부산대학교 도서관

Thymic stromal lymphopoietin (TSLP) is an interleukin (IL)-7-like cytokine produced by epithelial cells and triggers dendritic cell-mediated Th2 type allergic inflammatory responses. This study investigated whether Toll-like receptor (TLR) ligands, lipopolysaccharide (LPS) and poly-IC affect TSLP production in synovial fibroblasts. Enzyme-linked immunosorbent assay showed that LPS and poly-IC upregulated TSLP production in synovial fibroblasts obtained from patients with rheumatoid arthritis (RA) and osteoarthritis (OA). In addition, we found that nuclear factor (NF)-IoB inhibitor IMD-0354, dexamethasone, and interferon (IFN)-I3 inhibited the LPS- and poly-IC-induced TSLP production in RA and OA synovial fibroblasts. Thus, LPS and poly-IC can upregulate TSLP via a NF-IoB pathway in synovial fibroblasts, which is downregulated by dexamethasone and interferon (IFN)-I3. The current findings suggest that TSLP may be involved in the pathophysiology of inflammatory arthritis as well as allergic disease.