使用动态共价化学进行长期局部麻醉的聚合原药
Tianrui Xue1, Yang Li1, Matthew Torre2
1Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, 02115, United States.
Angewandte Chemie (International ed. in English)
|June 17, 2024
概括
这项研究开发了一种新的前药物策略,使用动态共价化学来持续药物输送. 新方法有效降低了四毒素 (TTX) 毒性和延长了神经阻塞持续时间.
科学领域:
- 聚合物化学 聚合物化学
- 药物输送系统是药物输送系统.
- 纳米技术纳米技术
背景情况:
- 仓库类型的药物递送系统旨在持续释放药物,这对于像四毒素 (TTX) 这样的小水友分子来说是个挑战.
- 尽量减少最初的药物爆发对于强效药物如TTX来减轻系统性毒性至关重要.
- 现有的方法,如结,可以导致缓慢的水解和次治疗释放率.
研究的目的:
- 开发一种用于控制释放四毒素 (TTX) 的前药物策略,使用动态共价化学.
- 为了创建聚合物纳米粒子,封装TTX具有高效率和可调节的释放率.
- 评估TTX聚合物前药物在体内疗效和安全性,用于长期的神经阻塞.
主要方法:
- 开发的聚合物预制药利用二醇含有TTX和酸之间的可逆反应.
- 在聚合物纳米粒子中实现高TTX封装效率 (>90%).
- 在体内注射到坐骨神经的TTX聚合原药.
主要成果:
- 聚合物前药物显示可调节的TTX释放率.
- 相比于自由的TTX,体内给药降低了TTX的全身毒性.
- 使用TTX前期药物达到9.7±2.0小时的神经阻塞持续时间,比自由TTX (1.6±0.6小时) 长得多.
- 与德克萨米他并发的药物进一步延长了神经阻塞到21.8±5.1小时.
结论:
- 动态共价化学为设计仓库类型药物递送系统提供了一种多功能方法.
- 这一策略使得像TTX这样的药物能够得到控制和持续释放,减轻毒性并提高治疗效果.
- 开发的前期药物系统对长效局部麻醉和潜在的联合递送应用具有前景.
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