Cited by 88DNA Repair MechanismsBRCA gene mutations in cancerPARP inhibition in cancer therapy

BACH1 is a DNA repair protein supporting BRCA1 damage response

Peng, M, Litman, R, Jin, Z, Fong, G, Cantor, S B·2006·Oncogene

Abstract

The link between defects in BRCA1 and breast cancer development may be best understood by deciphering the role of associated proteins. BRCA1 associated C-terminal helicase (BACH1) interacts directly with the BRCA1 C-terminal BRCT repeats, which are important for BRCA1 DNA repair and are mutated in the majority of BRCA1 familial cancers. Thus, BACH1 is a likely candidate for mediating BRCA1 DNA repair and tumor suppression functions. Although previous evidence using overexpression of a dominant negative BACH1 has suggested that BACH1 is involved in BRCA1-DNA repair function, our results using BACH1 deficient cells provide direct evidence for involvement of BACH1 in DNA repair as well as for localizing BRCA1. Following DNA damage BACH1 is modified by phosphorylation, displays a BRCA1-like nuclear foci pattern and colocalizes with gamma-H2AX. Given that the BACH1/BRCA1 complex is unaltered by DNA damage and the intensity of BRCA1 foci is diminished in BACH1 deficient cells, BACH1 may serve to not only facilitate DNA repair, but also maintain BRCA1 in DNA damage foci.

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Crossref · 10.1038/sj.onc.1209257

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  • Reduced FANCJ levels correlated with delayed resolution of double-strand breaks, measured by persistent γ-H2AX foci after ionizing radiation.

    “Reduced levels of FANCJ correlated with delayed resolution of double-strand breaks as measured by persistent γ-H2AX foci formation following ionizing radiation [74].”
  • Unlike BRCA1- or BRCA2-deficient cells, FANCJ-deficient cells are only mildly sensitive to double-strand break-inducing agents such as ionizing radiation.

    “Consistent with this idea, unlike BRCA1- or BRCA2-deficient cells, FANCJ-deficient cells are only mildly sensitive to agents that induce double-strand breaks, such as ionizing radiation [74].”

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Authors
Peng, M., Litman, R., Jin, Z., Fong, G., & Cantor, S. B.
Affiliations
University of Massachusetts Chan Medical School (US)
Corresponding author
Cantor, S B
Venue
Oncogene
Published
2006-02-06
Volume
25
Issue
15
Pages
2245-2253
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W2009503121
Cited by
88
References
42
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 1 · 2021: 5 · 2020: 3 · 2019: 2 · 2018: 3 · 2017: 2 · 2016: 2 · 2015: 6 · 2014: 6 · 2013: 6 · 2012: 9
FWCI
4.21
Type
journal article
Language
en
Open access
closed
Locations
  • Oncogene (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship@UMassChan (submittedVersion)
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, BRCA1, DNA repair, DNA damage response, BRCA1 phosphorylation, γH2AX foci, tumor suppression, breast cancer, helicase
MeSH terms
Breast Neoplasms, Cell Survival, DNA Damage, DNA Repair, Female, Genes, Dominant, Histones, Humans, Ovarian Neoplasms, Phosphorylation, Retroviridae, Tumor Cells, Cultured, Lentivirus, BRCA1 Protein, Immunoprecipitation, Basic-Leucine Zipper Transcription Factors, Fanconi Anemia Complementation Group Proteins

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