封装策略很重要:大分子的前后加载到通过瓦特里特模板形成的表面支的微凝中
Deniya Joseph1, Harrison Brown1, Emmanuelle A B Konzi1
1School of Science and Technology, Department of Chemistry and Forensics, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, United Kingdom.
ACS materials Au
|November 17, 2025
概括
预先将大分子加载到碳酸瓦特里特晶体中,是一种有效的方法,用于制造表面支 (ss) 微凝. 这种方法优化了对潜在的治疗应用的宏分子封装.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 纳米技术 纳米技术
背景情况:
- 碳酸水晶越来越多地被用作聚合物微凝制造的牺牲模板.
- 瓦特利特的特性,包括其多孔结构,生物相容性和可持续合成,使其适合生物医学用途.
研究的目的:
- 研究和比较大分子封装在表面支持 (ss) 微凝的预加载和后加载策略.
- 阐明德克斯及其衍生物在ss-vaterite上的吸附机制.
- 评估这些ss-microgels对受控治疗输送的潜力.
主要方法:
- 表面支的 (ss) 微凝是通过涂覆瓦特里特晶体与交替的藻酸盐 (ALG) 和聚-l-氨酸 (PLL) 层制成的,然后进行核心溶解.
- 大分子 (德克斯和带电衍生物) 在瓦特里特合成 (预加载) 或在微凝形成 (后加载) 后被加载.
- 用朗格穆尔和弗朗德利希模型分析了吸附等温体,以了解封装机制.
主要成果:
- 预加载实现显著更高的封装效率 (高达9% w/w) 与后加载 (低于1% w/w) 相比.
- 德克斯吸附遵循兰格穆尔模型,而其衍生品遵循弗洛因利希模型,表明分子间排斥.
- 微凝在酸性条件下表现出稳定性,而素介导的PLL降解使得持续释放的德克斯成为可能.
结论:
- 装载策略极大地影响了大分子封装效率在瓦特里特模板ss-microgels.
- 了解吸附机制是优化特定应用的微凝设计的关键.
- 这些SS-微凝显示出控制释放应用的前景,特别是在治疗中.
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