Cited by 92DNA Repair MechanismsSkin Protection and AgingCarcinogens and Genotoxicity Assessment

Differential repair of UVB-induced cyclobutane pyrimidine dimers in cultured human skin cells and whole human skin

Mouret, Stéphane, Charveron, Marie, Favier, Alain, Cadet, Jean, Douki, Thierry·2008·DNA Repair

Abstract

Cyclobutane pyrimidine dimers (CPDs) and pyrimidine (6-4) pyrimidone photoproducts (6-4PPs) are the two main classes of mutagenic DNA damages induced by UVB radiation. Numerous studies have been devoted so far to their formation and repair in human cells and skin. However, the biochemical methods used often lack the specificity that would allow the individual study of each of the four CPDs and 6-4PPs produced at TT, TC, CT and CC dinucleotides. In the present work, we applied an HPLC-mass spectrometry assay to study the formation and repair of CPDs and 6-4PPs photoproducts in primary cultures of human keratinocytes and fibroblasts as well as in whole human skin. We first observed that the yield of dimeric lesions was slightly higher in fibroblasts than in keratinocytes. In contrast, the rate of global repair was higher in the last cell type. Moreover, removal of DNA photoproducts in skin biopsies was found to be slower than in both cultured skin cells. In agreement with previous works, the repair of 6-4PPs was found to be more efficient than that of CPDs in the three types of samples, with no observed difference between the removal of the TT and TC derivatives. In contrast, a significant influence of the nature of the two modified pyrimidines was observed on the repair rate of CPDs. The decreasing order of removal efficiency was the following: C<>T>C<>C>T<>C>T<>T. These data, together with the known intrinsic mutational properties of the lesions, would support the reported UV mutation spectra. A noticeable exception concerns CC dinucleotides that are mutational hotspots with an UV-specific CC to TT tandem mutation, although related bipyrimidine photoproducts are produced in low yields and efficiently repaired.

Integrity signals

Registry

Crossref · 10.1016/j.dnarep.2008.01.005

Cites

56 of 56 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The four CPDs are repaired at different rates, with increasing efficiency in the order T<>T < T<>C < C<>C < C<>T.

    “HPLC-ESI-MS ⁄ MS measurement also revealed that the four CPDs were not repaired with the same rate, being enzymatically removed in the following increasing order of efficiency: T< >T < T<>C < C<>C C<>T (49).”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Mouret, S., Charveron, M., Favier, A., Cadet, J., & Douki, T.
Affiliations
Université Joseph Fourier (FR)
Corresponding author
Douki, Thierry
Venue
DNA Repair
Publisher
Elsevier BV
Published
2008-05
Volume
7
Issue
5
Pages
704-712
ISSN
  • 1568-7856 (ISSN-L)
  • 1568-7864
OpenAlex
W1981121984
Cited by
92
References
56
Citations by year
2026: 3 · 2025: 1 · 2024: 1 · 2023: 3 · 2022: 3 · 2021: 9 · 2020: 8 · 2019: 7 · 2018: 3 · 2017: 4 · 2016: 5 · 2015: 4 · 2014: 6 · 2013: 10 · 2012: 6
FWCI
2.61
Type
journal article
Language
en
Open access
closed
Locations
  • DNA repair (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Health Sciences › Medicine › Dermatology › Skin Protection and Aging
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Carcinogens and Genotoxicity Assessment
Keywords
cyclobutane pyrimidine dimers, 6-4 pyrimidone photoproducts, UVB-induced DNA damage, human keratinocytes, fibroblasts, human skin
MeSH terms
Cells, Cultured, DNA Repair, Fibroblasts, Humans, Kinetics, Organ Culture Techniques, Pyrimidine Dimers, Skin, Ultraviolet Rays, Keratinocytes

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review