Cited by 51DNA Repair MechanismsDNA and Nucleic Acid ChemistryCarcinogens and Genotoxicity Assessment

DNA polymerase β-dependent long patch base excision repair in living cells

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Asagoshi, Kenjiro, Liu, Yuan, Masaoka, Aya, Lan, Li, Prasad, Rajendra, Horton, Julie K., Brown, Ashley R., Wang, Xiao-hong +5 more·2010·DNA Repair

Abstract

We examined a role for DNA polymerase beta (Pol beta) in mammalian long patch base excision repair (LP BER). Although a role for Pol beta is well known in single-nucleotide BER, information on this enzyme in the context of LP BER has been limited. To examine the question of Pol beta involvement in LP BER, we made use of nucleotide excision repair-deficient human XPA cells expressing UVDE (XPA-UVDE), which introduces a nick directly 5' to the cyclobutane pyrimidine dimer or 6-4 photoproduct, leaving ends with 3'-OH and 5'-phosphorylated UV lesion. We observed recruitment of GFP-fused Pol beta to focal sites of nuclear UV irradiation, consistent with a role of Pol beta in repair of UV-induced photoproducts adjacent to a strand break. This was the first evidence of Pol beta recruitment in LP BER in vivo. In cell extract, a 5'-blocked oligodeoxynucleotide substrate containing a nicked 5'-cyclobutane pyrimidine dimer was repaired by Pol beta-dependent LP BER. We also demonstrated Pol beta involvement in LP BER by making use of mouse cells that are double null for XPA and Pol beta. These results were extended by experiments with oligodeoxynucleotide substrates and purified human Pol beta.

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Crossref · 10.1016/j.dnarep.2009.11.002

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Authors
Asagoshi, K., Liu, Y., Masaoka, A., Lan, L., Prasad, R., Horton, J. K., Brown, A. R., Wang, X.-H., Bdour, H. M., Sobol, R. W., Taylor, J.-S., Yasui, A., & Wilson, S. H.
Affiliations
  • National Institutes of Health (US)
  • University of Pittsburgh (US)
  • Washington University in St. Louis (US)
  • Tohoku University (JP)
Corresponding author
Wilson, Samuel H.
Venue
DNA Repair
Publisher
Elsevier BV
Published
2010-02
Volume
9
Issue
2
Pages
109-119
ISSN
  • 1568-7856 (ISSN-L)
  • 1568-7864
OpenAlex
W1967658193
Cited by
51
References
35
Citations by year
2026: 3 · 2025: 1 · 2024: 1 · 2023: 2 · 2022: 1 · 2021: 4 · 2020: 3 · 2019: 2 · 2018: 1 · 2017: 2 · 2016: 3 · 2015: 4 · 2014: 2 · 2013: 3 · 2012: 6
FWCI
2.55
Type
journal article
Language
en
Open access
Locations
  • DNA repair (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • American Cancer Society (1 P20 CA132385-01, 1 R01 AG24364-01, CA40463)
  • National Institute of Environmental Health Sciences (RSG-05-246-01-GMC, Z01-ES050158, Z01-ES050159)
  • Ministry of Education, Culture, Sports, Science and Technology
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
DNA polymerase beta, long-patch base excision repair, nucleotide excision repair, XPA, cyclobutane pyrimidine dimers, 6-4 photoproducts, UV-induced DNA damage, strand breaks
MeSH terms
Animals, Base Sequence, Cell Extracts, Cell Line, Cell Survival, DNA Repair, Endonucleases, Humans, Molecular Sequence Data, Oligonucleotides, Protein Binding, Pyrimidine Dimers, Ultraviolet Rays, Immunoblotting, Polymerase Chain Reaction, DNA Polymerase beta, Flap Endonucleases, Mice, Xeroderma Pigmentosum Group A Protein

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