Zebrafish Cdx4 regulates neural crest cell specification and migratory behaviors in the posterior body.

Autor: Rocha M; Committee on Development, Regeneration & Stem Cell Biology, The University of Chicago, Chicago, IL, 60637, USA., Kushkowski E; Committee on Development, Regeneration & Stem Cell Biology, The University of Chicago, Chicago, IL, 60637, USA., Schnirman R; Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, IL, 60637, USA., Booth C; Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, IL, 60637, USA., Singh N; Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, IL, 60637, USA., Beadell A; Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, IL, 60637, USA; Department of Chemistry, The University of Chicago, Chicago, IL, 60637, USA., Prince VE; Committee on Development, Regeneration & Stem Cell Biology, The University of Chicago, Chicago, IL, 60637, USA; Department of Organismal Biology and Anatomy, The University of Chicago, Chicago, IL, 60637, USA. Electronic address: vprince@uchicago.edu.
Jazyk: angličtina
Zdroj: Developmental biology [Dev Biol] 2021 Dec; Vol. 480, pp. 25-38. Date of Electronic Publication: 2021 Aug 11.
DOI: 10.1016/j.ydbio.2021.08.002
Abstrakt: The neural crest (NC) is a transient multipotent cell population that migrates extensively to produce a remarkable array of vertebrate cell types. NC cell specification progresses in an anterior to posterior fashion, resulting in distinct, axial-restricted subpopulations. The anterior-most, cranial, population of NC is specified as gastrulation concludes and neurulation begins, while more posterior populations become specified as the body elongates. The mechanisms that govern development of the more posterior NC cells remain incompletely understood. Here, we report a key role for zebrafish Cdx4, a homeodomain transcription factor, in the development of posterior NC cells. We demonstrate that cdx4 is expressed in trunk NC cell progenitors, directly binds NC cell-specific enhancers in the NC GRN, and regulates expression of the key NC development gene foxd3 in the posterior body. Moreover, cdx4 mutants show disruptions to the segmental pattern of trunk NC cell migration due to loss of normal leader/follower cell dynamics. Finally, using cell transplantation to generate chimeric specimens, we show that Cdx4 does not function in the paraxial mesoderm-the environment adjacent to which crest migrates-to influence migratory behaviors. We conclude that cdx4 plays a critical, and likely tissue autonomous, role in the establishment of trunk NC migratory behaviors. Together, our results indicate that cdx4 functions as an early NC specifier gene in the posterior body of zebrafish embryos.
Competing Interests: Declaration of competing interest The authors declare no competing financial interests.
(Copyright © 2021 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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