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首页> 外文期刊>Journal of biochemical and molecular toxicology >In vitro therapeutic effects of abemaciclib on triple-negative breast cancer cells
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In vitro therapeutic effects of abemaciclib on triple-negative breast cancer cells

机译：In vitro therapeutic effects of abemaciclib on triple-negative breast cancer cells

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The cyclin-dependent kinases 4 and 6 have led to a significant improvement in the treatment of hormone-receptor-positive breast cancer. However, the therapeutic potential of abemaciclib in triple-negative breast cancer (TNBC) has not been definitively elucidated. Therefore, the objective of this study was to investigate abe-maciclib mediated antiproliferative effects on MDA-MB-231 and MDA-MB-468 TNBC and MCF-10A cell line through annexin V, cell cycle, caspase-3, reverse transcription-polymerase chain reaction analysis, acridine orange, and DAPI staining, for the first time. In addition, the autophagy-related cell death was assessed by autophagy-LC3 assay and acidic vesicular organelles staining. Our findings demonstrated that abemaciclib treatment resulted in significant apoptotic cell death in TNBC cells via G0/G1 arrest, chromatin condensation, the upregulation of caspase-3 and Bax levels, and the downregulation of Bcl-2. However, the formation of a large number of cytoplasmic vacuoles was not associated with autophagy. Therefore, abemaciclib treatment could be an effective treatment for TNBC. However, further studies are needed to elucidate the molecular mechanism of abemaciclib-induced apoptotic as well as atypical cell death derived from lysosomes in TNBC.

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