ArticleScience advances2026
P2X7R of synovial fibroblasts is a potential therapeutic target associated with refractory rheumatoid arthritis.
Article in Science advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Antagonism of P2X7 receptor function in synovial fibroblasts is a potential therapeutic manipulation in rheumatoid arthritis.Purinergic signalling · 2026Article
- Targeting P2X7R on synovial fibroblasts to treat refractory RA.Nature reviews. Rheumatology · 2026Article
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Authors and funding
25 authors.
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Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by persistent synovitis. Synovial fibroblasts (SF) are the predominant cellular components in the inflamed synovium. Recent studies have shown increased expression of P2X7 receptor (P2X7R) in RA SF. However, its precise expression patterns and its contribution to inflammatory arthritis remain unclear. We demonstrate that P2X7R is robustly expressed in RA synovium, correlating with increased synovitis and systemic inflammation. Single-cell transcriptome analysis indicated that P2X7R was enriched in specific SF associated with refractory RA. Then, we applied a highly selective human P2X7R antagonist, EVT-401, which promoted apoptosis and induced cell cycle arrest in RA SF, reduced the production of proinflammatory and joint-destructive mediators, and mitigated aggressive phenotypes. Furthermore, we demonstrated that EVT-401 markedly reduced synovial inflammation and arthritis severity in a nonhuman primate model of autoimmune arthritis. Together, these findings suggest that P2X7R is involved in synovial inflammation and its inhibition may represent a potential therapeutic strategy for refractory RA.
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