PMID- 21725613 OWN - NLM STAT- MEDLINE DCOM- 20120301 LR - 20211203 IS - 1791-2431 (Electronic) IS - 1021-335X (Linking) VI - 26 IP - 5 DP - 2011 Nov TI - Growth inhibition by NVP-BEZ235, a dual PI3K/mTOR inhibitor, in hepatocellular carcinoma cell lines. PG - 1273-9 LID - 10.3892/or.2011.1370 [doi] AB - Dysregulation of the phosphatidylinositol-3-kinase (PI3K)/mammalian target of rapamycin (mTOR) pathway frequently occurs in human tumors, and is therefore considered to be a good molecular target for treatment. In hepatocellular carcinoma (HCC), overexpression of p-Akt and decrease of PTEN expression have been reported. NVP-BEZ235 is a novel dual inhibitor of PI3K and mTOR; however, its effect on HCC has not been documented. Consequently, we investigated the effects of NVP-BEZ235 on the PLC/PRF/5, HLE, JHH7 and HepG2 HCC cell lines in vitro and in vivo. NVP-BEZ235 decreased the levels of p-Akt and p-p70S6K and inhibited cell proliferation in all HCC cell lines in a dose-dependent manner. Flow cytometric analysis revealed that inhibition of cell proliferation by NVP-BEZ235 was accompanied by G1 arrest in all cell lines, and that NVP-BEZ235 induced apoptosis in PLC/PRF/5 and HLE cells. Tumor growth was suppressed without body weight loss when NVP-BEZ235 was orally administered to JHH-7 tumor-bearing mice for 11 days. These results suggest that NVP-BEZ235 is a potential new candidate for targeted HCC therapy. FAU - Masuda, Mitsuhiro AU - Masuda M AD - Section for Cancer Immunotherapy, Investigative Treatment Division, Research Center for Innovative Oncology, National Cancer Center Hospital East, Kashiwa, Chiba, Japan. FAU - Shimomura, Manami AU - Shimomura M FAU - Kobayashi, Ken AU - Kobayashi K FAU - Kojima, Shuji AU - Kojima S FAU - Nakatsura, Tetsuya AU - Nakatsura T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110701 PL - Greece TA - Oncol Rep JT - Oncology reports JID - 9422756 RN - 0 (Imidazoles) RN - 0 (Phosphoinositide-3 Kinase Inhibitors) RN - 0 (Quinolines) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.1.137 (Phosphatidylinositol 3-Kinase) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - RUJ6Z9Y0DT (dactolisib) SB - IM MH - Animals MH - Carcinoma, Hepatocellular/*drug therapy/genetics/metabolism/pathology MH - Cell Growth Processes/drug effects MH - Cell Line, Tumor MH - Female MH - Humans MH - Imidazoles/*pharmacology MH - Liver Neoplasms/*drug therapy/genetics/metabolism/pathology MH - Mice MH - Mice, Inbred BALB C MH - Mice, Nude MH - Phosphatidylinositol 3-Kinase/genetics/metabolism MH - *Phosphoinositide-3 Kinase Inhibitors MH - Quinolines/*pharmacology MH - TOR Serine-Threonine Kinases/*antagonists & inhibitors/metabolism MH - Xenograft Model Antitumor Assays EDAT- 2011/07/05 06:00 MHDA- 2012/03/02 06:00 CRDT- 2011/07/05 06:00 PHST- 2011/05/17 00:00 [received] PHST- 2011/06/16 00:00 [accepted] PHST- 2011/07/05 06:00 [entrez] PHST- 2011/07/05 06:00 [pubmed] PHST- 2012/03/02 06:00 [medline] AID - 10.3892/or.2011.1370 [doi] PST - ppublish SO - Oncol Rep. 2011 Nov;26(5):1273-9. doi: 10.3892/or.2011.1370. Epub 2011 Jul 1.