Cell and Tissue Scale Forces Coregulate Fgfr2-Dependent Tetrads and Rosettes in the Mouse Embryo.

Cell and Tissue Scale Forces Coregulate Fgfr2-Dependent Tetrads and Rosettes in the Mouse Embryo.
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细胞和组织规模迫使小鼠胚胎中 Fgfr2 依赖性四分体和玫瑰花结共同调节。

DOI:
10.1016/j.bpj.2017.04.024
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发表时间:
2017
影响因子:
3.4
通讯作者:
S. Hopyan
S. Hopyan
中科院分区:
生物学3区
文献类型:
--
作者:
Jun Wen;Hirotaka Tao;Kimberly Lau;Haijiao Liu;C. Simmons;Yu Sun;S. Hopyan

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是什么促使动物细胞嵌入是一个长期存在的问题,是形态发生的基础。细胞重排的基本模式涉及称为四分体和莲座体的动态多细胞结构。这些结构的形成和分辨率的细胞内在和组织规模的力量的贡献仍然不清楚,特别是在脊椎动物。在这里,我们表明,Fgfr 2调节的形成和分辨率的四分体和roadhesion在小鼠胚胎中,可能在一定程度上通过空间限制非典型蛋白激酶C,非肌肉肌球蛋白IIB的负调节。我们采用微量吸管抽吸显示,各向异性张力是足以拯救的决议,但不是形成,四分体和rostenoinFgfr2突变体肢芽外胚层。这些发现分别强调了细胞收缩性和组织应力对多细胞顶点形成和消退的重要性。
What motivates animal cells to intercalate is a longstanding question that is fundamental to morphogenesis. A basic mode of cell rearrangement involves dynamic multicellular structures called tetrads and rosettes. The contribution of cell-intrinsic and tissue-scale forces to the formation and resolution of these structures remains unclear, especially in vertebrates. Here, we show thatFgfr2regulates both the formation and resolution of tetrads and rosettes in the mouse embryo, possibly in part by spatially restricting atypical protein kinase C, a negative regulator of non-muscle myosin IIB. We employ micropipette aspiration to show that anisotropic tension is sufficient to rescue the resolution, but not the formation, of tetrads and rosettes inFgfr2mutant limb-bud ectoderm. The findings underscore the importance of cell contractility and tissue stress to multicellular vertex formation and resolution, respectively.
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