包装驱动的机械传导:局部拥挤取代了细胞集体中YAP激活的粘附和刚性线索
Valeriia Grudtsyna1, Vinay S Swaminathan2,3, Amin Doostmohammadi1
1Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark.
Journal of the Royal Society, Interface
|January 15, 2026
概括
细胞包装密度,而不是单个细胞的力量,控制着细胞群中的YAP激活. 这一发现揭示了细胞集体如何调节机械传导,影响了组织工程和癌症研究.
科学领域:
- 细胞机械生物学 细胞机械生物学
- 生物物理学的生物物理.
- 发展生物学 发展生物学
背景情况:
- 机械传导调节关键细胞功能,如干细胞分化,伤口愈合和癌症.
- 虽然单细胞机械传导得到了充分的研究,但其在多细胞集体中的机制仍然不清楚.
- 是的相关蛋白 (YAP) 是机械转导的关键调节者.
研究的目的:
- 研究多细胞集体中YAP激活的主要决定因素.
- 了解细胞包装密度如何影响细胞组中的YAP活动.
- 将集体中的YAP监管与单个细胞中的YAP监管进行对比.
主要方法:
- 利用细胞集体研究YAP激活.
- 操纵细胞包装分数并分析其对YAP的影响.
- 在改变细胞和细胞基质粘附的条件下研究了YAP调节.
- 评估了YAP激活与基质刚性,E-cadherin和髓收缩性的独立性.
主要成果:
- 局部细胞包装分数是细胞集体中YAP激活的主要决定因素.
- 包装分数调节压力景观,导致稀疏区域的波动和密集区域的平衡.
- 通过包装分数来调节YAP的激活是强大的,并且尽管破坏了力传输,仍然存在.
- 集体中的YAP激活独立于基质刚性,E-cadherin和肌缩性,与单细胞不同.
结论:
- 当地细胞包装分数决定了多细胞环境中的YAP动态.
- 这一发现为集体细胞行为中的机械传导提供了新的视角.
- 这些发现对组织工程和理解瘤微环境有意义.
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