吸收NIR的有机电荷转移复合物用于光热抗菌疗法和伤口愈合
Peirong Bai1, Qiong Zhang2, Xiaoyu Zhang3
1Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Third Hospital of Shanxi Medical University, Tongji Shanxi Hospital, Taiyuan, 030032, China.
Materials today. Bio
|November 10, 2025
概括
新的超分子纳米颗粒提供了一种非抗生素方法来对抗细菌感染并促进伤口愈合. 这些光热剂有效杀死细菌,并通过近红外光加速组织再生.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 照相医疗 (photomedicine) 是一种医学.
背景情况:
- 细菌感染阻碍了伤口愈合,而抗菌素耐药性则加剧了这种情况.
- 光热疗法 (PTT) 是一种非抗生素策略,用于根除病原体.
- 开发高效,生物相容的光热剂仍然是一个挑战.
研究的目的:
- 开发用于PTT的新型超分子组装的供体-受体电荷转移复合体 (CTC) 纳米粒子.
- 设计具有增强近红外 (NIR) 吸收和高光热转换效率的纳米粒子.
- 评估这些纳米颗粒对抗细菌感染和促进伤口修复的有效性.
主要方法:
- 通过捐赠-接受分子的超分子组合合成TPD-TCB (TT) 纳米粒子.
- 具有特征的TT NP用于能源级工程,NIR吸收 (高达1200 nm) 和光热转换效率 (38%).
- 在体外和体内活体伤口模型中评估了对格拉姆阳性和格拉姆阴性细菌的抗菌活性.
主要成果:
- TT NPs显示了广泛的NIR吸收和高光热转换效率.
- 在808nm辐射下,在体外实现了显著的细菌杀死 (90.7%的格拉姆阳性,94.9%的格拉姆阴性).
- 在体内研究显示,伤口关闭加速,病原体清除,减少炎症,增强组织再生.
结论:
- 基于CTC的带隙工程为高性能有机光热剂提供了可行的策略.
- TTNP对细菌感染有效,并通过PTT促进伤口愈合.
- 这种方法为治疗伤口的抗生素提供了一个有希望的替代方案.
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