In Situ Fabrication of Silver Nanoparticle-Decorated Polymeric Vesicles for Antibacterial Applications

IF 2.5 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY ChemistryOpen Pub Date : 2024-04-22 DOI:10.1002/open.202300223

Fen Zhang, Qian Yao, Yanling Niu, Xiaoqi Chen, Haijun Zhou, Lu Bai, Zejuan Kong, Yantao Li, Hua Cheng

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Abstract

Silver/polymeric vesicle composite nanoparticles with good antibacterial properties were fabricated in this study. Silver nanoparticles (AgNPs) were prepared in situ on cross-linked vesicle membranes through the reduction of silver nitrate (AgNO₃) using polyvinylpyrrolidone (PVP) via coordination bonding between the Ag⁺ ions and the nitrogen atoms on the vesicles. X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV-vis), and transmission electron microscopy (TEM) analyses confirmed the formation of AgNPs on the vesicles. The antibacterial test demonstrated good antibacterial activity against both Gram-negative bacteria (Escherichia coli) and Gram-positive bacteria (Staphylococcus aureus) for the produced AgNP-decorated vesicles. The minimum inhibitory concentration (MIC) values of the AgNP-decorated vesicles for E. coli and S. aureus were 8.4 and 9.6 μg/mL, respectively. Cell viability analysis on the A549 cells indicated that the toxicity was low when the AgNP concentrations did not exceed the MIC values, and the wound healing test confirmed the good antibacterial properties of the AgNP-decorated vesicles.

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用于抗菌应用的银纳米粒子装饰聚合物囊泡的原位制备技术

本研究制备了具有良好抗菌性能的银/聚合物囊泡复合纳米粒子。利用聚乙烯吡咯烷酮（PVP）还原硝酸银（AgNO3），通过 Ag+ 离子与囊泡上的氮原子之间的配位键作用，在交联囊泡膜上原位制备银纳米粒子（AgNPs）。X 射线衍射 (XRD)、紫外可见光谱 (UV-vis) 和透射电子显微镜 (TEM) 分析证实了 AgNPs 在囊泡上的形成。抗菌测试表明，经 AgNP 装饰的囊泡对革兰氏阴性菌（大肠杆菌）和革兰氏阳性菌（金黄色葡萄球菌）均具有良好的抗菌活性。AgNP 装饰囊泡对大肠杆菌和金黄色葡萄球菌的最小抑菌浓度 (MIC) 值分别为 8.4 和 9.6 μg/mL。对 A549 细胞进行的细胞存活率分析表明，当 AgNP 浓度不超过 MIC 值时，毒性很低。

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ChemistryOpen CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

4.80

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4.30%

发文量

143

审稿时长

1 months

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