| Literature DB >> 31263220 |
Ralph Scully1, Arvind Panday2, Rajula Elango2, Nicholas A Willis3.
Abstract
The major pathways of DNA double-strand break (DSB) repair are crucial for maintaining genomic stability. However, if deployed in an inappropriate cellular context, these same repair functions can mediate chromosome rearrangements that underlie various human diseases, ranging from developmental disorders to cancer. The two major mechanisms of DSB repair in mammalian cells are non-homologous end joining (NHEJ) and homologous recombination. In this Review, we consider DSB repair-pathway choice in somatic mammalian cells as a series of 'decision trees', and explore how defective pathway choice can lead to genomic instability. Stalled, collapsed or broken DNA replication forks present a distinctive challenge to the DSB repair system. Emerging evidence suggests that the 'rules' governing repair-pathway choice at stalled replication forks differ from those at replication-independent DSBs.Entities:
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Year: 2019 PMID: 31263220 PMCID: PMC7315405 DOI: 10.1038/s41580-019-0152-0
Source DB: PubMed Journal: Nat Rev Mol Cell Biol ISSN: 1471-0072 Impact factor: 113.915