Differential roles of BRCA1 and BRCA2 in the DNA damage response revealed by isogenic V79 mutant cell lines.

Abstract excerpt

This study aimed to establish a novel BRCA1 mutant cell line from Chinese hamster V79 cells and clarify the role of BRCA1 in the DNA damage response (DDR) by comparison with a BRCA2 mutant line, V-C8. Using CRISPR/Cas9 editing, we generated a hypomorphic BRCA1 mutant, designated B1-21, carrying a 27-bp in-frame deletion in exon 4. This mutation deletes nine amino acids within the RING domain. B1-21, V79, and V-C8...

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