调节水凝亲和力,以控制抗体的释放
Daniela Isaacs-Bernal1, Brenda Coles2, Lia Huo3
1Department of Chemical Engineering & Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON, M5S 3E5, Canada; Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College Street, Toronto, ON, M5S 3E1, Canada.
Biomaterials
|January 14, 2026
概括
这项研究开发了一种新的水凝系统,用于使用特定的结合相互作用控制抗体释放. 这种方法可以持续向眼睛输送治疗药物,效果优于重复注射.
科学领域:
- 生物材料科学 生物材料科学
- 眼科医生 眼科 眼科
- 药物运输 药物运输 药物运输
背景情况:
- 特定的亲和相互作用使功能性水凝能够释放可调节的蛋白质.
- 基于抗体的疗法为治疗眼睛疾病提供了潜力,但需要有效的输送系统.
研究的目的:
- 探索抗体治疗药物的受控释放,使用与水凝内的固定配体的亲和相互作用来探索.
- 开发一种双抗体输送策略,以刺激成年哺乳动物眼中的视网膜干细胞.
主要方法:
- 以特定片段结晶域联体 (FcL) 为基的基凝的功能化.
- 利用氧化物化学用于水凝交联和反向电子需求,用于FcL结合的Diels-Alder.
- 研究了体外蛋白质保留和稳定性,以及体内成年CD1小鼠体内注射的体内疗效.
主要成果:
- 具有FcL功能的水凝显示出亲和力介导的抗体保留,减少突发释放并保持蛋白质的稳定性.
- 一次内注射的水凝配方在四天内有效刺激了视网膜干细胞.
- 水凝的输送与三次重复的玻尿酸注射的疗效相匹配,突出了相对于传统的输送的优势.
结论:
- 开发的水凝平台可以通过非共价亲和相互作用来控制,持续释放抗体治疗药物.
- 这项技术显示出各种基于抗体的疗法的巨大潜力,并为局部眼部药物输送提供了一个有前途的方法.
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