Abstract:The proinflammatory cytokine IL-1beta plays an important role in antifungal immunity; however, the mechanisms by which fungal pathogens trigger IL-1beta secretion are unclear. In this study we show that infection with Candida albicans is sensed by the Nlrp3 inflammasome, resulting in the subsequent release of IL-1beta. The ability of C. albicans to switch from a unicellular yeast form into a filamentous form is essential for activation of the Nlrp3 inflammasome, as C. albicans mutants incapable of forming hyphae were defective in their ability to induce macrophage IL-1beta secretion. Nlrp3-deficient mice also demonstrated increased susceptibility to infection with C. albicans, which is consistent with a key role for Nlrp3 in innate immune responses to the pathogen C. albicans.

Status: Published Type: Journal Article|Research Support, N.i.h., Extramural PubMed ID: 19684085

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