title: Expression cloning, developmental expression and chromosomal localization of fibroblast growth factor-8.
abstract: A mouse testis cDNA library in lambda pCEV27 eukaryotic expression vector was transfected in NIH3T3 fibroblasts and several transformed foci were identified. A plasmid with high-titered focus forming activity was rescued from one of these transformants. Structural analysis of this cDNA predicted a protein identical to androgen induced growth factor (AIGF), recently identified as the eighth member of the fibroblast growth factor (FGF) family. A 1.6 kilobasepair transcript of the FGF-8 gene was detected in testis but not in other adult tissues analysed. During development, expression of FGF-8 was restricted to embryonic days 9 through 13 suggesting that the growth factor plays a role during a discrete stage of mouse embryogenesis. An exon-containing genomic clone of human FGF-8 was isolated and structural comparisons indicated that the gene structure of this region is highly conserved among the FGF genes. Using a panel of human-rodent somatic cell hybrids, the FGF-8 gene was localized to human chromosome 10.
authors.affiliation: Laboratory of Cellular and Molecular Biology, National Cancer Institute, Bethesda, Maryland 20892, USA.
authors.forename: M V
authors.initials: MV
authors.lastname: Lorenzi
authors.forename: J E
authors.initials: JE
authors.lastname: Long
authors.forename: T
authors.initials: T
authors.lastname: Miki
authors.forename: S A
authors.initials: SA
authors.lastname: Aaronson
mesh_terms: D016475:3T3 Cells; D000818:Animals; D001483:Base Sequence; D002874:Chromosome Mapping; D002898:Chromosomes, Human, Pair 8 / Q000235:genetics*; D018076:DNA, Complementary / Q000737:chemistry*; D051524:Fibroblast Growth Factor 8; D005346:Fibroblast Growth Factors; D006133:Growth Substances / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification*; D006801:Humans; D008297:Male; D051379:Mice; D008969:Molecular Sequence Data; D009363:Neoplasm Proteins / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification*; D016366:Open Reading Frames; D012333:RNA, Messenger / Q000302:isolation & purification*; D013737:Testis / Q000737:chemistry / Q000196:embryology
chemical_list: D018076:DNA, Complementary; C496456:FGF8 protein, human; C496457:Fgf8 protein, mouse; D006133:Growth Substances; D009363:Neoplasm Proteins; D012333:RNA, Messenger; D051524:Fibroblast Growth Factor 8; D005346:Fibroblast Growth Factors