工程叶酸修饰的纳米粒子来增强莱特醇的抗癌作用
Neda Rostami1, Abuzar Nikzad2, Shervin Shaybani3
1Department of Chemical Engineering, Arak University, Arak, 3848177584, Iran.
Macromolecular bioscience
|April 18, 2025
概括
装载着莱特醇 (LTZ) 和用叶酸 (FA) 功能化的可生物降解纳米颗粒显示为乳腺癌治疗的增强向传递和受控释放,促进细胞亡和抑制侵袭.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 癌症治疗 癌症治疗
背景情况:
- 有针对性的药物输送系统对于提高抗癌疗效和尽量减少全身毒性至关重要.
- 可生物降解的纳米颗粒为癌症治疗中可控药物释放提供了一个有希望的平台.
- 叶酸功能化可以改善向过度表达叶酸受体的癌细胞.
研究的目的:
- 开发和表征叶酸功能化,可生物降解的纳米颗粒 (LTZ-FNPs) 用于乳腺癌治疗中向输送莱特醇 (LTZ).
- 为了评估从纳米颗粒中对pH敏感的,受控的LTZ释放.
- 评估LTZ-FNP在体外对激素受体阳性乳腺癌细胞的疗效.
主要方法:
- 合成带有莱特醇 (LTZ-NPs) 的多聚-烯基醇 (PCL-co-PEG) 纳米颗粒.
- 叶酸 (FA) 与LTZ-NP的结合,形成LTZ-FNP.
- 在不同的pH条件下,纳米粒子形态,尺寸,药物捕获效率和体外释放动力学的表征.
- 使用MCF-7细胞进行细胞毒性测定和分析与亡相关的基因表达 (Bcl2,Casp8) 和细胞周期进展.
主要成果:
- 球形纳米粒子 (60-90nm) 已成功制造,在LTZ-FNPs中增强药物捕获和控制释放.
- LTZ的释放取决于pH值,在酸性环境中增加,与Korsmeyer-Peppas模型一致.
- LTZ-FNPs对MCF-7细胞具有较高的细胞毒性,诱导了亡,促进了SubG1的细胞循环停止,增加了p53表达,并降低了MMP-9,抑制了细胞入侵.
结论:
- 具有FA功能,对pH敏感的可生物降解纳米颗粒提供了一个有效的系统,以有针对性和可控地输送莱特醇.
- 这种纳米输送方法通过促进细胞灭绝和抑制侵袭来增强抗癌效应,有可能减少乳腺癌治疗中的全身毒性.
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