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- W2894534310 abstract "It is a huge challenge to avoid irreversible damage to normal tissues during irradiation in photodynamic therapy (PDT) for cancer. An effective strategy is to develop smart photosensitizers, which exhibit amplified generation of reactive oxygen species (ROS) through triggering specific reaction in the tumor microenvironment. In this work, we designed a class of glutathione (GSH)-activatable photosensitizers (Ir1 and Ir4) based on an effective strategy of GSH-induced nucleophilic substitution reaction. The addition of GSH, induced changes in both phosphorescence intensity and lifetime of photosensitizers with high sensitivity. Importantly, the amount of singlet oxygen generated was increased significantly by GSH-induced activation reaction. Hence, the photosensitizers can selectively distinguish cancer cells from normal cells through luminescence and lifetime imaging, and can amplify PDT effects in cancer cells, owing to the evidently higher level of GSH compared to normal cells. This work presents a novel paradigm for GSH-amplified PDT against cancer cells and provides a new avenue for smart-responsive theranostic systems that can avoid nonspecific damage to normal cells." @default.
- W2894534310 created "2018-10-05" @default.
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- W2894534310 date "2018-11-08" @default.
- W2894534310 modified "2023-10-12" @default.
- W2894534310 title "Rational Design of Phosphorescent Iridium(III) Complexes for Selective Glutathione Sensing and Amplified Photodynamic Therapy" @default.
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- W2894534310 doi "https://doi.org/10.1002/cbic.201800507" @default.
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