机械激活细胞疗法加速糖尿病伤口愈合
Yufeng Shou1,2, Zhicheng Le1,2, Hong Sheng Cheng3
1Department of Biomedical Engineering, National University of Singapore, Singapore, 117583, Singapore.
Advanced materials (Deerfield Beach, Fla.)
|September 8, 2023
概括
一种新型的磁反应性水凝系统通过将细胞疗法与动态机械刺激相结合,加速糖尿病伤口愈合. 这种"全合一"的平台增强了细胞活动,促进了组织修复,并调节了葡萄糖水平,以改善治疗结果.
科学领域:
- 生物医学工程 生物医学工程
- 再生医学是一种再生医学.
- 伤口愈合 治愈 伤口愈合
背景情况:
- 慢性糖尿病伤口是全球主要的健康负担,目前的治疗效果有限.
- 现有的策略往往无法解决糖尿病伤口并发症的多种病理方面.
- 需要先进的治疗平台来改善糖尿病伤口愈合结果.
研究的目的:
- 开发和评估一种新的平台技术,以加速糖尿病伤口愈合.
- 研究磁电响应水凝,封装细胞和磁电诱导动态机械刺激 (MDMS) 的联合作用.
- 评估平台能够解决糖尿病伤口中的关键病理因素的能力.
主要方法:
- 开发一种磁电响应的水凝系统,封装纤维细胞和角质细胞.
- 无线磁带诱导动态机械刺激 (MDMS) 的应用,用于纤维细胞的非遗传机械-静电激活.
- 分析细胞增殖,原沉积,角质细胞对膜信号传递和血管生成.
- 通过水凝变形对按需胰岛素释放进行葡萄糖调节的研究.
- 使用scRNAseq数据来识别和表征机械敏感纤维细胞亚群.
主要成果:
- 在糖尿病小鼠模型中,水凝系统实现了大约3倍更好的伤口关闭.
- MDMS显著增强纤维细胞增殖 (∼240%) 和原沉积 (∼220%).
- 通过Ras/MEK/ERK通路,MDMS改善了角质细胞的副膜形状,促进了血管生成.
- 磁电响应的水凝可以在需要时释放胰岛素,用于局部控制血糖.
- 确定可调整以获得治疗益处的机械敏感纤维细胞亚群.
结论:
- 开发的"全合一"平台通过解决多种病理因素,有效地加速糖尿病伤口愈合.
- MDMS作为一种强大的非遗传性刺激,可以增强细胞功能,这对组织再生至关重要.
- 该系统展示了治疗复杂伤口的潜力,包括与糖尿病相关的伤口.
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