Cited by 89DNA Repair MechanismsGenomics and Chromatin DynamicsCancer-related Molecular Pathways

The DOI matches its Crossref record; 66 of the 66 references it cites were found in a registry or an index.

A role for DNA polymerase θ in the timing of DNA replication

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Abstract

Although DNA polymerase θ (Pol θ) is known to carry out translesion synthesis and has been implicated in DNA repair, its physiological function under normal growth conditions remains unclear. Here we present evidence that Pol θ plays a role in determining the timing of replication in human cells. We find that Pol θ binds to chromatin during early G1, interacts with the Orc2 and Orc4 components of the Origin recognition complex and that the association of Mcm proteins with chromatin is enhanced in G1 when Pol θ is downregulated. Pol θ-depleted cells exhibit a normal density of activated origins in S phase, but early-to-late and late-to-early shifts are observed at a number of replication domains. Pol θ overexpression, on the other hand, causes delayed replication. Our results therefore suggest that Pol θ functions during the earliest steps of DNA replication and influences the timing of replication initiation.

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Crossref · 10.1038/ncomms5285

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  • POLQ mRNA is not significantly induced by UVC irradiation, although its expression decreases sharply in UV-irradiated p53-silenced XP-C cells.

    “In contrast, the mRNA expression of pol theta (POLQ), a polymerase that is important for the firing of new replication origins ( 32 ), is not significantly induced by UVC irradiation, although its expression decreases sharply in UV-irradiated p53-silenced XP-C cells ( Supplementary Figure S4 ).”

    From Predominant role of DNA polymerase eta and p53-dependent translesion synthesis in the survival of ultraviolet-irradiated human cells (2017) · cites this paper as [32]

    The citation is attached to the description of POLQ’s role in replication, not to the UVC-expression results, which the citing sentence attributes to its own Supplementary Figure S4. The source’s Results and Discussion support a role for POLQ in the timing of origin activation, but the Results report unchanged active-origin density after POLQ depletion and conclude that depletion did not increase origin firing. They do not establish that POLQ is important for firing new origins. (LLM, conf=0.84)

    Experimental — accuracy not yet measured

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Metadata

Authors
Fernandez-Vidal, A., Guitton-Sert, L., Cadoret, J.-C., Drac, M., Schwob, E., Baldacci, G., Cazaux, C., & Hoffmann, J.-S.
Affiliations
Centre National de la Recherche Scientifique (FR)
Corresponding author
  • Cazaux, Christophe
  • Hoffmann, Jean-Sébastien
Venue
Nature Communications
Published
2014-07-03
Volume
5
Issue
1
Pages
4285-4285
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2056093824
Cited by
89
References
66
Citations by year
2026: 4 · 2025: 2 · 2024: 2 · 2023: 9 · 2022: 9 · 2021: 14 · 2020: 7 · 2019: 4 · 2018: 8 · 2017: 5 · 2016: 12 · 2015: 7 · 2014: 5
FWCI
3.96
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • Ligue Contre le Cancer
  • Centre National de la Recherche Scientifique
  • Groupement des Entreprises Françaises dans la lutte contre le Cancer
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
Keywords
DNA polymerase theta, DNA replication timing, replication initiation, origin recognition complex, ORC2, ORC4, MCM proteins, chromatin binding, G1 phase, replication domains, translesion synthesis, DNA repair, human cells
MeSH terms
DNA Polymerase theta, Cell Line, Chromatin, DNA-Directed DNA Polymerase, DNA Replication, Humans, G1 Phase, S Phase, Cell Cycle Proteins, Origin Recognition Complex, Minichromosome Maintenance Proteins

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