PMID- 12874304 OWN - NLM STAT- MEDLINE DCOM- 20030826 LR - 20231105 IS - 0019-9567 (Print) IS - 1098-5522 (Electronic) IS - 0019-9567 (Linking) VI - 71 IP - 8 DP - 2003 Aug TI - Expression of cytokine and chemokine genes by human middle ear epithelial cells induced by influenza A virus and Streptococcus pneumoniae opacity variants. PG - 4289-96 AB - Real-time PCR and enzyme-linked immunosorbent assay were used to evaluate the ability of influenza A virus and Streptococcus pneumoniae opacity variants, either alone or in combination, to induce cytokine and chemokine genes in primary cultures of human middle ear epithelial (HMEE) cells. Following treatment with influenza A virus, the induction of gene expression, which occurred in a dose- and time-dependent manner, was strong for macrophage inflammatory protein 1 alpha (MIP-1 alpha) and MIP-1 beta; moderate for tumor necrosis factor alpha (TNF-alpha), interleukin-6 (IL-6), and IL-8; and weak for IL-1 beta and monocyte chemotactic peptide 1 (MCP-1). Except for TNF-alpha, all the gene products were detected in the cell culture supernatants. In contrast, infection of HMEE cells with S. pneumoniae alone induced low levels of mRNA expression of MIP-1 alpha and MIP-1 beta and did not significantly induce the transcription of the other cytokines and chemokines examined. However, both S. pneumoniae opacity variants increased mRNA expression of MIP-1 alpha, MIP-1 beta, IL-6, and MCP-1 in HMEE cells activated by a prior influenza A virus infection compared to levels in cells treated with either agent alone. Up-regulation of IL-6, IL-8, and MCP-1 mRNA expression and production by the virus in combination with opaque S. pneumoniae was two- to threefold higher than that induced by the virus combined with the transparent S. pneumoniae variant. These data indicate that the activation of HMEE cells by influenza A virus enhances the induction of cytokine and chemokine gene transcripts by S. pneumoniae and that this effect appears to be most pronounced when S. pneumoniae is in the opaque phase. FAU - Tong, H H AU - Tong HH AD - Division of Otologic Research, College of Medicine and Public Health, The Ohio State University, Columbus, Ohio 43210, USA. FAU - Long, J P AU - Long JP FAU - Shannon, P A AU - Shannon PA FAU - DeMaria, T F AU - DeMaria TF LA - eng GR - R01 DC003105/DC/NIDCD NIH HHS/United States GR - R01 DC3105-06/DC/NIDCD NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Infect Immun JT - Infection and immunity JID - 0246127 RN - 0 (Chemokine CCL2) RN - 0 (Chemokine CCL3) RN - 0 (Chemokine CCL4) RN - 0 (Chemokines) RN - 0 (Cytokines) RN - 0 (Interleukin-1) RN - 0 (Interleukin-6) RN - 0 (Interleukin-8) RN - 0 (Macrophage Inflammatory Proteins) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Cells, Cultured MH - Chemokine CCL2/genetics MH - Chemokine CCL3 MH - Chemokine CCL4 MH - Chemokines/*genetics MH - Cytokines/*genetics MH - Ear, Middle/cytology/immunology/virology MH - Epithelial Cells/immunology/virology MH - Gene Expression MH - Genetic Variation MH - Humans MH - Immunity, Innate MH - Influenza A virus/*pathogenicity MH - Interleukin-1/genetics MH - Interleukin-6/genetics MH - Interleukin-8/genetics MH - Macrophage Inflammatory Proteins/genetics MH - Otitis Media/etiology MH - RNA, Messenger/genetics/metabolism MH - Streptococcus pneumoniae/*genetics/*pathogenicity MH - Tumor Necrosis Factor-alpha/genetics PMC - PMC166016 EDAT- 2003/07/23 05:00 MHDA- 2003/08/27 05:00 PMCR- 2003/08/01 CRDT- 2003/07/23 05:00 PHST- 2003/07/23 05:00 [pubmed] PHST- 2003/08/27 05:00 [medline] PHST- 2003/07/23 05:00 [entrez] PHST- 2003/08/01 00:00 [pmc-release] AID - 0330 [pii] AID - 10.1128/IAI.71.8.4289-4296.2003 [doi] PST - ppublish SO - Infect Immun. 2003 Aug;71(8):4289-96. doi: 10.1128/IAI.71.8.4289-4296.2003.