PMID- 23178381 OWN - NLM STAT- MEDLINE DCOM- 20130422 LR - 20191210 IS - 1872-7786 (Electronic) IS - 0009-2797 (Linking) VI - 201 IP - 1-3 DP - 2013 Jan 25 TI - Aspidin PB, a phloroglucinol derivative, induces apoptosis in human hepatocarcinoma HepG2 cells by modulating PI3K/Akt/GSK3beta pathway. PG - 1-8 LID - S0009-2797(12)00240-2 [pii] LID - 10.1016/j.cbi.2012.11.005 [doi] AB - Aspidin PB, a phloroglucinol derivative isolated from Dryopteris fragrans (L.) Schott, has been previously reported to exert high biological activities. In the present study, we analyzed the apoptotic mechanisms of aspidin PB on human hepatoma cell line, HepG2. Initially, aspidin PB was shown to inhibit the growth of HepG2 cells in a time and dose-dependent manner. After treatment with aspidin PB for 72 h, 48 h and 24 h using MTT assay, the IC(50) values were 10.59 muM, 20.86 muM and 46.59 muM, respectively. Aspidin PB was capable to induce apoptosis, as measured by mitochondrial membrane potential (DeltaPsim), acridine orange (AO) staining and propidium iodide (PI)/annexin V-FITC double staining. To further explore the signaling pathway of aspidin PB-mediated apoptosis, we examined PI3K/Akt related proteins. Western blot analysis revealed that aspidin PB inhibited PI3K expression, phosphorylation of Ser473 Akt and Ser9 GSK3beta followed by up-regulation of nonsteroidal anti-inflammatory drugs activated gene-1 (NAG-1) expression. Similarly, the effects of aspidin PB on PI3K, Akt, GSK3beta, NAG-1 expression were abolished by treatment with the PI3K inhibitor, wortmannin. Taken together, our data suggested that the PI3K/Akt/GSK3beta signal pathway may represent one of the major mechanisms of the effects of aspidin PB on human hepatocarcinoma cells. CI - Copyright (c) 2012 Elsevier Ireland Ltd. All rights reserved. FAU - Sun, Yao AU - Sun Y AD - Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China. FAU - Gao, Chang AU - Gao C FAU - Luo, Meng AU - Luo M FAU - Wang, Wei AU - Wang W FAU - Gu, Chengbo AU - Gu C FAU - Zu, Yuangang AU - Zu Y FAU - Li, Ji AU - Li J FAU - Efferth, Thomas AU - Efferth T FAU - Fu, Yujie AU - Fu Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121121 PL - Ireland TA - Chem Biol Interact JT - Chemico-biological interactions JID - 0227276 RN - 0 (Androstadienes) RN - 0 (Phosphoinositide-3 Kinase Inhibitors) RN - 0 (Protein Kinase Inhibitors) RN - DHD7FFG6YS (Phloroglucinol) RN - EC 2.7.11.1 (GSK3B protein, human) RN - EC 2.7.11.1 (Glycogen Synthase Kinase 3 beta) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.11.26 (Glycogen Synthase Kinase 3) RN - XVA4O219QW (Wortmannin) SB - IM MH - Androstadienes/pharmacology MH - Apoptosis/*drug effects MH - Carcinoma, Hepatocellular/*metabolism MH - Cell Proliferation/drug effects MH - Flow Cytometry MH - Glycogen Synthase Kinase 3/*metabolism MH - Glycogen Synthase Kinase 3 beta MH - Hep G2 Cells MH - Humans MH - Liver Neoplasms/*drug therapy/metabolism/pathology MH - Membrane Potential, Mitochondrial/drug effects MH - Microscopy, Confocal MH - Phloroglucinol/*analogs & derivatives/pharmacology MH - Phosphatidylinositol 3-Kinases/*metabolism MH - Phosphoinositide-3 Kinase Inhibitors MH - Protein Kinase Inhibitors/pharmacology MH - Proto-Oncogene Proteins c-akt/*metabolism MH - Signal Transduction/drug effects MH - Wortmannin EDAT- 2012/11/28 06:00 MHDA- 2013/04/23 06:00 CRDT- 2012/11/27 06:00 PHST- 2012/07/21 00:00 [received] PHST- 2012/10/15 00:00 [revised] PHST- 2012/11/06 00:00 [accepted] PHST- 2012/11/27 06:00 [entrez] PHST- 2012/11/28 06:00 [pubmed] PHST- 2013/04/23 06:00 [medline] AID - S0009-2797(12)00240-2 [pii] AID - 10.1016/j.cbi.2012.11.005 [doi] PST - ppublish SO - Chem Biol Interact. 2013 Jan 25;201(1-3):1-8. doi: 10.1016/j.cbi.2012.11.005. Epub 2012 Nov 21.