Expression of Fibroblast growth factor 19 (Fgf19) during chicken embryogenesis and eye development, compared with Fgf15 expression in the mouse.
The normal development of eyes relies on proper signaling through Fibroblast growth factor (FGF) receptors, but the source and identity of cognate ligands have remained largely unknown. We have found that Fgf19 is expressed in the developing chicken retina. In situ hybridization discloses dynamic expression patterns for Fgf19 in the optic vesicle, lens primordia and retinal horizontal cells. Overall expression pattern of Fgf19 during chicken embryogenesis was also examined: Fgf19 is expressed in the regions associated with cranial placodes induction, boundary regions of rhombomeres, somites, specific groups of neural cells in midbrain, hindbrain, and those derived from epibranchial placodes, and the apical ectodermal ridge of limb buds. Expression pattern of the Fgf19-orthologous gene Fgf15 was further examined in the mouse developing eye. Fgf15 is expressed in the optic vesicle, a subset of progenitor cells of neural retina, and emerging ganglion and amacrine cells during retinogenesis.
Department of Biological Science and Technology, Faculty of Engineering, The University of Tokushima, Minami-Jyosanjima, Tokushima 770-8506, Japan.
Hitomi
H
Kurose
Takaaki
T
Bito
Taro
T
Adachi
Miyuki
M
Shimizu
Sumihare
S
Noji
Hideyo
H
Ohuchi
D000818:Animals; D002642:Chick Embryo; D017931:DNA Primers / Q000737:chemistry; D018076:DNA, Complementary / Q000378:metabolism; D005123:Eye / Q000196:embryology*; D005346:Fibroblast Growth Factors / Q000096:biosynthesis*; D017403:In Situ Hybridization; D007908:Lens, Crystalline / Q000196:embryology; D008024:Ligands; D051379:Mice; D018613:Microscopy, Confocal; D008856:Microscopy, Fluorescence; D008969:Molecular Sequence Data; D012160:Retina / Q000196:embryology*; D013045:Species Specificity; D013997:Time Factors; D014018:Tissue Distribution
D017931:DNA Primers; D018076:DNA, Complementary; C117476:FGF19 protein, human; D008024:Ligands; C108526:fibroblast growth factor 15, mouse; D005346:Fibroblast Growth Factors