Advanced Materials·· 13 小时前精选AI 评分62
可编程降解的颗粒水凝胶通过调控微凝胶降解速率引导细胞外基质组装
Programmable Microgel Degradation in Dynamic Granular Hydrogels Guides Extracellular Matrix Assembly During Tissue Repair
AI 导读
研究团队用降解速率从数天到数周可调的微凝胶模块化组装出动态颗粒水凝胶，降解速率通过调节透明质酸聚合物的水解敏感性来控制。在小鼠肌肉挤压伤模型中，慢降解水凝胶在扩张的孔隙中支持细胞指导性间质基质与基底膜蛋白形成特定空间组装，而非降解或快降解水凝胶中这一临时细胞外基质重塑被改变。慢降解动态颗粒水凝胶还表现出减少纤维化、增强肌生成和改善功能力恢复的长期治疗效果。
推荐理由
通过调节透明质酸水解敏感性来设定微凝胶降解速率，读者可据此判断颗粒水凝胶孔隙扩张的时间窗口如何影响组织修复。
创新点
把微凝胶降解速率作为可编程变量引入颗粒水凝胶，使孔隙扩张按时间发生，并证明降解快慢本身决定临时细胞外基质能否在孔隙中正确组装。
图表、补充材料与最终表述以原文为准。阅读原文
来源：Advanced Materials · doi.org
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