MNS Induces Antiviral Protection and Suppresses Inflammation

Inhibiting viral replication and limiting NF-kB-driven inflammation simultaneously is essential for better antiviral therapy, highlighting the urgent need for a single agent that achieves both functions. Here, we reported MNS, a selective c-Met inhibitor, induced a robust antiviral state and inhibited NF-kB-mediated inflammation. The dual functions blocked replication of diverse RNA viruses (VSV, EMCV, MHV) and DNA viruses (HSV-1, VACV) and reduced systemic cytokine levels (Il1b, Il6, Tnfa) in vitro and in vivo. Mechanistically, we identified NVP reprogrammed inflammation-related loci by modulating both gene expression and chromatin accessibility, and chaetocin inhibition of H3K9 methylation reversed its antiviral activity. These findings unveil MNS as a promising host-directed agent that simultaneously limits viral propagation and reduces inflammation, and suggest repurposing MNS as a broad-spectrum antiviral.