and lipoatrophy. Analysis of sWAT from mice of various ages showed senescence, persistent DNA damage and cell death that preceded macrophage infiltration, and systemic inflammation. Our findings suggest that continuous progerin expression in a small cell fraction of a tissue contributes to aging-associated diseases, the adipose tissue being particularly sensitive.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5493617PMC
http://dx.doi.org/10.1038/s41598-017-04492-0DOI Listing

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