Dynamic analyses of Drosophila gastrulation provide insights into collective cell migration.

Dynamic analyses of Drosophila gastrulation provide insights into collective cell migration.
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果蝇胃肠道的动态分析提供了对集体细胞迁移的见解。

DOI:
10.1126/science.1167094
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发表时间:
2008-12-05
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Stathopoulos A
Stathopoulos A
中科院分区:
其他
文献类型:
--
作者:
McMahon A;Supatto W;Fraser SE;Stathopoulos A

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来自不同胚层的细胞的协同运动有助于早期胚胎发育期间的形态发生。使用优化的成像方法和定量方法,我们分析了数百个外胚层细胞和内化的中胚层细胞在果蝇胚胎内的原肠胚形成过程中超过2小时的轨迹。我们发现了高水平的细胞组织,中胚层细胞运动与一些但不是所有的外胚层运动相关。在迁移过程中,中胚层群体经历了两个有序的细胞分裂和同步的细胞嵌入波,并在前缘的细胞稳定地保持位置。成纤维细胞生长因子(FGF)的信号引导中胚层细胞迁移,然而,我们发现一些直接的背部迁移的FGF受体突变体,这表明,额外的信号参与。因此,分解复杂的细胞运动可以提供对集体细胞迁移的详细见解。
The concerted movement of cells from different germ layers contributes to morphogenesis during early embryonic development. Using an optimized imaging approach and quantitative methods, we analyzed the trajectories of hundreds of ectodermal cells and internalized mesodermal cells within Drosophila embryos over 2 hours during gastrulation. We found a high level of cellular organization, with mesoderm cell movements correlating with some but not all ectoderm movements. During migration, the mesoderm population underwent two ordered waves of cell division and synchronous cell intercalation, and cells at the leading edge stably maintained position. Fibroblast growth factor (FGF) signaling guides mesodermal cell migration; however, we found some directed dorsal migration in an FGF receptor mutant, which suggests that additional signals are involved. Thus, decomposing complex cellular movements can provide detailed insights into collective cell migration.
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