Cited by 51DNA Repair MechanismsCancer-related Molecular PathwaysFungal and yeast genetics research

UV irradiation induces a postreplication DNA damage checkpoint

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Callegari, A. John, Kelly, Thomas J.·2006·Proceedings of the National Academy of Sciences

Abstract

Eukaryotic cells irradiated with high doses of UV exhibit cell-cycle responses referred to as G 1 /S, intraS, and G 2 /M checkpoints. After a moderate UV dose that approximates sunlight exposure and is lethal to fission yeast checkpoint mutants, we found unexpectedly that these cell-cycle responses do not occur. Instead, cells at all stages of the cell cycle carry lesions into S phase and delay cell-cycle progression for hours after the completion of bulk DNA synthesis. Both DNA replication and the checkpoint kinase, Chk1, are required to generate this cell-cycle response. UV-irradiation of Δ chk1 cells causes chromosome damage and loss of viability only after cells have replicated irradiated DNA and entered mitosis. These data suggest that an important physiological role of the cell-cycle response to UV is to provide time for postreplication repair.

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Crossref · 10.1073/pnas.0607343103

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  • Very low UV doses do not appear to activate the G1 checkpoint.

    “This is consistent with the observation that very low UV doses do not seem to activate the G1 checkpoint [61,64,65]”

    From Mind the gap: keeping UV lesions in check (2011) · cites this paper as [64]

  • In wild-type yeast, after acute low-dose UVC (5 J/m2), cells do not delay cell cycle progression until they pass through S phase; this is called the post-replication checkpoint.

    “In a wild type background, elegant time lapse experiments showed that after an acute low dose of UVC light (5 J/m2) yeast cells do not delay cell cycle progression until they proceed through S phase; for this reason this response was called post-replication checkpoint [64].”

    From Mind the gap: keeping UV lesions in check (2011) · cites this paper as [64]

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Authors
Callegari, A. J., & Kelly, T. J.
Affiliations
Memorial Sloan Kettering Cancer Center (US)
Venue
Proceedings of the National Academy of Sciences
Published
2006-10-24
Volume
103
Issue
43
Pages
15877-15882
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1998408422
Cited by
51
References
68
Citations by year
2026: 1 · 2023: 2 · 2022: 3 · 2021: 1 · 2020: 1 · 2019: 2 · 2018: 6 · 2017: 2 · 2016: 1 · 2015: 3 · 2014: 1 · 2013: 5 · 2012: 4
FWCI
1.49
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
UV irradiation, DNA damage checkpoint, cell cycle checkpoints, Chk1, DNA replication, S phase, cell cycle arrest, chromosomal damage, Schizosaccharomyces pombe, DNA repair
MeSH terms
Checkpoint Kinase 1, Cell Cycle, DNA Damage, DNA Replication, DNA, Fungal, Mutation, Protein Kinases, Schizosaccharomyces, Ultraviolet Rays, Schizosaccharomyces pombe Proteins

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