奥利戈 ((乙烯基醇) 甲基烯酸盐共聚物修饰脂质体用于温度响应药物输送系统
Maria Isabel Martinez Espinoza1, Sezen Gül1, Luisa Mugnaini1
1Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Via Mancinelli 7, 20131 Milan, Italy.
Molecules (Basel, Switzerland)
|December 17, 2024
概括
热敏聚合物被整合到热敏脂质体 (TSLs) 中,以增强可控的药物释放. 虽然共聚合物结合略有降低了药物负载,但它提高了TSL的热响应性,优化了热触发的分娩.
科学领域:
- 生物材料科学 生物材料科学
- 聚合物化学 聚合物化学
- 药物输送系统 药物输送系统
背景情况:
- 热敏脂质体 (TSL) 是有希望的可控药物释放,但需要精确的热触发器.
- 热敏聚合物为先进的生物医学应用提供可调节的热行为.
- 将聚合物整合到TSL中可以修改它们的物理化学特性和释放动力学.
研究的目的:
- 为了合成热敏共聚合物,Chol-P ((MEO2MA-co-OEGMA),用于TSL应用.
- 将合成的共聚合物纳入各种TSL配方中.
- 评估共聚合物整合对TSL特征和热敏药物释放的影响.
主要方法:
- 使用原子转移基聚合物 (ATRP) 合成热敏共聚合物.
- 合聚合物的纳入由各种脂质 (DPPC,Lyso-PC,HSPC,DSPC) 组成的脂质体.
- 使用动态光散射和光光谱学对脂质体的物理化学性质 (大小,PDI,LE,EE) 的表征.
- 药物释放特征的评估,包括分子量对负载效率的影响.
主要成果:
- 同聚合物表现出较低的临界溶液温度 (LCST) 为37°C,适用于热触发.
- 配合聚合物的加入稍微改变了脂质体的大小,并且总体上降低了负载效率 (LE) 和封装效率 (EE).
- 基于HSPC的TSL在共聚合物修改后显示出增强的热敏性,尽管负载能力降低.
- 莱索-PC配方显示较低的LE和EE,可能是由于净化过程中的不稳定性.
结论:
- 热敏共聚合物可以成功地纳入TSL.
- 同聚合物修饰可以提高TSL的热响应能力,特别是在HSPC配方中.
- 这一策略有可能优化有针对性的,热触发的药物输送系统.
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