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- W2016558818 abstract "Proceedings: AACR 102nd Annual Meeting 2011‐‐ Apr 2‐6, 2011; Orlando, FLThe phosphoinositide 3-kinase (PI3K) pathway is frequently activated in cancer, and is considered as a promising therapeutic target of cancer therapy. Since PI3K pathway mediates growth- and anti-apoptotic signals, inhibition of PI3K is expected to induce apoptosis and/or growth arrest in cancer cells. We previously developed Fluorescent Ubiquitination-based Cell Cycle Indicator (Fucci) system to enable real-time visualization of cell cycle progression in live cells. Taking advantage of Fucci system, we examined cell cycle progression after treatment of various PI3K inhibitors by using a time-lapse fluorescent microscope. As a result, we could visualize the induction of G1 arrest of cell cycle in breast cancer MCF-7 cells within 24 h after treatment with ZSTK474, and the G1 arrest lasted at least 48 h. Similar results were obtained after treatment with other PI3K inhibitors such as NVP-BEZ235 and GDC-0941. These results clearly indicate that PI3K inhibitors exert antitumor activity via a cytostatic mechanism by inducing G1 arrest of cell cycle.Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 102nd Annual Meeting of the American Association for Cancer Research; 2011 Apr 2-6; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2011;71(8 Suppl):Abstract nr 2655. doi:10.1158/1538-7445.AM2011-2655" @default.
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- W2016558818 date "2011-04-15" @default.
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- W2016558818 title "Abstract 2655: Visualization of G1 arrest of cell cycle induced by inhibition of PI-3 kinase in cancer cells: in vitro evaluations" @default.
- W2016558818 doi "https://doi.org/10.1158/1538-7445.am2011-2655" @default.
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