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具有高正电荷和生物相容性的四度氨碳点:一种有效的纳米抗菌剂,可加速细菌感染的伤口愈合

Jinrui Hou¹, Shiji Liu¹, Xinyue Wu¹

¹Anhui Key Laboratory of Chemo-Biosensing, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China.

ACS applied bio materials

|October 29, 2025

概括

研究人员开发了新型添加碳点 (N-CDs),以克服传统四级化合物 (QACs) 的局限性. 这些N-CD为治疗伤口和医疗器械提供了增强的抗菌活性和生物相容性.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
生物医学工程生物医学工程

背景情况:

传统的四级化合物 (QAC) 面临挑战,包括环境敏感性,耐药性发展和生物相容性差.
需要先进的抗菌剂,具有更好的安全性和有效性.

研究的目的:

开发新的添加碳点 (N-CDs),作为传统QAC的替代品.
研究合成的N-CDs的抗菌机制和生物相容性.
在临床前的伤口愈合模型中评估N-CDs的疗效.

主要方法:

绿色干热合成N-CDs使用2,3-epoxypropyltrimethylammonium化物.
描述N-CD的结构,正表面电荷和ROS生成.
在体外生物相容性评估 (血液溶解,细胞活力).
在感染 Staphylococcus aureus 的小鼠伤口模型中的体内评估.

主要成果:

合成的N-CD与保留的四级基一起,通过膜破坏和ROS诱导表现出双重杀菌机制.
通过低血解率 (<5%) 和高细胞活力 (>80%) 证明了出色的生物相容性.
在体内研究显示,伤口快速关闭,有组织的原沉积,没有全身毒性或炎症的迹象.

结论:

N-CDs是一个有希望的纳米材料解决方案,克服了QAC的局限性,用于对抗耐药性细菌感染.
开发的N-CD显示了在伤口愈合生物材料和医疗植入物抗菌涂层中的应用潜力.

关键词:

抗微生物耐药性抗微生物耐药性细菌感染细菌感染碳点是指碳点的部分.四级氨化合物四级氨化合物伤口愈合伤口愈合

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