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| Highly-efficient photosensitizer based on AIEgen-decorated porphyrin for protein photocleaving |
| Qiang Wanga,b, Qingqing Chena,b, Guoyu Jianga,b, Mengting Xiab, Mengjiao Wangb, Yongdong Lib, Xiaoming Mab, Jianguo Wanga,b, Xinggui Guc |
a College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China;
b Key Laboratory of Organo-Pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, China;
c Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Guide An AIEgen decorated porphyrin (TPETPyP) with 1O2 quantun yield as high as 0.85 in PBS was facilely prepared through a simple one-step reaction for efficient photocleavage of proteins in PDT. |
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Abstract An AIEgen decorated porphyrin (TPETPyP) was easily obtained through a one-step reaction. The bulky TPE in TPETPyP greatly impeded the intermolecular π-π stacking of the porphyrin core, which significantly suppressed aggregation-caused quenching (ACQ) effect of TPETPyP in aqueous solution. The four pyridinium salts formed in TPETPyP also render the whole molecule water solubility, which eliminated its aggregation. TPETPyP exhibited 1O2 quantum yield as high as 0.85 in PBS. Moreover, it also showed high binding affinity to proteins, the major biotarget of 1O2. The high 1O2 quantum yield plus the great binding ability of TPETPyP toward proteins makes it a highly-efficient protein photocleaving agent. Protein electrophoresis experiments demonstrated that TPETPyP can photocleave BSA upon visible light irradiation, indicating that TPETPyP can act as a promising photosensitizer (PS) in PDT. The work here will provide a facile strategy to utilize AIEgens modified traditional PSs for photodynamic therapy (PDT).
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Received: 15 July 2019
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| Fund: We thank the National Natural Science Foundation of China (Nos. 21663005, 21871060, 21804022 and 21702016), the Natural Science Foundation of Jiangxi Province (Nos. 2018ACB21009, 20181BAB213007), the Science and Technology Project of the Education Department of Jiangxi Province of China (No. GJJ170846), the Special Graduate Student Innovation Fund of Jiangxi Province (No. YCX18B007) and Beijing National Laboratory for Molecular Sciences (No. BNLMS201813) for the financial support. |
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Corresponding Authors:
Guoyu Jiang, Jianguo Wang, Xinggui Gu
E-mail: jiangguoyu@mail.ipc.ac.cn;wangjg@iccas.ac.cn;guxinggui@mail.buct.edu.cn
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