Detection of UV-induced mutagenic thymine dimer using graphene oxide

Cited 5 time in scopus
Metadata Downloads

Full metadata record

DC FieldValueLanguage
dc.contributor.authorChan Ho Chung-
dc.contributor.authorJ H Kim-
dc.contributor.authorBong Hyun Chung-
dc.description.abstractIn this paper, we report for the first time that graphene oxide (GO) can interact with mutagenic DNA but not intact DNA. After UV-irradiated fluorophore-linked DNA containing thymine repeats was mixed with GO, a decrease in fluorescence was observed in a time-dependent manner. In contrast, no fluorescence change was observed with intact DNA, indicating that UV irradiation of DNA resulted in the formation of mutagenic bases. Because GO is known to act as a fluorescence quencher, the decreased fluorescence implies adsorption of the UV-irradiated DNA onto GO. It appears that the decreased fluorescence might result from the greater accessibility of hydrophobic methyl groups and phenyl rings of thymine dimers to GO and from deformed DNA structures with less effective charge shielding under salt-containing conditions. Using this affinity of GO for mutagenic DNA, we could detect UV-irradiated DNA at concentrations as low as 100 pM. We were also able to analyze the ability of phototoxic drugs to catalyze the formation of mutagens under UV irradiation with GO. Because our method is highly sensitive and feasible and does not require the pretreatment of DNA, we propose that it could accelerate the screening of potential phototoxic drug candidates that would be able to sensitize mutagenic dsDNA.-
dc.publisherAmer Chem Soc-
dc.titleDetection of UV-induced mutagenic thymine dimer using graphene oxide-
dc.title.alternativeDetection of UV-induced mutagenic thymine dimer using graphene oxide-
dc.citation.titleAnalytical Chemistry-
dc.contributor.affiliatedAuthorChan Ho Chung-
dc.contributor.affiliatedAuthorBong Hyun Chung-
dc.identifier.bibliographicCitationAnalytical Chemistry, vol. 86, no. 23, pp. 11586-11591-
Appears in Collections:
1. Journal Articles > Journal Articles
Files in This Item:
  • There are no files associated with this item.

Items in OpenAccess@KRIBB are protected by copyright, with all rights reserved, unless otherwise indicated.