长循环脂肪体平台使用基于水友性聚合物的表面修饰:制备,表征和生物评估
Jaroslav Turánek1, Petr Kosztyu2, Pavlína Turánek Knötigová3
1ICRC International Clinical Research Center, St. Anne's University Hospital Brno, Czech Republic; Department of Immunology, Faculty of Medicine and Dentistry, Palacký University Olomouc, Olomouc, Czech Republic; Charles University Prague, Univ. Hosp. Hradec Králové, Inst. Clin. Immunol. & Allergol., Hradec Králové 50005, Czech Republic.
International journal of pharmaceutics
|July 14, 2024
概括
基于N-(2-基) 甲基胺 (HPMA) 的共聚合物为脂质体表面修饰提供了比聚乙烯糖醇 (PEG) 更安全的替代品. 这些HPMA修饰的脂质体显示出长期改善的血液循环和降低的免疫反应,增强了它们作为先进药物递送平台的潜力.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 药物运输 药物运输 药物运输
背景情况:
- 脂质体是临床环境中使用的关键药物输送载体.
- 聚乙烯甘醇 (PEG) 通常用于赋予脂质体隐形性质.
- 需要改进的表面修饰剂来提高脂质细胞的性能和安全性.
研究的目的:
- 评估基于N-(2-基) 甲基胺 (HPMA) 的共聚物作为脂质体的表面修饰剂.
- 为了比较HPMA修饰脂质体与传统PEG化脂质体的性能.
- 评估HPMA修饰脂质体的生物相容性和体内循环特征.
主要方法:
- 使用脂膜水化和通过100nm聚碳酸过器挤出,制备了脂质体.
- 使用基于HPMA的共聚合物与胆固醇杆实现了表面修饰.
- 描述涉及传输电子显微镜,原子力显微镜和梯度超离心.
- 在子身上进行了体内循环研究,使用光标记的脂质体.
主要成果:
- 通过基于HPMA的共聚合物证实了脂质体的高效表面修饰.
- 与PEGylated脂质体相比,HPMA修饰的脂质体在体内表现出延长的循环.
- 用HPMA修饰的脂质体没有诱导特定抗体的形成或补体的激活.
- 重复服用HPMA修饰脂质体显示出比PEGylated对应物更优越的长循环效应.
结论:
- 基于HPMA的共聚物是脂质体的有效和安全的表面修饰剂.
- 用HPMA修饰的脂质体代表了用于药物输送的PEGylated脂质体的有希望的替代品.
- 这些新型脂肪体平台为治疗应用提供了更高的安全性和更好的长期循环.
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