对不同用于大脑输送的脂质纳米系统的吸收和内化途径的比较研究
Ljubica Mihailova1, Dushko Shalabalija1, Andreas Zimmer2
1Institute of Pharmaceutical Technology, Faculty of Pharmacy, Ss. Cyril and Methodius University in Skopje, Majka Tereza 47, 1000 Skopje, North Macedonia.
Pharmaceutics
|August 26, 2023
概括
脂质纳米系统,包括纳米脂质体和纳米结构脂质载体,显示出跨越血脑屏障的药物输送的前景. 这些系统在体外证明了有效的细胞吸收和稳定性.
科学领域:
- 纳米技术纳米技术
- 生物医学工程 生物医学工程
- 药理学 药理学是指药理学的学科.
背景情况:
- 为中枢神经系统开发有效的药物输送系统是具有挑战性的,因为血脑屏障.
- 基于脂质的纳米颗粒具有跨越生物障碍和准神经细胞的潜力.
研究的目的:
- 为潜在的血脑屏障和神经元传递准备和描述纳米脂质体和纳米结构脂质载体.
- 评估这些纳米系统的体外相互作用,稳定性和细胞吸收.
主要方法:
- 纳米脂质体和纳米结构脂质载体的制备和表征 (大小,PDI,Z-潜力).
- 在生理介质和人体血中的体外稳定性研究.
- 使用hCMEC/D3和SH-SY5Y细胞系进行蛋白质吸附研究和细胞毒性测定.
- 在hCMEC/D3和SH-SY5Y细胞中进行细胞吸收研究.
主要成果:
- 纳米系统表现出合适的粒子大小 (~105-120纳米),单模分布 (PDI<0.3) 和负Z电位 (-24.30到-31.20mV).
- 纳米脂质体和纳米结构脂质载体在生理条件下表现出良好的稳定性,尽管波洛克萨默涂层的纳米脂质体的颗粒大小增加了.
- 隐形聚合物降低了蛋白质吸附;纳米脂质体显示出低细胞毒性,而高度的纳米结构脂质载体降低了细胞活力.
- 通过hCMEC/D3和SH-SY5Y细胞成功吸收所有纳米系统,可能是通过依赖ATP的内化和被动扩散.
结论:
- 准备好的纳米脂质体和纳米结构脂质载体是稳定的,并通过血液-大脑屏障和神经元模型在体外有效地内化.
- 这些脂质纳米系统显示出作为药物输送载体的潜力,以准中枢神经系统.
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