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XB-ART-49331
Development August 1, 2014; 141 (16): 3153-8.
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Vangl-dependent planar cell polarity signalling is not required for neural crest migration in mammals.

Pryor SE , Massa V , Savery D , Andre P , Yang Y , Greene ND , Copp AJ .


Abstract
The role of planar cell polarity (PCP) signalling in neural crest (NC) development is unclear. The PCP dependence of NC cell migration has been reported in Xenopus and zebrafish, but NC migration has not been studied in mammalian PCP mutants. Vangl2(Lp/Lp) mouse embryos lack PCP signalling and undergo almost complete failure of neural tube closure. Here we show, however, that NC specification, migration and derivative formation occur normally in Vangl2(Lp/Lp) embryos. The gene family member Vangl1 was not expressed in NC nor ectopically expressed in Vangl2(Lp/Lp) embryos, and doubly homozygous Vangl1/Vangl2 mutants exhibited normal NC migration. Acute downregulation of Vangl2 in the NC lineage did not prevent NC migration. In vitro, Vangl2(Lp/Lp) neural tube explants generated emigrating NC cells, as in wild type. Hence, PCP signalling is not essential for NC migration in mammals, in contrast to its essential role in neural tube closure. PCP mutations are thus unlikely to mediate NC-related birth defects in humans.

PubMed ID: 25038043
PMC ID: PMC4197537
Article link: Development
Grant support: [+]

Species referenced: Xenopus
Genes referenced: erbb3 plin1 vangl1 vangl2 wnt1


Article Images: [+] show captions
References [+] :
Carmona-Fontaine, Contact inhibition of locomotion in vivo controls neural crest directional migration. 2008, Pubmed, Xenbase