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Background  Hepatocellular carcinoma (HCC) is a common and aggressive cancer, and the treatment options are limited for patients with advanced HCC. Bufalin, the major digoxin-like component of the traditional Chinese medicine Chansu, exhibits significant anti-tumor activities in many tumor cell lines. In the present study, we investigated the effect of bufalin on the inhibition of an AKT-related signaling pathway, and examined the relationship between regulatory proteins and anti-tumor effects in hepatoma cells.    Methods  Proliferation, wound healing, transwell-migration/invasion and adhesion assays were performed in HCCLM3 and HepG2 cell lines. The protein levels of pAKT, AKT, pGSK3β, GSK3β, pβ-catenin, β-catenin, E-cadherin, MMP-9, and MMP-2 were measured by western blot analysis. E-Cadherin and β-catenin expression levels were also evaluated by immunofluorescence.    Results  Bufalin inhibited hepatoma cell proliferation, migration, invasion and adhesion. In addition, treatment with bufalin significantly decreased the levels of pAKT, pGSK3β, MMP-9, and MMP-2, while increasing the levels of GSK3β and E-cadherin and suppressing the nuclear translocation of β-catenin.    Conclusions  Bufalin is a potential anti-HCC therapeutic candidate through its inhibition of the AKT/GSK3β/β-catenin/E-cadherin signaling pathway. Further studies with bufalin are warranted in patients with HCC, especially those with the disease at advanced stages.

Bufalin, a component in Chansu, inhibits proliferation and invasion of hepatocellular carcinoma cells