Cited by 233DNA Repair MechanismsCarcinogens and Genotoxicity AssessmentEffects of Radiation Exposure

Oxidatively generated complex DNA damage: Tandem and clustered lesions

Cadet, Jean, Ravanat, Jean-Luc, TavernaPorro, Marisa, Menoni, Hervé, Angelov, Dimitar·2012·Cancer Letters

Abstract

There is an increasing interest for oxidatively generated complex lesions that are potentially more detrimental than single oxidized nucleobases. In this survey, the recently available information on the formation and processing of several classes of complex DNA damage formed upon one radical hit including mostly hydroxyl radical and one-electron oxidants is critically reviewed. The modifications include tandem base lesions, DNA-protein cross-links and intrastrand (purine 5',8-cyclonucleosides, adjacent base cross-links) and interstrand cross-links. Information is also provided on clustered lesions produced essentially by exposure of cells to ionizing radiation and high energetic heavy ions through the involvement of multiple radical events that induce several lesions DNA in a close spatial vicinity. These consist mainly of double strand breaks (DSBs) and non-DSB clustered lesions that are referred as to oxidatively generated clustered DNA lesions (OCDLs).

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Crossref · 10.1016/j.canlet.2012.04.005

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  • An alternative mechanism for 6-TG-photosensitized formation of DPCs has been proposed based on reactivity of guanine radical cation with biological nucleophiles.

    “An alternative mechanism for the 6-TG-photosensitized formation of DPCs has been recently proposed (216) on the basis of the welldocumented reactivity of Gua •+ , the predominant oneelectron DNA oxidation transient radical formed, with relevant biological nucleophiles (111,134,136,217).”
  • Water reacts efficiently with guanine radical cation, and amino acids with nucleophilic groups including lysine, arginine, and serine covalently bind to C8 of guanine.

    “In addition to water that was found initially to efficiently react with Gua •+ (218), several amino acids bearing a nucleophilic group, including lysine, arginine and serine were shown to covalent bind to the C8 of guanine (111,216).”
  • Intrastrand crosslinks, interstrand crosslinks, double-strand breaks, and oxidatively generated clustered DNA lesions can form after ionizing radiation and ultraviolet radiation.

    “Intrastrand crosslinks, interstrand crosslinks, DSBs, and OCDLs can be formed after exposure to IR and UV radiations [21].”
  • Oxidative stress can produce many forms of DNA damage or replication stress, including base and sugar damage, AP sites, single-strand breaks, double-strand breaks, tandem base modifications, interstrand crosslinks, protein-DNA crosslinks, mismatched pairs with damaged bases, stalled replication forks, and oxidatively generated clustered lesions.

    “Oxidative stress can induce a variety of different types of DNA damage or replication stress, such as base (purine and pyrimidine) damage, sugar moiety damage, Apurinic/apyrimidinic (AP) sites, DNA single-strand breaks (SSBs), DNA double-strand breaks (DSBs), tandem base modifications (e.g., DNA intrastrand crosslink), DNA interstrand crosslinks, protein–DNA crosslinks, mismatched pairs with dam”

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Authors
Cadet, J., Ravanat, J.-L., TavernaPorro, M., Menoni, H., & Angelov, D.
Affiliations
  • Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
  • Université Joseph Fourier (FR)
  • École Normale Supérieure de Lyon (FR)
Corresponding author
Cadet, Jean
Venue
Cancer Letters
Publisher
Elsevier BV
Published
2012-12
Volume
327
Issue
1-2
Pages
5-15
ISSN
0304-3835 (ISSN-L)
OpenAlex
W2125667702
Cited by
233
References
191
Citations by year
2026: 11 · 2025: 9 · 2024: 9 · 2023: 16 · 2022: 12 · 2021: 21 · 2020: 11 · 2019: 17 · 2018: 17 · 2017: 23 · 2016: 23 · 2015: 17 · 2014: 24 · 2013: 17 · 2012: 6
FWCI
1.87
Type
journal article
Language
en
Open access
closed
Locations
  • Cancer Letters (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Funders
  • Association pour la Recherche sur le Cancer
  • Agence Nationale de la Recherche (ANR-09-PIRI-0022)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Carcinogens and Genotoxicity Assessment
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
Keywords
clustered DNA lesions, hydroxyl radicals, one-electron oxidants, DNA-protein crosslinks, interstrand cross-links, intrastrand cross-links, ionizing radiation, high-energy heavy ions, DNA double-strand breaks, DNA repair
MeSH terms
Animals, DNA, DNA Damage, DNA Repair, Free Radicals, Humans, Nucleic Acid Conformation, Signal Transduction, Mutagenesis, Reactive Oxygen Species, Oxidative Stress, Reactive Nitrogen Species

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