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首页> 外文期刊>new journal of physics >Entropy-driven cell decision-making predicts 'fluid-to-solid' transition in multicellular systems
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Entropy-driven cell decision-making predicts 'fluid-to-solid' transition in multicellular systems

机译:熵驱动的细胞决策预测了多细胞系统中的“流体到固体”转变

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摘要

Cellular decision making allows cells to assume functionally different phenotypes in response to microenvironmental cues, with or without genetic change. It is an open question, how individual cell decisions influence the dynamics at the tissue level. Here, we study spatio-temporal pattern formation in a population of cells exhibiting phenotypic plasticity, which is a paradigm of cell decision making. We focus on the migration/resting and the migration/proliferation plasticity which underly the epithelial-mesenchymal transition and the go or grow dichotomy. We assume that cells change their phenotype in order to minimize their microenvironmental entropy following the LEUP (Least microEnvironmental Uncertainty Principle) hypothesis. In turn, we study the impact of the LEUP-driven migration/resting and migration/proliferation plasticity on the corresponding multicellular spatio-temporal dynamics with a stochastic cell-based mathematical model for the spatio-temporal dynamics of the cell phenotypes. In the case of the go or rest plasticity, a corresponding mean-field approximation allows to identify a bistable switching mechanism between a diffusive (fluid) and an epithelial (solid) tissue phase which depends on the sensitivity of the phenotypes to the environment. For the go or grow plasticity, we show the possibility of Turing pattern formation for the 'solid' tissue phase and its relation with the parameters of the LEUP-driven cell decisions.
机译:细胞决策允许细胞在响应微环境线索时呈现出不同的功能表型,无论是否发生遗传变化。这是一个悬而未决的问题,单个细胞的决定如何影响组织水平的动力学。在这里,我们研究了表现出表型可塑性的细胞群中的时空模式形成,这是细胞决策的范式。我们专注于迁移/静息和迁移/增殖可塑性,它们是上皮-间充质转化和去或生长二分法的基础。我们假设细胞改变其表型,以最小化其微环境熵,遵循LEUP(最小微环境不确定性原理)假说。反过来,我们研究了LEUP驱动的迁移/静息和迁移/增殖可塑性对相应的多细胞时空动力学的影响,并利用基于随机细胞的细胞表型时空动力学数学模型。在去或静止可塑性的情况下,相应的平均场近似允许识别扩散(流体)和上皮(固体)组织相之间的双稳态切换机制,这取决于表型对环境的敏感性。对于可塑性,我们展示了“固体”组织阶段图灵模式形成的可能性及其与LEUP驱动的细胞决策参数的关系。

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