Posterior Wnts Have Distinct Roles in Specification and Patterning of the Planarian Posterior Region

Posterior Wnts Have Distinct Roles in Specification and Patterning of the Planarian Posterior Region
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后 Wnt 在涡虫后部区域的规范和图案化中具有独特的作用

DOI:
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发表时间:
2015
影响因子:
5.6
通讯作者:
T. Adell
T. Adell
中科院分区:
生物学2区
文献类型:
--
作者:
Miquel Sureda;E. Pascual;T. Adell

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wnt信号通路是一种细胞间通讯机制,在细胞命运、组织模式和区域身份的特化中起重要作用。β连环蛋白依赖性信号指定了在新组织再生期间和正常稳态期间的涡虫的AP(前后)轴。因此,四个wnt(后wnt)在中央和后部区域的涡虫以嵌套的方式表达。我们已经分析了每个后部wnt的具体作用,以及它们之间可能的合作,在指定和模式化的涡虫中央和后部地区。我们发现,每个后部wnt发挥不同的作用,在重新规范和维护的中央和后部的Planarian区域,并整合不同的wnt信号(βcatenin依赖和独立)的基础上的AP轴的模式,从中央区域的尾巴的尖端。基于这些发现和文献数据,我们提出了一个模式化的涡虫AP轴。
The wnt signaling pathway is an intercellular communication mechanism essential in cell-fate specification, tissue patterning and regional-identity specification. A βcatenin-dependent signal specifies the AP (Anteroposterior) axis of planarians, both during regeneration of new tissues and during normal homeostasis. Accordingly, four wnts (posterior wnts) are expressed in a nested manner in central and posterior regions of planarians. We have analyzed the specific role of each posterior wnt and the possible cooperation between them in specifying and patterning planarian central and posterior regions. We show that each posterior wnt exerts a distinct role during re-specification and maintenance of the central and posterior planarian regions, and that the integration of the different wnt signals (βcatenin dependent and independent) underlies the patterning of the AP axis from the central region to the tip of the tail. Based on these findings and data from the literature, we propose a model for patterning the planarian AP axis.
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