Abstract
NLRP3 is an innate immune sensor contributing to the development of different diseases including monogenic autoinflammatory syndromes, gout, atherosclerosis, and Alzheimer’s disease. The molecule sulfonylurea MCC950 is a NLRP3 inflammasome inhibitor with potential clinical utility. However, the mechanism of action of MCC950 remains unknown. Here, we characterize the mechanism of action of MCC950 in both wild-type and autoinflammatory-related NLRP3 mutants, demonstrating that MCC950 closes the ‘open’ conformation of active NLRP3.
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