PMID- 27997894 OWN - NLM STAT- MEDLINE DCOM- 20170208 LR - 20211204 IS - 1421-9778 (Electronic) IS - 1015-8987 (Linking) VI - 40 IP - 6 DP - 2016 TI - Zedoarondiol Inhibits Platelet-Derived Growth Factor-Induced Vascular Smooth Muscle Cells Proliferation via Regulating AMP-Activated Protein Kinase Signaling Pathway. PG - 1506-1520 LID - 10.1159/000453201 [doi] AB - BACKGROUND/AIMS: Vascular smooth muscle cells (VSMCs) proliferation contributes significantly to atherosclerosis and in-stent restenosis. Platelet-derived growth factor-BB (PDGF-BB) plays a vital role in VSMCs proliferation. Zedoarondiol, a sesquiterpene lactone compound, has an anti-inflammatory activity. However, the role of zedoarondiol in PDGF-BB-mediated VSMCs proliferation remains unclear. In this study, we investigated the effects of zedoarondiol on PDGF-BB-induced VSMCs proliferation and explored the possible mechanisms. METHODS: The inhibitory effects of zedoarondiol on PDGF-BB-induced VSMCs proliferation were evaluated by direct cell counting and the Cell Counting Kit-8 (CCK-8) assay. DNA synthesis was examined by bromodeoxyuridine (BrdU) incorporation assay. Cell cycle was assessed by propidium iodide staining. Western blotting was performed to determine the expression of cyclin-dependent kinase 2 (CDK2), cyclin E, p53, p21, total and phosphorylated adenosine monophosphate-activated protein kinase (AMPK), acetyl CoA carboxylase (ACC), mammalian target of rapamycin (mTOR), and p70 ribosomal protein S6 kinase (p70S6K). RESULTS: Zedoarondiol suppressed PDGF-BB-induced VSMCs proliferation and DNA synthesis, and induced cell cycle arrest in G0/G1 phase. In addition, zedoarondiol activated AMPK and ACC, inhibited the phosphorylation of mTOR and p70S6K, increased the expression of p53 and p21, and decreased the expression of CDK2 and cyclin E. Compound C (an AMPK inhibitor) abrogated, whereas 5-aminoimidazole-4-carboxamide 1-beta-ribofuranoside (AICAR, an AMPK activator) enhanced zedoarondiol-mediated inhibition of VSMCs proliferation and DNA synthesis. CONCLUSION: Zedoarondiol inhibits PDGF-BB-induced VSMCs proliferation via AMPK-mediated down-regulation of the mTOR/p70S6K pathway and up-regulation of the p53/p21 pathway. These findings suggest that zedoarondiol might be a promising compound against atherosclerosis and in-stent restenosis. CI - (c) 2016 The Author(s) Published by S. Karger AG, Basel. FAU - Mao, Huimin AU - Mao H AD - Graduate School, Beijing University of Chinese Medicine, Beijing, China. FAU - Tao, Tianqi AU - Tao T FAU - Song, Dandan AU - Song D FAU - Liu, Mi AU - Liu M FAU - Wang, Xiaoren AU - Wang X FAU - Liu, Xiuhua AU - Liu X FAU - Shi, Dazhuo AU - Shi D LA - eng PT - Journal Article DEP - 20161221 PL - Germany TA - Cell Physiol Biochem JT - Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology JID - 9113221 RN - 0 (Cyclin-Dependent Kinase Inhibitor p21) RN - 0 (Lactones) RN - 0 (Proto-Oncogene Proteins c-sis) RN - 0 (Sesquiterpenes) RN - 0 (Tumor Suppressor Protein p53) RN - 0 (zedoarondiol) RN - 1B56C968OA (Becaplermin) RN - 9007-49-2 (DNA) RN - EC 2.7.11.1 (Ribosomal Protein S6 Kinases, 70-kDa) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - EC 2.7.11.22 (Cyclin-Dependent Kinase 2) RN - EC 2.7.11.31 (AMP-Activated Protein Kinases) SB - IM MH - AMP-Activated Protein Kinases/*metabolism MH - Animals MH - Apoptosis/drug effects MH - Becaplermin MH - Cell Cycle Checkpoints MH - Cell Proliferation/drug effects MH - Cell Survival/drug effects MH - Cyclin-Dependent Kinase 2/metabolism MH - Cyclin-Dependent Kinase Inhibitor p21/metabolism MH - DNA/biosynthesis MH - Down-Regulation/drug effects MH - Enzyme Activation/drug effects MH - G1 Phase/drug effects MH - Humans MH - Lactones/chemistry/*pharmacology MH - Male MH - Models, Biological MH - Muscle, Smooth, Vascular/*cytology MH - Myocytes, Smooth Muscle/*cytology/drug effects/*metabolism MH - Proto-Oncogene Proteins c-sis/*pharmacology MH - Rats, Sprague-Dawley MH - Resting Phase, Cell Cycle/drug effects MH - Ribosomal Protein S6 Kinases, 70-kDa/metabolism MH - Sesquiterpenes/chemistry/*pharmacology MH - Signal Transduction/*drug effects MH - TOR Serine-Threonine Kinases/metabolism MH - Tumor Suppressor Protein p53/metabolism MH - Up-Regulation/drug effects EDAT- 2016/12/21 06:00 MHDA- 2017/02/09 06:00 CRDT- 2016/12/21 06:00 PHST- 2016/11/09 00:00 [accepted] PHST- 2016/12/21 06:00 [pubmed] PHST- 2017/02/09 06:00 [medline] PHST- 2016/12/21 06:00 [entrez] AID - 000453201 [pii] AID - 10.1159/000453201 [doi] PST - ppublish SO - Cell Physiol Biochem. 2016;40(6):1506-1520. doi: 10.1159/000453201. Epub 2016 Dec 21.