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Celecoxib enhances the inhibitory effect of cisplatin on Tca8113 cells in human tongue squamous cell carcinoma in vivo and in vitro
Author(s) -
Li Wei Zhong,
Wang Xiao Yan,
Li Zu Guo,
Zhang Jin Hua,
Ding Yan Qing
Publication year - 2010
Publication title -
journal of oral pathology and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 83
eISSN - 1600-0714
pISSN - 0904-2512
DOI - 10.1111/j.1600-0714.2009.00885.x
Subject(s) - celecoxib , in vivo , cisplatin , cancer research , in vitro , cell culture , cyclooxygenase , cell growth , medicine , pathology , pharmacology , chemistry , chemotherapy , biology , enzyme , biochemistry , genetics , microbiology and biotechnology
J Oral Pathol Med (2010) 39 : 579–584 Background: Overexpression of cyclooxygenase‐2 (COX‐2) is associated with carcinogenesis, invasiveness, and metastasis of malignant tumors. Inhibition of COX‐2 is one hot topic of research in prevention and treatment of malignant tumors. Because of the selective and specific inhibition on the activity of COX‐2, the roles of celecoxib in prevention and treatment of tumors have attracted broad attention in recent years. In this study, we investigated the inhibitory effect of celecoxib combined with cisplatin on the proliferation of human tongue squamous cell carcinoma cell line Tca8113 in vivo and in vitro . Methods: Human tongue squamous cell carcinoma tumor cells Tca8113 and a mouse model with Tca8113 cells were used to study the growth inhibition of cisplatin enhanced by celecoxib. Drug treatment of Tca8113 in vitro and mice bearing xenografts in vivo were used. The level of COX‐2 expression was detected by Western blotting. Sensitivity of cells to drug treatment was analyzed by MTT assay. Results: Treatment of Tca8113 cells with cisplatin (CDDP) had less effect on the expression of COX‐2, whereas the COX‐2 expression was significantly down‐regulated after treatment with celecoxib alone or in combination with CDDP for 24 h. In addition, the combination of celecoxib with CDDP was also able to inhibit the Tca8113 line heterotransplanted in Balb/c nude mice. Conclusions: Those findings indicate that a low dose of celecoxib could augment CDDP‐induced growth inhibition of Tca8113 cells and its xenograft in Balb/c nude mice.