拉力调节的持久性控制了细胞类型的硬质性
Hongyuan Zhu1, Xiaoxi Liu1, Jin Wang1
1The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China; Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an 710049, PR China.
European journal of cell biology
|September 5, 2025
概括
细胞迁移方向取决于引力. 较高的强力促使人移动到更硬的环境中,而较低的强力则导致人移动到更软的环境中,从而揭示了多多塔克斯的统一机制.
科学领域:
- 细胞力学和生物物理学
- 癌症生物学和转移
- 生物材料科学和组织工程
背景情况:
- 细胞沿着硬度梯度迁移 (durotaxis) 对癌症的发展和转移至关重要.
- 确切的控制durotaxis的机制及其跨细胞类型的普遍性仍然不完全理解.
研究的目的:
- 研究细胞引力和定向持久性在决定细胞沿硬度梯度迁移中的作用.
- 在不同细胞类型和迁移行为中阐明硬质性偏差的统一机制.
主要方法:
- 使用可调节的聚乙烯甘 (PEG) 水凝,具有定义的刚度梯度 (1-16 kPa).
- 癌细胞中受损的细胞收缩性 (使用白素,寡素) 和粘附性 (使用素突变物).
- 开发并验证了整合引力和F-actin稳定性的计算模型以预测durotaxis.
主要成果:
- 具有高引力的细胞持续向更硬的环境迁移 (积极的硬度).
- 减少引力的细胞失去了持久性,并迁移到更柔软的环境 (负硬质).
- 计算模型成功地将依赖于硬度的引力与持久性联系起来,用单个参数集捕捉了这两种硬度的行为.
结论:
- 建立了一个统一的机制,其中引调节的持久性控制了durotaxis偏差,适用于细胞类型.
- 证明调节肌活性或粘附强化可以切换durotaxis状态.
- 这些发现为设计用于定向细胞迁移的生物材料和开发用于组织修复和癌症的治疗策略提供了洞察力.
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