Linked Life Data

14699580

Source:http://linkedlifedata.com/resource/pubmed/id/14699580

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2003-12-30
pubmed:abstractText
Members of the AP-2 transcription factor family have critical roles in many aspects of embryonic development. The zebrafish tfap2a mutant lockjaw (low) displays defects in skeletal and pigment cell derivatives of the neural crest. Here we show essential roles for tfap2a in subsets of embryonic cartilages and pigment cells. Defects in cartilage of the hyoid arch in low correlate with a loss of Hox group 2 gene expression and are suggestive of a transformation to a mandibular fate. In contrast, loss of joints in the mandibular arch and defects in certain types of pigment cells suggest a requirement for tfap2a independent of Hox regulation. Early melanophores do not develop in low mutants, and we propose that this results in part from a loss of kit function, leading to defects in migration, as well as kit-independent defects in melanophore specification. Iridophores are also reduced in low, in contrast to xanthophores, revealing a role for tfap2a in the development of pigment subpopulations. We propose a model of tfap2a function in the neural crest in which there are independent functions for tfap2a in specification of subpopulations of pigment cells and segmental patterning of the pharyngeal skeleton through the regulation of Hox genes. Developmental Dynamics 229:87-98, 2004.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1058-8388
pubmed:author
pubmed:copyrightInfo
Copyright 2003 Wiley-Liss, Inc.
pubmed:issnType
Print
pubmed:volume
229
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
87-98
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Skeletal and pigment cell defects in the lockjaw mutant reveal multiple roles for zebrafish tfap2a in neural crest development.
pubmed:affiliation
Department of Developmental and Cell Biology, University of California, Irvine, California, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't