title: Heterogeneity among human nasopharyngeal carcinoma cell lines for inflammatory cytokines mRNA expression levels.
abstract: Using polymerase chain reaction (PCR), we confirmed the expression of interleukin-1 alpha (IL-1 alpha) by the human nasopharyngeal carcinoma (NPC) cell line C15 without contribution of either human IL-1 beta or mouse IL-1 alpha in the biological activity previously found in C15. However we showed that IL-1 alpha was not expressed in all NPCs. IL-1 beta and/or tumor necrosis factor (TNF)-alpha genes could also be activated, independently from the number of Epstein Barr Virus (EBV) copies harbored by the cells. Interestingly, the primary tumor C15 showed a profile of TNF-sensitive tumor while C17, C18 and C19 which were derived from metastasis have a typical profile of TNF-resistant cells. Furthermore, the inflammatory cytokines whose genes are classically induced by IL-1 and TNF were found expressed only in C17 and C19 suggesting another level of heterogeneity among NPCs.
authors.affiliation: Laboratoire de Biologie des Tumeurs Humaines, URA 1156 CNRS, Institut Gustave Roussy, Villejuif, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Mahé
authors.forename: K
authors.initials: K
authors.lastname: Hirose
authors.forename: B
authors.initials: B
authors.lastname: Clausse
authors.forename: S
authors.initials: S
authors.lastname: Chouaib
authors.forename: T
authors.initials: T
authors.lastname: Tursz
authors.forename: B
authors.initials: B
authors.lastname: Mariamé
mesh_terms: D000818:Animals; D001483:Base Sequence; D018932:Chemokine CCL2; D002630:Chemotactic Factors / Q000235:genetics; D016207:Cytokines / Q000235:genetics*; D015870:Gene Expression; D005814:Genes, Viral; D004854:Herpesvirus 4, Human / Q000235:genetics; D006801:Humans; D007375:Interleukin-1 / Q000235:genetics; D016209:Interleukin-8 / Q000235:genetics; D051379:Mice; D008819:Mice, Nude; D008969:Molecular Sequence Data; D009303:Nasopharyngeal Neoplasms / Q000378:metabolism*; D016133:Polymerase Chain Reaction; D012333:RNA, Messenger / Q000378:metabolism; D011956:Receptors, Cell Surface / Q000235:genetics; D018124:Receptors, Tumor Necrosis Factor; D014407:Tumor Cells, Cultured; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics
chemical_list: D018932:Chemokine CCL2; D002630:Chemotactic Factors; D016207:Cytokines; D007375:Interleukin-1; D016209:Interleukin-8; D012333:RNA, Messenger; D011956:Receptors, Cell Surface; D018124:Receptors, Tumor Necrosis Factor; D014409:Tumor Necrosis Factor-alpha