Amato NJ, Wang Y. Epimeric 2-deoxyribose lesions: Products from the improper chemical repair of 2-deoxyribose radicals.
Chem Res Toxicol 2014;
27:470-9. [PMID:
24517165 PMCID:
PMC4002128 DOI:
10.1021/tx400430g]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
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Genomic
integrity is constantly challenged by DNA damaging agents
such as reactive oxygen species (ROS). Consequently, DNA damage can
compromise the fidelity and efficiency of essential DNA metabolic
processes, including replication and transcription, which may contribute
significantly to the etiology of many human diseases. Here, we review
one family of DNA lesions, the epimeric 2-deoxyribose lesions, which
arise from the improper chemical repair of the 2-deoxyribose radicals.
Unlike most other DNA lesions, the epimeric 2-deoxyribose lesions
are indistinguishable from their corresponding unmodified nucleosides
in both molecular mass and chemical reactivity. We placed our emphasis
of discussion on the formation of these lesions, their impact on the
structure and stability of duplex DNA, their biological consequences,
their potential therapeutic relevance, and future research directions
about these modified nucleosides.
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