核心外 ZnO2@基于的金属有机框架具有低周转率,双催化活性,用于生物安全的生物膜分散和免疫调节
Renfei Wu1,2, Tianjin Ge1, Tianrong Yu1,2
1Institute of Functional Nano and Soft Materials, Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu 215123, China.
ACS applied materials & interfaces
|May 21, 2025
概括
一种新型的化物加载过氧化物/基金属有机框架 (ZnO2@CeMOF/Br) 有效地分散生物膜并清除细菌. 这种非抗生素策略通过调节免疫反应和预防败血症显示出感染控制的前景.
科学领域:
- 纳米技术和材料科学 材料科学
- 传染病和免疫学 传染病和免疫学
- 生物医学工程 生物医学工程
背景情况:
- 抗生素耐药性的增加需要替代的感染控制策略.
- 生物膜分散是一种潜在的策略,但存在分散细菌引起的败血症的风险.
- 现有的方法缺乏有效的非抗生素方法来治疗复杂的感染.
研究的目的:
- 开发和评估一种用于非抗生素感染控制的新型核心纳米催化剂.
- 通过纳米催化剂研究生物膜分散和细菌清除的机制.
- 在临床前模型中评估纳米催化剂的安全性和有效性.
主要方法:
- 合成含化物,核心外ZnO2-纳米粒子/基于Ce的金属有机框架 (ZnO2@CeMOF/Br) 纳米催化剂.
- 在酸性pH下评估ZnO2核心降解,过氧化生成和低氧化酸形成.
- 评估纳米催化剂对黄金葡萄球菌生物膜,巨细胞极化和细胞毒性 in vitro 和 in vivo (糖尿病小鼠模型) 的影响.
主要成果:
- ZnO2@CeMOF/Br纳米催化剂通过过氧化和低酸生成有效地分散了黄金色菌生物膜.
- Ce节点催化了DNA水解,并调节了巨细胞的两极分化,使其成为一种M1-类表型,用于细菌清除.
- 在体内研究表明100%的存活率,快速恢复,减少细菌负载,感染糖尿病小鼠M1巨分化,没有观察到有效度的毒性.
结论:
- ZnO2@CeMOF/Br纳米催化剂代表了对抗细菌感染的有希望的非抗生素策略.
- 涉及生物膜分散和免疫调节的双重作用机制为感染控制提供了强大的方法.
- 这项技术显示出治疗伤口感染和预防抗生素耐药情景中的败血症的巨大潜力.
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