PMID- 27056897 OWN - NLM STAT- MEDLINE DCOM- 20171211 LR - 20211204 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 7 IP - 19 DP - 2016 May 10 TI - Icariside II, a natural mTOR inhibitor, disrupts aberrant energy homeostasis via suppressing mTORC1-4E-BP1 axis in sarcoma cells. PG - 27819-37 LID - 10.18632/oncotarget.8538 [doi] AB - The aberrant energy homeostasis that characterized by high rate of energy production (glycolysis) and energy consumption (mRNA translation) is associated with the development of cancer. As mammalian target of rapamycin (mTOR) is a critical regulator of aberrant energy homeostasis, it is an attractive target for anti-tumor intervention. The flavonoid compound Icariside II (IS) is a natural mTOR inhibitor derived from Epimedium. Koreanum. Herein, we evaluate the effect of IS on aberrant energy homeostasis. The reduction of glycolysis and mRNA translation in U2OS (osteosarcoma), S180 (fibrosarcoma) and SW1535 (chondrosarcoma) cells observed in our study, indicate that, IS inhibits aberrant energy homeostasis. This inhibition is found to be due to suppression of mammalian target of rapamycin complex 1 (mTORC1)-eukaryotic translation initiation factor 4E-binding protein 1 (4E-BP1) axis through blocking the assembly of mTORC1. Furthermore, IS inhibits the cap-dependent translation of c-myc through mTORC1-4E-BP1 axis which links the relationship between mRNA translation and glycolysis. Inhibition of aberrant energy homeostasis by IS, contributes to its in vitro and in vivo anti-proliferation activity. These data indicate that IS disrupts aberrant energy homeostasis of sarcoma cells through suppression of mTORC1-4E-BP1 axis, providing a novel mechanism of IS to inhibit cell proliferation in sarcoma cells. FAU - Zhang, Chao AU - Zhang C AD - State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, China. FAU - Yang, Lei AU - Yang L AD - State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, China. FAU - Geng, Ya-di AU - Geng YD AD - State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, China. FAU - An, Fa-Liang AU - An FL AD - State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, China. FAU - Xia, Yuan-Zheng AU - Xia YZ AD - State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, China. FAU - Guo, Chao AU - Guo C AD - State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, China. FAU - Luo, Jian-Guang AU - Luo JG AD - State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, China. FAU - Zhang, Lu-Yong AU - Zhang LY AD - State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, China. FAU - Guo, Qing-Long AU - Guo QL AD - State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, China. FAU - Kong, Ling-Yi AU - Kong LY AD - State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, China. LA - eng PT - Journal Article PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (Cell Cycle Proteins) RN - 0 (Drugs, Chinese Herbal) RN - 0 (EIF4EBP1 protein, human) RN - 0 (Flavonoids) RN - 0 (MYC protein, human) RN - 0 (Phosphoproteins) RN - 0 (Proto-Oncogene Proteins c-myc) RN - 0 (RICTOR protein, human) RN - 0 (RNA, Small Interfering) RN - 0 (RPTOR protein, human) RN - 0 (Rapamycin-Insensitive Companion of mTOR Protein) RN - 0 (Regulatory-Associated Protein of mTOR) RN - 113558-15-9 (baohuoside I) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Adaptor Proteins, Signal Transducing/genetics/*metabolism MH - Animals MH - Cell Cycle Proteins MH - Cell Line, Tumor MH - Cell Proliferation/drug effects MH - Drugs, Chinese Herbal/*pharmacology/therapeutic use MH - Epimedium/*chemistry MH - Flavonoids/*pharmacology/therapeutic use MH - Glycolysis/drug effects MH - Homeostasis/*drug effects MH - Humans MH - Male MH - Mice MH - Mice, Inbred ICR MH - Phosphoproteins/genetics/*metabolism MH - Protein Biosynthesis/drug effects MH - Proto-Oncogene Proteins c-myc/genetics/*metabolism MH - RNA Interference MH - RNA, Small Interfering MH - Rapamycin-Insensitive Companion of mTOR Protein/genetics MH - Regulatory-Associated Protein of mTOR/genetics MH - Sarcoma/*drug therapy MH - Signal Transduction/drug effects MH - TOR Serine-Threonine Kinases/*antagonists & inhibitors/metabolism MH - Xenograft Model Antitumor Assays PMC - PMC5053690 OTO - NOTNLM OT - Icariside II OT - aberrant energy homeostasis OT - glycolysis OT - mRNA translation OT - mTORC1-4E-BP1 axis COIS- The authors declare no competing financial interests. EDAT- 2016/04/09 06:00 MHDA- 2017/12/12 06:00 PMCR- 2016/05/10 CRDT- 2016/04/09 06:00 PHST- 2015/07/20 00:00 [received] PHST- 2016/03/23 00:00 [accepted] PHST- 2016/04/09 06:00 [entrez] PHST- 2016/04/09 06:00 [pubmed] PHST- 2017/12/12 06:00 [medline] PHST- 2016/05/10 00:00 [pmc-release] AID - 8538 [pii] AID - 10.18632/oncotarget.8538 [doi] PST - ppublish SO - Oncotarget. 2016 May 10;7(19):27819-37. doi: 10.18632/oncotarget.8538.