Carbon-Dots-Mediated Improvement of Antimicrobial Activity of Natural Products

抗菌剂 生物相容性 天然产物 材料科学 生物膜 碳纤维 细菌 纳米技术 化学 有机化学 生物 遗传学 复合数 复合材料 冶金
作者
Babar Khan,Jie Zhang,Samran Durrani,Haiyan Wang,Ali Nawaz,Faisal Durrani,Yonghao Ye,Fu‐Gen Wu,Fengming Lin
出处
期刊:ACS Applied Materials & Interfaces [American Chemical Society]
卷期号:16 (36): 47257-47269
标识
DOI:10.1021/acsami.4c09689
摘要

The development of new microbicidal compounds has become a top priority due to the emergence and spread of drug-resistant pathogenic microbes. In this study, blue-emitting and positively charged carbon dots (CDs), called Du-CDs, were fabricated for the first time utilizing the natural product extract of endophyte Diaporthe unshiuensis YSP3 as raw material through a one-step solvothermal method, which possessed varied functional groups including amino, carboxyl, hydroxyl, and sulfite groups. Interestingly, Du-CDs exhibited notably enhanced antimicrobial activities toward both bacteria and fungi as compared to the natural product extract of YSP3, with low minimum inhibitory concentrations. Moreover, Du-CDs significantly inhibited the formation of biofilms. Du-CDs bound with the microbial cell surface via electronic interaction or hydrophobic interaction entered the microbial cells and were distributed fully inside the cells. Du-CDs caused cell membrane damage and/or cell division cycle interruption, resulting in microbial cell death. Moreover, Du-CDs exhibited an improved antimicrobial effect and accelerated wound healing ability with good biocompatibility in the mouse model. Overall, we demonstrate that the formation of CDs from fungal natural products presents a promising and potential means to develop novel antimicrobial agents with great fluorescence, improved microbiocidal effect and wound healing capacity, and good biosafety for combating microbial infections.
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