Cited by 109DNA Repair MechanismsDNA and Nucleic Acid ChemistryCarcinogens and Genotoxicity Assessment

DNA damage bypass operates in the S and G2 phases of the cell cycle and exhibits differential mutagenicity

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Diamant, Noam, Hendel, Ayal, Vered, Ilan, Carell, Thomas, Reißner, Thomas, de Wind, Niels, Geacinov, Nicholas, Livneh, Zvi·2012·Nucleic Acids Research

Abstract

Translesion DNA synthesis (TLS) employs low-fidelity DNA polymerases to bypass replication-blocking lesions, and being associated with chromosomal replication was presumed to occur in the S phase of the cell cycle. Using immunostaining with anti-replication protein A antibodies, we show that in UV-irradiated mammalian cells, chromosomal single-stranded gaps formed in S phase during replication persist into the G2 phase of the cell cycle, where their repair is completed depending on DNA polymerase ζ and Rev1. Analysis of TLS using a high-resolution gapped-plasmid assay system in cell populations enriched by centrifugal elutriation for specific cell cycle phases showed that TLS operates both in S and G2. Moreover, the mutagenic specificity of TLS in G2 was different from S, and in some cases overall mutation frequency was higher. These results suggest that TLS repair of single-stranded gaps caused by DNA lesions can lag behind chromosomal replication, is separable from it, and occurs both in the S and G2 phases of the cell cycle. Such a mechanism may function to maintain efficient replication, which can progress despite the presence of DNA lesions, with TLS lagging behind and patching regions of discontinuity.

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Authors
Diamant, N., Hendel, A., Vered, I., Carell, T., Reißner, T., de Wind, N., Geacinov, N., & Livneh, Z.
Affiliations
Leiden University Medical Center (NL)
Corresponding author
Livneh, Zvi
Venue
Nucleic Acids Research
Published
2011-09-09
Volume
40
Issue
1
Pages
170-180
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W2088339455
Cited by
109
References
48
Citations by year
2025: 2 · 2024: 9 · 2023: 10 · 2022: 2 · 2021: 9 · 2020: 6 · 2019: 7 · 2018: 6 · 2017: 13 · 2016: 8 · 2015: 8 · 2014: 7 · 2013: 8 · 2012: 13
FWCI
3.76
Type
journal article
Language
en
Open access
Locations
  • Nucleic Acids Research (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • Leiden Repository (Leiden University) (submittedVersion)
Funders
  • Flight Attendant Medical Research Institute
  • National Cancer Institute
  • National Institutes of Health
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA and Nucleic Acid Chemistry
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Carcinogens and Genotoxicity Assessment
Keywords
translesion synthesis, DNA damage bypass, S phase, G2 phase, cell cycle, UV-induced DNA damage, replication protein A, Rev1, mutagenesis, single-stranded DNA gaps, centrifugal elutriation, DNA replication
MeSH terms
Y-Family DNA Polymerases, Animals, Cells, Cultured, DNA, DNA Damage, DNA-Directed DNA Polymerase, DNA-Binding Proteins, Humans, Nuclear Proteins, Nucleotidyltransferases, Ultraviolet Rays, G2 Phase, S Phase, Mutagenesis, Cell Line, Tumor, Mice, Replication Protein A

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