磁纳米载体与ICPTES-和GPTMS-功能化的四级基为pH响应的多克索鲁比释放
Sofia F Soares1, Ana L M Machado1, Beatriz S Cardoso1
1CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
Biomolecules
|January 28, 2026
概括
两种新的磁纳米载体被开发用于改善癌症化疗. 这些智能纳米载体在响应pH值时有效地加载和释放多克索鲁比辛 (DOX),显示出对癌细胞的增强细胞毒性.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 智能纳米载体对于提高癌症化疗的选择性和疗效至关重要.
- 四级酸盐 (HTCC) 是开发响应性药物输送系统的有前途材料.
研究的目的:
- 开发新的pH响应磁性纳米载体,以改善癌症化疗中的多克索鲁比 (DOX) 输送.
- 使用ICPTES或GPTMS将Fe3O4芯与HTCC和混合贝进行功能化.
主要方法:
- 通过与HTCC的功能化合成Fe3O4核心外纳米粒子 (MNP-HTCC1和MNP-HTCC2).
- 纳米粒子大小,泽塔潜力和体稳定性的表征.
- 多克索鲁比 (DOX) 负载效率,pH 取决于释放的研究,动力建模 (韦布尔) 和细胞毒性测定 (MCF-7 细胞).
主要成果:
- 纳米粒子在pH范围内表现出正的泽塔潜力和强大的体稳定性.
- 在pH值9.5.5下实现了高DOX负载效率 (90%) 和容量 (154μg/mg).
- 观察到pH取决于DOX的释放,在酸性pH (4.2-5.0) 时释放更快,模仿瘤微环境.
- 与免费DOX相比,装载DOX的纳米载体对MCF-7乳腺癌细胞表现出增强的细胞毒性,MNP-HTCC1显示出最高的疗效.
结论:
- 开发的基于HTCC的磁纳米载体对高效的多克索鲁比辛加载和pH触发的释放有效.
- 这些纳米载体显示出因细胞毒性改善而在癌症化疗中增强治疗性能的潜力.
- 这项研究强调了这些智能纳米载体对于有针对性的药物输送应用的承诺.
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