Millipore) supplemented with protease and phosphatase inhibitors (Biotool).
Lysates were separated from insoluble material by centrifugation (12,000
RPM, 15 min, 4°C) and total protein content was determined by BCA
assay (ThermoFisher). Equal protein ammounts (~10 μg) were
resolved by SDS-PAGE and transferred to polyvinylidene fluoride (PVDF)
membranes (EMD Millipore). Membranes were immunoblotted with the indicated
antibodies: p-IR/IGF1R (#3024, Cell Signaling), IRβ (sc-711, Santa
Cruz), IGF1Rβ (#3027, Cell Signaling), p-IRS1 (09–432,
Millipore), IRS1 (611394, BD), p-AktS473 (#9271, Cel Signaling),
Akt pan (#4685, Cell Signaling), p-FoxO1/3 (#9464, Cell
Signaling), FoxO1 (#9454, Cell Signaling), p-ERK1/2 (#9101, Cell
Signaling), ERK1/2 (#9102, Cell Signaling), CPT1A (ab128568,
Abcam), HADHA (ab54477, Abcam), SREBP1 (sc-8984, Santa Cruz), Fatty Acid
Synthase (ab22759, Abcam), Vinculin (#3574, Chemicon).