Protective effect of CeO<sub>2</sub> nanoparticles on photo-induced oxidative damage of DNA
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- FUJITA Naoko
- Department of Materials Science and Engineering, Faculty of Engineering, Nagasaki University
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- KAMADA Kai
- Department of Materials Science and Engineering, Faculty of Engineering, Nagasaki University
Bibliographic Information
- Other Title
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- Protective effect of CeO2 nanoparticles on photo-induced oxidative damage of DNA
Abstract
The present paper demonstrates that inorganic ceria (CeO2) nanoparticles effectively inhibit anomalous oxidative damage of DNA induced by ultraviolet (UV) light irradiation. To utilize the CeO2 nanoparticles for the protection test of DNA, a colloidal solution of monodispersed and crystallized CeO2 nanoparticles is synthesized through a photochemical reaction of Ce(NO3)3 solution, followed by dialysis to remove unreacted electrolytes. Subsequently, the UV light induced oxidative damage of DNA in the presence or absence of CeO2 nanoparticles is evaluated by a quantitative analysis of 8-hydroxy-2′-deoxyguanosine (8-OHdG) which is an oxidation product of guanine in base sequences. The 8-OHdG concentration in DNA is increased by the exposure to UV light. On the other hand, the co-presence of CeO2 nanoparticles diminish the formation rate of 8-OHdG. Such favorable effect of CeO2 nanoparticles is due to an excellent annihilation activity of reactive oxygen species (ROS) accounting for the DNA oxidation as well as a UV light absorption ability based on semiconducting nature.
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 122 (1422), 141-145, 2014
The Ceramic Society of Japan
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Details 詳細情報について
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- CRID
- 1390282680264560384
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- NII Article ID
- 130004950933
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- ISSN
- 13486535
- 18820743
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- HANDLE
- 10069/34272
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed