title: Expression of different chemokines by human osteosarcoma cells in response to tumor necrosis factor-alpha.
abstract: We investigated the expression of different chemokines in the surnatants and inside the cells of four human osteosarcoma cell lines. HOS, U-2 OS, MG63 and Saos-2 cells were cultured for 24, 48, 72 hours both in basal conditions and after stimulus with TNF alpha. Human stromal cells were used as control. IL-8 and MCP-1 are present in higher concentration in the surnatants in contrast to RANTES which is present primarily inside the cells. IL-8 and MCP-1 are not totally expressed by all the human osteosarcoma cell lines in unstimulated conditions, but became detectable after TNF alpha treatment. In general, this cytokine stimulated the production and release of the three chemokines.
authors.affiliation: Laboratorio di Immunologia e Genetica, Istituto di Ricerca Codivilla Putti, I.O.R., Bologna, Italy.
authors.forename: B
authors.initials: B
authors.lastname: Grigolo
authors.forename: L
authors.initials: L
authors.lastname: Roseti
authors.forename: G
authors.initials: G
authors.lastname: Lisignoli
authors.forename: G
authors.initials: G
authors.lastname: Remiddi
authors.forename: A
authors.initials: A
authors.lastname: Facchini
mesh_terms: D002455:Cell Division / Q000187:drug effects; D018932:Chemokine CCL2 / Q000378:metabolism*; D018946:Chemokine CCL5 / Q000378:metabolism*; D006801:Humans; D016209:Interleukin-8 / Q000378:metabolism*; D014407:Tumor Cells, Cultured; D014409:Tumor Necrosis Factor-alpha / Q000494:pharmacology*
chemical_list: D018932:Chemokine CCL2; D018946:Chemokine CCL5; D016209:Interleukin-8; D014409:Tumor Necrosis Factor-alpha