Cytoneme-mediated transport of active Wnt5b/Ror2 complexes in zebrafish gastrulation

Cytoneme-mediated transport of active Wnt5b/Ror2 complexes in zebrafish gastrulation
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斑马鱼原肠胚形成过程中细胞因子介导的活性 Wnt5b/Ror2 复合物的转运

DOI:
10.1101/2022.04.07.487468
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发表时间:
2022
期刊:
--
影响因子:
--
通讯作者:
Zhang C
Zhang C
中科院分区:
--
文献类型:
--
作者:
Zhang C

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化学信号是细胞在胚胎中进行交流的主要方式。其基本原理是指一组产生配体的细胞和一组对这种信号做出反应的细胞,因为它们表达适当的受体。在斑马鱼胚胎中,Wnt5b与受体Ror2结合,触发Wnt/平面细胞极性(Wnt/PCP)信号通路,调节组织极性和细胞迁移。然而,目前还不清楚这种亲脂配体是如何从源细胞通过水胞外空间运输到靶组织的。这里我们显示Wnt5b和Ror2一起加载在长的突起上。激活的Wnt5b/Ror2复合体从这些细胞质传递到接收细胞,以触发Wnt/PCP信号,而不管细胞是否表达功能性受体。在组织水平上,我们发现激活的Wnt5b/Ror2依赖于细胞素的传播影响斑马鱼原肠胚中的会聚和延伸。
Chemical signaling is the primary means by which cells communicate in the embryo. The underlying principle refers to a group of ligand-producing cells and a group of cells that respond to this signal because they express the appropriate receptors. In the zebrafish embryo, Wnt5b binds to the receptor Ror2 to trigger the Wnt/Planar Cell Polarity (Wnt/PCP) signaling pathway to regulate tissue polarity and cell migration. However, it is still unclear how this lipophilic ligand is transported from the source cells through the aqueous extracellular space to the target tissue. Here we show that Wnt5b, together with Ror2, is loaded on long protrusions. The active Wnt5b/Ror2 complexes are handed over from these cytonemes to the receiving cell to trigger Wnt/PCP signaling, regardless of whether the cell expresses functional receptors. On the tissue level, we show that cytoneme-dependent spreading of active Wnt5b/Ror2 affects convergence and extension in the zebrafish gastrula.
发育中的细胞因子
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