Figure 5. Effect of Ag/TiO2 NPs (silver-modified TiO2 nanoparticles) on (A) MCF-7 (low metastatic potential) and (B) MDA-MB-231 (human breast adenocarcinoma, highly invasive) breast cancer epithelial cell proliferation. Effect of photoexcited Ag/TiO2 NPs on the proliferation of (C) MCF-7 and (D) MDA-MB-231 breast cancer epithelial cells. Untreated cells were used as a negative control. Moreover, cells treated with UV-A light without TiO2 were used as an extra negative control. As a positive control, cells treated for 24 h with cis-platin (0.8 mg/ml) were used. *p<0.05 vs. negative control (untreated) cells, based on the Kruskal-Wallis test. Data represent the mean±standard deviation from five independent experiments.
