Growth differentiation factor 15 protects against the aging-mediated systemic inflammatory response in humans and mice.

Aging Cell
Ji Sun MoonHyon-Seung Yi

Abstract

Mitochondrial dysfunction is associated with aging-mediated inflammatory responses, leading to metabolic deterioration, development of insulin resistance, and type 2 diabetes. Growth differentiation factor 15 (GDF15) is an important mitokine generated in response to mitochondrial stress and dysfunction; however, the implications of GDF15 to the aging process are poorly understood in mammals. In this study, we identified a link between mitochondrial stress-induced GDF15 production and protection from tissue inflammation on aging in humans and mice. We observed an increase in serum levels and hepatic expression of GDF15 as well as pro-inflammatory cytokines in elderly subjects. Circulating levels of cell-free mitochondrial DNA were significantly higher in elderly subjects with elevated serum levels of GDF15. In the BXD mouse reference population, mice with metabolic impairments and shorter survival were found to exhibit higher hepatic Gdf15 expression. Mendelian randomization links reduced GDF15 expression in human blood to increased body weight and inflammation. GDF15 deficiency promotes tissue inflammation by increasing the activation of resident immune cells in metabolic organs, such as in the liver and adipose tissues of 20-m...Continue Reading

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Citations

Jan 20, 2021·Cellular and Molecular Life Sciences : CMLS·Susanne KlausMario Ost
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Datasets Mentioned

BETA
GN843

Methods Mentioned

BETA
biopsies
flow cytometry
FACS
PCR

Software Mentioned

R package DESeq2
R package PIANO
ieugwasr
GEPIA2
zingeR R
limma R
DESeq2
limma
GraphPad PRISM
TwoSampleMR

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