Abstract
Previous evidence has shown that the increased expression of aurora kinase is closely related to melanoma progression and is an important therapeutic target in melanoma. Danusertib is an inhibitor of aurora kinase, and recent studies have shown that danusertib treatment induces autophagy in several types of cancer. Interestingly, autophagy plays a dual function in cancer as a pro-survival and anti-survival factor. In this study, we investigated the role of danusertib on the induction of autophagy in melanoma and determined the impact of autophagy induction on its anticancer activity against melanoma. Our results showed that danusertib can significantly inhibit melanoma growth by inducing cell cycle arrest and apoptosis. In addition, we demonstrated that danusertib treatment significantly inhibits the oncogenic Akt/mTOR signaling pathway and induces autophagy in melanoma cells. Furthermore, we identified that the inhibition of autophagy can enhance the inhibitory effects of danusertib on melanoma growth. Thus, the induction of autophagy by danusertib appears to be a survival mechanism in melanoma cells that may counteract its anticancer effects. These findings suggest a novel strategy to enhance the anticancer efficacy of danusertib in melanoma by blocking autophagy.
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The authors acknowledge the First-Class Discipline Construction Founded Project of Ningxia Medical University (NXYLXK2017A05) and the School of Clinical Medicine and Ningxia Medical University 2018 university-level scientific research project (XM2018152).
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Yuan-Yuan Shang and Weichao Li conceived and designed this study. Yuan-Yuan Shang and Nan Yu Xu were responsible for doing the main experimental. Li Xia, Ying-Yao Yu, Chun-mei Ma, and Ya-Ning Jiao were responsible for construction of mice model. Yuan-Yuan Shang, Yun-feng Li, and Jie Dang were jointly involving in extracting data and writing the manuscript.
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This research was approved by the Research Ethics Board of the General Hospital of Ningxia Medical University.
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Shang, YY., Yu, N., Xia, L. et al. Augmentation of danusertib’s anticancer activity against melanoma by blockage of autophagy. Drug Deliv. and Transl. Res. 10, 136–145 (2020). https://doi.org/10.1007/s13346-019-00668-5
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DOI: https://doi.org/10.1007/s13346-019-00668-5