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Inhibition of METTL3 Alleviates NLRP3 Inflammasome Activation via Increasing Ubiquitination of NEK7

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机构: [1]State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases West China Hospital of Stomatology Sichuan University Chengdu 610041, China [2]Department of Prosthodontics Shanghai Ninth People’sHospital Shanghai Jiao Tong University School of Medicine College of Stomatology NationalCenter for Stomatology National Clinical ResearchCenter for Oral Diseases Shanghai Key Laboratory of Stomatology Shanghai Research Institute of Stomatology Shanghai Jiao Tong University Shanghai 200011, China [3]Henan Eye Institute Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science Henan Provincial People’s Hospital People’s Hospital of Zhengzhou University People’s Hospital of Henan University Zhengzhou 450003, China [4]State Key Laboratory of Biotherapy and Cancer Center West China Hospital Sichuan University Chengdu, Sichuan 610041, China [5]Shanghai Engineering Research Center of Tooth Restoration and Regeneration & Tongji Research Institute of Stomatology & Department of oral implantology Stomatological Hospital and Dental School Tongji University Shanghai 200072, China [6]Department of Oral Biology Faculty of Dentistry Mahidol University Bangkok 10400, Thailand
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关键词: m6A modification METTL3 periodontitis pyroptosis small-molecule inhibitor

摘要:
N6-methyladenosine (m6A) modification, installed by METTL3-METTL14 complex, is abundant and critical in eukaryotic mRNA. However, its role in oral mucosal immunity remains ambiguous. Periodontitis is a special but prevalent infectious disease characterized as hyperinflammation of oral mucosa and bone resorption. Here, it is reported that genetic deletion of Mettl3 alleviates periodontal destruction via suppressing NLRP3 inflammasome activation. Mechanistically, the stability of TNFAIP3 (also known as A20) transcript is significantly attenuated upon m6A modification. When silencing METTL3, accumulated TNFAIP3 functioning as a ubiquitin-editing enzyme facilitates the ubiquitination of NEK7 [NIMA (never in mitosis gene a)-related kinase 7], and subsequently impairs NLRP3 inflammasome assembly. Furtherly, Coptisine chloride, a natural small-molecule, is discovered as a novel METTL3 inhibitor and performs therapeutic effect on periodontitis. The study unveils a previously unknown pathogenic mechanism of METTL3-mediated m6A modifications in periodontitis and indicates METTL3 as a potential therapeutic target.© 2024 The Authors. Advanced Science published by Wiley‐VCH GmbH.

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出版当年[2023]版:
大类 | 1 区 材料科学
小类 | 1 区 化学:综合 1 区 材料科学:综合 2 区 纳米科技
最新[2023]版:
大类 | 1 区 材料科学
小类 | 1 区 化学:综合 1 区 材料科学:综合 2 区 纳米科技
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第一作者机构: [1]State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases West China Hospital of Stomatology Sichuan University Chengdu 610041, China [2]Department of Prosthodontics Shanghai Ninth People’sHospital Shanghai Jiao Tong University School of Medicine College of Stomatology NationalCenter for Stomatology National Clinical ResearchCenter for Oral Diseases Shanghai Key Laboratory of Stomatology Shanghai Research Institute of Stomatology Shanghai Jiao Tong University Shanghai 200011, China
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