| Literature DB >> 30297361 |
Hongzhi Wang1,2, Weilong Zhong1,2, Jianmin Zhao3, Heng Zhang1,2, Qiang Zhang1,2, Yuan Liang1, Shuang Chen1, Huijuan Liu1, Shumin Zong1, Yixuan Tian1,2, Honggang Zhou1,2, Tao Sun4,2, Yanrong Liu4,5, Cheng Yang4,2.
Abstract
Oleanolic acid exhibits extensive pharmacologic activities and takes significant antitumor effects. Its pharmacologic mechanism, however, still remained to be further clarified. In this study, we demonstrated that oleanolic acid attenuated the migration and invasion abilities, resulting in the suppression of the epithelial-mesenchymal transition (EMT) process in liver cancer cells, and inhibited the tumor growth of the peritoneal lymphocytes-bearing mice. We further proved that inducible nitric oxide synthase (iNOS) may be the potential target of oleanolic acid. We confirmed that oleanolic acid could promote the dimerization of iNOS, activating it, and subsequently increasing the production of nitric oxide. Further experiments indicated that oleanolic acid promoted the nitration of specific proteins and consequently suppressed their EMT-related biological functions. Furthermore, it has been confirmed that oleanolic acid enhanced the antitumor effects of regorafenib in liver cancer treatment. These results deepened our understanding of the pharmacologic mechanism of the antitumor effect oleanolic acid, and the importance of nitric oxide synthetase as a therapeutic target for liver cancer treatment. ©2018 American Association for Cancer Research.Entities:
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Year: 2018 PMID： 30297361 DOI： 10.1158/1535-7163.MCT-18-0448
Source DB: PubMed Journal: Mol Cancer Ther ISSN： 1535-7163 Impact factor: 6.261