Ce(IV) doped TiO2 nanoparticles and the effect on proliferation of BEL7402 human hepatoma cells

To investigate nanoparticles' antiturnor effect, a globose 30 similar to 35nm Ce(IV) doped Titanium dioxide nanoparticlcs (CDT) were prepared by impregnation method and characterized by X-ray diffraction (XRD) and transmission electron microscopy(TEM). Proliferation of BEL7402 human Hepatoma cells was studied in vitro by using fluorescence microscopy and Flow Cytometry. The results show that cerium elements doping enhanced thermal stability of nano-size titanium dioxide to 800 degrees C. With UV irradiated for 8min, BEL7402 were induced a dose-dependent apoptosis by CDT, about 28.2%, 41.5% and 88.3% cells were induced apoptosis after 24h at concentration of 60, 120 and 180ug/ml respectively, relative to 3.9% of that of control group cell just only in the presence of UV.