细菌
细胞毒性
光动力疗法
失明
抗菌活性
抗生素
角膜炎
细菌性结膜炎
细菌细胞结构
毒性
微生物学
体外
材料科学
生物物理学
化学
医学
生物
生物化学
皮肤病科
有机化学
验光服务
遗传学
作者
Chen Peng,Wenjie Sun,Chengcheng Zhou,Sujing Qiang,Meijuan Jiang,Jacky W. Y. Lam,Zheng Zhao,Ryan T. K. Kwok,Wenting Cai,Ben Zhong Tang
出处
期刊:Biomaterials
[Elsevier]
日期:2021-12-01
卷期号:279: 121227-121227
被引量:15
标识
DOI:10.1016/j.biomaterials.2021.121227
摘要
Bacterial keratitis (BK) is one of the most commonly leading causes of visual impairment and blindness worldwide, and suffers the risk of drug-resistant infections due to the abuse of antibiotics. Herein, we report a cationic diphenyl luminogen with aggregation-induced emission called IQ-Cm containing isoquinolinium and coumarin units for theranostic study of BK. IQ-Cm has no obvious cytotoxicity to mammalian cells below a certain concentration, and could preferentially bind to bacteria over mammalian cells. IQ-Cm can be used as a sensitive self-reporting probe to rapidly discriminate live and dead bacteria by the visual emission colors. The intrinsic dark toxicity to bacteria and generation of reactive oxygen species under light irradiation endow IQ-Cm with excellent antibacterial activity in vitro and in BK rabbit models infected with S. aureus. The present study provides a sensitive and efficient theranostic strategy for rapid discrimination of various bacterial states and the combined treatment of BK based on the intrinsic dark antibacterial activity and photodynamic therapy effect.
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