University of Cambridge-led researchers reported a targeted gene-delivery approach that calms lung inflammation during respiratory infection in mouse models by locally expressing immunomodulatory cytokines. The Science Immunology study used an adeno-associated virus cargo system (AAV6.2-CC10) to induce in situ production of IL-2, IL-1 receptor antagonist (IL-1RA), and IL-10 in lung epithelial cells. The work emphasized sustained local expression over weeks with no detectable peripheral immune-system deviation. By limiting systemic exposure, the approach is framed as a potential alternative to cytokine biologics that can have short half-lives and multi-organ risks. The preclinical results provide a mechanism-based platform direction for anti-inflammatory intervention post-viral infection, where prolonged inflammation is linked to downstream complications.