Label-free profiling of white adipose tissue of rats exhibiting high or low levels of intrinsic exercise capacity

Proteomics
Kelly Bowden-DaviesJatin G Burniston

Abstract

Divergent selection has created rat phenotypes of high- and low-capacity runners (HCR and LCR, respectively) that have differences in aerobic capacity and correlated traits such as adiposity. We analyzed visceral adipose tissue of HCR and LCR using label-free high-definition MS (elevated energy) profiling. The running capacity of HCR was ninefold greater than LCR. Proteome profiling encompassed 448 proteins and detected 30 significant (p <0.05; false discovery rate <10%, calculated using q-values) differences. Approximately half of the proteins analyzed were of mitochondrial origin, but there were no significant differences in the abundance of proteins involved in aerobic metabolism. Instead, adipose tissue of LCR rats exhibited greater abundances of proteins associated with adipogenesis (e.g. cathepsin D), ER stress (e.g. 78 kDa glucose response protein), and inflammation (e.g. Ig gamma-2B chain C region). Whereas the abundance antioxidant enzymes such as superoxide dismutase [Cu-Zn] was greater in HCR tissue. Putative adipokines were also detected, in particular protein S100-B, was 431% more abundant in LCR adipose tissue. These findings reveal low running capacity is associated with a pathological profile in visceral adipose...Continue Reading

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Citations

Jul 15, 2015·Cell Metabolism·Juleen R Zierath, Harriet Wallberg-Henriksson
Oct 18, 2019·Proteomics·Kanchana SrisawatJatin G Burniston
Feb 9, 2020·International Journal of Sport Nutrition and Exercise Metabolism·Andrew M HolwerdaLuc J C van Loon
Jul 1, 2020·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Stuart J HeskethJatin G Burniston
Aug 1, 2019·Cellular and Molecular Life Sciences : CMLS·Francesca RiuzziRosario Donato
Nov 10, 2020·Biological Reviews of the Cambridge Philosophical Society·Kang Nian YapWendy R Hood

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