在OEGylated超分子聚合物中平衡化学和超分子稳定性
Weijie Zhang1, Feihu Wang1, Han Wang1
1Department of Chemical and Biomolecular Engineering and Institute for NanoBioTechnology, The Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States.
甲基乙烯糖醇 (OEG) 修改了坎普托丁 (CPT) 产生了具有增强抗癌功能的自我组装超分子聚合物 (SP). 在结肠癌模型中,从具有特定链接剂的SP中释放CPT的速度提高了瘤抑制和存活率.
科学领域:
- 聚合物化学
- 超分子化学
- 药物输送系统
背景情况:
- 聚乙烯糖醇 (PEG) 化增强了药物特性,但超分子方法提供了新的可能性.
- 抗癌药物如坎普托西因 (CPT) 需要改进的输送系统.
- 改造药物自组装成纳米结构可以改善治疗结果.
研究的目的:
- 使用基乙烯糖醇 (OEG) 开发CPT的新型高分子前药物 (SPD).
- 研究链接器化学稳定性对CPT释放动力学和SPD性能的影响.
- 评估基于OEGylated CPT的SPs在体外和体内抗瘤功效.
主要方法:
- 用各种可生物降解链接剂 (例如,etcSS,buSS) 合成OEG化CPT前药物.
- 自组装超分子聚合物 (SP) 形态和药物释放配置文件的特征.
- 在结肠癌模型中进行的体外细胞毒性测定和体内研究,比较SPs与irinotekan.
主要成果:
- 具有OEG表面涂层的自发形成的管状SP.
- 与buSS链接剂相比,具有更快释放的etcSS链接剂的SP显示出更高的功效和抗瘤功效.
- 图布斯特干 (TT) 1E和TT 7E SPs在体内显示出瘤生长抑制的增强和延长的存活时间.
结论:
- 超分子OEGylation是一个可行的策略来设计基于药物的先进SP.
- 控制化学链接器的稳定性对于优化药物释放和治疗效果至关重要.
- 开发的SP具有显著的前景, 作为强大的抗癌疗法,
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