Abstract
Gliomas account for the majority of primary malignant brain tumors around the world and are highly aggressive. Evodiamine is one of the main effective components of Evodia rutaecarpa, which can inhibit proliferation and promote apoptosis of tumor cells including glioma cells. The derivative of Evodiamine named WZY-321 was successfully developed, and exhibited significant cytotoxicity and could efficiently induce glioma cell apoptosis; however, the mechanism of WZY-321-induced glioma cell apoptosis is not clear. Our current studies showed that WZY-321 increased X-linked inhibitor of apoptosis-associated factor 1 (XAF1) expression in glioma cells, and up-regulated XAF1 resulted in glioma cell apoptosis. Moreover, WZY-321 treatment decreased miR-873 expression and increased lncRNA MTM expression in glioma cells, and down-regulated miR-873 or up-regulated MTM lead to glioma cell apoptosis. Mechanically, WZY-321 up-regulated XAF1 gene expression via MTM-decreased miR-873 expression, that bound to XAF1 3' UTR and decreased XAF1 mRNA levels. Taken together, these data indicate that WZY-321 triggers glioma cell apoptosis via XAF1 up-regulation caused by MTM-mediated miR-873 down-regulation.
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