International Journal of Molecular Sciences Article Calcium Channels as Novel Therapeutic Targets for Ovarian Cancer Stem Cells 1,2, 1,2, 3, 1 1 Heejin Lee y , Jun Woo Kim y, Dae Kyung Kim y, Dong Kyu Choi , Seul Lee , Ji Hoon Yu 1,2, Oh-Bin Kwon 1, Jungsul Lee 4, Dong-Seok Lee 2,* , Jae Ho Kim 3,* and Sang-Hyun Min 1,* 1 New Drug Development Center, DGMIF, 80 Chumbok-ro, Dong-gu, Daegu 41061, Korea;
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[email protected] (O.-B.K.) 2 School of Life Sciences and Biotechnology, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu 41566, Korea 3 Department of Physiology, School of Medicine, Pusan National University, Yangsan 50612, Korea;
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[email protected] (S.-H.M.) These authors contributed equally to this work. y Received: 5 March 2020; Accepted: 24 March 2020; Published: 27 March 2020 Abstract: Drug resistance in epithelial ovarian cancer (EOC) is reportedly attributed to the existence of cancer stem cells (CSC), because in most cancers, CSCs still remain after chemotherapy. To overcome this limitation, novel therapeutic strategies are required to prevent cancer recurrence and chemotherapy-resistant cancers by targeting cancer stem cells (CSCs). We screened an FDA-approved compound library and found four voltage-gated calcium channel blockers (manidipine, lacidipine, benidipine, and lomerizine) that target ovarian CSCs.