title: c-fes expression in ontogenetic development and hematopoietic differentiation.
abstract: The c-fes protein (NCP92) is a tyrosine-specific protein kinase, capable of both autophosphorylation and phosphorylation of other substrates. We have analysed c-fes RNA expression in human/murine ontogenetic development and in homogeneous populations of embryonic and adult human hematopoietic cells. c-fes expression has been observed in rapidly proliferating embryonic-fetal tissues originating from different germinal layers, but not in adult non-hematopoietic tissues. In particular, a spatially and temporally regulated transcription was observed in the central nervous system and in developing cartilage. Expression in hematopoietic cells was evaluated in progenitors purified from embryonic-fetal liver and adult peripheral blood differentiating gradually and specifically along the erythroid or granulomonocytic lineage. In both embryonic and adult hematopoietic cells c-fes was abundantly expressed in undifferentiated progenitors of both lineages, as well as in differentiated granulomonocytic precursors, but not in erythroblasts. This expression pattern correlates with that of GM-CSF and in part IL-3 receptors (Testa et al., 1993 and our unpublished results). Altogether, these results suggest a possible role for c-fes in signal transduction, in both embryonic non-hematopoietic tissues and embryonic/adult hematopoietic cells, following interaction of growth factors with their tyrosine-kinase negative receptors (i.e., GM-CSF and IL-3 receptors in adult hematopoietic cells and other hypothetical growth factor(s) receptors during embryonic development.
authors.affiliation: Department of Hematology-Oncology, Istituto Superiore di Sanità, Rome, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Carè
authors.forename: G
authors.initials: G
authors.lastname: Mattia
authors.forename: E
authors.initials: E
authors.lastname: Montesoro
authors.forename: I
authors.initials: I
authors.lastname: Parolini
authors.forename: G
authors.initials: G
authors.lastname: Russo
authors.forename: M P
authors.initials: MP
authors.lastname: Colombo
authors.forename: C
authors.initials: C
authors.lastname: Peschle
mesh_terms: D000328:Adult; D000818:Animals; D001483:Base Sequence; D015152:Blotting, Northern; D002454:Cell Differentiation / Q000235:genetics; D002478:Cells, Cultured; D017931:DNA Primers; D004622:Embryo, Mammalian / Q000378:metabolism; D005333:Fetus / Q000378:metabolism; D006412:Hematopoietic Stem Cells / Q000166:cytology / Q000378:metabolism*; D006801:Humans; D017403:In Situ Hybridization; D008297:Male; D051379:Mice; D008969:Molecular Sequence Data; D011505:Protein-Tyrosine Kinases / Q000235:genetics*; D011518:Proto-Oncogene Proteins / Q000235:genetics*; D051578:Proto-Oncogene Proteins c-fes; D012333:RNA, Messenger / Q000378:metabolism
chemical_list: D017931:DNA Primers; D011518:Proto-Oncogene Proteins; D012333:RNA, Messenger; D011505:Protein-Tyrosine Kinases; C496645:FES protein, human; C496646:Fes protein, mouse; D051578:Proto-Oncogene Proteins c-fes