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Curcumin (Cur) can be used as a photosensitizer in the photodynamic therapy (PDT) of cancer, but its low bioavailability limits further clinical application. A mesoporous silica-based drug delivery system (PEGylated mesoporous silica nanoparticles, MSN-PEG@Cur) was designed to solve the problem. The successful preparation of MSN-PEG@Cur was characterized by several physico-chemistry techniques. The endocytosis, ROS generation and in vitro anti-cancer efficacy of MSN-PEG@Cur were evaluated in detail step by step. The results indicated that MSN-PEG@Cur could be effectively endocytosed into cells and release Cur, which can promptly generate ROS upon irradiation, achieving effective PDT in cancer treatment. This MSNs-based drug delivery system provides an alternative strategy for Cur loading and PDT of cancer.
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Kuang et al. (2020) studied this question.
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