The PANoptotic mosaic of rheumatoid arthritis: epitranscriptomic regulation, systemic relays, and precision...

The persistence of difficult-to-treat rheumatoid arthritis (D2T-RA) underscores a fundamental disruption in synovial cell death homeostasis, transcending the limitations of conventional cytokine blockade. By integrating multi-omics, molecular imaging, and bio-responsive nanotechnologies, we characterized the PANoptosis framework-a synergistic programmed cell death (PCD) system converging apoptosis, pyroptosis, and necroptosis. Our findings reveal that environmental stressors perturb cellular antioxidant defenses, thereby precipitating PANoptosome assembly through mechanisms such as autoantibody-mediated biophysical triggers. Systemic crosstalk, spanning lung-derived inflammatory signals and gut metabolic rheostats, orchestrates synovial fate. Mechanistically, epitranscriptomic RNA methylation and dysregulated molecular switches within the PANoptosome drive inflammatory flares, while distal effects involve extracellular vesicle-mediated cartilage damage. Therapeutic interventions, such as bio-responsive nanoplatforms, effectively reprogram death modes toward inflammatory resolution. We conclude that PANoptosis is a central driver of RA pathogenesis, and its precision targeting via "death-mode editing" represents a paradigm shift from broad immunosuppression toward curative interventions. This work establishes a comprehensive PANoptic model and identifies actionable therapeutic avenues, offering transformative potential for the clinical management of RA.