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- W2568300053 abstract "Chondrosarcoma, the second-most frequent primary bone malignancy, is generally more resistant to conventional chemotherapy and radiotherapy. Therefore, the development of an effective adjuvant therapy is necessary. Recently, targeting the epigenetic regulator such as bromodomain and extraterminal domain (BET) proteins has achieved great success. For instance, the bromodomain inhibitor JQ1 has been shown to inhibit the growth of several cancer cells both in vitro and in vivo. Herein, we demonstrated that JQ1 significantly inhibited chondrosarcoma cell growth and colony formation. JQ1 also induced marked G1-phase cell cycle arrest coincided with the up-regulation of p21WAF1/CIP1, p27Kip1, and Cyclin D1 expression, and the down-regulation of Cyclin E2 expression. Moreover, JQ1 induced the premature senescence of SW 1353 cells, and that prolong treatment of JQ1 caused cell apoptosis. Mechanistically, the JQ1-induced cell growth inhibition was correlated with the suppression of c-Myc and Bcl-xL, which are the prime genes for cell cycle control and anti-apoptosis. Furthermore, we demonstrated that p21 negatively regulated the expression of c-Myc and Bcl-xL upon JQ1 treatment, and that the growth inhibition of SW 1353 and Hs 819.T cells and induction of p21 were predominantly regulated by the LATS1/YAP signaling but not through a p53-dependent manner. In conclusion, we disclosed a novel mechanism that JQ1 inhibits cell proliferation, induces cell senescence and apoptosis of chondrosarcoma cells through the regulation of the YAP/p21/c-Myc/Bcl-xL signaling axis. J. Cell. Biochem. 118: 2182–2192, 2017. © 2017 Wiley Periodicals, Inc." @default.
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- W2568300053 date "2017-04-18" @default.
- W2568300053 modified "2023-10-18" @default.
- W2568300053 title "The BET Bromodomain Inhibitor JQ1 Suppresses Chondrosarcoma Cell Growth via Regulation of YAP/p21/c-Myc Signaling" @default.
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- W2568300053 doi "https://doi.org/10.1002/jcb.25863" @default.
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