Btbd7 regulates epithelial cell dynamics and branching morphogenesis.

Btbd7 regulates epithelial cell dynamics and branching morphogenesis.
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DOI:
10.1126/science.1191880
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发表时间:
2010-07-30
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Yamada KM
Yamada KM
中科院分区:
其他
文献类型:
--
作者:
Onodera T;Sakai T;Hsu JC;Matsumoto K;Chiorini JA;Yamada KM

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在胚胎发育过程中,许多器官是由上皮细胞通过裂缝和芽的形成而广泛分支形成的。在裂隙的形成中,芽是由上皮细胞-细胞粘附转化为细胞-基质粘附而形成的,但裂隙形成的机制尚不清楚。在这里,我们确定Btbd 7作为分支形态发生的动态调节器。Btbd 7通过其高度集中的表达提供了细胞外基质和裂缝传播之间的机械联系,导致Snail 2(Slug)、E-钙粘蛋白和上皮细胞运动性的局部调节。抑制实验表明Btbd 7是胚胎哺乳动物唾液腺和肺分支所必需的。因此,Btbd 7是促进上皮组织重塑和分支器官形成的调控基因。
During embryonic development, many organs form by extensive branching of epithelia through the formation of clefts and buds. In cleft formation, buds are delineated by the conversion of epithelial cell-cell adhesions to cell-matrix adhesions, but the mechanisms of cleft formation are not clear. Here we identify Btbd7 as a dynamic regulator of branching morphogenesis. Btbd7 provides a mechanistic link between the extracellular matrix and cleft propagation through its highly focal expression leading to local regulation of Snail2 (Slug), E-cadherin, and epithelial cell motility. Inhibition experiments show that Btbd7 is required for branching of embryonic mammalian salivary glands and lungs. Hence Btbd7 is a regulatory gene that promotes epithelial tissue remodelling and formation of branched organs.
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