Document Detail


Development of neural crest in Xenopus.
MedLine Citation:
PMID:  9891884     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The neural crest is a unique cell population among embryonic cell types, displaying properties of both ectodermal and mesodermal lineages. Most of the recent studies examining the neural crest have been performed in avian embryos. Only in the first half of this century were amphibians extensively used. We first summarize this important older source of information, reviewing studies made since the turn of the century. Due to the increasingly detailed in cellular and molecular knowledge of the early development of Xenopus laevis, the remainder of the review focuses on this species. We describe the route of migration and fate of the neural crest and propose a new model of neural crest induction in which prospective cells are induced independently of the neural plate by a double gradient of a morphogen that patterns the entire ectoderm. This model is also discussed in a more general context in connection with the dorsoventral patterning of the neural tube. Finally, we discuss some ideas concerning neural crest evolution and propose a novel hypothesis about its phylogenetic origin.
Authors:
R Mayor; R Young; A Vargas
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  Current topics in developmental biology     Volume:  43     ISSN:  0070-2153     ISO Abbreviation:  Curr. Top. Dev. Biol.     Publication Date:  1999  
Date Detail:
Created Date:  1999-04-13     Completed Date:  1999-04-13     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0163114     Medline TA:  Curr Top Dev Biol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  85-113     Citation Subset:  IM    
Affiliation:
Laboratorio de Biología del Desarrollo, Facultad de Ciencias, Universidad de Chile, Santiago, Chile.
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MeSH Terms
Descriptor/Qualifier:
Amphibians
Animals
Body Patterning
Cell Differentiation
Cell Movement
Ectoderm
Evolution
Gene Expression Regulation, Developmental*
Models, Biological
Neural Crest / embryology*
Xenopus laevis / embryology*,  genetics*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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