聚合物混合物控制纳米颗粒的表面电荷,改善粘液透和上皮细胞粘附
Corey A Stevens1,2, Boris Sevarika1,3,4, Brian K Wilson5
1Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.
Nano letters
|November 21, 2025
概括
研究人员开发了新的避开粘液但粘在细胞上的纳米粒子 (MECS NPs),以改善药物输送. 这些纳米颗粒有效地穿透粘液屏障,并增强与上皮细胞的结合,以获得更好的治疗方法.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 药物运输 药物运输 药物运输
背景情况:
- 粘液对纳米粒子 (NP) 通过上皮表面传递药物构成重大障碍.
- 粘液捕获纳米粒子,阻碍它们进入目标细胞并限制治疗效果.
研究的目的:
- 为增强粘膜药物递送而设计逃避粘液但仍具有细胞粘性 (MECS) 的纳米颗粒.
- 在纳米粒子设计中克服粘液透和细胞粘附之间的固有权衡.
主要方法:
- 使用闪光纳米沉开发了100纳米MECS纳米粒子.
- 在中性聚乙烯糖醇 (PEG) 冠状体中纳入聚化聚二甲基甲基酸 (PDMAMA).
- 使用体外细胞培养和肠上芯片器官模型评估纳米粒子性能.
主要成果:
- MECS纳米颗粒显示出有效的粘液透,与纯PEGylated对照进行比较.
- 与对照组相比,MECS纳米粒子与上皮细胞的结合率增加了45倍.
- 粘液逃逸和细胞粘附的双重功能在细胞培养和有机体中得到证实.
结论:
- 开发的MECS纳米颗粒为改善穿越粘膜壁垒的药物输送提供了一种多功能战略.
- 这种方法成功地解决了平衡粘膜扩散和细胞吸收的挑战,以提高治疗效果.
- 对于有针对性的药物输送应用来说,MECS纳米颗粒在克服生物障碍方面是一个有希望的进步.
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