Interplay of cell shape and division orientation promotes robust morphogenesis of developing epithelia.
Interplay of cell shape and division orientation promotes robust morphogenesis of developing epithelia.
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DOI:
10.1016/j.cell.2014.09.007
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发表时间:
2014-10-09
期刊:
影响因子:
64.5
通讯作者:
Megason SG
中科院分区:
文献类型:
--
作者:
Xiong F;Ma W;Hiscock TW;Mosaliganti KR;Tentner AR;Brakke KA;Rannou N;Gelas A;Souhait L;Swinburne IA;Obholzer ND;Megason SG
Epithelial cells acquire functionally important shapes (e.g., squamous, cuboidal, columnar) during development. Here we combine theory, quantitative imaging, and perturbations to analyze how tissue geometry, cell divisions, and mechanics interact to shape the presumptive enveloping layer (pre-EVL) on the zebrafish embryonic surface. We find that, under geometrical constraints, pre-EVL flattening is regulated by surface cell number changes following differentially oriented cell divisions. The division pattern is in turn determined by the cell shape distribution, which forms under geometrical constraints by cell-cell mechanical coupling. An integrated mathematical model of this shape-division feedback loop recapitulates empirical observations. Surprisingly, the model predicts robust cell shapes to changes of tissue surface area, cell volume and cell number, which we confirm in vivo. Further simulations and perturbations suggest the parameter linking cell shape and division orientation contributes to epithelial diversity. Together, our work identifies an evolvable design-logic that enables robust cell-level regulation of tissue-level development.
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影响因子:
4.6
作者:
Chalmers, AD;Pambos, M;Papalopulu, N
通讯作者:
Papalopulu, N
影响因子:
2.7
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KIMMEL, CB;LAW, RD
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LAW, RD
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El-Hashash, Ahmed H. K.;Turcatel, Gianluca;Warburton, David
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Warburton, David
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2.5
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KIMMEL, CB;BALLARD, WW;SCHILLING, TF
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SCHILLING, TF
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作者:
FANKHAUSER, G
通讯作者:
FANKHAUSER, G