Dual targeting of survivin and X‑linked inhibitor of apoptosis protein suppresses the growth and promotes the apoptosis of gastric cancer HGC‑27 cells

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Abstract

Gastric cancer can be a fatal tumor and therefore represents one of the primary challenges in modern oncology. Survivin and X-linked inhibitor of apoptosis protein (XIAP) are members of the IAP family, which exerts a strong inhibitory effect on cellular apoptosis. In previous studies, the expression levels of survivin and XIAP have been demonstrated to influence the prognosis of patients with gastric cancer; therefore, the present study investigated the effect of silencing survivin and XIAP on the biological activity of the gastric cancer HGC-27 cell line. It was demonstrated that the expression levels of survivin and XIAP were significantly increased in gastric cancer tissues, compared with the adjacent non-tumor tissues. Furthermore, it was observed that the expression levels of survivin and XIAP were similarly elevated in gastric cancer HGC-27 cells, compared with normal gastric epithelial GES-1cells. Furthermore, small interfering RNA-mediated surviving- or XIAP-knockdown, in addition to the dual knockdown of survivin and XIAP, inhibited the proliferation and promoted the apoptosis of HGC-27 cells. Simultaneous inhibition of XIAP and survivin expression was more effective, compared with inhibition of XIAP or survivin alone. These results indicated that the dual knockdown of survivin and XIAP may be an effective strategy for treating gastric cancer in the future.

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