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Size-dependent cytotoxicity of copper oxide nanoparticles in lung epithelial cells
Journal article   Open access   Peer reviewed

Size-dependent cytotoxicity of copper oxide nanoparticles in lung epithelial cells

Amaraporn Wongrakpanich, Imali A Mudunkotuwa, Sean M Geary, Angie S Morris, Kranti A Mapuskar, Douglas R Spitz, Vicki H Grassian and Aliasger K Salem
Environmental science. Nano, Vol.3(2), pp.365-374
04/01/2016
DOI: 10.1039/C5EN00271K
PMCID: PMC4917228
PMID: 27347420

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Abstract

The increasing use of copper oxide (CuO) nanoparticles (NPs) in medicine and industry demands an understanding of their potential toxicities. In this study, we compared the in vitro cytotoxicity of CuO NPs of two distinct sizes (4 and 24 nm) using the A549 human lung cell line. Despite possessing similar surface and core oxide compositions, 24 nm CuO NPs were significantly more cytotoxic than 4 nm CuO NPs. The difference in size may have affected the rate of entry of NPs into the cell, potentially influencing the amount of intracellular dissolution of Cu 2+ and causing a differential impact on cytotoxicity.
toxicity nanoparticles Copper oxide A549

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