Cell division and death inhibit glassy behaviour of confluent tissues.

Cell division and death inhibit glassy behaviour of confluent tissues.
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细胞分裂和死亡抑制汇合组织的玻璃状行为。

DOI:
10.1039/c6sm02580c
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发表时间:
2017
期刊:
影响因子:
3.4
通讯作者:
Matoz-Fernandez DA
Matoz-Fernandez DA
中科院分区:
化学2区
文献类型:
--
作者:
Matoz-Fernandez DA

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我们研究了细胞分裂和凋亡对二维上皮组织集体动力学的影响。我们的模型包括在许多上皮细胞中观察到的三个关键成分,即细胞-细胞黏附、细胞死亡和依赖于周围环境的细胞分裂过程。我们展示了丰富的非平衡相图,依赖于细胞死亡与细胞分裂的比率和黏附强度。对于较大的凋亡率,细胞死亡,组织解体。然而,随着死亡率的降低,我们连续显示出气相、凝胶相和致密融合(组织)相的存在。最令人惊讶的是,观察到组织通过自身的内部活动自我融化,排除了任何玻璃相的存在。
We investigate the effects of cell division and apoptosis on collective dynamics in two-dimensional epithelial tissues. Our model includes three key ingredients observed across many epithelia, namely cell–cell adhesion, cell death and a cell division process that depends on the surrounding environment. We show a rich non-equilibrium phase diagram depending on the ratio of cell death to cell division and on the adhesion strength. For large apoptosis rates, cells die out and the tissue disintegrates. As the death rate decreases, however, we show, consecutively, the existence of a gas-like phase, a gel-like phase, and a dense confluent (tissue) phase. Most striking is the observation that the tissue is self-melting through its own internal activity, ruling out the existence of any glassy phase.
DOI: 10.1080/10255842.2013.780048
发表时间: 2015-01
影响因子: 1.6
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