Cited by 17DNA Repair MechanismsUbiquitin and proteasome pathwaysDNA and Nucleic Acid Chemistry

Small-molecules that bind to the ubiquitin-binding motif of REV1 inhibit REV1 interaction with K164-monoubiquitinated PCNA and suppress DNA damage tolerance

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Vanarotti, Murugendra, Evison, Benjamin J., Actis, Marcelo L., Inoue, Akira, McDonald, Ezelle T., Shao, Youming, Heath, Richard J., Fujii, Naoaki·2018·Bioorganic & Medicinal Chemistry

Abstract

REV1 protein is a mutagenic DNA damage tolerance (DDT) mediator and encodes two ubiquitin-binding motifs (i.e., UBM1 and UBM2) that are essential for the DDT function. REV1 interacts with K164-monoubiquitinated PCNA (UbPCNA) in cells upon DNA-damaging stress. By using AlphaScreen assays to detect inhibition of REV1 and UbPCNA protein interactions along with an NMR-based strategy, we identified small-molecule compounds that inhibit the REV1/UbPCNA interaction and that directly bind to REV1 UBM2. In cells, one of the compound prevented recruitment of REV1 to PCNA foci on chromatin upon cisplatin treatment, delayed removal of UV-induced cyclopyrimidine dimers from nuclei, prevented UV-induced mutation of HPRT gene, and diminished clonogenic survival of cells that were challenged by cyclophosphamide or cisplatin. This study demonstrates the potential utility of a small-molecule REV1 UBM2 inhibitor for preventing DDT.

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Authors
Vanarotti, M., Evison, B. J., Actis, M. L., Inoue, A., McDonald, E. T., Shao, Y., Heath, R. J., & Fujii, N.
Affiliations
St. Jude Children's Research Hospital (US)
Corresponding author
Fujii, Naoaki
Venue
Bioorganic & Medicinal Chemistry
Publisher
Elsevier BV
Published
2018-05
Volume
26
Issue
9
Pages
2345-2353
ISSN
0968-0896 (ISSN-L)
OpenAlex
W2791888533
Cited by
17
References
33
Citations by year
2026: 1 · 2023: 2 · 2022: 1 · 2021: 2 · 2020: 7 · 2019: 4
FWCI
1.16
Type
journal article
Language
en
Open access
Locations
  • Bioorganic & Medicinal Chemistry (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • ALSAC
  • The Cell & Tissue Imaging Center
  • NCI (P30 CA021765-34)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA and Nucleic Acid Chemistry
Keywords
Rev1, DNA damage tolerance, PCNA monoubiquitination, small molecule inhibitors, protein-protein interaction inhibition, cisplatin, UV-induced DNA damage, HPRT mutations, clonogenic survival
MeSH terms
Y-Family DNA Polymerases, Binding Sites, Cisplatin, DNA, DNA Damage, Humans, Hypoxanthine Phosphoribosyltransferase, Lysine, Nuclear Proteins, Nucleotidyltransferases, Piperazines, Protein Binding, Ultraviolet Rays, Mutagenesis, Proliferating Cell Nuclear Antigen, Nuclear Magnetic Resonance, Biomolecular, Cell Line, Tumor, Ubiquitination

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