Journal
INTERNATIONAL JOURNAL OF NANOMEDICINE
Volume 9, Issue -, Pages 271-286Publisher
DOVE MEDICAL PRESS LTD
DOI: 10.2147/IJN.S57918
Keywords
carcinogenicity; exposure assessment; genotoxicity; nanoparticles; risk evaluation
Funding
- Ministry of Food and Drug Safety [10182MFDS991]
- Ecoinnovation Project by the Korean Ministry of Environment [412-112-110]
- Mahidol University, Thailand
- Faculty of Environment and Resource Studies, Mahidol University, Thailand
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Engineered nanoparticles (NPs) are widely used in many sectors, such as food, medicine, military, and sport, but their unique characteristics may cause deleterious health effects. Close attention is being paid to metal NP genotoxicity; however, NP genotoxic/carcinogenic effects and the underlying mechanisms remain to be elucidated. In this review, we address some metal and metal oxide NPs of interest and current genotoxicity tests in vitro and in vivo. Metal NPs can cause DNA damage such as chromosomal aberrations, DNA strand breaks, oxidative DNA damage, and mutations. We also discuss several parameters that may affect genotoxic response, including physicochemical properties, widely used assays/end point tests, and experimental conditions. Although potential biomarkers of nanogenotoxicity or carcinogenicity are suggested, inconsistent findings in the literature render results inconclusive due to a variety of factors. Advantages and limitations related to different methods for investigating genotoxicity are described, and future directions and recommendations for better understanding genotoxic potential are addressed.
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