Please use this identifier to cite or link to this item: https://doi.org/10.1177/1535370213505964
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dc.titleToxicological profile of small airway epithelial cells exposed to gold nanoparticles
dc.contributor.authorNg, C.-T.
dc.contributor.authorLi, J.J.
dc.contributor.authorGurung, R.L.
dc.contributor.authorHande, M.P.
dc.contributor.authorOng, C.-N.
dc.contributor.authorBay, B.-H.
dc.contributor.authorYung, L.-Y.L.
dc.date.accessioned2014-06-17T07:50:48Z
dc.date.available2014-06-17T07:50:48Z
dc.date.issued2013-12
dc.identifier.citationNg, C.-T., Li, J.J., Gurung, R.L., Hande, M.P., Ong, C.-N., Bay, B.-H., Yung, L.-Y.L. (2013-12). Toxicological profile of small airway epithelial cells exposed to gold nanoparticles. Experimental Biology and Medicine 238 (12) : 1355-1361. ScholarBank@NUS Repository. https://doi.org/10.1177/1535370213505964
dc.identifier.issn15353702
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/64743
dc.description.abstractGold nanoparticles (AuNPs) have diverse applications in the biomedical industry such as in diagnosis, labeling, delivering and sensing. Despite their prevalent medical use, nanotoxicity induced by AuNPs is still largely unknown. We have previously shown that AuNPs could exert cytotoxic effects on lung fibroblasts. In this study, we investigated the in vitro toxicological effects of AuNPs in small airway epithelial cells (SAECs) which are the first cells of contact for inhaled NPs and compared expression of metallothionein (MT), a reactive oxygen species scavenger, in SAECs and lung fibroblasts in vitro. Transmission electron microscopy (TEM) and energy-dispersive X-ray (EDX) spectroscopy study revealed cellular uptake of aggregates of AuNPs into the cytoplasm at the ultrastructural level. A significant increase in lipid peroxide as well as substantial DNA damage and cytotoxicity was observed in AuNP-treated cells. For MT expression, AuNPs induced down-regulation of the MT-1X isoform in SAECs, but up-regulation of the MT-1X and MT-2 A isoforms in MRC5 lung fibroblasts. The present study suggests that AuNPs could induce oxidative stress-related cytotoxicity and genotoxicity in SAECs. © 2013 by the Society for Experimental Biology and Medicine.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1177/1535370213505964
dc.sourceScopus
dc.subjectcytotoxicity and genotoxicity
dc.subjectDNA damage
dc.subjectGold nanoparticles
dc.subjectlung
dc.subjectmetallothionein (MT)
dc.subjectoxidative stress
dc.typeArticle
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.contributor.departmentSAW SWEE HOCK SCHOOL OF PUBLIC HEALTH
dc.description.doi10.1177/1535370213505964
dc.description.sourcetitleExperimental Biology and Medicine
dc.description.volume238
dc.description.issue12
dc.description.page1355-1361
dc.description.codenEBMMB
dc.identifier.isiut000327510800004
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