title: Effect of vitamin A on chemotactic and chemoinvasive behaviour of an osteosarcoma cell line.
abstract: Vitamin A is known to be able to modulate cell growth and differentiation and to act as an inhibitor of the process of carcinogenesis in some experimental models. Here we have studied the effect of different concentrations of vitamin A on chemotactic and chemoinvasive behaviour of a metastatic osteosarcoma cell line. The cell proliferation was partially inhibited in the presence of 10(-5) M retinol after 4 days of incubation. Retinol effect on chemotactic and chemoinvasive activity of osteosarcoma cells seemed to be dose-dependent. The highest retinol concentration used (10(-5) M) had an inhibitory effect on migratory and invasive cell response. Lower retinol concentrations seemed to be able to enhance (10(-8) M) both chemotactic and chemoinvasive activity of osteosarcoma cells. Chemotaxis and chemoinvasion assays provide rapid and quantitative tools to study the "in vitro" behaviour of metastatic cells. Furthermore, they represent a mean to screen for drugs, hormones and other substances able to alter the metastatic phenotype.
authors.affiliation: Istituto di Istologia ed Embriologia Generale, Università degli Studi di Genova.
authors.forename: L
authors.initials: L
authors.lastname: Ferreri-Santi
authors.forename: C
authors.initials: C
authors.lastname: Agostacchio
authors.forename: C
authors.initials: C
authors.lastname: Rosellini
authors.forename: A M
authors.initials: AM
authors.lastname: Casali
authors.forename: M
authors.initials: M
authors.lastname: Percario
authors.forename: P
authors.initials: P
authors.lastname: Visconti
authors.forename: S
authors.initials: S
authors.lastname: Carlone
authors.forename: S
authors.initials: S
authors.lastname: Parodi
authors.forename: G
authors.initials: G
authors.lastname: Allavena
mesh_terms: D002633:Chemotaxis / Q000187:drug effects*; D006801:Humans; D009361:Neoplasm Invasiveness; D012516:Osteosarcoma / Q000473:pathology*; D014407:Tumor Cells, Cultured / Q000187:drug effects; D014801:Vitamin A / Q000494:pharmacology*
chemical_list: D014801:Vitamin A