Abstract:
OBJECTIVES:To investigate the effects of the selective cyclooxygenase-2 (COX-2) inhibitor etodolac on prostate cancer cell lines in vitro and in vivo and on E-cadherin expression in prostate cancer cells. METHODS:We evaluated the cytotoxicity of etodolac on the three prostate cancer cell lines LNCaP, C4-2, and PC-3. We also performed quantitative real-time polymerase chain reaction to measure the mRNA expression of COX-2, Bcl-2, and E-cadherin in these cell lines after etodolac treatment. In addition, we investigated the in vivo antitumor effects of etodolac on a human prostate cancer xenograft model. RESULTS:Etodolac exhibited significant antitumor effect in vivo and in vitro. The cytotoxicity of etodolac in LNCaP and C4-2 was markedly increased at a dose of 1000 nM in a time-dependent and dose-dependent manner. In the in vivo tumor growth study, the etodolac-treated mice exhibited more significant cytotoxicity than the phosphate-buffered saline-treated mice. Expression of E-cadherin after etodolac treatment tended to increase and that of Bcl-2 to decrease, but the expression of COX-2 had no definite tendency. CONCLUSIONS:The COX-2 inhibitor etodolac exhibited an antitumor effect on prostate cancer cell lines in vitro and in vivo, and it might be useful for the treatment of hormone-resistant prostate cancer.
journal_name
Urologyjournal_title
Urologyauthors
Shigemura K,Shirakawa T,Wada Y,Kamidono S,Fujisawa M,Gotoh Adoi
10.1016/j.urology.2005.06.076subject
Has Abstractpub_date
2005-12-01 00:00:00pages
1239-44issue
6eissn
0090-4295issn
1527-9995pii
S0090-4295(05)00894-0journal_volume
66pub_type
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