结合化学显著影响目标纳米颗粒的毒性和生物分布,通过补充激活介导
Michael H Zaleski1, Liam S Chase1, Elizabeth D Hood1
1Department of Systems Pharmacology and Translational Therapeutics, The Perelman School of Medicine, University of Pennsylvania, 421 Curie Blvd., 354 BRB II/III, Philadelphia, PA, 19104, USA.
Advanced materials (Deerfield Beach, Fla.)
|December 12, 2024
概括
药物输送纳米粒子可以激活补充系统,导致毒性和改变生物分布. 研究人员确定了特定的结合化学机制,并设计了解决方案,以减轻这些不良影响,以实现更安全的纳米医学.
科学领域:
- 纳米医学是一种纳米医学.
- 免疫学 免疫学 免疫学
- 生物结合化学 生物结合化学
背景情况:
- 结合化学对于开发先进的药物递送系统至关重要,包括抗体-药物结合物和向纳米粒子.
- mRNA疫苗的成功凸显了基于纳米粒子的治疗方法的潜力.
研究的目的:
- 为了研究常见的结合化学对抗体向纳米颗粒的补充级联的影响.
- 阐明这些化学物质激活互补并引起毒性的机制.
- 为减轻补充激活和提高纳米粒子安全性设计解决方案.
主要方法:
- 使用针对抗体的纳米颗粒和各种结合化学物质 (例如,二子环looctyne, thiol-maleimide).
- 通过血蛋白相互作用和纳米粒子生物分布研究评估补充激活.
- 分析了纳米粒子-蛋白质聚合,并确定了负责补充激活的特定化学相互作用.
主要成果:
- 流行的联结化学物质直接激活补充级联,导致纳米粒子生物分布的显著变化 (例如,肺细胞吸收增加了140倍).
- 观察到的毒性包括血小板数量大幅下降 (50%).
- 机制各不相同:二环环氧氨基因导致纳米颗粒上的抗体聚合,而醇-马莱胺则通过白蛋白结合和聚类激活补充物.
结论:
- 结合化学,虽然对纳米医学至关重要,但不是惰性的,可以触发免疫反应.
- 了解不同化学物质的补充激活的特定机制对于设计更安全的纳米粒子至关重要.
- 基于机械洞察力的工程解决方案可以减少补体激活,为改进的纳米医药开发铺平道路.
相关概念视频
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