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纳米颗粒的功能化,以与肠道细胞进行量身定制的相互作用,以及对细胞通透性的化学调制
Claudia Iriarte-Mesa1,2, Janice Bergen2,3,4, Kristina Danielyan1
1Department of Functional Materials and Catalysis, Faculty of Chemistry University of Vienna Währinger Str. 42 1090 Vienna Austria.
Small science
|April 11, 2025
概括
树突性半孔性二氧化纳米颗粒 (DMSNs) 的表面变化影响它们与肠道屏障的相互作用. 水友性和负电荷的DMSN更好地透粘液,而疏水性则受到阻碍,影响细胞吸收和屏障功能.
科学领域:
- 生物材料科学 生物材料科学
- 胃肠病学 胃肠病学
- 纳米技术 纳米技术
背景情况:
- 肠道屏障对口服药物输送提出了重大挑战.
- 了解纳米粒子与肠道细胞的相互作用对于设计有效的口服配方至关重要.
- 状半孔纳米粒子 (DMSNs) 为表面修饰提供了一个多功能平台.
研究的目的:
- 研究DMSN的表面功能化如何影响它们与肠粘液层和Caco-2/HT29-MTX-E12细胞模型的相互作用.
- 为了将表面化学,电荷和合体稳定性与纳米粒子透和细胞吸收途径相关联.
- 评估DMSN表面特性对肠道屏障完整性的影响.
主要方法:
- 球形DMSN的移植后功能化与聚乙烯糖醇,酸盐,甲基和法内索尔部分.
- 通过粘液层模型评估粒子透的情况.
- 使用Caco-2/HT29-MTX-E12共培养细胞模型对细胞内吸收途径的研究.
- 表面特性与粒子运动和细胞-细胞结合组织的相关性分析.
主要成果:
- 水友和负电荷的DMSN向肠道单层呈现增强的分布.
- 疏水性DMSN表现出通过粘液的阻碍运动,可能限制细胞接触.
- 混合DMSN表面促进了粘液扩散,并促进了准细胞透性.
- 细胞间距离的增加和紧密的结节重组表明了混合DMSNs的过渡性肠壁复发.
结论:
- DMSN的表面功能化显著调节它们在肠道环境中的行为.
- 优化的表面性能可以增强纳米粒子通过粘液的运输,并影响肠道屏障功能.
- 具有混合表面的DMSN显示出通过暂时影响屏障完整性来改善对细胞药物递送的潜力.
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