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Expression of avian glypican is developmentally regulated
Author(s) -
Niu Shi,
Antin Parker B.,
Akimoto Kaoru,
Morkin Eugene
Publication year - 1996
Publication title -
developmental dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.634
H-Index - 141
eISSN - 1097-0177
pISSN - 1058-8388
DOI - 10.1002/(sici)1097-0177(199609)207:1<25::aid-aja3>3.0.co;2-y
Subject(s) - biology , somite , mesoderm , apical ectodermal ridge , heart development , fibroblast growth factor , limb development , microbiology and biotechnology , anatomy , in situ hybridization , forebrain , ectoderm , receptor , embryogenesis , endocrinology , embryo , embryonic stem cell , genetics , gene expression , gene , central nervous system
An avian cDNA homologue of human and rat glypicans has been cloned from a stage 17 chicken heart cDNA library and used to analyze the distribution of this proteoglycan during development by Northern analysis and whole mount in situ hybridization. At stages 7–12, strong signals were detected in the cephalic region of the neural folds, rostral portion of paraxial mesoderm, and newly formed epithelial somites. At stages 20–25, strong expression was observed in the mantle zone of the telencephalon, the apical epidermal ridge and proximal region of developing limb. Transcripts also were found in the truncus arteriosus and arteriovenous‐canal region of the heart, but not in the myocardium. This distribution pattern suggests that the avian glypican may be involved in the morphogenesis of limb, somite, heart, and brain. The expression of glypican also overlaps FGFs in limb bud, FGF receptors in heart and somite, and NGF receptors in forebrain. The affinity of heparan sulfate proteoglycans for growth factors and the distribution of the avian glypican are consistent with a role for this molecule in growth factor‐mediated signals. © 1996 Wiley‐Liss, Inc.