自组装的多层MSC-sheet促进了伤口愈合,增加了M2巨细胞的两极化
Qiannan Zhao1, Michiharu Sakamoto2, Jinya Liu1
1Department of Plastic and Reconstructive Surgery, Faculty of Medicine, Graduate School of Medicine, Kyoto University, 54 Shogoin, Kawahara-cho, Sakyou-ku, Kyoto, 606-8507, Japan.
Scientific reports
|December 26, 2025
概括
自组装的多层介质干细胞 (MSC) 叶片通过改善细胞保留和促进M2巨细胞的极化,显著增强慢性伤口愈合,优于传统的MSC悬浮输送方法.
科学领域:
- 再生医学是一种再生医学.
- 生物材料科学 生物材料科学
- 伤口治愈研究研究 伤口治愈研究
背景情况:
- 中介细胞干细胞 (MSC) 治疗显示出慢性伤口治疗的潜力.
- 伤口部位的MSC保留和细胞密度有限,阻碍了治疗疗效.
- 需要新的交付平台来改善基于MSC的伤口愈合.
研究的目的:
- 在小鼠伤口模型中评估自组装多层MSC片的治疗潜力.
- 为了比较MSC-sheets与MSC-suspensions在促进伤口愈合和调节免疫微环境方面的疗效.
- 调查MSC表对巨细胞透和极化的影响.
主要方法:
- 来自人类脂肪组织的多层MSC片的制备和表征.
- 在小鼠全厚皮肤缺陷模型中的体内评估,使用MSC表,MSC悬浮和对照.
- 使用组织学和分子技术评估伤口愈合参数 (面积,新皮质化,颗粒组织,血管生成) 和细胞保留.
- 通过免疫组织化学和RT-PCR分析巨细胞透和极化 (M1/M2).
主要成果:
- MSC-sheets表现出具有细胞外基质 (ECM) 的多层结构.
- 与对照组相比,MSC-sheet和MSC-suspension都加速了伤口的关闭,并改善了血管生成.
- 与MSC悬浮相比,MSC-sheets表现出优越的MSC保留和增强的M2巨细胞极化.
- RNA测序揭示了MSC-sheet相关的伤口愈合,抗炎和血管生成的途径.
结论:
- 自组装的多层MSC板是慢性伤口治疗的有希望的无支架平台.
- 通过增强细胞保留和调节巨细胞偏向向M2表型来改善治疗结果.
- 这项技术有可能在再生医学中进行可扩展和临床应用的翻译.
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