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Updated: Mar 24, 2026
Catalytic Scavenging of Plant Reactive Oxygen Species In Vivo by Anionic Cerium Oxide Nanoparticles
Published on: August 26, 2018
Hyaluronan coated cerium oxide nanoparticles modulate CD44 and reactive oxygen species expression in human
Megan S Lord1, Brooke L Farrugia1, Claudia M Y Yan1
1Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
Abstract:
Cerium oxide nanoparticles are being widely explored for cell therapies. In this study, nanoceria was functionalized with hyaluronan (HA) using the organosilane linker, 3-aminopropyltriethoxysilane. HA-nanoceria was found to be cytocompatible and to reduce intracellular reactive oxygen species in human fibroblasts. The HA-nanoceria was found to colocalize with CD44 on the surface of the cells and once internalized traffic to the lysosomes, be degraded and induce markers of autophagy. These particles were also effective in reducing the cell surface expression of CD44. Together these data suggest that HA-nanoceria is a promising drug delivery material to target CD44-expressing cells through a variety of mechanisms. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 1736-1746, 2016.
