Abstract:
:The concept of 'BRCAness' defines the pathogenesis and vulnerability of multiple cancers. The canonical definition of BRCAness is a defect in homologous recombination repair, mimicking BRCA1 or BRCA2 loss. In turn, BRCA-deficient cells utilize error-prone DNA-repair pathways, causing increased genomic instability, which may be responsible for their sensitivity to DNA damaging agents and poly-(ADP)-ribose polymerase inhibitors (PARPis). However, recent work has expanded the mechanistic basis of BRCAness, to include defects in replication fork protection (RFP). Here, we broaden the definition of BRCAness to include RFP and regulatory mechanisms that cause synthetic lethality with PARPis. We highlight these recent discoveries, which include mechanisms of RFP regulation, DNA damage checkpoint proteins, as well as kinases that regulate BRCA1/2 function. Importantly, many of these emerging mechanisms may be targeted for inhibition with small molecule inhibitors, thus inducing BRCAness in a much larger subset of BRCA-proficient tumors, with significant translational potential.
journal_name
Trends Cell Bioljournal_title
Trends in cell biologyauthors
Byrum AK,Vindigni A,Mosammaparast Ndoi
10.1016/j.tcb.2019.06.005subject
Has Abstractpub_date
2019-09-01 00:00:00pages
740-751issue
9eissn
0962-8924issn
1879-3088pii
S0962-8924(19)30104-7journal_volume
29pub_type
杂志文章,评审abstract::The anaphase-promoting complex/cyclosome (APC/C) is an evolutionarily conserved ubiquitin ligase that controls cell cycle progression through spatiotemporally regulated proteolysis. Although recent studies revealed its postmitotic function, our knowledge of the role of APC/C beyond cell cycle regulation in the biology...
journal_title:Trends in cell biology
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journal_title:Trends in cell biology
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