外骨部分涂层干细胞用于心肌梗塞恢复心肌梗塞
Huihui He1, Yuan Yuan2, Yunhong Wu1
1Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, 310000, China.
Advanced materials (Deerfield Beach, Fla.)
|November 14, 2023
概括
金属有机框架外骨架增强骨髓干细胞 (BMSC) 的生存和心脏修复. 部分涂层的BMSCs在心肌梗塞后改善细胞保留和功能,推进纳米生物混合设计.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 细胞生物学 细胞生物学
背景情况:
- 用于心脏修复的基于细胞的疗法面临着诸如低细胞存活率和保留率等挑战.
- 无生物材料提供了增强细胞功能和治疗结果的潜力.
- 金属有机框架 (MOF) 是一种新的生物整合材料类别.
研究的目的:
- 使用MOFs开发部分外骨覆盖的骨髓干细胞 (BMSCs).
- 为了提高BMSC的存活率,功能和保持心脏细胞治疗.
- 为了研究心肌修复中细胞-外骨相互作用的机制.
主要方法:
- 制造MOF外骨,用于部分涂层BMSCs.
- 在各种压力条件下 (ROS,pH,透压) 评估BMSC存活率.
- 评估细胞-细胞粘附,受体相互作用 (整合素α5β1) 和基因表达 (Vegfa,Cxcl12,Adm).
- 使用心肌梗塞模型进行体内研究,以评估静脉注射后的细胞保留和心脏功能.
主要成果:
- 部分涂层的BMSC在悬浮和不利条件下显著改善了生存率.
- 在涂层细胞中观察到增强的细胞间粘附和聚合,防止逃逸.
- MOF外骨与整合素α5β1相互作用,调节基因表达和生物功能.
- 在体内,涂层的BMSC在心肌梗塞中表现出优异的保留性,导致心脏功能改善,血管生成和减少亡.
结论:
- 部分MOF外骨涂层是一种可行的策略,可以提高BMSC存活率和心脏修复中的治疗疗效.
- 细胞外骨架相互作用,特别是与整合素α5β1相互作用,在增强细胞功能中起着至关重要的作用.
- 这种方法为开发用于再生医学的下一代纳米生物混合体提供了一个有希望的平台.
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