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arXiv 2403.14501cond-mat.softcond-mat.stat-mechq-bio.CB
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细胞组织顶点模型中微观伤口的愈合机制

Healing Regimes for Microscopic Wounds in the Vertex Model of Cell Tissues

R. F. Almada, N. A. M. Araujo, P. Patricio

AI总结:

结合顶点模型的平均场计算与数值模拟,研究组织特性与 purse-string 机制的相互作用对伤口愈合的影响,发现不同闭合机制并推导验证了闭合时间的解析表达式及机制有效阈值。

摘要:

上皮组织中的伤口会损害其在稳态中的关键作用。快速高效的伤口愈合包含多种机制,其中包括在其边缘形成收缩性肌动蛋白-肌球蛋白缆索,即 purse-string 机制。我们结合顶点模型的平均场计算与数值模拟,研究组织特性与 purse-string 机制间的相互作用及其对愈合过程的影响。我们发现不同机制:伤口开启、部分闭合或完全闭合。我们还推导了闭合时间的解析表达式,并通过数值模拟验证。本研究确立了 purse-string 机制足以实现闭合的条件,为相应阈值提供了解析平均场表达式。

英文摘要:

Wounds in epithelial tissues compromise their vital role in homeostasis. A rapid and efficient wound healing encompasses different mechanisms, which includes the formation of a contractile actin-myosin cable around its edge, known as the purse-string mechanism. We combine mean-field calculations and numerical simulations of the Vertex model to study the interplay between tissue properties and the purse-string mechanism and its impact on the healing process. We find different regimes, where the wound opens, closes partially or completely. We also derive an analytic expression for the closure time which is validated by numerical simulations. This study establishes under which conditions the purse-string mechanism suffices for closure, providing an analytical mean-field expression for the respective thresholds.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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