Cited by 29DNA Repair MechanismsGenetic factors in colorectal cancerBRCA gene mutations in cancer

Assessing the link between BACH1/FANCJ and MLH1 in DNA crosslink repair

Cantor, Sharon B., Xie, Jenny·2010·Environmental and Molecular Mutagenesis

Abstract

FANCJ (also known as BRIP1 or BACH1) is a DNA helicase that was originally identified by its direct interaction with the hereditary breast cancer protein, BRCA1. Similar to BRCA1, FANCJ function is essential for DNA repair and breast cancer suppression. FANCJ is also mutated in the cancer prone syndrome Fanconi anemia, for which patient cells are characterized by extreme sensitivity to agents that generate DNA interstand crosslinks. Unexpectedly, correction of the interstrand crosslink sensitivity of FANCJ‐null patient cells did not require the FANCJ/BRCA1 interaction. Instead, FANCJ binding to the mismatch repair protein, MLH1 was required. Given this finding, we address the role of FANCJ and MLH1 in DNA crosslink processing and how their functions could be linked in checkpoint and/or recombination pathways. We speculate that after DNA crosslink processing and repair, the FANCJ/MLH1 interaction is critical for recovery and restart of replication. These ideas are considered and summarized in this review. Environ. Mol. Mutagen., 2010. © 2010 Wiley‐Liss, Inc.

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Crossref · 10.1002/em.20568

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  • The P47A mutant is enzymatically inactive in vitro, similar to K52R or A349P, which dominantly disrupted DNA repair when expressed in cells.

    “Consistent with this idea, the P47A mutant is enzyme inactive in vitro, similar to the helicace-inactive FANCJ mutant species, K52R, or FA-associated A349P, which dominantly disrupted DNA repair when expressed in cells [41,42].”
  • Cancer in patients carrying P47A or M299I may have involved a dominant negative effect of the mutant FANCJ proteins.

    “Thus, cancer in these patients may have been related to the dominant negative effect of these mutant FANCJ proteins.”

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Authors
Cantor, S. B., & Xie, J.
Affiliations
University of Massachusetts Chan Medical School (US)
Corresponding author
Cantor, Sharon B.
Venue
Environmental and Molecular Mutagenesis
Publisher
Wiley
Published
2010-07
Volume
51
Issue
6
Pages
500-507
ISSN
  • 0893-6692 (ISSN-L)
  • 1098-2280
OpenAlex
W2085383063
Cited by
29
References
59
Citations by year
2026: 1 · 2025: 2 · 2024: 4 · 2023: 1 · 2021: 1 · 2020: 3 · 2019: 1 · 2016: 4 · 2015: 1 · 2014: 3 · 2012: 4
FWCI
0.22
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental and Molecular Mutagenesis (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Cancer Institute (R01CA129514)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Genetic factors in colorectal cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › BRCA gene mutations in cancer
Keywords
FANCJ, BACH1, BRIP1, MLH1, interstrand cross-links, DNA crosslink repair, Fanconi anemia, BRCA1, DNA helicase, DNA mismatch repair, replication restart, DNA damage checkpoint, homologous recombination, breast cancer susceptibility
MeSH terms
MutL Protein Homolog 1, Breast Neoplasms, DNA Damage, DNA Repair, Female, Humans, Mutation, Nuclear Proteins, BRCA1 Protein, Adaptor Proteins, Signal Transducing, Basic-Leucine Zipper Transcription Factors, Fanconi Anemia Complementation Group Proteins

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