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    A role for planar cell polarity during early endoderm morphogenesis

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    Author
    Miles, LB; Mizoguchi, T; Kikuchi, Y; Verkade, H
    Date
    2017-05-15
    Source Title
    Biology Open
    Publisher
    COMPANY OF BIOLOGISTS LTD
    University of Melbourne Author/s
    Verkade, Heather
    Affiliation
    Biochemistry and Molecular Biology
    Metadata
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    Document Type
    Journal Article
    Citations
    Miles, L. B., Mizoguchi, T., Kikuchi, Y. & Verkade, H. (2017). A role for planar cell polarity during early endoderm morphogenesis. BIOLOGY OPEN, 6 (5), pp.531-539. https://doi.org/10.1242/bio.021899.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/259018
    DOI
    10.1242/bio.021899
    Abstract
    The zebrafish endoderm begins to develop at gastrulation stages as a monolayer of cells. The behaviour of the endoderm during gastrulation stages is well understood. However, knowledge of the morphogenic movements of the endoderm during somitogenesis stages, as it forms a mesenchymal rod, is lacking. Here we characterise endodermal development during somitogenesis stages, and describe the morphogenic movements as the endoderm transitions from a monolayer of cells into a mesenchymal endodermal rod. We demonstrate that, unlike the overlying mesoderm, endodermal cells are not polarised during their migration to the midline at early somitogenesis stages. Specifically, we describe the stage at which endodermal cells begin to leave the monolayer, a process we have termed 'midline aggregation'. The planar cell polarity (PCP) signalling pathway is known to regulate mesodermal and ectodermal cell convergence towards the dorsal midline. However, a role for PCP signalling in endoderm migration to the midline during somitogenesis stages has not been established. In this report, we investigate the role for PCP signalling in multiple phases of endoderm development during somitogenesis stages. Our data exclude involvement of PCP signalling in endodermal cells as they leave the monolayer.

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