Anti-tumor effect of evodiamine by inducing Akt-mediated apoptosis in hepatocellular carcinoma

Abstract

BackgroundEvodiamine is an alkaloid extracted from Euodia rutaecarpa (Juss.) Benth. There is little information about the mechanisms of evodiamine on the apoptosis of hepatocellular carcinoma (HCC). Materials and methodsA xenograft model and CCK8 assay were used to investigate the anti-HCC effect of evodiamine. The effect of evodiamine on apoptosis was evaluated by DAPI staining and flow cytometry. Western blot analyses and immunohistochemistry were processed to assess the protein expressions of Akt and apoptotic proteins. ResultsEvodiamine suppressed tumor growth, improved the expression of cleaved-caspase3 and decreased tumor specific growth factor (TSGF) and alpha fetoprotein (AFP) activities. Furthermore, evodiamine inhibited cell viability and induced cell cycle arrest. DAPI staining revealed nuclear condensation in evodiamine-treated groups. Meanwhile, evodiamine increased the number of apoptotic cells. Furthermore, evodiamine suppressed Akt and regulated apoptotic proteins in HepG2 cells. Evodiamine decreased p-Akt levels activated by SC79, which led to the increase of bax/bcl-2 and cleaved-caspase3. ConclusionsOur findings suggested that evodiamine could exert anti-HCC effect through inducing Akt-mediated apoptosis. Evodiamine has the potential to be a therapeutic medicine for HCCs.