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主链氧贝他因聚合物修改成脂质体的隐身性评估

Mazaya Najmina¹, Shingo Kobayashi², Rena Shimazui³

¹Department of Applied Chemistry, Faculty of Engineering, Kyushu University, Motooka 819-0395, Japan.

|October 26, 2024

概括

基基基酸 (CB) 聚合物,当附着在脂质体上时,意外地导致小鼠的快速清除. 这表明,聚合物骨干结构,而不仅仅是表面特性,显著影响脂质体循环时间.

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
纳米技术纳米技术

背景情况:

烯胺聚合物与炭乙 (CB) 侧组是已知的隐形聚合物.
这些聚合物,当与蛋白质结合时,不会诱导抗体.
然而,当被修改到脂质体上时,它们矛盾地引起了抗体反应.

研究的目的:

为了研究抗体生产对聚合物骨干而不是CB侧组.
设计和合成一种新型聚合物,聚-酸-N-甲基-烯胺 (PAMPI),其主要链中含有CB.
为了评估小鼠中PAMPI修饰脂质体的血液保留.

主要方法:

聚乙酸-N-甲基-烯胺 (PAMPI) 的合成.
使用PAMPI修改脂质体.
在PAMPI修饰的脂质体上对血清蛋白质吸附的评估.
在小鼠中评估PAMPI修饰脂质体的血液保留.

主要成果:

经过PAMPI修饰的脂质体表现出与PCB和PEG修饰的脂质体相似的非污染性质.
与预期相反,PAMPI修饰的脂质体显示出从循环中快速清除 (注射后1小时以下).
这种清除率与未修改 (裸体) 脂质体的清除率相似.

结论:

聚合物修饰脂质体的血液保留不仅仅是由于它们对血清蛋白质吸附的抵抗性而可预测的.
脂质体构造和骨干结构在确定体内循环时间方面发挥着关键作用.
目前用于预测隐形行为的方法可能不足以用于新型聚合物架构.

关键词:

卡尔博克西贝他因 (Carboxybetaine) 是一种脂质体组是什么? 脂质体组是什么?没有污染的聚合物聚合物.这是一种zwitterionic聚合物.

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