An adhesion code ensures robust pattern formation during tissue morphogenesis.

An adhesion code ensures robust pattern formation during tissue morphogenesis.
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粘附代码确保在组织形态发生过程中稳健的模式形成。

DOI:
10.1126/science.aba6637
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发表时间:
2020-10-02
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Megason SG
Megason SG
中科院分区:
其他
文献类型:
--
作者:
Tsai TY;Sikora M;Xia P;Colak-Champollion T;Knaut H;Heisenberg CP;Megason SG

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胚胎发育中的一个突出问题是空间模式如何稳健地形成。在斑马鱼的脊髓中,神经祖细胞形成刻板的模式,尽管嘈杂的形态发生信号和大规模的细胞重排在形态发生。通过直接测量三种类型的内源性神经祖细胞的粘附力和偏好,我们提供了一个直接的证据的差异粘附模型,介导的差异钙粘蛋白的表达,协助组织图案在体内。N-钙粘蛋白、钙粘蛋白11和原钙粘蛋白19在每种细胞类型中的独特组合表达确保了离体的同型偏好和体内的图案化稳健性。细胞命运和粘附密码由Sonic hedgehog梯度调节。我们建议,强大的图案在组织形态发生的结果从以前不受重视的形态梯度和基于粘附的自组织之间的相互作用。神经管中的模式形成是基于形态发生素Sonic hedgehog指示的组合粘附代码的细胞自组织的结果。
An outstanding question in embryo development is how spatial patterns are formed robustly. In the zebrafish spinal cord, neural progenitors form stereotypic patterns despite noisy morphogen signaling and large-scale cellular rearrangements during morphogenesis. By directly measuring adhesion forces and preferences of three types of endogenous neural progenitors, we provided a direct proof of the differential adhesion model, mediated by differential cadherin expression, assisting tissue patterning in vivo. The unique combinatorial expression of N-cadherin, Cadherin 11, and Protocadherin 19 in each cell type ensures homotypic preference ex vivo and patterning robustness in vivo. The cell fate and adhesion codes are regulated by the Sonic hedgehog gradient. We propose that robust patterning during tissue morphogenesis results from a previously unappreciated interplay between morphogen gradient and adhesion-based self-organization. Pattern formation in the neural tube results from cellular self-organization based on a combinatorial adhesion code instructed by the morphogen Sonic hedgehog.
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