Fibroblast growth factor 23 and its receptors.
Fibroblast growth factor 23 (FGF23) is a circulating factor that plays critical roles in phosphate and vitamin D metabolism, as evidenced by the fact that FGF23 missense mutations cause autosomal dominant hypophosphatemic rickets (ADHR). Autosomal dominant hypophosphatemic rickets is characterized by hypophosphatemia with inappropriately normal 1,25-dihydroxyvitamin D concentrations, as well as bone pain, fracture and rickets. This phenotype parallels that of patients with tumor induced osteomalacia (TIO), X-linked hypophosphatemic rickets (XLH), and fibrous dysplasia (FD), in whom elevated serum FGF23 levels are often observed. The fibroblast growth factor receptors (FGFR1-4) play key roles in skeletal development, as well as in normal metabolic processes. Several FGFR isoforms that potentially mediate the activity of FGF23 have been implicated. In the short term, these findings will lead to further understanding of FGF23 function, and potentially in the long term, to targeted therapies in disorders of hypo- and hyperphosphatemia that involve FGF23.
Yu
Xijie
X
Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
White
Kenneth E
KE
D000818:Animals; D000089703:Fibroblast Growth Factor-23; D005346:Fibroblast Growth Factors / Q000235:genetics / Q000502:physiology*; D005357:Fibrous Dysplasia of Bone / Q000235:genetics; D006706:Homeostasis / Q000502:physiology*; D006801:Humans; D017674:Hypophosphatemia / Q000378:metabolism / Q000503:physiopathology; D020125:Mutation, Missense; D010018:Osteomalacia / Q000209:etiology; D010710:Phosphates / Q000378:metabolism*; D017468:Receptors, Fibroblast Growth Factor / Q000502:physiology*; D012279:Rickets / Q000378:metabolism; D014807:Vitamin D / Q000378:metabolism
C000717427:FGF23 protein, human; D010710:Phosphates; D017468:Receptors, Fibroblast Growth Factor; D014807:Vitamin D; D005346:Fibroblast Growth Factors; D000089703:Fibroblast Growth Factor-23