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Title: Differential regulation of the unfolded protein response in outbred deer mice and susceptibility to metabolic disease
Endoplasmic reticulum (ER) stress has been causatively linked to the onset of various pathologies. However, if and how inherent variations in the resulting unfolded protein response (UPR) affect the predisposition to ER stress-associated metabolic conditions remains to be established. By using genetically diverse deer mice (Peromyscus maniculatus) as a model, we show that the profile of tunicamycin-induced UPR in fibroblasts isolated at puberty varies between individuals and predicts deregulation of lipid metabolism and diet-induced hepatic steatosis later in life. Among the different UPR targets tested, CHOP more consistently predicted elevated plasma cholesterol and hepatic steatosis. Compared to baseline levels or inducibility, the maximal intensity of the UPR following stimulation best predicts the onset of pathology. Differences in the expression profile of the UPR recorded in cells from different populations of deer mice correlate with the varying response to ER stress in altitude adaptation. Our data suggest that the response to ER stress in cultured cells varies among individuals and its profile early in life may predict the onset of ER stress-associated disease in the elderly.  more » « less
Award ID(s):
1736150
NSF-PAR ID:
10085626
Author(s) / Creator(s):
; ; ; ; ;
Date Published:
Journal Name:
Disease Models & Mechanisms
ISSN:
1754-8403
Page Range / eLocation ID:
dmm.037242
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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