Synovial matrix turnover controls immune cell spatial patterning in inflammation resolution.

ABSTRACT: Immune-mediated inflammatory diseases remain plagued by poor treatment responses and lack curative therapies. Convergent findings suggest a role for the stromal compartment and extracellular matrix composition dysregulation. Using rheumatoid arthritis as a model, we define an analytical pipeline combining transcriptomic, proteomic and degradomic analysis to characterise disease activity-specific matrix perturbations. This revealed synergistic contributions from fibroblasts and myeloid cells to matrix composition, with fibroblast subsets defining distinct subsynovial niches through distinct matrix expression profiles. Transcriptional dysregulation of collagen VI was found to be a feature of RA activity, with collagen VI protein accumulation linked to remission-associated states. Spatial ana

SUBMITTER: Richard JB 

PROVIDER: S-EPMC12583461 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature