聚糖醇外降解敏感的聚合体对DM1传递到HER-2-阳性乳腺癌
Guoxin Ma1, Daniel Braatz1, Peng Tang1
1Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, Berlin 14195, Germany.
Biomacromolecules
|June 22, 2024
概括
研究人员开发了一个有针对性的药物递送系统,使用载有抗癌药物的聚合体,并与trastuzumab相关联. 这个系统有效地向HER-2-阳性癌细胞,显示出显著的瘤减少和改善癌症治疗的潜力.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 在瘤学瘤学.
背景情况:
- 超分子输送系统提供了长时间的循环和功能化潜力,毒性最小.
- 针对性的输送系统对于提高治疗疗效和减少癌症治疗副作用至关重要.
研究的目的:
- 构建和评估一种针对HER-2-阳性癌症的新型超分子药物递送系统.
- 评估目标纳米载体的稳定性,药物释放动力学和体外/体内疗效.
主要方法:
- 用trastuzumab (抗HER-2抗体) 功能化的线性多糖醇外聚合体的构造.
- 通过动态二硫化物结合,对抗癌药物DM1进行共价负荷.
- 尺寸的特征,药物加载效率,稳定性和在减少条件下药物释放.
- 在HER-2-阳性癌症模型中评估细胞吸收,细胞毒性 (IC50) 和瘤生长抑制.
主要成果:
- 特拉斯图祖马布-聚合体-DM1 (Tra-PS-DM1) 系统的平均尺寸为95.3nm,药物加载效率为99.3%.
- 在减少条件下,Tra-PS-DM1表现出卓越的稳定性和受控的DM1释放.
- 显著增强细胞吸收,并在HER-2-阳性癌细胞中降低了多达17倍的IC50.
- 证明了HER-2-阳性瘤细胞生长的实质性抑制,BT474瘤细胞在12小时后缩小了62%.
结论:
- 开发的多糖醇外的,装载着DM1 (Tra-PS-DM1) 的trastuzumab结合的聚合体,代表了一个稳定有效的向药物递送系统.
- 该系统显示出治疗HER-2-阳性瘤的巨大潜力,因为其增强了细胞吸收,有针对性的输送和强大的抗癌活性.
- 这些发现强调了PG外的Tra-PS-DM1作为HER-2-阳性癌症治疗的有吸引力的纳米医学方法的前景.
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