A mechanochemical model recapitulates distinct vertebrate gastrulation modes.

A mechanochemical model recapitulates distinct vertebrate gastrulation modes.
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DOI:
10.1126/sciadv.adh8152
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发表时间:
2023-12-08
期刊:
影响因子:
13.6
通讯作者:
Mahadevan, L.
Mahadevan, L.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Serra, Mattia;Najera, Guillermo Serrano;Chuai, Manli;Plum, Alex M.;Santhosh, Sreejith;Spandan, Vamsi;Weijer, Cornelis J.;Mahadevan, L.

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During vertebrate gastrulation, an embryo transforms from a layer of epithelial cells into a multilayered gastrula. This process requires the coordinated movements of hundreds to tens of thousands of cells, depending on the organism. In the chick embryo, patterns of actomyosin cables spanning several cells drive coordinated tissue flows. Here, we derive a minimal theoretical framework that couples actomyosin activity to global tissue flows. Our model predicts the onset and development of gastrulation flows in normal and experimentally perturbed chick embryos, mimicking different gastrulation modes as an active stress instability. Varying initial conditions and a parameter associated with active cell ingression, our model recapitulates distinct vertebrate gastrulation morphologies, consistent with recently published experiments in the chick embryo. Altogether, our results show how changes in the patterning of critical cell behaviors associated with different force-generating mechanisms contribute to distinct vertebrate gastrulation modes via a self-organizing mechanochemical process. A mechanochemical model explains self-organizing avian gastrulation flows and recapitulates other vertebrate gastrulation modes.
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