ArticleClinical and experimental immunology2025
Engaging PD-1 rescuesregulatory T cell function and inhibits inflammatory T cells in rheumatoid arthritis.
Article in Clinical and experimental immunology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- The IDO1/AhR-HIF-1α metabolic axis: ARNT competition as a central antagonistic switch in autoimmune pathogenesis.Frontiers in immunology · 2026Review
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11 authors.
Funding
Abstract
backgroundDespite their synovial enrichment, regulatory T cells (Treg) fail to alleviate the joint inflammation in rheumatoid arthritis (RA). This indicates their functional impairment in the synovial milieu of RA patients.
resultsHere, we demonstrate that a deficit in the PD-1 pathway incapacitates the synovial Treg cells, and engaging programmed cell death protein-1 (PD-1) restores their suppressive function (interleukin 10, transforming growth factor beta secretion), which in turn suppresses the synovial inflammatory T cells (IFN-γ+, IL-17+ TNF-α+). We also showed that a deficit in programmed death ligand-1 expression on RA synovial macrophages contributes to impaired Treg cell function.
conclusionRejuvenating synovial Treg cell function via PD-1 engagement may be a potential strategy to ameliorate the synovial inflammation in RA patients.
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