Figure 4.
Cl-amidine and bisindolylmaleimide-1-mediated inhibition of EMV release increases the apoptosis of PC3 and MCF-7 cells treated with 5-FU. The Guava Viacount Cell Death Assay shows that PC3 and MCF-7 cells that were given 5-FU together with Cl-amidine, bisindolylmaleimide-I, or with a combination of Cl-amidine and bisindolylmaleimide-I, had significantly reduced levels of cell viability within 24 h compared to PC3 and MCF-7 cells receiving no EMV inhibitors and given only 5-FU. Bisindolylmaleimide-I and Cl-amidine had no significant effect on cell viability on their own. Data presented are the mean ± SEM of three independent experiments performed in triplicate (** p ≤ 0.01; *** p ≤ 0.001; **** p ≤ 0.0001 were considered statistically significant compared to the drug-treated control in the absence of inhibitors).