高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (12): 20220476.doi: 10.7503/cjcu20220476

• 研究论文 • 上一篇    下一篇

蒙脱石负载氧化铈纳米酶用于克罗恩肠炎治疗

陈夕雯1,程超群1,程远1,赵升1,魏辉1,2   

  1. 1.南京大学现代工程与应用科学学院,生物医学工程系,南京固体微结构国家实验室,江苏省人工功能材料重点实验室, 南京 210023
    2.南京大学化学化工学院,化学与生物医药创新研究院,生命科学分析化学国家重点实验室和配位化学国家重点实验室,南京 210023
  • 收稿日期:2022-04-11 出版日期:2022-12-10 发布日期:2022-08-24
  • 作者简介:第一联系人:共同第一作者.
  • 基金资助:
    国家重点研究发展计划项目(2019YFA0709200);国家自然科学基金(21874067);中国科学院跨学科创新团队(JCTD-2020-08);江苏高校优势学科建设工程资助项目;南京大学创新基金和中央高校基础研究基金(021314380195)

CeO2@montmorillonite Nanozyme for Crohn’s Disease Therapy

CHEN Xiwen1, CHENG Chaoqun1, CHENG Yuan1, ZHAO Sheng1, WEI Hui1,2()   

  1. 1.Department of Biomedical Engineering,College of Engineering and Applied Sciences,Nanjing National Laboratory of Microstructures,Jiangsu Key Laboratory of Artificial Functional Materials,Nanjing 210023
    2.State Key Laboratory of Analytical Chemistry for Life Science and State Key Laboratory of Coordination Chemistry,Chemistry and Biomedicine Innovation Center(ChemBIC),School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China
  • Received:2022-04-11 Online:2022-12-10 Published:2022-08-24
  • Contact: WEI Hui E-mail:weihui@nju.edu.cn
  • Supported by:
    the the National Key Research and Development Program of China(2019YFA0709200);the National Natural Science Foundation of China(21874067);the CAS Interdisciplinary Innovation Team(JCTD-2020-08);the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD Program), China, the Innovation Foundation of Nanjing University, China and the Fundamental Research Funds for the Central Universities, China(021314380195)

摘要:

通过水热法合成由临床用药蒙脱石(Montmorillonite, MMT)负载的高效纳米酶氧化铈(Cerium dioxide, CeO2), 通过开展体内外实验, 拓展其在炎症性肠病治疗中的普适性. 结果显示, CeO2@MMT具有良好的类超氧化物歧化酶活性及类过氧化氢酶活性, 并且在小鼠克罗恩病的治疗中体现了明显的疗效及优异的生物安全性, 为CeO2@MMT的应用拓宽了方向.

关键词: 炎症性肠病, 克罗恩病, 氧化铈基纳米酶, 蒙脱石, 活性氧物种

Abstract:

Inflammatory bowel disease(IBD) is a chronic, nonspecific disease that is refractory and therefore affects the normal life of patients to a great extent. Although the global incidence of this disease is increasing year by year, ideal therapeutic drugs are still lacking in clinical practice. Inspired by the antioxidant activity of natural enzymes in organisms, the therapeutic strategies of natural enzymes for inflammatory diseases have come into view. However, natural enzymes have the limitations of poor stability and high cost. Here, we loaded cerium oxide on a montmoril- lonite surface to obtain CeO2@montmorillonite(CeO2@MMT) nanozyme and verified that it has an excellent curative effect and universality in the treatment of Crohn’s disease(CD) through in vitro and in vivo experiments. CeO2@MMT showed good superoxide dismutase- and catalase-like activity in vitro. Its negative charges enable it to target the positively charged intestinal inflammatory site and exert an anti-inflammatory effect at the focus. Thus, it showed obvious curative effects and excellent biosafety in the treatment of CD in mice, which broadened the spectrum of the application of nanozymes.

Key words: Inflammatory bowel disease, Crohn’s disease, Cerium oxide-based nanozyme, Montmorillonite, Reactive oxygen species

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