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Knockdown of Bmi-1 Impairs Growth and Invasiveness of Human Gastric Carcinoma Cells

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The effect of B cell-specific MLV integration site-1 (Bmi-1) RNA interference (RNAi)-mediated inhibition of Bmi-1 expression on the proliferation, apoptosis, and invasiveness of human gastric carcinoma AGS cells was investigated. RT-PCR and Western blot analyses demonstrated that Bmi-1 expression and the Bmi-1 protein level were significantly decreased in Bmi-1 shRNA transfected AGS cells compared to untransfected and nonspecific shRNA transfected AGS cells. Bmi-1 RNAi-mediated inhibition of Bmi-1 expression significantly affected cell growth and invasiveness, and resulted in increased AGS cell apoptosis. This was not observed in untransfected and nonspecific shRNA transfected AGS cells. Inhibition of Bmi-1 expression in human gastric carcinoma cells affects cell proliferation and invasiveness.
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Keywords: Apoptosis; Bmi-1; Gastric carcinoma; Proliferation; RNA interference (RNAi)

Document Type: Research Article

Publication date: 2009-11-01

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