印度化物量子点的PEGylation可以防止量子点介导的血小板激活
Leigh Naylor-Adamson1, Thomas W Price2, Zoe Booth1
1Biomedical Institute for Multimorbidity, Hull York Medical School, University of Hull, Hull, HU6 7RX, UK. simon.calaminus@hyms.ac.uk.
Journal of materials chemistry. B
|December 5, 2024
概括
印度/硫化量子点 (InP/ZnS QDs) 的PEGylation显著降低了血小板激活. 这种表面修改增强了INP/ZnS QDs在生物医学应用中的生物相容性.
科学领域:
- 纳米技术纳米技术
- 生物医学工程 生物医学工程
- 血液学 血液学 血液学
背景情况:
- 量子点 (QD) 在生物医学成像和药物输送方面表现有前途.
- 化/硫化 (InP/ZnS) QD 是比重金属QD更具生物相容性的替代品.
- 纳米材料的血小板激活可能导致病理性血栓形成.
研究的目的:
- 调查PEGylation对InP/ZnS QDs对血小板激活的影响.
- 在体外评估PEGylated InP/ZnS QD与血小板的相互作用.
- 确定PEGylated InP/ZnS QDs在安全的生物医学应用中的潜力.
主要方法:
- 用脂酸 (QD-LA) 或青胺 (QD-Pen) 配体合成和PEGylation的InP/ZnS QDs.
- 评估血小板聚合,QD-血小板相互作用,整合素激活和洗过的血小板中的α颗粒分泌.
- 在全血中形成的血栓内评估QD局部化.
主要成果:
- 与非PEGylated QDs相比,PEGylated InP/ZnS QDs诱导的血小板聚合,相互作用,整合素激活和α颗粒分泌显著减少.
- 在洗净的血小板中,PEGylation恢复了血小板的扩散.
- 在全血中,PEGylation降低了体内的QD积累,最大限度地降低了功能障碍性血栓形成的风险.
结论:
- QD PEGylation对于减轻QD介导的血小板激活至关重要.
- PEGylated InP/ZnS QDs,特别是具有生物相容涂层的,显示血小板活化减少.
- 这项研究支持PEGylated InP/ZnS QDs作为药物输送和成像的更安全剂的开发.
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