Dose response of AP2M1 phosphorylation to treatment with 1 (A), 8g (B), and 21b (C) by Western analysis in lysates derived from Huh7 cells. Representative membranes (from two independent experiments) blotted with anti-phospho-AP2M1 (pAP2M1), anti-AP2M1 (AP2M1), and anti-Actin (Actin) antibodies and quantified data of pAP2M1/actin protein ratio normalized to DMSO controls are shown. ** p < 0.01, *** p < 0.001 by 2-tailed unpaired t test.