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    Ulcerative colitis (UC) is a chronic inflammatory intestinal disease. Genetic susceptibility, gut microbiota and mucosal immune dysfunction play important roles in the pathogenesis and development of UC. We investigate the effect of Mist1 in model of colitis and its underlying mechanism. The expressions of Mist1 in patients with colitis tissue were up-regulated. Meanwhile, Mist1 mRNA and protein expressions in DSS-induced colitis mice model were also induced and Mist1 mRNA and protein expressions of LPS induced THP-1 cell were also up-regulated. we found Mist1 human protein promoted inflammation in DSS-induced colitis mice by NLRP3. So, we up-regulated Mist1 expression and over-expression of Mist1 promoted IL-1β and NLRP3 protein expression levels in vitro model. However, down-regulation of Mist1 suppressed IL-1β and NLRP3 protein expression levels in vitro model. Next, SNAI1 is a shooting point of Mist1 in the effects of Mist1 in colitis. The inhibition of SNAI1 reduced the effects of Mist1 on NLRP3 inflammasome in vitro model. Activation of SNAI1 induced the effects of Mist1 on NLRP3 inflammasome in vitro model. Lastly, anti-SNAI1 human protein lowered the effects of Mist1 human protein on NLRP3 inflammasome in DSS-induced colitis mice. We demonstrated that Mist1 promoted inflammation in colitis model via NLRP3 inflammasome by SNAI1, whereas the absence of these macrophages led to a significant improvement in colitis treatment. Copyright © 2021. Published by Elsevier GmbH.

    Citation

    Tao Wang, Wenxiang Liu, Chenyang Li, Guowei Si, Zhimin Liang, Jian Yin. Mist1 promoted inflammation in colitis model via K+-ATPase NLRP3 inflammasome by SNAI1. Pathology, research and practice. 2021 Aug;224:153511

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    PMID: 34214845

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