PMID- 12949243 OWN - NLM STAT- MEDLINE DCOM- 20031027 LR - 20190605 IS - 0741-5400 (Print) IS - 0741-5400 (Linking) VI - 74 IP - 3 DP - 2003 Sep TI - Lactobacilli and streptococci induce inflammatory chemokine production in human macrophages that stimulates Th1 cell chemotaxis. PG - 395-402 AB - Macrophages have a central role in innate-immune responses to bacteria. In the present work, we show that infection of human macrophages with Gram-positive pathogenic Streptococcus pyogenes or nonpathogenic Lactobacillus rhamnosus GG enhances mRNA expression of inflammatory chemokine ligands CCL2/monocyte chemoattractant protein-1 (MCP-1), CCL3/macrophage-inflammatory protein-1alpha (MIP-1alpha), CCL5/regulated on activation, normal T expressed and secreted, CCL7/MCP-3, CCL19/MIP-3beta, and CCL20/MIP-3alpha and CXC chemokine ligands CXCL8/interleukin (IL)-8, CXCL9/monokine induced by interferon-gamma (IFN-gamma), and CXCL10/IFN-inducible protein 10. Bacteria-induced CCL2, CCL7, CXCL9, and CXCL10 mRNA expression was partially dependent on ongoing protein synthesis. The expression of these chemokines and of CCL19 was dependent on bacteria-induced IFN-alpha/beta production. CCL19 and CCL20 mRNA expression was up-regulated by IL-1beta or tumor necrosis factor alpha (TNF-alpha), and in addition, IFN-alpha together with TNF-alpha further enhanced CCL19 gene expression. Synergy between IFN-alpha and TNF-alpha was also seen for CXCL9 and CXCL10 mRNA expression. Bacteria-stimulated macrophage supernatants induced the migration of T helper cell type 1 (Th1) cells, suggesting that in human macrophages, these bacteria can stimulate efficient inflammatory chemokine gene expression including those that recruit Th1 cells to the site of inflammation. Furthermore, L. rhamnosus-induced Th1 chemokine production could in part explain the proposed antiallergenic properties of this bacterium. FAU - Veckman, Ville AU - Veckman V AD - Department of Microbiology, National Public Health Institute, Helsinki, Finland. ville.veckman@ktl.fi FAU - Miettinen, Minja AU - Miettinen M FAU - Matikainen, Sampsa AU - Matikainen S FAU - Lande, Roberto AU - Lande R FAU - Giacomini, Elena AU - Giacomini E FAU - Coccia, Eliana M AU - Coccia EM FAU - Julkunen, Ilkka AU - Julkunen I LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Leukoc Biol JT - Journal of leukocyte biology JID - 8405628 RN - 0 (Chemokines) RN - 0 (RNA, Messenger) RN - 9008-11-1 (Interferons) SB - IM MH - Cell Movement MH - Cells, Cultured MH - Chemokines/*biosynthesis/genetics MH - *Chemotaxis, Leukocyte MH - Enzyme-Linked Immunosorbent Assay MH - Flow Cytometry MH - Gene Expression Regulation MH - Humans MH - Interferons/pharmacology MH - Lactobacillus/*physiology MH - Macrophages/metabolism/*microbiology MH - RNA, Messenger/analysis MH - Streptococcus pyogenes/*physiology MH - Th1 Cells/*immunology EDAT- 2003/09/02 05:00 MHDA- 2003/10/28 05:00 CRDT- 2003/09/02 05:00 PHST- 2003/09/02 05:00 [pubmed] PHST- 2003/10/28 05:00 [medline] PHST- 2003/09/02 05:00 [entrez] AID - 10.1189/jlb.0402212 [doi] PST - ppublish SO - J Leukoc Biol. 2003 Sep;74(3):395-402. doi: 10.1189/jlb.0402212.