F Immunoblot of HCT116 whole cell lysate using antibodies against the indicated proteins upon treatment of the cells as indicated for 16h (NEN (low) 0.6 µM or NEN (High) 1.2 µM, Domperidone (Domp) 30 µM) Cells were transfected either with control (siCtrl) or UPP1-targeting (siUPP1) siRNAs 48h prior to treatment. 