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首页> 外文期刊>Development >Planar cell polarity signalling regulates cell adhesion properties in progenitors of the zebrafish laterality organ.
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Planar cell polarity signalling regulates cell adhesion properties in progenitors of the zebrafish laterality organ.

机译:平面细胞极性信号传导调节斑马鱼偏侧器官祖细胞的细胞粘附特性。

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摘要

Organ formation requires the precise assembly of progenitor cells into a functional multicellular structure. Mechanical forces probably participate in this process but how they influence organ morphogenesis is still unclear. Here, we show that Wnt11- and Prickle1a-mediated planar cell polarity (PCP) signalling coordinates the formation of the zebrafish ciliated laterality organ (Kupffer's vesicle) by regulating adhesion properties between organ progenitor cells (the dorsal forerunner cells, DFCs). Combined inhibition of Wnt11 and Prickle1a reduces DFC cell-cell adhesion and impairs their compaction and arrangement during vesicle lumen formation. This leads to the formation of a mis-shapen vesicle with small fragmented lumina and shortened cilia, resulting in severely impaired organ function and, as a consequence, randomised laterality of both molecular and visceral asymmetries. Our results reveal a novel role for PCP-dependent cell adhesion in coordinating the supracellular organisation of progenitor cells during vertebrate laterality organ formation.
机译:器官形成需要祖细胞精确组装成功能性多细胞结构。机械力可能参与了这个过程,但是它们如何影响器官形态尚不清楚。在这里,我们显示Wnt11和Prickle1a介导的平面细胞极性(PCP)信号通过调节器官祖细胞(背前突细胞,DFCs)之间的粘附特性来协调斑马鱼纤毛侧向器官(库普弗氏囊)的形成。联合抑制Wnt11和Prickle1a减少了DFC细胞间的粘附,并削弱了它们在囊泡腔形成过程中的紧缩和排列。这导致形成带有小碎片的管腔和缩短的纤毛的畸形囊泡,导致器官功能严重受损,并因此导致分子和内脏不对称性的随机侧向。我们的结果揭示了PCP依赖性细胞粘附在协调脊椎动物侧向器官形成过程中祖细胞的超细胞组织中的新作用。

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