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Updated: May 14, 2025

Evaluation of the Storage Stability of Extracellular Vesicles
Published on: May 22, 2019
小牛奶衍生的细胞外囊泡:适合口服药物输送的载体?
Nidhi Seegobin1, Marissa Taub1, Cécile Vignal2
1Department of Pharmaceutics, UCL School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, United Kingdom.
牛奶细胞外囊泡 (EVs) 显示出有针对性肠道输送的潜力. 然而,它们在胃肠道液体中的稳定性限制了口服药物输送,这表明它们适合水友药物.
科学领域:
- 生物技术是生物技术.
- 药物输送系统 药物输送系统
- 胃肠病学 胃肠病学
背景情况:
- 炎症性肠病 (IBD) 治疗由于系统性副作用而面临挑战.
- 从牛奶中提取的细胞外囊泡 (EVs) 提供了针对性向炎症肠道组织药物输送的潜力.
- 在IBD中的"漏肠"效应可能会促进病区的EV积累.
研究的目的:
- 在模拟的胃肠道 (GI) 条件下,评估来自牛奶的EVs作为药物载体的稳定性.
- 在大肠炎小鼠模型中评估未加载EVs的治疗疗效.
- 确定EVs适用于输送脂友和水友药物的适用性.
主要方法:
- EVs在各种pH值和模拟的胃肠道液体中进行了化,使用laurdan评估了脂质双层稳定性.
- 脂友性 (阿克里丁色) 和水友性 (利博弗拉) 分子被装入EV中,以研究释放动力学.
- 没有装载的EV被口服或直肠给诱导性结肠炎的小鼠.
主要成果:
- EVs在不同的pH水平上表现出物理稳定性,但在酸性和富含酶的胃肠道环境中发生了脂质双层损伤.
- 观察到脂友性药物酸的显著释放,而水友性药物 рибофлавин仍然被封装.
- 在大肠炎小鼠模型中,没有观察到未加载的EV的治疗效果.
结论:
- 仅靠物理特征就不足以确定体内EV稳定性.
- 牛奶EVs由于胃肠道的不稳定性,对口服药物输送的潜力有限.
- 电动汽车可能更适合用于输送水友药物,并可能通过直肠输送途径.
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