Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (12): 20220476.doi: 10.7503/cjcu20220476

• Article • Previous Articles     Next Articles

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)

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

CLC Number: 

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