带有抗微生物的半孔纳米颗粒:pH触发的对生物膜的控制释放
Mirena Sakaj1, Vincenzo Lombardi1, Isabella Caligiuri2
1Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172 Mestre, Italy.
ACS omega
|December 22, 2025
概括
半孔性二氧化纳米颗粒提供抗菌 (AMP) 来对抗耐药细菌. 这种响应pH的系统增强了AMP的稳定性,并向金黄色葡萄球菌生物膜,提供了一个有前途的治疗策略.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 抗菌研究 抗菌研究
背景情况:
- 耐多药细菌构成了重大威胁,推动了对新疗法的研究.
- 抗微生物 (AMP) 是有前途的,但在稳定性和降解方面面临挑战.
- 开发有效的交付系统对于AMP临床翻译至关重要.
研究的目的:
- 开发一种适应pH值的抗微生物 (AMP) 的介质性二氧化纳米粒子 (MSN) 传递系统.
- 为了增强稳定性,并使衍生型瘤素B和子衍生型BmKn2针对金黄色葡萄球菌生物膜的有针对性输送.
- 调查AMP载体MSN的受控释放和有效性,以对抗耐药细菌感染.
主要方法:
- 通过静电相互作用将AMP (temporin B,BmKn2) 封装到MSN中.
- 在不同pH水平 (7.4和5.5) 上,对的负载能力和释放动力学的表征.
- 在体外评估AMP载体的MSN对抗 Staphylococcus aureus 的抗菌和抗菌膜活性.
主要成果:
- 在MSN上实现了AMP的高负载能力.
- 观察到可调节释放,pH值为7.4时释放最小,pH值为5.5时加速释放.
- 载有AMP的MSN表现出与自由的抗菌和抗菌膜疗效相似的抗菌和抗菌膜疗效,稳定性提高.
结论:
- 响应pH的MSN为AMP提供了一个稳定有效的平台.
- 该系统在酸性条件下促进了针对性地根除金黄色葡萄球菌生物膜.
- 该MSN平台显示了在对抗耐药性细菌感染方面更广泛应用的潜力.
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