PMID- 28366631 OWN - NLM STAT- MEDLINE DCOM- 20170704 LR - 20211204 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 487 IP - 3 DP - 2017 Jun 3 TI - The anti-hepatocellular carcinoma cell activity by a novel mTOR kinase inhibitor CZ415. PG - 494-499 LID - S0006-291X(17)30633-2 [pii] LID - 10.1016/j.bbrc.2017.03.156 [doi] AB - Dysregulation of mammalian target of rapamycin (mTOR) in hepatocellular carcinoma (HCC) represents a valuable treatment target. Recent studies have developed a highly-selective and potent mTOR kinase inhibitor, CZ415. Here, we showed that nM concentrations of CZ415 efficiently inhibited survival and induced apoptosis in HCC cell lines (HepG2 and Huh-7) and primary-cultured human HCC cells. Meanwhile, CZ415 inhibited proliferation of HCC cells, more potently than mTORC1 inhibitors (rapamycin and RAD001). CZ415 was yet non-cytotoxic to the L02 human hepatocytes. Mechanistic studies showed that CZ415 disrupted assembly of mTOR complex 1 (mTORC1) and mTORC2 in HepG2 cells. Meanwhile, activation of mTORC1 (p-S6K1) and mTORC2 (p-AKT, Ser-473) was almost blocked by CZ415. In vivo studies revealed that oral administration of CZ415 significantly suppressed HepG2 xenograft tumor growth in severe combined immuno-deficient (SCID) mice. Activation of mTORC1/2 was also largely inhibited in CZ415-treated HepG2 tumor tissue. Together, these results show that CZ415 blocks mTORC1/2 activation and efficiently inhibits HCC cell growth in vitro and in vivo. CI - Copyright (c) 2017 Elsevier Inc. All rights reserved. FAU - Zhang, Wei AU - Zhang W AD - Department of Gastrointestinal Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou medical College, Hangzhou, China; Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou medical College, Hangzhou, China. FAU - Chen, Bingyu AU - Chen B AD - Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou medical College, Hangzhou, China. FAU - Zhang, Yu AU - Zhang Y AD - Clinical Research Institute, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou medical College, Hangzhou, China. FAU - Li, Kaiqiang AU - Li K AD - Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou medical College, Hangzhou, China. FAU - Hao, Ke AU - Hao K AD - Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou medical College, Hangzhou, China. FAU - Jiang, Luxi AU - Jiang L AD - Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou medical College, Hangzhou, China. FAU - Wang, Ying AU - Wang Y AD - Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou medical College, Hangzhou, China. FAU - Mou, Xiaozhou AU - Mou X AD - Clinical Research Institute, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou medical College, Hangzhou, China. FAU - Xu, Xiaodong AU - Xu X AD - Department of Gastrointestinal Pancreatic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou medical College, Hangzhou, China. Electronic address: drxxklzjsry@163.com. FAU - Wang, Zhen AU - Wang Z AD - Research Center of Blood Transfusion Medicine, Education Ministry Key Laboratory of Laboratory Medicine, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou medical College, Hangzhou, China; Clinical Research Institute, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou medical College, Hangzhou, China. Electronic address: drzwklzjsry@163.com. LA - eng PT - Journal Article DEP - 20170330 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Antineoplastic Agents) RN - 0 (CZ415 compound) RN - 0 (Cyclic S-Oxides) RN - 0 (Phenylurea Compounds) RN - 0 (Protein Kinase Inhibitors) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Antineoplastic Agents/chemical synthesis/chemistry/*pharmacology MH - Apoptosis/drug effects MH - Carcinoma, Hepatocellular/drug therapy/*enzymology/*pathology MH - Cell Cycle/drug effects MH - Cell Proliferation/drug effects MH - Cyclic S-Oxides/chemical synthesis/chemistry/*pharmacology MH - Dose-Response Relationship, Drug MH - Drug Screening Assays, Antitumor MH - Hep G2 Cells MH - Humans MH - Liver Neoplasms/drug therapy/*enzymology/*pathology MH - Phenylurea Compounds/chemical synthesis/chemistry/*pharmacology MH - Protein Kinase Inhibitors/chemical synthesis/chemistry/*pharmacology MH - Structure-Activity Relationship MH - TOR Serine-Threonine Kinases/*antagonists & inhibitors/metabolism MH - Tumor Cells, Cultured OTO - NOTNLM OT - Apoptosis OT - CZ415 OT - Hepatocellular carcinoma OT - Mammalian target of rapamycin (mTOR) EDAT- 2017/04/04 06:00 MHDA- 2017/07/05 06:00 CRDT- 2017/04/04 06:00 PHST- 2017/03/23 00:00 [received] PHST- 2017/03/29 00:00 [accepted] PHST- 2017/04/04 06:00 [pubmed] PHST- 2017/07/05 06:00 [medline] PHST- 2017/04/04 06:00 [entrez] AID - S0006-291X(17)30633-2 [pii] AID - 10.1016/j.bbrc.2017.03.156 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2017 Jun 3;487(3):494-499. doi: 10.1016/j.bbrc.2017.03.156. Epub 2017 Mar 30.