期刊
DNA AND CELL BIOLOGY
卷 26, 期 10, 页码 713-U1出版社
MARY ANN LIEBERT INC
DOI: 10.1089/dna.2007.0577
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We studied the in vitro mechanism of etoposide- induced cell death in cervical cancer cells. Etoposide is cytotoxic to these cells, causing cell death by both apoptosis and autophagy, which has recently been described as a possible mechanism for nonapoptotic cell death. Electron microscopy revealed that autophagosomes/autolysosomes exhibited an autophagic appearance in the presence of etoposide. When autophagy was blocked by inhibitors of autophagy, including 3-methyladenine, both the expression of beclin 1 protein and the antitumor effect of etoposide were suppressed. Benzyloxycarbonyl-Val-Ala-Asp-fluoromethyl ketone, a pan-caspase inhibitor, reduced etoposide-induced cytotoxicity in CaSki cells. Hence, autophagy and apoptosis likely occur concurrently in etoposide-treated cervical cancer cells.
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