相关实验视频
Updated: Jun 17, 2025

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Characterizing Extracellular Vesicles from Biological Fluids
Published on: February 28, 2025
280
含有连素的细胞外囊泡的功能干粉
Mahmoud S Hanafy1, Michael A Sandoval1, Huy M Dao1
1Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, TX, United States.
International journal of pharmaceutics
|August 12, 2024
概括
薄膜冷干燥稳定连接体,一种细胞外囊泡 (EV),用于药物输送. 这种方法保留了它们的功能,并允许在更高的温度下储存,与液体形式不同.
科学领域:
- 生物技术是生物技术.
- 纳米医学是一种纳米医学.
- 材料科学 材料科学 材料科学
背景情况:
- 细胞外囊泡 (EVs) 被研究为药物输送系统.
- 连接体,一种专门的EV类型,利用连接体半通道进行直接的细胞内载荷传递.
- 目前的储存限制 (-80°C) 阻碍了连接体的实际应用.
研究的目的:
- 评估薄膜冷干燥的可行性,以创建稳定,功能性的连接体干粉.
- 评估冷干燥对连接体形态,结构和颗粒大小的影响.
- 为了确定冷干燥连接体是否在储存后保留连接体的半通道功能和治疗活性.
主要方法:
- 分离了过度表达连接素-43的连接体,并加载了素绿色染料.
- 进行了薄膜冷干燥,使用带有或没有聚烯利作为冷保护剂的三醇.
- 在干燥后和在不同温度下储存后评估了形态,颗粒大小,连接素半通道功能 (素释放试验) 和多克索鲁比辛活性.
主要成果:
- 薄膜冷干燥没有显著改变连接体形态,结构或颗粒大小.
- 从干粉中重新构成的连接体保留了功能性的连接素半通道,使货物释放.
- 经过冷干燥的连接体在4°C和-20°C保存一个月后仍然保持功能,与失去功能的液体配方不同.
结论:
- 薄膜冷干燥是一种生产稳定,功能性的连接体干粉的可行方法.
- 这种技术克服了当前的储存温度限制,增强了基于连接体的治疗方法的潜力.
- 冷干燥连接体保持药理活性,为改进的EV药物输送系统铺平了道路.
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