Metal-phenolic nanoparticles enhance low temperature photothermal therapy for bacterial biofilm in superficial infections
文献类型： 外文期刊
作者： Ye, Yang 2 ; Zheng, Qinqin 1 ; Wang, Ziqi 1 ; Wang, Shanshan 1 ; Lu, Zhouyu 2 ; Chu, Qiang 2 ; Liu, Yong 3 ; Yao, Ke 2 ; Wei, Bing 3 ; Han, Haijie 2 ; Chen, Hongping 1 ; Zhang, Xiangchun 1 ;
作者机构： 1.Chinese Acad Agr Sci, Tea Res Inst, Key Lab Tea Qual & Safety Control, Minist Agr & Rural Affairs, Hangzhou 310008, Peoples R China
2.Zhejiang Univ, Affiliated Hosp 2, Eye Ctr,Zhejiang Prov Engn Inst Eye Dis, Sch Med,Zhejiang Prov Key Lab Ophthalmol,Zhejiang, Hangzhou 310009, Peoples R China
3.Fuyang Normal Univ, Sch Biol & Food Engn, Fuyang 236037, Peoples R China
关键词： Polyphenols; Biofilm infections; Metal-phenolic nanoparticles; Mild photothermal therapy; Quinoprotein
期刊名称：JOURNAL OF NANOBIOTECHNOLOGY （ 影响因子：12.6； 五年影响因子：12.3 ）
ISSN：
年卷期： 2024 年 22 卷 1 期
页码：
收录情况： SCI
摘要： Bacterial infections, especially induced by multidrug-resistant pathogens, have become a significant global health concern. In the infected tissues, biofilms not only serve as a source of nutrients but also act as protective barriers that impede antibiotic penetration. Herein, we developed tea polyphenols epigallocatechin gallate (EGCG) Au nanoparticles (E-Au NPs) through direct one-step self-assembly methods by EGCG chelating with Au ions to eradicate antibiotic-resistant bacteria methicillin-resistant Staphylococcus aureus (MRSA) and prevent the formation of biofilm under near-infrared (NIR) irradiation. The outstanding antibacterial effect involved in mild photothermal therapy, reactive oxygen species production, pathogenicity-related genes regulation, and quinoprotein formation that were specific to the polyphenol-based NPs. The excellent antibacterial and anti-inflammatory therapeutic efficacy of E-Au NPs was validated and topically applied in murine MRSA-infected skin wounds and keratitis model in vivo to kill bacteria, reduce the inflammation response and promote wound healing. Furthermore, the ophthalmic and systemic biosafety profiles were thoroughly evaluated while no significant side effects were revealed achieving a balance between high-efficiency antibacterial properties and biocompatibility. This study provides an effective therapeutic agent of metal-phenolic materials for superficial tissue infection with favorable prognosis and potential in clinical translation.
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