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通过粗粒度模拟揭示的聚合物产药纳米粒子的超分子组织

Ping Gao^1,2, Julien Nicolas², Tâp Ha-Duong¹

¹Université Paris-Saclay, CNRS, BioCIS, Châtenay-Malabry 92290, France.

Journal of the American Chemical Society

|October 13, 2021

概括

分子动力学模拟显示,自组装纳米颗粒中的药物链接器可访问性限制了药物释放效率. 这项研究指导了增强药物输送的聚合物前药物纳米颗粒的设计.

科学领域:

生物材料科学
计算化学
纳米技术

背景情况:

药物聚合物可自组合成纳米粒子,以提高药物的生物可用性和可控释放.
这些纳米颗粒的有效药物释放对于显著的抗癌活性至关重要,但由于链接器的可访问性而受到限制.

研究的目的:

通过分子动力学模拟来研究药物聚合物的自我组装和超分子组织.
了解影响自组装纳米颗粒药物释放效率的因素.

主要方法:

对四种代表性药物聚合物进行了粗粒度分子动力学模拟.
结合剂包括凝胺或帕克利塔塞尔,酸盐或滴糖酸连接剂和多链.

主要成果:

模拟提供了纳米粒子内的药物,链接器和聚合物的空间组织的见解.
发现连接器对溶剂的接触是有限的,一些裂解部位水分不足或部分溶解.
这些发现表明,短或不足的化剂可以阻碍药物释放.

结论:

自组装纳米颗粒中的药物聚合物连接剂的有限溶剂可访问性可能会阻碍药物释放效率.
这项理论研究为设计具有优化链接特性的新型聚合物原药纳米粒子提供了指导,以改善治疗结果.

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