双响应的氏丁硫酸盐自组装纳米颗粒用于转移性癌细胞的组合治疗
Ensieh Poursani1, Giuseppe Cirillo2, Manuela Curcio2
1Children's Cancer Institute, Lowy Cancer Research Centre, University of New South Wales, Randwick, NSW 2052, Australia.
International journal of pharmaceutics: X
|March 15, 2024
概括
本研究介绍了用于向药物输送的自组装纳米粒子. 这些纳米粒子在癌细胞中选择性地释放ambucil和doxorubicin,增强它们的细胞毒性作用.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 药物输送系统 药物输送系统
背景情况:
- 开发有针对性的药物输送系统对于提高癌症治疗疗效至关重要.
- 利用细胞信号,如酶和氧化还原潜能,为触发药物释放提供了一条途径.
- 丁硫酸盐衍生物为创建功能纳米粒子提供了一个有前途的平台.
研究的目的:
- 开发自组装纳米粒子 (LCPs),用于触发ambucil (Chl) 和doxorubicin (DOX) 的释放.
- 利用酶和氧化还原信号来选择性地将药物输送到MDA-MB-231癌细胞.
- 评估药物装载纳米粒子增强的细胞毒性活性.
主要方法:
- 通过与脂酸和ambucil相结合的氏素硫酸衍生物的自我组装来制备LCP.
- 使用FT-IR,1H NMR和临界聚合度的确定进行物理化学表征.
- 在生理条件下的体外药物释放研究 (pH 7.4,酶,GSH) 和细胞活力测定.
主要成果:
- 成功制备了45nm水力动力直径和-44mV泽塔电位的球形纳米粒子.
- 观察到选择性释放的Chl (41%在癌细胞和0%在正常细胞) 和DOX (60%在癌细胞和35%在健康细胞).
- 该纳米系统显示了对癌细胞的增强细胞毒性活性.
结论:
- 开发的自组装纳米粒子有效地以有针对性的方式传递氨酸和多克索鲁比.
- 酶和氧化还原反应释放机制使选择性药物输送到癌细胞成为可能.
- 通过增强药物细胞毒性,LCP显示了提高化疗疗效的潜力.
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