Hao Tian Yan, Moon-Sun Jang, Changling Liu, Qiang Fu, Bo Wang, Yan Fu, Jung Hee Lee, Hong Yu Yang
Anti-tumor therapies reliant on reactive oxygen species (ROS) as primary therapeutic agents face challenges due to a limited oxygen substrate. Photodynamic therapy (PDT) is particularly hindered by inherent hypoxia, while chemodynamic therapy (CDT) encounters obstacles from insufficient endogenous hydrogen peroxide (H2 O2 ) levels. In this study, we engineered biodegradable tumor microenvironment (TME)-activated hollow mesoporous MnO2 -based nanotheranostic agents, designated as HAMnO2 A. This construct entails loading artemisinin (ART) into the cavity and surface modification with a mussel-inspired polymer ligand, namely hyaluronic acid-linked poly(ethylene glycol)-diethylenetriamine-conjugated (3,4-dihydroxyphenyl) acetic acid, and the photosensitizer Chlorin e6 (mPEG-HA-Dien-(Dhpa/Ce6)), facilitating dual-modal imaging-guided PDT/CDT synergistic therapy...
March 23, 2024: Journal of Colloid and Interface Science