基于转移的核磁共振揭示了蛋白质聚合物和蛋白质纳米粒子结合行为的独特机制
Jeffrey Watchorn1, Samantha Stuart2, Aaron J Clasky1
1Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario, M5S 3E5, Canada. f.gu@utoronto.ca.
Journal of materials chemistry. B
|October 12, 2023
概括
与溶液中的聚合物相比,聚合物涂层的纳米颗粒显示出素结合的改变. 纳米粒子核心影响结合,而大小则不影响,为优化药物输送系统提供了洞察力.
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:
- 纳米颗粒药物递送系统提高了活性药物成分 (API) 的有效性,并允许替代的注射途径.
- 粘膜粘合和粘膜透是通过粘膜表面增强API吸收的关键策略.
- 与相同的纳米粒子材料观察到矛盾的粘粘性行为,需要更深入的机械学理解.
研究的目的:
- 研究纳米粒子-蛋白质相互作用,特别是聚合物涂层纳米粒子与粘素的结合行为.
- 利用聚合物-蛋白质结合系统的机械见解来理解纳米粒子-素相互作用.
- 探索聚合物形状和纳米粒子特征如何影响粘膜粘合.
主要方法:
- 利用核磁共振 (NMR) 技术,包括NOE转移,研究聚合物-蛋白质结合.
- 评估了各种聚合物涂层纳米粒子和状聚合物纳米粒子与粘素蛋白的结合.
- 分析了纳米粒子组成,聚合物结合和大小对粘素结合的影响.
主要成果:
- 当聚合物与纳米粒子表面相结合时,与它们的溶液状态相比,聚合物与素的结合行为显著不同.
- 聚乙烯罗立表明,在纳米颗粒表面内置时,可以从惰性转换到结合的可切换行为.
- 纳米粒子核心组成被发现对确定聚合物结合命运有影响,而纳米粒子大小 (60-270 nm) 显示没有明确的相关性.
结论:
- 同样的聚合物可能会由于纳米粒子表面结合引起的形状变化而表现出对粘素的改变结合亲和力.
- 这些发现凸显了纳米粒子配方在决定聚合物-素相互作用中的关键作用.
- 源自NMR的见解可以指导纳米粒子配方的优化,以提高药物递送中的聚合物介导粘合力.
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