Toxicity of pristine versus functionalized fullerenes: mechanisms of cell damage and the role of oxidative stress

Archives of Toxicology
Andreja TrpkovicVladimir Trajkovic

Abstract

The fullerene C(60), due to the physicochemical properties of its spherical cage-like molecule build exclusively from carbon atoms, is able to both scavenge and generate reactive oxygen species. While this unique dual property could be exploited in biomedicine, the low water solubility of C(60) hampers the investigation of its behavior in biological systems. The C(60) can be brought into water by solvent extraction, by complexation with surfactants/polymers, or by long-term stirring, yielding pristine (unmodified) fullerene suspensions. On the other hand, a modification of the C(60) core by the attachment of various functional groups results in the formation of water-soluble fullerene derivatives. Assessment of toxicity associated with C(60) preparations is of pivotal importance for their biomedical application as cytoprotective (antioxidant), cytotoxic (anticancer), or drug delivery agents. Moreover, the widespread industrial utilization of fullerenes may also have implications for human health. However, the alterations in physicochemical properties imposed by the utilization of different methods for C(60) solubilization profoundly influence toxicological effects of fullerene preparations, thus making the analysis of their pot...Continue Reading

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