肌干细胞分布,形态和基因表达的调节由微纤维的模量
Ya-Jing Ye1, Yi-Fan Xu1, Ya-Bo Hou1
1Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, ShaanXi 710072, PR China.
Colloids and surfaces. B, Biointerfaces
|June 16, 2023
概括
这项研究制造了微纤维支架,以研究它们对肌干细胞 (TSC) 的影响. 适度的支架模块优化了TSC行为和基因表达,这表明了工程肌愈合的潜力.
科学领域:
- 生物材料科学 生物材料科学
- 干细胞生物学 干细胞生物学
- 组织工程是组织工程.
背景情况:
- 基质的机械特性极大地影响干细胞的行为 (粘附,增殖,分化).
- 识别本地利基的物理特征对于设计有效的干细胞基质至关重要.
- 肌干细胞 (TSC) 的行为对于肌修复和再生至关重要.
研究的目的:
- 使用近场电制造具有不同弹性模块的微纤维支架.
- 研究这些支架对肌干细胞 (TSC) 体外行为的影响.
- 为了确定TSC的最佳机械微环境,以促进肌愈合.
主要方法:
- 微纤维支架的制造通过近场电通过各种弹性模块.
- 在具有不同模块的支架上培养肌干细胞 (TSC).
- 量化TSC伪,扩散,极化和对齐.
- 分析肌特定基因 (Col-I,Tnmd,SCX,TNCF) 的表达.
主要成果:
- TSC 伪体与脚手架模量表现出双相关系.
- 随着脚手架模块的增加,TSC的扩散,极化比和对齐都增加了.
- 适度的支架模量 (1429 MPa) 在TSC上调节了肌特异性基因.
- 微纤维支架在微米尺度上有效调节了TSC行为.
结论:
- 工程微纤维支架可以为TSC提供教学性的机械微环境.
- 优化支架模块是调节肌修复的TSC行为的关键.
- 这些发现支持人工干细胞基质的开发,以增强肌愈合.
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