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Effects of harmaline on cell growth of human liver cancer through the p53/p21 and Fas/FasL signaling pathways

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Abstract

The effects of harmaline on the viability and apoptosis of human liver carcinoma were investigated in vitro. HepG2 cells were treated with harmaline (0‑10 µM), and the proliferation and apoptosis of HepG2 cells were investigated using an MTT assay and flow cytometry, respectively. The protein expression of cellular tumor antigen p53 (p53), cyclin‑dependent kinase inhibitor 1 (p21), tumor necrosis factor receptor superfamily member 6 (Fas), Fas ligand (FasL) and caspase‑8 was subsequently measured using western blotting. In addition, an ELISA was used to analyze caspase‑8/3 activity. Harmaline significantly increased p53, p21, Fas and FasL protein expression in HepG2 cells. Additionally, treatment with harmaline significantly increased the expression of caspase‑8 and caspase‑8/3 activity. The results from the present study suggest that harmaline suppresses the viability, but induces the apoptosis, of human liver carcinoma cells through upregulation of the p53/p21 and Fas/FasL signaling pathways.
Xu, B., Li, M., Yu, Y., He, J., Hu, S., Pan, M., … & Zhu, J. (2018). Effects of harmaline on cell growth of human liver cancer through the p53/p21 and Fas/FasL signaling pathways. Oncology Letters15(2), 1931-1936. 10.3892/ol.2017.7495
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