- Mitotic Vulnerability in Triple-Negative Breast Cancer Associated with LIN9 Is Targetable with BET Inhibitors.
Mitotic Vulnerability in Triple-Negative Breast Cancer Associated with LIN9 Is Targetable with BET Inhibitors.
Cancer research (2017-08-16)
Jennifer M Sahni, Sylvia S Gayle, Bryan M Webb, Kristen L Weber-Bonk, Darcie D Seachrist, Salendra Singh, Steven T Sizemore, Nicole A Restrepo, Gurkan Bebek, Peter C Scacheri, Vinay Varadan, Matthew K Summers, Ruth A Keri
PMID28807940
摘要
Triple-negative breast cancers (TNBC) are highly aggressive, lack FDA-approved targeted therapies, and frequently recur, making the discovery of novel therapeutic targets for this disease imperative. Our previous analysis of the molecular mechanisms of action of bromodomain and extraterminal protein inhibitors (BETi) in TNBC revealed these drugs cause multinucleation, indicating BET proteins are essential for efficient mitosis and cytokinesis. Here, using live cell imaging, we show that BET inhibition prolonged mitotic progression and induced mitotic cell death, both of which are indicative of mitotic catastrophe. Mechanistically, the mitosis regulator
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