用多电解质多层涂层进行自由溶液毛细体电泳,以树突接种聚合物 (L-氨酸) 的尺寸为基础的表征
Sébastien Roca1, Laurent Leclercq1, Hervé Cottet1
1IBMM, University of Montpellier, CNRS, ENSCM, Montpellier, France.
Journal of chromatography. A
|February 10, 2024
概括
这项研究开发了毛细管电泳,以分离树突移植的多 (L-lysine) 代. 优化的涂层提高了分辨率,使得可用于药物输送应用的摩尔质量和移动性表征.
科学领域:
- 聚合物化学 聚合物化学
- 分析化学 分析化学
- 生物材料科学 生物材料科学
背景情况:
- 登德里格拉夫特聚L-氨酸 (DGL) 显示出作为一种生物相容的药物输送载体的前景.
- 鉴定DGL代的特征是困难的,因为在摩尔质量和分支的异质性.
研究的目的:
- 为第一个三代DGL开发选择性分离方法.
- 为了优化自由溶液毛细管电泳 (CE) 条件,以提高代际分辨率.
- 为了确定DGL的分子质量和电泳运动性,多分散性.
主要方法:
- 自由溶液毛细电泳 (CE) 用于DGL分离.
- 内毛细管壁被涂上离子聚合物层,以最大限度地减少溶液吸附.
- 使用PEGylated聚化涂层来控制电流 (EOF).
主要成果:
- 优化的CE条件实现了DGL代之间的高分辨率.
- 特定的PEGylation (1kDa mPEG,低接种密度) 有效调整了EOF.
- 在DGL世代中成功确定了分子质量和有效电泳运动的多分散性.
结论:
- 自由溶液CE是一种可行的方法来表征DGL异质性.
- 表面修饰策略对于成功的复杂聚合物的CE分离至关重要.
- 这项工作推进了用于药物输送的树突聚合物的分析特征.
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