NLRP3 inflammasome activation promotes the development of allergic rhinitis via epithelium pyroptosis

Allergic rhinitis (AR) is a worldwide highly prevalent nasal inflammatory disease with elusive mechanisms about the regulation of innate immune response. The roles and mechanisms of NLRP3, a typical inflammasome, in AR development remain unclear. Here we investigate the roles of NLRP3 inflammasome a...

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Published inBiochemical and biophysical research communications Vol. 522; no. 1; pp. 61 - 67
Main Authors Yang, Zixuan, Liang, Caiquan, Wang, Tianyu, Zou, Qingyun, Zhou, Mengxia, Cheng, Yin, Peng, Hu, Ji, Zhenhua, Deng, Yue, Liao, Jianchun, Liu, Huanhai
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 29.01.2020
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Summary:Allergic rhinitis (AR) is a worldwide highly prevalent nasal inflammatory disease with elusive mechanisms about the regulation of innate immune response. The roles and mechanisms of NLRP3, a typical inflammasome, in AR development remain unclear. Here we investigate the roles of NLRP3 inflammasome activation in the development and progression of AR and try to uncover its potential mechanisms underlying. Wildtype and NLRP3 knockout mice were applied to construct the ovalbumin (OVA)-induced AR model. Caspase-1 specific inhibitor Belnacasan and inflammasome activator ATP were used for adjuvant stimulation of AR-model mice respectively. We found that the production of IL-1β and the activation of inflammasome were increased in both patients and mice with AR. NLRP3 deficiency markedly suppressed AR progression with reduced inflammatory response and epithelium pyroptosis in mice with AR. Furthermore, Caspase-1 inhibitor treatment in vivo ameliorated the development and progression of AR with favorable outcomes. Mechanistically, inflammation augments and nasal mucosa injury during AR were partially due to ASC-specks accumulation and subsequent cell pyroptosis. Our study reveals the previously unknown roles of NLRP3 inflammasome in promoting the development and progression of AR via enhancing inflammatory response and epithelium pyroptosis and thus provides a potential clue for allergic disease interventions. •NLRP3 inflammasome activation is enhanced in the nasal mucosa of both AR patients and AR mice.•NLRP3 deficiency or inflammasome specific inhibitor suppresses AR progression owing to reduced local inflammatory response and epithelium pyroptosis, independent on serum IgE alteration.•ASC-specks accumulation and epithelium pyroptosis in the nasal mucosa contribute to the development and progression of AR.
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ISSN:0006-291X
1090-2104
DOI:10.1016/j.bbrc.2019.11.031