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NLRP12 reduces proliferation and inflammation of rheumatoid arthritis fibroblast-like synoviocytes by regulating the NF-κB and MAPK pathways

NLRP12 reduces proliferation and inflammation of rheumatoid arthritis fibroblast-like... Rheumatoid arthritis (RA) is a chronic systemic autoimmune disease characterized by abnormal synovial hyperplasia and the release of inflammatory cytokines. NLRP12 is a member of the family nod-like receptor (NLR) families that are activators of inflammation. However, the role of NLRP12 in fibroblast-like synoviocytes (FLSs) is still unclear. In the present study, we have investigated the role of NLRP12 in fibroblast-like synoviocytes (FLSs). The results demonstrated that NLRP12 overexpression inhibited proliferation and promoted cell apoptosis in RA-FLSs. Moreover, NLRP12 overexpression repressed inflammation by downregulation of IL-1β, TNF-α, IL-6, IFN-γ and MCP-1 production and upregulation of IL-10 levels with knockdown of NLRP12 expression showing opposite effects. In addition, NLRP12 overexpression suppressed phosphorylation of JNK, ERK, p38 and NF-κB in RA-FLSs, whereas NLRP12 knockdown promoted phosphorylation of these proteins. In conclusion, these findings demonstrate that NLRP12 inhibits proliferation and inflammation of RA-FLSs via the regulation of the NF-κB and MAPK signaling pathways, suggesting that NLRP12 might be a potential target for RA treatment. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png European Cytokine Network Springer Journals

NLRP12 reduces proliferation and inflammation of rheumatoid arthritis fibroblast-like synoviocytes by regulating the NF-κB and MAPK pathways

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Publisher
Springer Journals
Copyright
Copyright © JLE/Springer 2021
eISSN
1952-4005
DOI
10.1684/ecn.2021.0465
Publisher site
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Abstract

Rheumatoid arthritis (RA) is a chronic systemic autoimmune disease characterized by abnormal synovial hyperplasia and the release of inflammatory cytokines. NLRP12 is a member of the family nod-like receptor (NLR) families that are activators of inflammation. However, the role of NLRP12 in fibroblast-like synoviocytes (FLSs) is still unclear. In the present study, we have investigated the role of NLRP12 in fibroblast-like synoviocytes (FLSs). The results demonstrated that NLRP12 overexpression inhibited proliferation and promoted cell apoptosis in RA-FLSs. Moreover, NLRP12 overexpression repressed inflammation by downregulation of IL-1β, TNF-α, IL-6, IFN-γ and MCP-1 production and upregulation of IL-10 levels with knockdown of NLRP12 expression showing opposite effects. In addition, NLRP12 overexpression suppressed phosphorylation of JNK, ERK, p38 and NF-κB in RA-FLSs, whereas NLRP12 knockdown promoted phosphorylation of these proteins. In conclusion, these findings demonstrate that NLRP12 inhibits proliferation and inflammation of RA-FLSs via the regulation of the NF-κB and MAPK signaling pathways, suggesting that NLRP12 might be a potential target for RA treatment.

Journal

European Cytokine Network – Springer Journals

Published: Aug 11, 2021

Keywords: rheumatoid arthritis; NLRP12; proliferation; inflammation

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