Experimental study on mitotic catastrophe induced by pcDNA_3-survivin-mutant in gastric cancer cell lines / 中华消化杂志

ABSTRACT

Objective Through gene reconstruction we generated pcDNA 3-survivin-mutant(Cys84Ala)plasmid, then the plasmid DNA was further transfected into gastric carcinoma cells by liposomal delivery. The effects of mutant survivin on cytokinetics of the gastric carcinoma cells were obversed. Methods By using immunohistochemical staining, the expression of survivin was detected in the gastric cancer tissues, and apoptosis was detected by flow cytometry. The PARP and cytochrome C expressions were determined by Western blot, the mitotic catastrophe was determined by immunofluorescence. Results Inhibition of survivin by mutant survivin cDNA could induce apoptosis, increase caspase-3 activity, cleave PARP and promote cytochrome C release in gastric cancer cells. Inhibition of survivin also caused mitotic catastrophe in gastric cancer cells. Conclusion Inhibition of survivin may induce apoptosis and mitotic catastrophe in gastric cancer. Survivin targeting gastric cancer therapy might be of potential benefit in the future.