PEGylated聚合物大尺度纳米颗粒的内细胞体依赖于动氨酸和巨细胞体
bioRxiv : the preprint server for biology
|February 6, 2026
概括
聚合物中等尺度纳米粒子 (MNPs) 在冷解和冷藏条件下表现出良好的稳定性. 用染料装载的MNP在室温和37°C下较长时间保持稳定,通过依赖于胺的途径吸收.
科学领域:
- 纳米医学是一种纳米医学.
- 生物材料科学 生物材料科学
- 细胞生物学 细胞生物学
背景情况:
- 纳米技术为药物输送和细胞内运输提供了先进的平台.
- 聚合物中等尺度纳米粒子 (MNPs) 是300-500nm,PEGylated,并准脏管状上皮细胞.
- 了解MNP的物理化学稳定性和细胞吸收对于治疗应用至关重要.
研究的目的:
- 研究在各种压力条件下MNP的物理化学稳定性.
- 阐明MNP在细胞中的细胞内化机制.
主要方法:
- 经过冷解周期和不同的储存条件 (温度,持续时间) 的MNP.
- 测量了颗粒大小和多分散度指数 (PDI) 以评估稳定性.
- 在体外细胞吸收研究中,使用786-O细胞和内细胞形成途径的药理抑制剂进行了细胞吸收研究.
主要成果:
- 在最多4个结解周期后,MNP在尺寸和PDI中表现出微不足道的变化.
- 空的MNP和装有染料的MNP都在-20°C稳定.
- 装有染料的MNP在室温和37°C下至少保持了8天的稳定性,与空的MNP不同.
- MNP吸收主要通过依赖激素的途径进行介导,其中部分涉及巨细胞.
结论:
- 在常见的储存和处理条件下,MNP表现出强大的稳定性.
- 半球尺寸范围的MNP利用特定的内细胞通路进行细胞内化.
- 这些发现对于脏向纳米疗法的扩展和临床转化至关重要.
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