推断表皮收延伸的积极和被动机械驱动因素
Sommer Anjum1,2, Deepthi Vijayraghavan1, Rodrigo Fernandez-Gonzalez3,4,5,6
1Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15260, USA.
bioRxiv : the preprint server for biology
|February 20, 2025
概括
动态细胞形状的变化揭示了发育过程中组织形态发生的机制. 使用新型索引分析活细胞和模拟细胞有助于区分塑造组织的活性和被动力.
科学领域:
- 发展生物学 发展生物学
- 生物物理学的生物物理.
- 细胞生物学 细胞生物学
背景情况:
- 组织形态发生,组织成型的过程,是由复杂的机械力驱动的.
- 收延伸 (CE) 是一个关键的发育过程,涉及组织的缩小和延长.
- 在CE中,区分活跃的细胞过程和对外部力量的被动反应仍然具有挑战性.
研究的目的:
- 开发一个用于分析动态细胞形状变化的计算框架,以确定潜在的形态遗传机制.
- 为了区分被动和活性细胞过程,驱动融合延伸 (CE).
- 在不同的模型系统中量化和比较各种CE机制的贡献.
主要方法:
- 构建一个被动和活性上皮细胞的计算模型CE.
- 通过活跃的异构性过程 (爬行,收缩,捕获) 模拟CE.
- 开发一条整合机械和统计方法的图像分析管道.
- 创建一个机制指数 (MEI) 来量化活细胞和模拟细胞之间的相似性.
主要成果:
- 模拟机制对组织形态和力传递协调有独特的贡献.
- 对*Xenopus*神经CE的分析揭示了被动运动和活性力量的结合.
- 在整个神经板中观察到推断机制的空间变化.
- 不同的活性模式在青,老鼠和CE模型中显示出不同的流行率.
结论:
- 动态细胞形状分析为组织形态发生的机械基础提供了洞察力.
- MEI有效量化了不同细胞机制对CE的贡献.
- 这一框架有助于理解机械如何影响物种间的组织和器官发育.
关键词:
生物物理学的生物物理.计算机建模 计算建模收的延伸 收的延伸皮质上皮质上皮质上皮质上强力推理 推理的力量.消化系统的消化在模拟中形态发生 形态发生 形态发生神经发射神经系统的形成.组织力学 组织力学更多相关视频
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