Abstract
Objective To investigate the enhancing effect of Celecoxib on the anti-proliferative effect of cisplatin (DDP) against human cervical carcinoma HeLa cells and to explore the possible mechanism. Methods After treatment of HeLa cells with Celecoxib or/and DDP, the growth suppression of HeLa cells was measured by MTT assay. Cell cycle and apoptosis were examined by flow cylometry. Results The inhibition of Celecoxib on HeLa cells was dose -dependent and time -dependent.The inhibitory effect was remarkable enhanced in asynergistic or additive pattern after treatment with the combination of Celecoxib and DDP (P =0.000) . Celecoxib (50 μmol/L) and DDP (16 μmol/L) could respectively induce the apoptosis of HeLa cells and this effect of apoptosis induction was increased when combinated Celecoxib with DDP. They could change cell cycle of HeLa cells lines with G_0/G_1 phase cells increasing and S phase cells decreasing. Conclusion Celecoxib combined with DDP shows synergistic anti-tumor effects. Key words: Uterine cervical neoplasms; Drug therapy; combination; HeLa cells; Celecoxib; Cisplatin
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