基质粘弹性调节纤维细胞粘附和迁移
Neha Paddillaya1, Akshar Rao1, Anshul Shrivastava1
1Department of Mechanical Engineering, Indian Institute of Science, Bangalore 560012, India.
Biointerphases
|August 18, 2025
概括
细胞外矩阵的粘弹性,而不仅仅是刚性,显著影响纤维细胞的行为. 粘弹性基板减少细胞粘附和引,促进迁移和增殖,为组织工程和疾病建模提供新的策略.
科学领域:
- 生物物理学的生物物理.
- 细胞生物学 细胞生物学
- 材料科学 材料科学 材料科学
背景情况:
- 细胞外矩阵 (ECM) 的机械特性影响细胞行为.
- 在纤维性疾病中ECM粘性弹性的作用不如刚性被理解得多.
- 了解机械生物学对于组织工程和再生医学至关重要.
研究的目的:
- 研究细胞外矩阵 (ECM) 粘性如何影响人类乳腺纤维细胞的生物物理性质和信号传递.
- 为了比较弹性 (E) 与粘性弹性 (VE) 水凝上的细胞行为,使用类似的存储模块.
- 探索能量消散在调节纤维细胞功能中的作用.
主要方法:
- 设计了弹性和粘性弹性聚烯胺水凝,具有相似的存储模块,但不同的损失模块.
- 在这些水凝上培养了人类乳腺纤维细胞.
- 量化细胞扩散面积,应力纤维,焦粘度大小,粘度强度,引应力,迁移,增殖和Yes相关蛋白 (YAP) 活性.
主要成果:
- 与E基板相比,VE基板上的纤维细胞显示了较小的焦点粘附区域,较低的关键粘附强度和减少的引应力.
- VE基底促进纤维细胞迁移和增殖,同时降低YES相关蛋白 (YAP) 活性.
- E基质导致了广泛的细胞扩散,突出的应力纤维和YAP核转位,表明细胞骨张力更大.
结论:
- 以能量消耗为特征的ECM粘性弹性显著调节纤维细胞功能,包括粘附,迁移和增殖.
- 调整ECM粘弹性提供了一种策略,以控制组织工程支架中的细胞行为.
- 这些发现有助于更好的疾病建模纤维状况和再生医学.
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