title: Immunophenotypic analysis of human gingival fibroblasts and its regulation by Granulocyte-Macrophage Colony-Stimulating Factor (GM-CSF).
abstract: BACKGROUND
  The aim of the present study was to perform an immunophenotypic analysis of human gingival fibroblast cells and its eventual modulation by Granulocyte-Macrophage Colony-Stimulating Factor (GM-CSF).
  
  
  METHODS
  Gingival fibroblasts were derived from gingival biopsy of 15 healthy subjects. The presence of fibroblast cells in culture and the absence of epithelial cells was performed with fluorescence microscopy using vimentin and cytokeratin markers, respectively. Molecular expression of gingival fibroblast cell membrane was carried out with monoclonal antibodies by flow cytometry analysis. Human recombinant GM-CSF at the concentration of 200 ng/ml was used for the in vitro stimulation of gingival fibroblasts. Statistical analysis was performed using the Student "t"-test.
  
  
  RESULTS
  Human gingival fibroblasts express a wide surface molecular panel including mainly CD59, CD99, CD9, CD95, CD55, CD63, CD26, CD117, CD71 and CD86. The GM-CSF seems to regulate the CD49B expression positively and the CD40 and CD103 expression negatively.
  
  
  CONCLUSIONS
  Results show that GM-CSF is able to modulate the in vitro expression of some membrane molecules of gingival fibroblasts and therefore it may regulate, in vivo, peculiar specific biological functions of gingival tissue.
authors.affiliation: L. Califano Department of Cell and Molecule Biology and Pathology, Federico II University of Naples, Naples, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Di Domenico
authors.forename: L
authors.initials: L
authors.lastname: Del Vecchio
authors.forename: L
authors.initials: L
authors.lastname: Postiglione
authors.forename: L
authors.initials: L
authors.lastname: Ramaglia
mesh_terms: D015703:Antigens, CD / Q000096:biosynthesis*; D002478:Cells, Cultured; D005347:Fibroblasts / Q000145:classification / Q000276:immunology*; D005881:Gingiva / Q000276:immunology*; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000502:physiology*; D006801:Humans; D016130:Immunophenotyping
chemical_list: D015703:Antigens, CD; D016178:Granulocyte-Macrophage Colony-Stimulating Factor