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Int. J. Mol. Sci. 2010, 11(10), 3999-4013; doi:10.3390/ijms11103999

Cyclin D1 Expression and the Inhibitory Effect of Celecoxib on Ovarian Tumor Growth in Vivo

Department of Gynecology, Nanjing Medical University of Hangzhou Hospital, 261 Huansha Road, Hangzhou, Zhejiang, 310006, China
Author to whom correspondence should be addressed.
Received: 7 September 2010 / Revised: 28 September 2010 / Accepted: 8 October 2010 / Published: 19 October 2010
(This article belongs to the Section Biochemistry, Molecular and Cellular Biology)
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The report aims to investigate the relationship between the expression of cyclin D1 and Cyclooxgenase-2 (COX-2), thus to explore the molecular mechanisms of the antitumor efficacy of Celecoxib, a COX-2 inhibitor. Human ovarian SKOV-3 carcinoma cell xenograft-bearing mice were treated with Celecoxib by infusing gaster (i.g.) twice/day for 21 days. The mRNA levels of COX-2 and cyclin D1 were determined by RT-PCR. The expression of cyclin D1 at the protein level was detected by immunohistochemistry, while COX-2 protein expression was determined by Western blot. A high-dose of Celecoxib (100 mg/kg) significantly inhibited tumor growth (P < 0.05), and the expression of cyclin D1 was reduced by 61%. Celecoxib decreased the proliferation cell index by 40% (P < 0.001) and increased apoptotic index by 52% (P < 0.05) in high-dose Celecoxib treated group. Our results suggest that the antitumor efficacy of Celecoxib against ovarian cancer in mice may in part be mediated through suppression of cyclin D1, which may contribute to its ability to suppress proliferation. View Full-Text
Keywords: Celecoxib; cyclin D1; ovarian cancer; proliferation; apoptosis Celecoxib; cyclin D1; ovarian cancer; proliferation; apoptosis

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Li, W.; Jiang, H.-R.; Xu, X.-L.; Wang, J.; Zhang, J.; Liu, M.-L.; Zhai, L.-Y. Cyclin D1 Expression and the Inhibitory Effect of Celecoxib on Ovarian Tumor Growth in Vivo. Int. J. Mol. Sci. 2010, 11, 3999-4013.

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