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Issue 1, 2015
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Catalytic properties and biomedical applications of cerium oxide nanoparticles

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Abstract

Cerium oxide nanoparticles (nanoceria) have shown promise as catalytic antioxidants in the test tube, cell culture models and animal models of disease. However given the reactivity that is well established at the surface of these nanoparticles, the biological utilization of nanoceria as a therapeutic still poses many challenges. Moreover the form that these particles take in a biological environment, such as the changes that can occur due to a protein corona, are not well established. This review aims to summarize the existing literature on biological use of nanoceria, and to raise questions about what further study is needed to apply this interesting catalytic material to biomedical applications. These questions include: 1) How does preparation, exposure dose, route and experimental model influence the reported effects of nanoceria in animal studies? 2) What are the considerations to develop nanoceria as a therapeutic agent in regards to these parameters? 3) What biological targets of reactive oxygen species (ROS) and reactive nitrogen species (RNS) are relevant to this targeting, and how do these properties also influence the safety of these nanomaterials?

Graphical abstract: Catalytic properties and biomedical applications of cerium oxide nanoparticles

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Supplementary files

Article information


Submitted
26 Aug 2014
Accepted
09 Nov 2014
First published
10 Nov 2014

Environ. Sci.: Nano, 2015,2, 33-53
Article type
Critical Review

Catalytic properties and biomedical applications of cerium oxide nanoparticles

C. Walkey, S. Das, S. Seal, J. Erlichman, K. Heckman, L. Ghibelli, E. Traversa, J. F. McGinnis and W. T. Self, Environ. Sci.: Nano, 2015, 2, 33
DOI: 10.1039/C4EN00138A

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