Dishevelled mediates ephrinB1 signalling in the eye field through the planar cell polarity pathway
| Autor: | Ira O. Daar, Kathleen Soria, Hyun-Shik Lee, Sally A. Moody, Kathryn B. Moore, Yong-Sik Bong |
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| Rok vydání: | 2005 |
| Předmět: |
Field (physics)
Dishevelled Proteins Xenopus Ephrin-B1 Xenopus Proteins Biology Retina Xenopus laevis chemistry.chemical_compound Cell Movement Cell polarity medicine Animals Planar cell polarity pathway Molecular Biology Adaptor Proteins Signal Transducing chemistry.chemical_classification Stem Cells Cell Polarity Retinal Cell Biology Phosphoproteins biology.organism_classification Hedgehog signaling pathway Dishevelled Cell biology Pleckstrin homology domain Signalling medicine.anatomical_structure chemistry Signal transduction Signal Transduction Developmental Biology |
| Zdroj: | Nature Cell Biology. 8:55-63 |
| ISSN: | 1476-4679 1465-7392 |
| DOI: | 10.1038/ncb1344 |
| Popis: | An important step in retinal development is the positioning of progenitors within the eye field where they receive the local environmental signals that will direct their ultimate fate. Recent evidence indicates that ephrinB1 functions in retinal progenitor movement, but the signalling pathway is unclear. We present evidence that ephrinB1 signals through its intracellular domain to control retinal progenitor movement into the eye field by interacting with Xenopus Dishevelled (Xdsh), and by using the planar cell polarity (PCP) pathway. Blocking Xdsh translation prevents retinal progeny from entering the eye field, similarly to the morpholino-mediated loss of ephrinB1 (ref. 2). Overexpression of Xdsh can rescue the phenotype induced by loss of ephrinB1, and this rescue (as well as a physical association between Xdsh and ephrinB1) is completely dependent on the DEP (Dishevelled, Egl-10, Pleckstrin) domain of Xdsh. Similar gain- and loss-of-function experiments suggest that Xdsh associates with ephrinB1 and mediates ephrinB1 signalling through downstream members of the PCP pathway during eye field formation. |
| Databáze: | OpenAIRE |
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