PMID- 30710454 OWN - NLM STAT- MEDLINE DCOM- 20200424 LR - 20210730 IS - 1476-5381 (Electronic) IS - 0007-1188 (Print) IS - 0007-1188 (Linking) VI - 176 IP - 7 DP - 2019 Apr TI - Potent effects of dioscin against hepatocellular carcinoma through regulating TP53-induced glycolysis and apoptosis regulator (TIGAR)-mediated apoptosis, autophagy, and DNA damage. PG - 919-937 LID - 10.1111/bph.14594 [doi] AB - BACKGROUND AND PURPOSE: Dioscin shows potent effects against cancers. We aimed to elucidate its pharmacological effects and mechanisms of action on hepatocellular carcinoma (HCC) in vivo and in vitro. EXPERIMENTAL APPROACH: Effects of dioscin were investigated in SMMC7721 and HepG2 cells, diethylnitrosamine-induced primary liver cancer in rats, and cell xenografts in nude mice. Isobaric tags for relative and absolution quantitation (iTRAQ)-based proteomics was used to find dioscin's targets and investigate its mechanism. KEY RESULTS: In SMMC7721 and HepG2 cells dioscin markedly inhibited cell proliferation and migration, induced apoptosis, autophagy, and DNA damage. It inhibited DEN-induced primary liver cancer in rats, markedly changed body weights and restored levels of alpha fetoprotein, alanine transaminase, aspartate transaminase, gamma-glutamyltransferase, alkaline phosphatase, and Ki67. It also inhibited growth of xenografts in mice. In SMMC7721 cells, 191 differentially expressed proteins were found after dioscin, based on iTRAQ-based assay. TP53-inducible glycolysis and apoptosis regulator (TIGAR) was identified as being significantly down-regulated by dioscin. Dioscin induced cell apoptosis, autophagy, and DNA damage via increasing expression levels of p53, cleaved PARP, Bax, cleaved caspase-3/9, Beclin-1, and LC3 and suppressing those of Bcl-2, p-Akt, p-mammalian target of rapamycin (mTOR), CDK5, p-ataxia telangiectasia-mutated gene (ATM). The transfection of TIGAR siRNA into SMMC7721 cells and xenografts in nude mice further confirmed that the potent activity of dioscin against HCC is evoked by adjusting TIGAR-mediated inhibition of p53, Akt/mTOR, and CDK5/ATM pathways. CONCLUSIONS AND IMPLICATIONS: The data suggest that dioscin has potential as a therapeutic, and TIGAR as a drug target for treating HCC. CI - (c) 2019 The British Pharmacological Society. FAU - Mao, Zhang AU - Mao Z AD - College of Pharmacy, Dalian Medical University, Dalian, China. FAU - Han, Xu AU - Han X AD - College of Pharmacy, Dalian Medical University, Dalian, China. FAU - Chen, Dahong AU - Chen D AD - College of Pharmacy, Dalian Medical University, Dalian, China. FAU - Xu, Youwei AU - Xu Y AD - College of Pharmacy, Dalian Medical University, Dalian, China. FAU - Xu, Lina AU - Xu L AD - College of Pharmacy, Dalian Medical University, Dalian, China. FAU - Yin, Lianhong AU - Yin L AD - College of Pharmacy, Dalian Medical University, Dalian, China. FAU - Sun, Huijun AU - Sun H AD - College of Pharmacy, Dalian Medical University, Dalian, China. FAU - Qi, Yan AU - Qi Y AD - College of Pharmacy, Dalian Medical University, Dalian, China. FAU - Fang, Lingling AU - Fang L AD - College of Pharmacy, Dalian Medical University, Dalian, China. FAU - Liu, Kexin AU - Liu K AD - College of Pharmacy, Dalian Medical University, Dalian, China. FAU - Peng, Jinyong AU - Peng J AUID- ORCID: 0000-0002-6265-2667 AD - College of Pharmacy, Dalian Medical University, Dalian, China. AD - Key Laboratory for Basic and Applied Research on Pharmacodynamic Substances of Traditional Chinese Medicine of Liaoning Province, Dalian Medical University, Dalian, China. AD - National-Local Joint Engineering Research Center for Drug Development (R&D) of Neurodegenerative Diseases, Dalian Medical University, Dalian, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190318 PL - England TA - Br J Pharmacol JT - British journal of pharmacology JID - 7502536 RN - 0 (Antineoplastic Agents) RN - 0 (Apoptosis Regulatory Proteins) RN - 0 (RNA, Small Interfering) RN - 0 (Tumor Suppressor Protein p53) RN - 3B95U4OLWV (dioscin) RN - EC 3.1.3.2 (Phosphoric Monoester Hydrolases) RN - K49P2K8WLX (Diosgenin) SB - IM EIN - Br J Pharmacol. 2019 Dec;176(24):4788. PMID: 31950491 EIN - Br J Pharmacol. 2021 Aug;178(16):3354-3355. PMID: 34327709 MH - Animals MH - Antineoplastic Agents/*pharmacology/*therapeutic use MH - Apoptosis/drug effects MH - Apoptosis Regulatory Proteins/genetics MH - Autophagy/drug effects MH - Carcinoma, Hepatocellular/*drug therapy/genetics/metabolism/pathology MH - Cell Line MH - Cell Survival/drug effects MH - DNA Damage MH - Diosgenin/*analogs & derivatives/pharmacology/therapeutic use MH - Glycolysis/drug effects MH - Humans MH - Liver Neoplasms/*drug therapy/genetics/metabolism/pathology MH - Male MH - Mice, Inbred BALB C MH - Mice, Nude MH - Phosphoric Monoester Hydrolases/genetics MH - RNA, Small Interfering/genetics MH - Rats, Wistar MH - Tumor Suppressor Protein p53/metabolism PMC - PMC6433650 COIS- The authors declare no conflicts of interest. EDAT- 2019/02/03 06:00 MHDA- 2020/04/25 06:00 PMCR- 2020/04/01 CRDT- 2019/02/03 06:00 PHST- 2018/07/26 00:00 [received] PHST- 2018/12/05 00:00 [revised] PHST- 2018/12/18 00:00 [accepted] PHST- 2019/02/03 06:00 [pubmed] PHST- 2020/04/25 06:00 [medline] PHST- 2019/02/03 06:00 [entrez] PHST- 2020/04/01 00:00 [pmc-release] AID - BPH14594 [pii] AID - 10.1111/bph.14594 [doi] PST - ppublish SO - Br J Pharmacol. 2019 Apr;176(7):919-937. doi: 10.1111/bph.14594. Epub 2019 Mar 18.