接触抑制运动对受限细胞组织的影响
Harshal Potdar1, Ignacio Pagonabarraga2,3, Sudipto Muhuri4
1Department of Physics, Savitribai Phule Pune University, Pune, 411007, India.
Scientific reports
|December 4, 2023
概括
这项研究模拟了1D通道中的细胞迁移,揭示了接触抑制运动 (CIL) 和活动如何影响细胞群形成. 较高的活动导致较大的集群,CIL强度对平均集群大小产生复杂的影响.
科学领域:
- 物理 物理学 物理
- 生物物理学的生物物理.
- 数学生物学 数学生物学
背景情况:
- 细胞迁移在生物过程中至关重要.
- 接触阻断运动 (CIL) 描述了细胞在接触时改变方向.
- 了解狭窄空间中的集体细胞行为是具有挑战性的.
研究的目的:
- 开发一个最小的1D Active 旋转模型,用于使用CIL进行细胞迁移.
- 分析新出现的集体行为和对驱动力的模式敏感性.
- 调查细胞包装密度和活动对集群形成的影响.
主要方法:
- 开发了一个离散的,最小的1D Active旋转模型.
- 分析了缺席和缺席空缺的模型行为.
- 定义了一个无维的Péclet数 (Q) 来描述粒子动态.
- 采用分析方法,包括在高Q极限中映射到平衡过程.
主要成果:
- 在密集的包装 (没有空缺),动态停止,减少到一个平衡模型.
- 随着空缺,CIL,活动和极性切换产生指数级集群大小分布.
- 平均集群大小随着Péclet数 (Q) 的增加而增加,但在高Q时显示出对CIL强度的非单调依赖.
- 对集群大小依赖于CIL和Q的分析预测得到了验证.
结论:
- 1D Active 旋转模型捕捉了与 CIL.一起出现的集体细胞迁移.
- 细胞的排列和活动显著地影响了集群动态.
- 该模型提供了关于物理力和细胞-细胞相互作用如何在有限的环境中控制集体细胞行为的见解.
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