The NLRP3 inflammasome is critical for host defense against bacterial infection and is involved in the pathogenesis of various inflammatory diseases. The aggregation of its sensor protein NLRP3 is a pivotal checkpoint for inflammasome activation. Howev...
We screened a series of metabolites and found that L-Arg strongly inhibits NLRP3 inflammasome assembly in vitro. Mechanistically, L-Arg directly binds the D31 site of NLRP3, blocking NLRP3-ASC interaction and subsequent inflammasome assembly. This discovery establishes NLRP3 as a direct sensor fo...