Advertisement

 

 

CK2 modulates adipocyte insulin-signaling and is up-regulated in human obesity.

CK2 modulates adipocyte insulin-signaling and is up-regulated in human obesity.
Author Information (click to view)

Borgo C, Milan G, Favaretto F, Stasi F, Fabris R, Salizzato V, Cesaro L, Belligoli A, Sanna M, Foletto M, Prevedello L, Vindigni V, Bardini R, Donella-Deana A, Vettor R,


Borgo C, Milan G, Favaretto F, Stasi F, Fabris R, Salizzato V, Cesaro L, Belligoli A, Sanna M, Foletto M, Prevedello L, Vindigni V, Bardini R, Donella-Deana A, Vettor R, (click to view)

Borgo C, Milan G, Favaretto F, Stasi F, Fabris R, Salizzato V, Cesaro L, Belligoli A, Sanna M, Foletto M, Prevedello L, Vindigni V, Bardini R, Donella-Deana A, Vettor R,

Advertisement

Scientific reports 2017 12 147(1) 17569 doi 10.1038/s41598-017-17809-w
Abstract

Insulin plays a major role in glucose metabolism and insulin-signaling defects are present in obesity and diabetes. CK2 is a pleiotropic protein kinase implicated in fundamental cellular pathways and abnormally elevated in tumors. Here we report that in human and murine adipocytes CK2-inhibition decreases the insulin-induced glucose-uptake by counteracting Akt-signaling and GLUT4-translocation to the plasma membrane. In mice CK2 acts on insulin-signaling in adipose tissue, liver and skeletal muscle and its acute inhibition impairs glucose tolerance. Notably, CK2 protein-level and activity are greatly up-regulated in white adipose tissue from ob/ob and db/db mice as well as from obese patients, regardless the severity of their insulin-resistance and the presence of pre-diabetes or overt type 2 diabetes. Weight loss obtained by both bariatric surgery or hypocaloric diet reverts CK2 hyper-activation to normal level. Our data suggest a central role of CK2 in insulin-sensitivity, glucose homeostasis and adipose tissue remodeling. CK2 up-regulation is identified as a hallmark of adipose tissue pathological expansion, suggesting a new potential therapeutic target for human obesity.

Submit a Comment

Your email address will not be published. Required fields are marked *

three × 3 =

[ HIDE/SHOW ]