The hippo pathway effector Yap controls patterning and differentiation of airway epithelial progenitors.

The hippo pathway effector Yap controls patterning and differentiation of airway epithelial progenitors.
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DOI:
10.1016/j.devcel.2014.06.003
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发表时间:
2014-07-28
期刊:
影响因子:
11.8
通讯作者:
Cardoso WV
Cardoso WV
中科院分区:
生物学1区
文献类型:
--
作者:
Mahoney JE;Mori M;Szymaniak AD;Varelas X;Cardoso WV

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上皮祖细胞在器官发生过程中如何整合局部信号以平衡扩张与分化,目前尚不清楚。在这里,我们提供的证据表明,Hippo通路效应物Yap是肺发育过程中这一过程的关键调节剂。我们发现,当上皮小管形成和分支时,Yap的核胞质移位标志着气道和远端肺室之间的边界。在这个过渡区,Yap指定了一个转录程序,控制Sox2的表达并最终生成气道上皮。如果没有Yap,上皮祖细胞就不能对局部tgf β诱导的信号做出适当的反应,也不能控制Sox2的水平和分布,从而形成气道。Yap水平和亚细胞定位也显著影响Sox2的表达和成人气道祖细胞的分化。我们的数据揭示了hipo - yap通路在发育和成年肺中整合生长因子诱导的线索中的作用,这可能是体内平衡和再生修复的关键。
How epithelial progenitor cells integrate local signals to balance expansion with differentiation during organogenesis is still little understood. Here we provide evidence that the Hippo pathway effector Yap is a key regulator of this process in the developing lung. We show that when epithelial tubules are forming and branching a nucleocytoplasmic shift of Yap marks the boundary between the airway and the distal lung compartments. At this transition zone, Yap specifies a transcriptional program that controls Sox2 expression and ultimately generates the airway epithelium. Without Yap, epithelial progenitors are unable to properly respond to local TGFβ-induced cues and control levels and distribution of Sox2 to form airways. Yap levels and subcellular localization also markedly influence Sox2 expression and differentiation of adult airway progenitors. Our data reveal a role for the Hippo-Yap pathway in integrating growth factor-induced cues in the developing and adult lung potentially key for homeostasis and regeneration-repair.
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