The Role of Raf Kinase Inhibitor Protein in Rheumatoid Fibroblast-like Synoviocytes Invasiveness and Cytokine and Matrix Metalloproteinase Expression
- Authors
- Ahn, Joong Kyong; Hwang, Ji-Won; Bae, Eun-Kyung; Lee, Jaejoon; Jeon, Chan Hong; Koh, Eun-Mi; Cha, Hoon-Suk
- Issue Date
- Apr-2012
- Publisher
- Kluwer Academic/Plenum Publishers
- Keywords
- raf kinase inhibitor protein; rheumatoid arthritis; fibroblast-like synoviocytes; matrix metalloproteinase; cytokines
- Citation
- Inflammation, v.35, no.2, pp 474 - 483
- Pages
- 10
- Journal Title
- Inflammation
- Volume
- 35
- Number
- 2
- Start Page
- 474
- End Page
- 483
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/15274
- DOI
- 10.1007/s10753-011-9336-2
- ISSN
- 0360-3997
1573-2576
- Abstract
- Fibroblast-like synoviocytes (FLS) play an important role in the pathogenesis of rheumatoid arthritis. Raf kinase inhibitor protein (RKIP) negatively regulates the Raf/MEK/ERK and NF-kappa B pathway. The role of RKIP in rheumatoid FLS is unknown. The purpose of the present study was to investigate the function of RKIP in rheumatoid FLS. Rheumatoid FLS were transfected with either RKIP-expressing plasmids or RKIP small interfering RNA (siRNA). RKIP protein was detected in rheumatoid synovial tissue (ST) and FLS. RKIP overexpression significantly decreased IL-6 mRNA expression in TNF-alpha-stimulated rheumatoid FLS. RKIP overexpression also showed a decreased trend in IL-8, MMP-1, and MMP-3 mRNA expression in TNF-alpha-stimulated rheumatoid FLS. RKIP silencing resulted in significantly increased MMP-1 and MMP-3 mRNA expression in TNF-alpha-stimulated rheumatoid FLS. RKIP silencing also increased IL-6 and IL-8 mRNA expression in TNF-alpha-stimulated rheumatoid FLS, but this increase did not reach statistical significance. TNF-alpha-induced ERK and NF-kappa B activation was suppressed in FLS with RKIP overexpression. RKIP silencing resulted in a significantly higher invasion index in TNF-alpha-stimulated rheumatoid FLS compared to controls. These results suggest that RKIP might be a potential therapeutic target for rheumatoid arthritis.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Medicine > Department of Internal Medicine > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.