针对性ROS响应的小凝系统,用于提高角膜新血管化疗法中德克萨米他的生物可用性和持续的递送
Bo Yang1, Xiaoge Fu2, Guangyuan Zhang2
1Department of Anesthesiology, The Second Hospital of Jilin University, Changchun, Jilin 130041, China; School of Life Sciences, Jilin University, Changchun 130012, China.
International journal of pharmaceutics
|February 13, 2026
概括
一种新的小凝系统通过向和释放药物以响应活性氧物种 (ROS) 来有效治疗角膜新血管化 (CoNV). 这种有针对性的输送改善了药物保留率和治疗疗效.
科学领域:
- 眼科医生 眼科 眼科
- 生物材料科学 生物材料科学
- 药物输送系统 药物输送系统
背景情况:
- 角膜新血管化 (CoNV) 由于眼部药物保留不良,向不充分和快速清除, presents显著的治疗挑战.
- 现有的冠状病毒治疗方法往往具有有限的疗效和副作用,需要创新的输送策略.
研究的目的:
- 开发一种新型的反应性氧物种 (ROS) 响应和整合素向的微粒凝复合物输送系统,以提高眼部生物可用性和治疗有效性,用于治疗CoNV.
- 评估开发系统的物理化学性质,药物释放动力学,细胞吸收和体内治疗效果.
主要方法:
- 合成甲氧多聚乙烯甘醇-多硫化 (mPEG-PPS) 并与cRGD-PEG-PLGA联合组装以形成含德甲的混合 (cRGD-DPPM).
- 将cRGD-DPPMs纳入一个假设的Pluronic F127凝中,以创建一个对ROS敏感的菌凝系统 (cRGD-DPPMs/Gel).
- 在体外表征包括颗粒大小,药物加载,封装效率,ROS触发的药物释放和使用HUVEC的细胞吸收研究. 在体内疗效被评估在老鼠性烧伤诱导的CovNV模型中.
主要成果:
- 该cRGD-DPPMs/Gel系统表现出有利的物理化学特性,平均颗粒大小为144.9nm,药物负载为7.62%,封装效率为89.74%.
- 该配方证明了ROS触发的甲释放,在H2O2下在72小时内达到83.17%的释放,同时在生理条件下提供持续释放.
- 在体内研究表明,在未经治疗的组中,新血管化的区域显著减少 (19.04% vs 47.62%),并抑制炎症性细胞因子和VEGF表达在老鼠CoinV模型中,而不会增加眼内压力.
结论:
- 开发的ROS响应和整合素向的微凝系统为持续和向的眼部药物递送提供了一个有前途的战略.
- 这种配方增强了角膜新血管化的眼部生物可用性和治疗疗效,解决了当前治疗方法的关键局限性.
- 这项研究强调了先进生物材料在开发有效治疗眼部疾病 (如CoNV) 的潜力.
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