An Intracellular H2O2‐Responsive AIEgen for the Peroxidase‐Mediated Selective Imaging and Inhibition of Inflammatory Cells |
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| Authors: | Dr. Yong Cheng Dr. Jun Dai Dr. Chunli Sun Dr. Rui Liu Prof. Tianyou Zhai Prof. Xiaoding Lou Prof. Fan Xia |
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| Affiliation: | 1. Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, P. R. China;2. State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, P. R. China;3. Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China;4. Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, P. R. China |
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| Abstract: | Inflammatory cells have gained widespread attention because inflammatory diseases increase the risk for many types of cancer. Therefore, it is urgent and important to implement detection and treatment methods for inflammatory cells. Herein, we constructed a theranostic probe with aggregation‐induced emission (AIE) characteristics, in which tetraphenylethene (TPE) was modified with two tyrosine (Tyr) moieties. Owing to the H2O2‐dependent, enzyme‐catalyzed dityrosine formation, Tyr‐containing TPE ( TT ) molecules crosslink through dityrosine linkages to induce the formation of hydrophobic aggregates, activating the AIE process in inflammatory cells that contain H2O2 and overexpress myeloperoxidase. The emission turn‐on resulting from the crosslinking of TT molecules could be used to distinguish between inflammatory and normal cells. Moreover, the massive TT aggregates induced mitochondria damage and cell apoptosis. This study demonstrates that the H2O2‐responsive peroxidase‐activated AIEgen holds great promise for inflammatory‐cell selective imaging and inhibition. |
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| Keywords: | aggregation-induced emission hydrogen peroxide inflammatory cells peroxidase theranostics |
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