BACKGROUND: Zoledronic acid (Zol) is used successfully to inhibit bone resorption in tumor bone disease of various human cancer. Zol inhibits the mevalonate pathway and other potential targets include the inhibition of tyrosine phosphatase activity, disruption of metalloproteinase, secretion and down-regulation of the catalytic subunit of telomerase (hTERT). The six-transmembrane epithelial antigen of prostate protein (STEAP) is a new marker highly expressed at all phases of prostate cancer. AIM: Here, we analyzed for the first time the effect of Zol on STEAP gene expression in prostate cancer cells. MATERIAL AND METHODS: We evaluated the effects of Zol in STEAP gene expression by RT real time PCR in androgen-sensitive (LNCaP) and androgen-non-sensitive (PC3 and DU145) cell lines. To confirm the pro-apoptotic effect of Zol, we also analyzed the caspase-3 gene expression, that resulted up-regulated in cancer cell apoptosis. RESULTS: Zol strongly decreased cell viability and lowered STEAP gene expression in a dose-dependent manner. In addition, this effect was accompanied by an increase of apoptotic index and an up-regulation of caspase-3 gene expression. CONCLUSION: Zol may affect cancer cells also by targeting the gene expression of STEAP.
BACKGROUND:Zoledronic acid (Zol) is used successfully to inhibit bone resorption in tumor bone disease of various humancancer. Zol inhibits the mevalonate pathway and other potential targets include the inhibition of tyrosine phosphatase activity, disruption of metalloproteinase, secretion and down-regulation of the catalytic subunit of telomerase (hTERT). The six-transmembrane epithelial antigen of prostate protein (STEAP) is a new marker highly expressed at all phases of prostate cancer. AIM: Here, we analyzed for the first time the effect of Zol on STEAP gene expression in prostate cancer cells. MATERIAL AND METHODS: We evaluated the effects of Zol in STEAP gene expression by RT real time PCR in androgen-sensitive (LNCaP) and androgen-non-sensitive (PC3 and DU145) cell lines. To confirm the pro-apoptotic effect of Zol, we also analyzed the caspase-3 gene expression, that resulted up-regulated in cancer cell apoptosis. RESULTS:Zol strongly decreased cell viability and lowered STEAP gene expression in a dose-dependent manner. In addition, this effect was accompanied by an increase of apoptotic index and an up-regulation of caspase-3 gene expression. CONCLUSION:Zol may affect cancer cells also by targeting the gene expression of STEAP.
Authors: Kostas V Floros; Hellinida Thomadaki; Dimitra Florou; Maroulio Talieri; Andreas Scorilas Journal: Ann N Y Acad Sci Date: 2006-12 Impact factor: 5.691
Authors: Andreas Guenther; Sharon Gordon; Markus Tiemann; Renate Burger; Frank Bakker; Jonathan R Green; Wolfgang Baum; Anke J Roelofs; Michael J Rogers; Martin Gramatzki Journal: Int J Cancer Date: 2010-01-01 Impact factor: 7.396
Authors: M T Valenti; L Dalle Carbonare; L Donatelli; F Bertoldo; B Giovanazzi; F Caliari; V Lo Cascio Journal: Cancer Lett Date: 2008-09-14 Impact factor: 8.679
Authors: Luis Sanchez-Pulido; Ana M Rojas; Alfonso Valencia; Carlos Martinez-A; Miguel A Andrade Journal: BMC Cancer Date: 2004-12-29 Impact factor: 4.430
Authors: M Goffinet; M Thoulouzan; A Pradines; I Lajoie-Mazenc; Carolyn Weinbaum; J C Faye; S Séronie-Vivien Journal: BMC Cancer Date: 2006-03-15 Impact factor: 4.430