电脑识别的被固定在水凝输送载体上,使得亲和控制的蛋白质释放成为可能
Yuan Yao1, Celestine Hong1, Carter J Teal2
1Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON M5S 3E5, Canada; Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON M5S 3E1, Canada.
Acta biomaterialia
|December 18, 2025
概括
我们通过计算设计了来结合治疗生长因子,使血管内皮生长因子 (VEGF) 和血小板衍生生长因子 (PDGF) 从水凝中持续和顺序释放,释放的蛋白质仍然具有生物活性.
科学领域:
- 生物材料科学 生物材料科学
- 蛋白质工程是指蛋白质工程.
- 药物输送系统 药物输送系统
背景情况:
- 通过基于亲和性的释放系统进行治疗性蛋白质的管理,在确定适合的结合伙伴以获得最佳的蛋白质加载和释放动力学方面面临挑战.
- 通用蛋白质输送策略往往导致蛋白质降解,需要开发先进的输送平台.
研究的目的:
- 通过计算识别治疗生长因子的特定结合,增强基于水凝的输送平台.
- 从功能化水凝中实现血管内皮生长因子 (VEGF) 和血小板衍生生长因子 (PDGF) 的受控,延长和顺序释放.
主要方法:
- 利用计算引导的方法,包括来自蛋白质数据库的晶体结构数据和基于Rosetta的理性设计,以识别10个氨基酸结合剂.
- 采用生物层干涉测量来确认的与VEGF和PDGF的结合亲缘关系.
- 将质固定到甲基纤维素水凝中,并使用有限元素分析来计算释放动力学的建模.
主要成果:
- 确定了一种对VEGF有中度亲和力 (KD 10-5 M) 和对PDGF有较高亲和力 (KD 10-7 M) 的结体,芳香残留对结合至关重要.
- 从功能化水凝中证明了VEGF的长期和顺序释放,其次是PDGF.
- 释放动力学的计算建模准确地预测了实验数据,验证了设计方法.
结论:
- 一个以计算为指导的策略有效地识别了特定的蛋白质结合剂,从而提高了加载能力和控制地从水凝平台释放.
- 开发的系统促进了生物活性VEGF和PDGF的持续和顺序释放,这对于血管生成等应用至关重要.
- 这种识别蛋白质结合伙伴的方法广泛适用于设计先进的治疗性蛋白质递送系统.
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