期刊
JOURNAL OF RADIATION RESEARCH
卷 57, 期 -, 页码 I18-I24出版社
OXFORD UNIV PRESS
DOI: 10.1093/jrr/rrw032
关键词
BRCA1; NHEJ; HR; Ku70; 80; DNA-PKcs; breast cancer
资金
- NCI NIH HHS [P01 CA092584, R01 CA162804] Funding Source: Medline
Heritable mutations in the tumor suppressor gene BRCA1 increase a woman's lifetime risk of developing breast and ovarian cancer. BRCA1's tumor suppressor function is directly linked to its myriad of functions in the cellular response to DNA double-strand breaks (DSBs). BRCA1 interacts with an extensive array of DNA damage responsive proteins and plays important roles in DSB repair, mediated by the homologous recombination pathway, and in the activation of cell cycle checkpoints. However, the role of BRCA1 in the other two DSB repair pathways, classical non-homologous end-joining (C-NHEJ) and alternative NHEJ (A-NHEJ), remains unclear. In this review, we will discuss the current literature on BRCA1's potential role(s) in modulating both C-NHEJ and A-NHEJ. We also present a model showing that BRCA1 contributes to genomic maintenance by promoting precise DNA repair across all cell cycle phases via the direct modulation of DNA end-joining.
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