Real-time monitoring of anticancer drug release in vitro and in vivo on titania nanoparticles triggered by external glutathione

► Doxorubicin appeared to adsorb efficiently on TiO2 nanoparticles. ► Fluorescence of doxorubicin was quenched substantially by TiO2. ► Real-time drug release can be monitored in vitro and in vivo by external glutathione.