Demethylzeylasteral inhibits proliferation, migration, and invasion through FBXW7/c‐Myc axis in gastric cancer. Issue 3 (3rd June 2021)

• Record Type: Journal Article
• Authors: Li, Yongsen; Su, Yongyue; Zhao, Yuzu; Hu, Xiaosong; Zhao, Gaichao; He, Jiang; Wan, Sicheng; Lü, Muhan; Cui, Hongjuan
• Is Part Of: MedComm. Volume 2:Issue 3(2022)
• Page Start: 467
• Page End: 480
• Publication Date: 2021-06-03
• Subjects: chemosensitivity -- c‐Myc -- demethylzeylasteral -- FBXW7 -- gastric cancer; 610
• DOI: 10.1002/mco2.73
• Languages: English
• ISSNs: 2688-2663

Abstract

Abstract: Gastric cancer (GC) is one of the most familiar malignancy in the digestive system. Demethylzeylasteral (Dem), a natural functional monomer extracted from Tripterygium wilfordii Hook F, shows anti‐tumor effects in a variety of cancers, including GC, however, with the underlying mechanism poorly understood. In our study, we show that Dem inhibits the proliferation, migration, and invasion of GC cells, which are mediated by down‐regulating c‐Myc protein levels. Mechanistically, Dem reduces the stability of c‐Myc by up‐regulating FBXW7, an E3 ubiquitin ligase. Moreover, in xenograft tumor model experiment, Dem also inhibits GC, which depends on suppressing c‐Myc expression. Finally, Dem enhances GC cell chemosensitivity to the combination treatment of 5‐Fluorouracil (5‐Fu) and doxorubicin (DOX) in vitro. Together, Dem exerts anti‐neoplastic activities through destabilizing and suppressing c‐Myc, establishing a theory foundation for using it in future treatment of GC. Abstract : Schematic diagram of mechanism of demethylzeylasteral (a natural functional monomer) treatment in gastric cancer. Demethylzeylasteral promotes the degradation of c‐Myc through up‐regulating the expression level of FBXW7 (an E3 ubiquitin ligase) and consequent ubiquitylization of c‐Myc, which in turn inhibits cell proliferation, migration and invasion, and therefore, depresses the growth of gastric cancer.