PMID- 32685028 OWN - NLM STAT- MEDLINE DCOM- 20210503 LR - 20210503 IS - 1838-7640 (Electronic) IS - 1838-7640 (Linking) VI - 10 IP - 17 DP - 2020 TI - Therapeutic potential of targeting MKK3-p38 axis with Capsaicin for Nasopharyngeal Carcinoma. PG - 7906-7920 LID - 10.7150/thno.45191 [doi] AB - Background: Capsaicin is an active compound found in plants of the Capsicum genus; it has a range of therapeutic benefits, including anti-tumor effects. Here we aimed to delineate the inhibitory effects of capsaicin on nasopharyngeal carcinoma (NPC). Methods: The anti-cancer effects of capsaicin were confirmed in NPC cell lines and xenograft mouse models, using CCK-8, clonogenic, wound-healing, transwell migration and invasion assays. Co-immunoprecipitation, western blotting and pull-down assays were used to determine the effects of capsaicin on the MKK3-p38 axis. Cell proliferation and EMT marker expression were monitored in MKK3 knockdown (KD) or over-expression NPC cell lines treated with or without capsaicin. Finally, immunohistochemistry was performed on NPC specimens from NPC patients (n = 132) and the clinical relevance was analyzed. Results: Capsaicin inhibited cell proliferation, mobility and promoted apoptosis in NPC cells. Then we found that capsaicin directly targets p38 for dephosphorylation. As such, MKK3-induced p38 activation was inhibited by capsaicin. Furthermore, we found that capsaicin-induced inhibition of cell motility was mediated by fucokinase. Xenograft models demonstrated the inhibitory effects of capsaicin treatment on NPC tumor growth in vivo, and analysis of clinical NPC samples confirmed that MKK3 phosphorylation was associated with NPC tumor growth and lymphoid node metastasis. Conclusions: The MKK3-p38 axis represents a potential therapeutic target for capsaicin. MKK3 phosphorylation might serve as a biomarker to identify NPC patients most likely to benefit from adjunctive capsaicin treatment. CI - (c) The author(s). FAU - Chiang, Chengyao AU - Chiang C AD - Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University International Cancer Center, Department of Cell Biology and Genetics, School of Medicine, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China. FAU - Zhang, Min AU - Zhang M AD - Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University International Cancer Center, Department of Cell Biology and Genetics, School of Medicine, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China. FAU - Wang, Dian AU - Wang D AD - Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410013, China. FAU - Xiao, Tian AU - Xiao T AD - Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University International Cancer Center, Department of Cell Biology and Genetics, School of Medicine, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China. FAU - Zhu, Lizhi AU - Zhu L AD - Institute of Translation Medicine, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China. FAU - Chen, Kai AU - Chen K AD - School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China. FAU - Huang, Junrong AU - Huang J AD - Institute of Translation Medicine, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518035, China. FAU - Huang, Jingying AU - Huang J AD - Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University International Cancer Center, Department of Cell Biology and Genetics, School of Medicine, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China. FAU - Zhu, Jiang AU - Zhu J AD - Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University International Cancer Center, Department of Cell Biology and Genetics, School of Medicine, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China. FAU - Li, Li AU - Li L AD - Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University International Cancer Center, Department of Cell Biology and Genetics, School of Medicine, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China. FAU - Chen, Cheng AU - Chen C AD - Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University International Cancer Center, Department of Cell Biology and Genetics, School of Medicine, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China. FAU - Chen, Yangchao AU - Chen Y AD - School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, NT, Hong Kong. FAU - Hu, Hongyi AU - Hu H AD - Department of Otolaryngology, Peking University Shenzhen Hospital, Shenzhen, 518036, China. FAU - Jiang, Wenqi AU - Jiang W AD - Sun Yet-sen University Cancer Center, Guangzhou, China. FAU - Zou, Yongdong AU - Zou Y AD - Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University International Cancer Center, Department of Cell Biology and Genetics, School of Medicine, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China. FAU - Wang, Ting AU - Wang T AD - Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, 410013, China. AD - Guangzhou Henvcom Bioscience Co Ltd, Guangzhou, 510535, China. FAU - Zheng, Duo AU - Zheng D AD - Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University International Cancer Center, Department of Cell Biology and Genetics, School of Medicine, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518055, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200624 PL - Australia TA - Theranostics JT - Theranostics JID - 101552395 RN - EC 2.7.1.- (Phosphotransferases (Alcohol Group Acceptor)) RN - EC 2.7.1.52 (fucokinase) RN - EC 2.7.12.2 (MAP Kinase Kinase 3) RN - EC 2.7.12.2 (MAP2K3 protein, human) RN - S07O44R1ZM (Capsaicin) SB - IM MH - Animals MH - Capsaicin/*pharmacology/therapeutic use MH - Cell Line, Tumor MH - Cell Movement/drug effects MH - Cell Proliferation/drug effects MH - Epithelial-Mesenchymal Transition/drug effects MH - Female MH - Gene Knockdown Techniques MH - HEK293 Cells MH - Humans MH - MAP Kinase Kinase 3/genetics/*metabolism MH - MAP Kinase Signaling System/*drug effects/genetics MH - Male MH - Mice MH - Middle Aged MH - Nasopharyngeal Carcinoma/*drug therapy/pathology MH - Nasopharyngeal Neoplasms/*drug therapy/pathology MH - Neoplasm Invasiveness/pathology/prevention & control MH - Phosphorylation/drug effects MH - Phosphotransferases (Alcohol Group Acceptor)/genetics/metabolism MH - Xenograft Model Antitumor Assays PMC - PMC7359099 OTO - NOTNLM OT - Capsaicin OT - FUK OT - MKK3-p38 OT - cell mobility OT - nasopharyngeal carcinoma COIS- Competing Interests: The authors have declared that no competing interest exists. EDAT- 2020/07/21 06:00 MHDA- 2021/05/04 06:00 PMCR- 2020/01/01 CRDT- 2020/07/21 06:00 PHST- 2020/02/22 00:00 [received] PHST- 2020/06/10 00:00 [accepted] PHST- 2020/07/21 06:00 [entrez] PHST- 2020/07/21 06:00 [pubmed] PHST- 2021/05/04 06:00 [medline] PHST- 2020/01/01 00:00 [pmc-release] AID - thnov10p7906 [pii] AID - 10.7150/thno.45191 [doi] PST - epublish SO - Theranostics. 2020 Jun 24;10(17):7906-7920. doi: 10.7150/thno.45191. eCollection 2020.