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alpha-Fetoprotein shields hepatocellular carcinoma cells from apoptosis induced by tumor necrosis factor-related
Mengsen Li1, Sheng Zhou, Xinhua Liu
1Department of Biochemistry and Molecular Biology, Peking University Health Science Center, Beijing 100083, China.
Abstract:
The interference of alpha-fetoprotein (AFP) with the apoptosis induced by tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) in Bel 7402 cells was investigated in the current study. The results showed a moderate degree of drug-resistance of Bel 7402 cells to TRAIL. The caspase-3 cascade was the main pathway involved in TRAIL-induced apoptosis, which was virtually abolished in the presence of AFP. TRAIL together with antibody against AFP was able to accelerate the death of tumor cells. This study suggests the possibility a therapeutic strategy for improving clinical treatment of liver tumor with TRAIL could be effected through antagonizing the shelter effect of AFP.
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