Figure 5. Suppression of proliferation by fisetin involves Mitf.
(A) Western blot and RT-PCR analysis of fisetin treated cells showed a dose-dependent inhibitory effect of fisetin on Mitf protein and mRNA levels. Equal loading was confirmed by β-actin. Data shown are representative of at least two independent experiments with similar results (B) Western blot analysis of 451Lu cell transfected with the Mitf expression plasmid pCMV5a-Mitf (1μg) and treated without/with fisetin (60 μM) for 24 h. Equal loading was confirmed by β-actin (C) Flowcytometric analysis of 451Lu cell transfected with the Mitf expression plasmid pCMV5a-Mitf (1μg) and treated without/with fisetin (60 μM) for 24 h. Following FACS analysis, cellular DNA histograms were analyzed by ModiFitLT V3.0. The data are representative of duplicate experiments.