PMID- 29956727 OWN - NLM STAT- MEDLINE DCOM- 20181126 LR - 20220410 IS - 1791-2423 (Electronic) IS - 1019-6439 (Linking) VI - 53 IP - 3 DP - 2018 Sep TI - Polyphyllin I inhibits invasion and epithelial-mesenchymal transition via CIP2A/PP2A/ERK signaling in prostate cancer. PG - 1279-1288 LID - 10.3892/ijo.2018.4464 [doi] AB - Polyphyllin I (PPI) is a natural compound extracted from the rhizomes of Paris polyphylla and has been used to treat fevers and headaches in China. In the present study, the antitumor activity of PPI in prostate cancer (PC) cells was evaluated. At low doses, PPI decreased proliferation, invasion and epithelial-mesenchymal transition (EMT) in PC cells. PPI decreased the expression of matrix metalloproteinase 7 (MMP7), an enzyme that is critical for tumor metastasis. PPI also decreased the expression of Snail and vimentin, which are EMT-associated factors. Additionally, PPI suppressed AP-1 transcriptional activity and AP-1 binding to the MMP7 and vimentin promoters. The results demonstrated that PPI downregulated the phosphorylation of extracellular signaling‑related kinase (ERK), which is upstream modulator of AP-1. The results of the present study demonstrated that PPI may inhibit the cancerous inhibitor of protein phosphatase 2A (CIP2A)/protein phosphatase 2A (PP2A)/ERK axis, downregulate the expression of MMP7, vimentin, and Snail, and suppress tumor invasion and EMT. A PC xenograft mouse model was employed and the results revealed that PPI may decrease tumor growth and weight. Additionally, PPI may inhibit proliferating cell nuclear antigen expression and CIP2A/PP2A/ERK signaling pathway in PPI-treated tumors. Therefore, the results of the present study suggest that PPI may suppress the growth, invasion and EMT of PC cells via inhibition of CIP2A/PP2A/ERK signaling axis. As a result, PPI may be a novel target for the treatment of PC. FAU - Liu, Xuewen AU - Liu X AD - School of Basic Sciences, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China. FAU - Sun, Zhiting AU - Sun Z AD - Laboratory of Molecular Target Therapy of Cancer, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China. FAU - Deng, Jikun AU - Deng J AD - School of Basic Sciences, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China. FAU - Liu, Jun AU - Liu J AD - School of Basic Sciences, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China. FAU - Ma, Kaihuai AU - Ma K AD - School of Basic Sciences, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China. FAU - Si, Yuan AU - Si Y AD - School of Basic Sciences, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China. FAU - Zhang, Te AU - Zhang T AD - Laboratory of Molecular Target Therapy of Cancer, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China. FAU - Feng, Tingting AU - Feng T AD - School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China. FAU - Liu, Ying AU - Liu Y AD - School of Basic Sciences, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China. FAU - Tan, Yan AU - Tan Y AD - School of Basic Sciences, Hubei University of Medicine, Shiyan, Hubei 442000, P.R. China. LA - eng PT - Journal Article DEP - 20180629 PL - Greece TA - Int J Oncol JT - International journal of oncology JID - 9306042 RN - 0 (Antineoplastic Agents) RN - 0 (Autoantigens) RN - 0 (CIP2A protein, human) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (Membrane Proteins) RN - 0 (polyphyllin I) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) RN - EC 3.1.3.16 (Protein Phosphatase 2) RN - K49P2K8WLX (Diosgenin) SB - IM MH - Animals MH - Antineoplastic Agents/*pharmacology/therapeutic use MH - Autoantigens/metabolism MH - Cell Line, Tumor MH - Cell Movement/drug effects MH - Cell Proliferation/drug effects MH - Diosgenin/*analogs & derivatives/pharmacology/therapeutic use MH - Down-Regulation MH - Drug Evaluation, Preclinical MH - Epithelial-Mesenchymal Transition/*drug effects MH - Extracellular Signal-Regulated MAP Kinases/metabolism MH - Humans MH - Intracellular Signaling Peptides and Proteins MH - Male MH - Melanthiaceae/chemistry MH - Membrane Proteins/metabolism MH - Mice MH - Mice, Nude MH - Neoplasm Invasiveness/prevention & control MH - Phosphorylation/drug effects MH - Prostatic Neoplasms/*drug therapy/pathology MH - Protein Phosphatase 2/metabolism MH - Signal Transduction/*drug effects MH - Xenograft Model Antitumor Assays EDAT- 2018/06/30 06:00 MHDA- 2018/11/27 06:00 CRDT- 2018/06/30 06:00 PHST- 2018/01/19 00:00 [received] PHST- 2018/06/01 00:00 [accepted] PHST- 2018/06/30 06:00 [pubmed] PHST- 2018/11/27 06:00 [medline] PHST- 2018/06/30 06:00 [entrez] AID - 10.3892/ijo.2018.4464 [doi] PST - ppublish SO - Int J Oncol. 2018 Sep;53(3):1279-1288. doi: 10.3892/ijo.2018.4464. Epub 2018 Jun 29.