Journal of Inorganic Materials

   

CeO2 Clusterzymes: Biomimetic Synthesis and Treatment for Acute Liver Injury

YAN Mijia1,2, ZHANG Jiale1,2, ZHANG Qiuhong1, CHEN Hangrong1,2   

  1. 1. School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China;
    2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
  • Received:2025-02-26 Revised:2025-03-21
  • Contact: ZHANG Qiuhong, associate professor. E-mail: zhangqh@ucas.ac.cn
  • About author:YAN Mijia (1999-), female, Master candidate. E-mail: yanmijia22@mails.ucas.ac.cn
  • Supported by:
    Research Funds of Hangzhou Institute for Advanced Study, UCAS(B03006C01600407, A05006C019014); Opening Project of State Key Laboratory of Advanced Ceramics (SKL202412SIC)

Abstract: Acetaminophen overdose is a common cause of acute liver injury in clinical settings, characterized by the accumulation of reactive oxygen species (ROS) and infiltration of inflammatory cells. In this study, CeO2 clusterzymes (named as CeCs) of ultra-small size (around 1.3 nm) have been synthesized by a biomimetic mineralization process. The obtained CeCs present a high oxygen vacancy content (52.6%) and a high Ce3+/Ce4+ ratio (1.06), showing excellent adsorption and removal ability to a variety of reactive oxygen species (ROS, including free radicals), which can be used for hepatocyte protection. The in vivo animal experiments further confirmed that CeCs provided highly effective therapeutic intervention for acetaminophen-induced acute liver injury, extending the therapeutic window, and reversing sterile inflammation, underscoring their potential for clinical application.

Key words: cerium oxide, clusterzyme, acute liver injury, antioxidant, anti-inflammatory

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