Fig. 2: SIRT1 promotes the EMT and increase metastatic potential in melanoma cells

a Sk-Mel-28 cells stably expressing vector or Flag-SIRT1 were harvested and protein expression was detected by western blot analysis. b, c Sk-Mel-28 cells stably expressing vector or Flag-SIRT1 were plated in the upper chamber of the transwell filters for 24 h. Cells migrating to the underside of the transwell insert were then counted. d A375-shSIRT1 and control cells were harvested, and protein expression was detected by western blot analysis. e, f A375-shSIRT1 and control cells were plated in the upper chamber of the transwell filters for 24 h. Cells migrating to the underside of the transwell insert were then counted. g Immunofluorescence staining of actin filaments (Phalloidin) in Sk-Mel-28 cells stably expressing either vector or Flag-SIRT1. Bar = 10 μm