Nanotheranostics 2017; 1(2):196-207. doi:10.7150/ntno.18576 This issue
1. Center for Self-assembly and Complexity, Institute of Basic Science (IBS), Pohang, 37673, Korea;
2. Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea.
It is widely known that the therapeutic effect of nanoparticle-based chemotherapeutics could be greatly enhanced by the introduction of the photodynamic effect. Herein we report a chlorin e6-incorporated mesoporous silica nanoparticles (MSNs) covered with a polyethylene glycol shell conjugated via a singlet oxygen-sensitive labile bis(alkylthio)alkene linker (CeAP-L-PEG). In this study, single irradiation with biocompatible red light induced both intracellular doxorubicin release and photochemical internalization, and consequently enhanced anti-cancer effect was observed in vitro and in vivo. This study suggests the potential of our precisely designed nanoparticle system for photodynamically assisted chemotherapy.
Keywords: Mesoporous silica, Singlet oxygen, Photodynamic therapy, Chemotherapy, Photochemical internalization.