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Title

EGFR controls Drosophila tracheal tube elongation by intracellular trafficking regulation

AuthorsOlivares-Castiñeira, Ivette; Llimargas, Marta
Issue Date5-Jul-2017
PublisherPublic Library of Science
CitationPLoS Genetics 13(7): e1006882 (2017)
AbstractDevelopment is governed by a few conserved signalling pathways. Amongst them, the EGFR pathway is used reiteratively for organ and tissue formation, and when dysregulated can lead to cancer and metastasis. Given its relevance, identifying its downstream molecular machinery and understanding how it instructs cellular changes is crucial. Here we approach this issue in the respiratory system of Drosophila. We identify a new role for EGFR restricting the elongation of the tracheal Dorsal Trunk. We find that EGFR regulates the apical determinant Crb and the extracellular matrix regulator Serp, two factors previously known to control tube length. EGFR regulates the organisation of endosomes in which Crb and Serp proteins are loaded. Our results are consistent with a role of EGFR in regulating Retromer/WASH recycling routes. Furthermore, we provide new insights into Crb trafficking and recycling during organ formation. Our work connects cell signalling, trafficking mechanisms and morphogenesis and suggests that the regulation of cargo trafficking can be a general outcome of EGFR activation
Publisher version (URL)https://doi.org/10.1371/journal.pgen.1006882
URIhttp://hdl.handle.net/10261/174456
DOI10.1371/journal.pgen.1006882
ISSN1553-7390
E-ISSN1553-7404
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