PMID- 27313493 OWN - NLM STAT- MEDLINE DCOM- 20171107 LR - 20220310 IS - 1449-2288 (Electronic) IS - 1449-2288 (Linking) VI - 12 IP - 7 DP - 2016 TI - Fenofibrate Suppresses Oral Tumorigenesis via Reprogramming Metabolic Processes: Potential Drug Repurposing for Oral Cancer. PG - 786-98 LID - 10.7150/ijbs.13851 [doi] AB - One anticancer strategy suggests targeting mitochondrial metabolism to trigger cell death through slowing down energy production from the Warburg effect. Fenofibrate is a clinical lipid-lowering agent and an effective anticancer drug. In the present study, we demonstrate that fenofibrate provided novel mechanisms for delaying oral tumor development via the reprogramming of metabolic processes. Fenofibrate induced cytotoxicity by decreasing oxygen consumption rate (OCR) that was accompanied with increasing extracellular acidification rate (ECAR) and reducing ATP content. Moreover, fenofibrate caused changes in the protein expressions of hexokinase II (HK II), pyruvate kinase, pyruvate dehydrogenase, and voltage-dependent anion channel (VDAC), which are associated with the Warburg effect. In addition, fenofibrate reprogrammed the metabolic pathway by interrupting the binding of HK II to VDAC. In an oral cancer mouse model, fenofibrate exhibited both preventive and therapeutic efficacy on oral tumorigenesis. Fenofibrate administration suppressed the incidence rate of tongue lesions, reduced the tumor sizes, decreased the tumor multiplicity, and decreased the immunoreactivities of VDAC and mTOR. The molecular mechanisms involved in fenofibrate's ability to delay tumor development included the down-regulation of mTOR activity via TSC1/2-dependent signaling through activation of AMPK and inactivation of Akt, or via a TSC1/2-independent pathway through direct suppression of raptor. Our findings provide a molecular rationale whereby fenofibrate exerts anticancer and additional beneficial effects for the treatment of oral cancer patients. FAU - Jan, Chia-Ing AU - Jan CI AD - 1. Department of Pathology, China Medical University and Hospital, Taichung, Taiwan, ROC; 2. Department of Pathology, China Medical University and Beigang Hospital, Yunlin, Taiwan.TOC. FAU - Tsai, Ming-Hsui AU - Tsai MH AD - 3. Department of Otolaryngology, China Medical University and Hospital, Taichung, Taiwan, ROC. FAU - Chiu, Chang-Fang AU - Chiu CF AD - 4. Department of Hematology Oncology, China Medical University and Hospital, Taichung, Taiwan, ROC. FAU - Huang, Yi-Ping AU - Huang YP AD - 5. Department of Physiology, College of Medicine, China Medical University, Taichung, Taiwan, ROC. FAU - Liu, Chia Jen AU - Liu CJ AD - 6. Department of Biochemistry, College of Medicine, China Medical University, Taichung, Taiwan, ROC. FAU - Chang, Nai Wen AU - Chang NW AD - 6. Department of Biochemistry, College of Medicine, China Medical University, Taichung, Taiwan, ROC. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160515 PL - Australia TA - Int J Biol Sci JT - International journal of biological sciences JID - 101235568 RN - 0 (Antineoplastic Agents) RN - 8L70Q75FXE (Adenosine Triphosphate) RN - EC 2.7.1.1 (Hexokinase) RN - U202363UOS (Fenofibrate) SB - IM MH - Adenosine Triphosphate/metabolism MH - Animals MH - Antineoplastic Agents/*therapeutic use MH - Blotting, Western MH - Cell Line, Tumor MH - Cell Proliferation/drug effects MH - Cell Survival/drug effects/genetics MH - Cell Transformation, Neoplastic/drug effects/genetics MH - Fenofibrate/*therapeutic use MH - Hexokinase/metabolism MH - Humans MH - Immunohistochemistry MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mouth Neoplasms/*drug therapy/*metabolism MH - Oxygen Consumption/drug effects PMC - PMC4910598 OTO - NOTNLM OT - Fenofibrate OT - Metabolic reprogramming OT - Oral cancer OT - Warburg effect OT - mTOR COIS- Competing Interests: The authors have declared that no competing interest exists. EDAT- 2016/06/18 06:00 MHDA- 2017/11/08 06:00 PMCR- 2016/01/01 CRDT- 2016/06/18 06:00 PHST- 2015/09/14 00:00 [received] PHST- 2016/04/01 00:00 [accepted] PHST- 2016/06/18 06:00 [entrez] PHST- 2016/06/18 06:00 [pubmed] PHST- 2017/11/08 06:00 [medline] PHST- 2016/01/01 00:00 [pmc-release] AID - ijbsv12p0786 [pii] AID - 10.7150/ijbs.13851 [doi] PST - epublish SO - Int J Biol Sci. 2016 May 15;12(7):786-98. doi: 10.7150/ijbs.13851. eCollection 2016.