PMID- 37081971 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230519 IS - 1663-9812 (Print) IS - 1663-9812 (Electronic) IS - 1663-9812 (Linking) VI - 14 DP - 2023 TI - Polyphyllin I suppresses the gastric cancer growth by promoting cancer cell ferroptosis. PG - 1145407 LID - 10.3389/fphar.2023.1145407 [doi] LID - 1145407 AB - Background: Ferroptosis is a new form of regulated cell death characterized by the accumulation of iron-dependent lipid peroxides and membrane damages. Recent studies have identified an important role for cancer cell ferroptosis in antitumor therapy. On the other hand, polyphyllin I (PPI) has been reported to exert antitumor effects on some types of cancers. However, it remains unknown whether or not PPI regulates cancer cell ferroptosis. Methods: Two types of human gastric cancer cells (AGS and MKN-45) were used to establish tumor xenograft models in nude mice that were treated with polyphyllin I (PPI) to observe tumor growth, while cells also were cultured for in vitro studies. Ferroptosis, based on the intracellular ROS/lipid ROS production and accumulation of ferrous ions, was detected using a fluorescence microscope and flow cytometer, while the expression of NRF2/FTH1 was measured using Western blotting assays. Results: Here we found that PPI inhibited the gastric cancer growth in vivo and in vitro while increasing the intracellular reactive oxygen species (ROS)/lipid peroxides and ferrous ions in the gastric cancer cells. PPI also decreased the levels of nuclear factor erythroid 2-related factor 2 (NRF2) and ferritin heavy chain 1 (FTH1) in gastric cancer cells in vitro. Moreover, liproxstain-1, an inhibitor of cell ferroptosis, mostly reversed the cell ferroptosis and tumor growth arrest induced by PPI. Finally, the effects of PPI on cancer cell ferroptosis were diminished by the overexpression of NRF2. Conclusion: For the first time, our results have demonstrated that PPI exerts its antitumor activity on the gastric cancer by, at least partially, inducing cancer cell ferroptosis via regulating NRF2/FTH1 pathway. These findings may be implicated for clinical replacement therapy of the gastric cancer. CI - Copyright (c) 2023 Zheng, Wang, Zhang, Chen, Liang, Liu, Qiu, Chen, Huang, Lu and Dai. FAU - Zheng, Fang AU - Zheng F AD - Section of Immunology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China. AD - Joint Immunology Program, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, China. FAU - Wang, Yeshu AU - Wang Y AD - Section of Immunology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China. FAU - Zhang, Qunfang AU - Zhang Q AD - Section of Immunology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China. AD - Joint Immunology Program, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, China. FAU - Chen, Qiuyuan AU - Chen Q AD - Section of Immunology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China. FAU - Liang, Chun-Ling AU - Liang CL AD - Section of Immunology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China. FAU - Liu, Huazhen AU - Liu H AD - Section of Immunology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China. FAU - Qiu, Feifei AU - Qiu F AD - Section of Immunology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China. FAU - Chen, Yuchao AU - Chen Y AD - Section of Immunology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China. FAU - Huang, Haiding AU - Huang H AD - Section of Immunology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China. AD - Joint Immunology Program, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, China. FAU - Lu, Weihui AU - Lu W AD - Section of Immunology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China. AD - Joint Immunology Program, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, China. FAU - Dai, Zhenhua AU - Dai Z AD - Section of Immunology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China. AD - Joint Immunology Program, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, Guangdong, China. LA - eng PT - Journal Article DEP - 20230404 PL - Switzerland TA - Front Pharmacol JT - Frontiers in pharmacology JID - 101548923 EIN - Front Pharmacol. 2023 May 03;14:1201715. PMID: 37205909 PMC - PMC10110865 OTO - NOTNLM OT - NRF2 OT - anticancer drug OT - ferroptosis OT - gastric cancer OT - polyphyllin I COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2023/04/21 06:41 MHDA- 2023/04/21 06:42 PMCR- 2023/04/04 CRDT- 2023/04/21 02:16 PHST- 2023/01/16 00:00 [received] PHST- 2023/03/27 00:00 [accepted] PHST- 2023/04/21 06:42 [medline] PHST- 2023/04/21 06:41 [pubmed] PHST- 2023/04/21 02:16 [entrez] PHST- 2023/04/04 00:00 [pmc-release] AID - 1145407 [pii] AID - 10.3389/fphar.2023.1145407 [doi] PST - epublish SO - Front Pharmacol. 2023 Apr 4;14:1145407. doi: 10.3389/fphar.2023.1145407. eCollection 2023.