title: Localization of HB9 homeobox gene mRNA and protein during the early stages of chick feather development.
abstract: We performed in situ hybridization and immunohistochemical analysis of HB9 homeobox gene mRNA and protein, respectively, during chick feather development. HB9 mRNA was highly expressed in epidermal basal cells and dermal cells of the placodes and feather buds, but not in those of the interplacodes and interbud regions. HB9 protein was predominantly expressed in dermal cells of the symmetric short buds and decreased after the asymmetric bud stage when the feather bud had become elongated along the anterior-posterior (A-P) and proximal-distal (P-D) axis. These results suggest that HB9 gene is regulated in a spatiotemporal manner during feather development, and may be involved in early feather bud morphogenesis.
authors.affiliation: Department of Physiological Chemistry, Teikyo University, Sagamiko, Kanagawa, 199-0195, Japan. y-kosaka@pharm.teikyo-u.ac.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Kosaka
authors.forename: Y
authors.initials: Y
authors.lastname: Akimoto
authors.forename: A
authors.initials: A
authors.lastname: Obinata
authors.forename: H
authors.initials: H
authors.lastname: Hirano
mesh_terms: D000818:Animals; D016375:Antisense Elements (Genetics); D002455:Cell Division; D002642:Chick Embryo; D020405:Dermis / Q000166:cytology / Q000196:embryology / Q000378:metabolism; D000078404:Epidermal Cells; D004817:Epidermis / Q000196:embryology / Q000378:metabolism; D005241:Feathers / Q000196:embryology* / Q000378:metabolism*; D020869:Gene Expression Profiling; D018507:Gene Expression Regulation, Developmental; D018398:Homeodomain Proteins / Q000032:analysis* / Q000235:genetics*; D007150:Immunohistochemistry; D017403:In Situ Hybridization; D009024:Morphogenesis; D012333:RNA, Messenger / Q000032:analysis / Q000235:genetics; D014157:Transcription Factors / Q000032:analysis* / Q000235:genetics*
chemical_list: D016375:Antisense Elements (Genetics); D018398:Homeodomain Proteins; D012333:RNA, Messenger; D014157:Transcription Factors