Cited by 396DNA Repair MechanismsBRCA gene mutations in cancerPARP inhibition in cancer therapy

BACH1 is critical for homologous recombination and appears to be the Fanconi anemia gene product FANCJ

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Litman, Rachel, Peng, Min, Jin, Zhe, Zhang, Fan, Zhang, Junran, Powell, Simon, Andreassen, Paul R., Cantor, Sharon B.·2005·Cancer Cell

Abstract

We showed in this study that cells deficient of the BRCA1-associated BACH1 helicase, also known as BRIP1, failed to elicit homologous recombination (HR) after DNA double-stranded breaks (DSBs). BACH1-deficient cells were also sensitive to mitomycin C (MMC) and underwent MMC-induced chromosome instability. Moreover, we identified a homozygous nonsense mutation in BACH1 in a FA-J patient-derived cell line and could not detect BACH1 protein in this cell line. Expression of wild-type BACH1 in this cell line reduced the accumulation of cells at G2/M phases following exposure to DNA crosslinkers, a characteristic of Fanconi anemia (FA) cells. These results support the conclusion that BACH1 is FANCJ.

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Crossref · 10.1016/j.ccr.2005.08.004

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  • R798x is predicted to produce a truncated protein, but no detectable protein product was found.

    “The R798x mutation predicts a truncated protein, but a detectable protein product was not found [26].”
  • The most common FANCJ germline mutant allele is R798x.

    “Of all the FANCJ germline mutations, the most common mutant allele is FANCJ R798x.”
  • Bi-allelic mutations in BACH1/FANCJ/BRIP1 or PALB2/FANCN cause the FA subtypes FA-J or FA-N, respectively.

    “Similarly, inheriting bi-allelic mutations in BACH1/FANCJ/ BRIP1 or PALB2/FANCN genes results in the FA subtypes FA-J or FA-N, respectively (Figure 1) [26–30].”
  • FANCJ mediates a subset of BRCA1 functions in double-strand break repair.

    “Using a DNA double-strand break-induced recombination assay [75], siRNA depletion of FANCJ was shown to substantially [26] or partially reduce homologous recombination [38], supporting the idea that FANCJ mediates a subset of BRCA1 functions in double-strand break repair.”
  • siRNA depletion of FANCJ substantially or partially reduced homologous recombination.

    “Using a DNA double-strand break-induced recombination assay [75], siRNA depletion of FANCJ was shown to substantially [26] or partially reduce homologous recombination [38], supporting the idea that FANCJ mediates a subset of BRCA1 functions in double-strand break repair.”

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Authors
Litman, R., Peng, M., Jin, Z., Zhang, F., Zhang, J., Powell, S., Andreassen, P. R., & Cantor, S. B.
Affiliations
  • University of Massachusetts Chan Medical School (US)
  • Cincinnati Children's Hospital Medical Center (US)
  • Washington University in St. Louis (US)
Corresponding author
Cantor, Sharon B.
Venue
Cancer Cell
Publisher
Elsevier BV
Published
2005-09
Volume
8
Issue
3
Pages
255-265
ISSN
1535-6108 (ISSN-L)
OpenAlex
W2109630092
Cited by
396
References
58
Citations by year
2026: 9 · 2025: 10 · 2024: 6 · 2023: 14 · 2022: 8 · 2021: 19 · 2020: 15 · 2019: 12 · 2018: 9 · 2017: 17 · 2016: 21 · 2015: 20 · 2014: 17 · 2013: 18 · 2012: 29
FWCI
10.35
Type
journal article
Language
en
Open access
Locations
  • Cancer Cell (publishedVersion)
  • PubMed (publishedVersion)
  • The Journal of the American Medical Association (JAMA) Network (American Medical Association) (submittedVersion)
Funders
  • Mary Kay Foundation
  • University of Massachusetts Medical School
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › BRCA gene mutations in cancer
  • Health Sciences › Medicine › Oncology › PARP inhibition in cancer therapy
Keywords
BACH1, BRIP1, FANCJ, Fanconi anemia, homologous recombination, DNA double-strand breaks, mitomycin C sensitivity, chromosomal instability, G2/M cell cycle arrest, nonsense mutation, helicase
MeSH terms
Breast Neoplasms, Cell Division, Chromosome Mapping, Fanconi Anemia, Female, Humans, Recombination, Genetic, Transcription Factors, Transfection, G2 Phase, Leucine Zippers, Genes, Reporter, DNA Primers, Cell Line, Tumor, Green Fluorescent Proteins, Basic-Leucine Zipper Transcription Factors, Fanconi Anemia Complementation Group Proteins

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