弹性透囊模仿玻尿酸注射,在延迟爆发时具有高释放率
Veronica Hidalgo-Alvarez1, Kerr D G Samson2, Vasiliki Kolyva3
1Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom; Department of Materials Science and Engineering, University of Pennsylvania, United States.
International journal of pharmaceutics
|April 6, 2025
概括
新的弹性囊模仿疫苗强剂注射,即时释放75%的内容. 这种新型药物输送系统使用了透驱动的胀和破裂,改善了疫苗的遵守性和降低了成本.
科学领域:
- 生物材料科学 生物材料科学
- 药物输送系统 药物输送系统
- 疫苗技术 疫苗技术 是一种
背景情况:
- 重复接种疫苗是昂贵的,在后勤上很困难,并降低了患者的遵守.
- 透驱动的胀和破裂为延迟药物释放提供了一个潜在的机制,模仿强剂注射.
- 之前的微粒和单体植入系统没有在爆裂时实现高即时释放.
研究的目的:
- 开发能够通过透诱导破裂即时释放药物的弹性囊.
- 描述这些新的囊的释放动力学,胀行为和爆裂时间.
- 评估囊材料的生物相容性和降解概况.
主要方法:
- 弹性囊使用罗拉克-乳酸盐共聚合物制造.
- 囊在不同强度的化液中进行化,以诱导胀和破裂.
- 释放概况,膨胀比率和爆裂时间被量化.
- 模拟了吸水率以确定囊的透性.
- 用巨细胞系来评估细胞毒性.
- 通过散装水解来研究降解.
- 在体内给药被测试在牛尸体中.
主要成果:
- 开发的囊实现了75±8%的即时释放.
- 囊通过可再生的透诱导的吸水量膨胀到原始质量的5倍.
- 水的吸收率与透强度相关,计算的水透率为3.6 ± 0.2 mm2/ (Pa·day).
- 爆发时间从16天到37天不等,受透强度和囊度的影响.
- 该物质对巨细胞无毒性,并通过散装水解降解,估计在8个月内降解.
- 在使用标准应用器的牛尸体中取得了成功的管理.
结论:
- 弹性卡普罗拉克-乳酸共聚合物囊通过透诱导的破裂有效地提供大量初始剂量的内容.
- 这项技术提出了一个有希望的策略,消除了对后续补充注射的需求,提高了对疫苗的合规性,并降低了医疗保健负担.
- 囊表现出良好的生物相容性,可预测的降解和实用的施用方法.
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