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- W3147655761 abstract "The identification of biomarker-driven targeted therapies for patients with triple negative breast cancer (TNBC) remains a major clinical challenge, due to a lack of specific targets. Here, we show that cyclin E, a major regulator of G1 to S transition, is deregulated in TNBC and is associated with mutations in DNA repair genes (e.g., BRCA1/2). Breast cancers with high levels of cyclin E not only have a higher prevalence of BRCA1/2 mutations, but also are associated with the worst outcomes. Using several in vitro and in vivo model systems, we show that TNBCs that harbor either mutations in BRCA1/2 or overexpression of cyclin E are very sensitive to the growth inhibitory effects of AZD-1775 (Wee 1 kinase inhibitor) when used in combination with MK-4837 (PARP inhibitor). Combination treatment of TNBC cell lines with these two agents results in synergistic cell killing due to induction of replicative stress, downregulation of DNA repair and cytokinesis failure that results in increased apoptosis. These findings highlight the potential clinical application of using cyclin E and BRCA mutations as biomarkers to select only those patients with the highest replicative stress properties that may benefit from combination treatment with Wee 1 kinase and PARP inhibitors." @default.
- W3147655761 created "2021-04-13" @default.
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- W3147655761 date "2021-04-01" @default.
- W3147655761 modified "2023-10-10" @default.
- W3147655761 title "Targeting Replicative Stress and DNA Repair by Combining PARP and Wee1 Kinase Inhibitors Is Synergistic in Triple Negative Breast Cancers with Cyclin E or BRCA1 Alteration" @default.
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- W3147655761 doi "https://doi.org/10.3390/cancers13071656" @default.
- W3147655761 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8036262" @default.
- W3147655761 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33916118" @default.
- W3147655761 hasPublicationYear "2021" @default.
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