PMID- 17393416 OWN - NLM STAT- MEDLINE DCOM- 20070510 LR - 20220316 IS - 0004-3591 (Print) IS - 0004-3591 (Linking) VI - 56 IP - 4 DP - 2007 Apr TI - Up-regulation of stromal cell-derived factor 1 (CXCL12) production in rheumatoid synovial fibroblasts through interactions with T lymphocytes: role of interleukin-17 and CD40L-CD40 interaction. PG - 1076-86 AB - OBJECTIVE: Stromal cell-derived factor 1 (SDF-1) is a potent chemoattractant for memory T cells in inflamed rheumatoid arthritis (RA) synovium. This study was undertaken to investigate the effect of interleukin-17 (IL-17) and CD40-CD40L interaction on SDF-1 production in RA fibroblast-like synoviocytes (FLS). METHODS: Synovial fluid (SF) and serum levels of SDF-1 in RA patients were measured by enzyme-linked immunosorbent assay (ELISA). The SDF-1 produced by cultured RA FLS was evaluated by real-time polymerase chain reaction and ELISA after FLS were treated with IL-17 and inhibitors of intracellular signal molecules. The SDF-1 level was also determined after FLS were cocultured with T cells in the presence and absence of IL-17. RESULTS: Concentrations of SDF-1 in the sera and SF were higher in RA patients than in osteoarthritis patients, although the increase in the serum levels did not reach statistical significance. The production of SDF-1 in RA FLS was enhanced by IL-17 stimulation. This effect of IL-17 was blocked by inhibitors of phosphatidylinositol 3-kinase (PI 3-kinase), NF-kappaB, and activator protein 1 (AP-1). When FLS were cocultured with T cells, SDF-1 production was up-regulated, especially in the presence of IL-17, but FLS were inhibited by neutralizing anti-IL-17 and anti-CD40L antibodies. Addition of RA SF to cultured RA FLS significantly up-regulated SDF-1 messenger RNA expression, which was hampered by pretreatment with anti-IL-17 antibody. CONCLUSION: SDF-1 is overproduced in RA FLS, and IL-17 could up-regulate the expression of SDF-1 in RA FLS via pathways mediated by PI 3-kinase, NF-kappaB, and AP-1. Our findings suggest that inhibition of the interaction between IL-17 from T cells and SDF-1 in FLS may provide a new therapeutic approach in RA. FAU - Kim, Kyoung-Woon AU - Kim KW AD - Catholic University of Korea, and Department of Internal Medicine, Konkuk University Hospital, Seoul, Korea. FAU - Cho, Mi-La AU - Cho ML FAU - Kim, Hae-Rim AU - Kim HR FAU - Ju, Ji-Hyeon AU - Ju JH FAU - Park, Mi-Kyung AU - Park MK FAU - Oh, Hye-Jwa AU - Oh HJ FAU - Kim, Joon-Seok AU - Kim JS FAU - Park, Sung-Hwan AU - Park SH FAU - Lee, Sang-Heon AU - Lee SH FAU - Kim, Ho-Youn AU - Kim HY LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Arthritis Rheum JT - Arthritis and rheumatism JID - 0370605 RN - 0 (Antibodies, Blocking) RN - 0 (CD40 Antigens) RN - 0 (CXCL12 protein, human) RN - 0 (Chemokine CXCL12) RN - 0 (Chemokines, CXC) RN - 0 (Interleukin-17) RN - 147205-72-9 (CD40 Ligand) SB - IM MH - Adult MH - Aged MH - Antibodies, Blocking/pharmacology MH - Arthritis, Rheumatoid/genetics/*metabolism/pathology MH - CD4-Positive T-Lymphocytes/drug effects/*metabolism/pathology MH - CD40 Antigens/metabolism MH - CD40 Ligand/metabolism MH - Cell Survival/drug effects MH - Cells, Cultured MH - Chemokine CXCL12 MH - Chemokines, CXC/genetics/*metabolism MH - Coculture Techniques MH - Fibroblasts/metabolism/pathology MH - Humans MH - Interleukin-17/immunology/metabolism/pharmacology MH - Middle Aged MH - Stromal Cells/*metabolism MH - Synovial Fluid/cytology/*metabolism MH - Up-Regulation EDAT- 2007/03/30 09:00 MHDA- 2007/05/11 09:00 CRDT- 2007/03/30 09:00 PHST- 2007/03/30 09:00 [pubmed] PHST- 2007/05/11 09:00 [medline] PHST- 2007/03/30 09:00 [entrez] AID - 10.1002/art.22439 [doi] PST - ppublish SO - Arthritis Rheum. 2007 Apr;56(4):1076-86. doi: 10.1002/art.22439.