Regulation of the stress proteome by SCD1

Cytotoxic stress activates stress-activated kinases, initiates adaptive mechanisms, including the unfolded protein response (UPR) and autophagy, and induces programmed cell death. Fatty acid unsaturation prevents cytotoxic stress but the mechanisms are diffuse. We investigated changes in the proteome of NIH-3T3 fibroblasts upon induction of cytotoxic stress (valinomycin or myrtucommulone A) and SCD1 inhibition (CAY10566) and addressed the potential of PI(18:1/18:1) and PI(16:0/16:0) to compensate for the decrease in SCD1 activity.