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  • Title: Tannic acid inhibits NLRP3 inflammasome-mediated IL-1β production via blocking NF-κB signaling in macrophages.
    Author: Song D, Zhao J, Deng W, Liao Y, Hong X, Hou J.
    Journal: Biochem Biophys Res Commun; 2018 Sep 18; 503(4):3078-3085. PubMed ID: 30126633.
    Abstract:
    The NLRP3 inflammasome rapidly responds to many infections and stress signals and is involved in the pathogenesis of numerous inflammatory disease processes. Tannic acid plays a role in antioxidant, antifungal and antitumor activities. Here, we reported that tannic acid inhibited NLRP3 inflammasome activation by blocking NF-κB signaling to suppress IL-1β secretion. We found that the BMDMs (bone marrow-derived macrophages cells) pre-treated with tannic acid blocked caspase-1 cleavage and inhibited IL-1β secretion in a NLRP3-dependent manner, and suppressed NF-κB signaling activation by inhibiting NF-κB/P65 nuclear localization, suggesting that tannic acid inhibited NLRP3 inflammasome activation. These investigations revealed that tannic acid inhibited NLRP3 inflammasome activation via blocking NF-κB signaling in macrophages, providing us with evidence that tannic acid may be a potent inhibitor for NLRP3-driven diseases.
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