Macrophages as programmable integrators of disease tolerance across lifespan.

Macrophages act as programmable integrators of disease tolerance, with age-related reconfiguration of tolerance networks affecting tissue protection and pathology.

• Why it matters: Understanding how tissue function preservation influences clinical outcomes is crucial, as it complements pathogen elimination strategies. The aging process alters the balance of tissue-protective versus pathological responses, impacting disease tolerance.
• What they did: The study highlights macrophages as key regulators of multicellular tolerance networks that are progressively reconfigured with age, and explores how mRNA vaccines and MDA5 signaling modulation may transiently engage these pathways.
• The result: Findings suggest that targeting macrophage pathways could enable clinical interventions to enhance disease tolerance, potentially improving tissue preservation across the lifespan.