预测形状优化和响应pH的药物释放在Au-doped Fe3O4纳米载体中:针对向的治疗术的混合计算-实验方法
R A Harris1, P M Shumbula2, C Andraos3
1Department of Physics, University of the Free State, Nelson Mandela Avenue, Bloemfontein 9301, South Africa.
Medical engineering & physics
|February 5, 2026
概括
这项研究模拟了用于药物输送的六边形黄金合氧化铁纳米粒子. 这些稳定的纳米颗粒显示出有希望的5 - 甲的受控释放,特别是在较低的pH水平.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 计算化学计算化学
背景情况:
- 下一代的天文学家依赖于混合纳米系统.
- 在研究可以指导纳米粒子药物输送系统的设计.
研究的目的:
- 为了研究5-fluorouracil的稳定性,形状和药物释放率,将其加载到金的氧化铁纳米颗粒上.
- 引导实验人员设计高效的药物输送系统.
主要方法:
- 经典的原子学分子动力学模拟来确定纳米粒子的形状和稳定性.
- 结合能量的计算 (BE) 以确定最稳定的纳米粒子形状.
- 使用TEM,XRD,FTIR和VSM合成和表征金氧化铁纳米颗粒.
- 在不同的pH值下进行体外药物释放研究.
主要成果:
- 六边形黄金合的氧化铁纳米颗粒 (7 ± 2 nm) 被确定为最稳定的形状,每分子约 -1.1 eV的结合能.
- TEM证实了纳米粒子尺寸分布在1-12纳米之间.
- 药物释放研究显示,在pH值5.7的情况下,在48小时内释放84%的药物,而在pH值7.4的情况下则是41%.
结论:
- 六角形黄金合的氧化铁纳米颗粒是稳定的,适用于药物输送应用.
- 观察到的pH依赖释放特征表明有针对性药物输送的潜力.
- 计算机建模有效地预测纳米粒子特性,并指导实验合成.
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