PMID- 35723362 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220716 IS - 1467-3045 (Electronic) IS - 1467-3037 (Print) IS - 1467-3037 (Linking) VI - 44 IP - 4 DP - 2022 Apr 1 TI - Chrysophanol Suppresses Cell Growth via mTOR/PPAR-alpha Regulation and ROS Accumulation in Cultured Human Tongue Squamous Carcinoma SAS Cells. PG - 1528-1538 LID - 10.3390/cimb44040104 [doi] AB - Oral cancer, a type of head and neck cancer, can pose a significant risk of death unless diagnosed and treated early. Alternative treatments are urgently needed owing to the high mortality rate, limitations of conventional treatments, and many complications. The anthraquinone compound chrysophanol acts as a tumor suppressor on some types of cancer cells. To date, it has not been clarified how chrysophanol affects human tongue squamous carcinoma. This study was aimed to examine the effects of chrysophanol on oral cancer treatment. The results show that chrysophanol caused cell death, reduced the expression of the mammalian target of rapamycin (mTOR)/peroxisome proliferator-activated receptor-alpha (PPAR-alpha), and increased reactive oxygen species (ROS) production. We also used two ion chelators, deferoxamine (DFO) and liproxstatin-1 (Lipro), to further determine whether chrysophanol inhibits cell growth and regulates mTOR/PPAR-alpha expression and ROS production, both of which are involved in iron homeostasis. The results show that DFO and Lipro reversed the increase in cell death, downregulation of mTOR/PPAR-alpha, and decrease in ROS accumulation. In conclusion, chrysophanol inhibits the growth of oral squamous cell carcinoma cells by modulating mTOR/PPAR-alpha and by causing ROS accumulation. FAU - Hsu, Po-Chih AU - Hsu PC AD - Department of Dentistry, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 231, Taiwan. AD - Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei 114, Taiwan. FAU - Hsu, Chia-Chen AU - Hsu CC AD - Department of Dentistry, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 231, Taiwan. AD - Department of Research, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 231, Taiwan. FAU - Hsia, Yi-Jan AU - Hsia YJ AD - Department of Dentistry, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 231, Taiwan. FAU - Kuo, Chan-Yen AU - Kuo CY AUID- ORCID: 0000-0002-5702-5730 AD - Department of Research, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 231, Taiwan. LA - eng GR - TCRD-TPE-110-RT-3/Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation and New Taipei City, Taiwan/ PT - Journal Article DEP - 20220401 PL - Switzerland TA - Curr Issues Mol Biol JT - Current issues in molecular biology JID - 100931761 PMC - PMC9164035 OTO - NOTNLM OT - chrysophanol OT - mammalian target of rapamycin (mTOR) OT - oral squamous cell carcinoma (OSCC) OT - peroxisome proliferator-activated receptor-alpha (PPAR-alpha) OT - reactive oxygen species (ROS) COIS- The authors declare that there are no conflict of interest regarding the publication of this paper. EDAT- 2022/06/21 06:00 MHDA- 2022/06/21 06:01 PMCR- 2022/04/01 CRDT- 2022/06/20 08:24 PHST- 2022/02/23 00:00 [received] PHST- 2022/03/29 00:00 [revised] PHST- 2022/04/01 00:00 [accepted] PHST- 2022/06/20 08:24 [entrez] PHST- 2022/06/21 06:00 [pubmed] PHST- 2022/06/21 06:01 [medline] PHST- 2022/04/01 00:00 [pmc-release] AID - cimb44040104 [pii] AID - cimb-44-00104 [pii] AID - 10.3390/cimb44040104 [doi] PST - epublish SO - Curr Issues Mol Biol. 2022 Apr 1;44(4):1528-1538. doi: 10.3390/cimb44040104.