目的:研究前列腺跨膜上皮抗原1(six-transmembrane epithelial antigen of prostate protein 1,STEAP1)在乳腺癌中的表达及临床意义。方法:收集2007年1月至2016年12月山东省千佛山医院40例女性乳腺正常组织及52例乳腺纤维腺瘤、211例乳...目的:研究前列腺跨膜上皮抗原1(six-transmembrane epithelial antigen of prostate protein 1,STEAP1)在乳腺癌中的表达及临床意义。方法:收集2007年1月至2016年12月山东省千佛山医院40例女性乳腺正常组织及52例乳腺纤维腺瘤、211例乳腺癌患者的组织标本,应用免疫组织化学法检测STEAP1的表达情况。根据STEAP1表达的高低将乳腺癌患者分为高表达组和低表达组,对两组行临床病理特征和Kaplan-Meier生存分析。运用RT-PCR及Western blot法检测STEAP1在人正常乳腺上皮细胞HBL-100及乳腺癌细胞MDA-MB-468、BT549和MCF-7中的表达情况,使用Oncomine和Kaplan-Meier Plotter数据库分析STEAP1的表达及预后。结果:免疫组织化学法检测显示乳腺癌组织中的STEAP1高表达者占11.8%(25/211),低于乳腺正常组织的85.0%(34/40)和乳腺纤维腺瘤的84.6%(44/52),3者之间具有显著性差异(P<0.001),与Oncomine数据库分析获得的乳腺癌组织中表达低于乳腺正常组织的结果一致。RT-PCR和Western blot法检测显示乳腺上皮细胞中的STEAP1 m RNA和蛋白质表达明显高于乳腺癌细胞MDA-MB-468、BT549和MCF-7,4种细胞之间具有显著性差异(均P<0.001)。Kaplan-Meier生存分析与Kaplan-Meier Plotter数据库分析均表明STEAP1高表达者预后更佳(均P<0.05)。结论:正常乳腺中的STEAP1表达水平高于乳腺癌,STEAP1高表达与良好的预后相关。展开更多
Prostate cancer is the most commonly diagnosed cancer and the second leading cause of cancer mortality in men in the Western World. In the initial stages, prostate cancer is dependent on androgens for growth which is ...Prostate cancer is the most commonly diagnosed cancer and the second leading cause of cancer mortality in men in the Western World. In the initial stages, prostate cancer is dependent on androgens for growth which is the basis for androgen ablation therapy. The effects of androgens are mediated by the Androgen Receptor (AR). Therefore, studies focus on the identification of AR-regulated genes that are also highly expressed in the prostate. STAMP family genes STAMP1/STEAP2 and STAMP2/STEAP4 have only expressed in androgen receptor-positive cells, the role of AR in STAMP family gene expression is an important question. STEAP (Six Transmembrane Epithelial Antigen of Prostate) is the first characterized prostate of enriched six transmembrane gene, expressed in metastatic prostate cancer samples, it is tempting to speculate that STAMP/STEAP family genes may be involved in similar functions with a role for both the normal biology and pathophysiology of the prostate. Using siRNA technology in LNCaP cells expressing STAMP genes per se, an apoptosis panel including pro-apoptotic and/or apoptotic molecules was assayed by RT-PCR, By this research project, prostate-specific STAMP gene family and its regulatory effects on the p53- and caspase-related pathways were characterized.展开更多
文摘目的:研究前列腺跨膜上皮抗原1(six-transmembrane epithelial antigen of prostate protein 1,STEAP1)在乳腺癌中的表达及临床意义。方法:收集2007年1月至2016年12月山东省千佛山医院40例女性乳腺正常组织及52例乳腺纤维腺瘤、211例乳腺癌患者的组织标本,应用免疫组织化学法检测STEAP1的表达情况。根据STEAP1表达的高低将乳腺癌患者分为高表达组和低表达组,对两组行临床病理特征和Kaplan-Meier生存分析。运用RT-PCR及Western blot法检测STEAP1在人正常乳腺上皮细胞HBL-100及乳腺癌细胞MDA-MB-468、BT549和MCF-7中的表达情况,使用Oncomine和Kaplan-Meier Plotter数据库分析STEAP1的表达及预后。结果:免疫组织化学法检测显示乳腺癌组织中的STEAP1高表达者占11.8%(25/211),低于乳腺正常组织的85.0%(34/40)和乳腺纤维腺瘤的84.6%(44/52),3者之间具有显著性差异(P<0.001),与Oncomine数据库分析获得的乳腺癌组织中表达低于乳腺正常组织的结果一致。RT-PCR和Western blot法检测显示乳腺上皮细胞中的STEAP1 m RNA和蛋白质表达明显高于乳腺癌细胞MDA-MB-468、BT549和MCF-7,4种细胞之间具有显著性差异(均P<0.001)。Kaplan-Meier生存分析与Kaplan-Meier Plotter数据库分析均表明STEAP1高表达者预后更佳(均P<0.05)。结论:正常乳腺中的STEAP1表达水平高于乳腺癌,STEAP1高表达与良好的预后相关。
文摘Prostate cancer is the most commonly diagnosed cancer and the second leading cause of cancer mortality in men in the Western World. In the initial stages, prostate cancer is dependent on androgens for growth which is the basis for androgen ablation therapy. The effects of androgens are mediated by the Androgen Receptor (AR). Therefore, studies focus on the identification of AR-regulated genes that are also highly expressed in the prostate. STAMP family genes STAMP1/STEAP2 and STAMP2/STEAP4 have only expressed in androgen receptor-positive cells, the role of AR in STAMP family gene expression is an important question. STEAP (Six Transmembrane Epithelial Antigen of Prostate) is the first characterized prostate of enriched six transmembrane gene, expressed in metastatic prostate cancer samples, it is tempting to speculate that STAMP/STEAP family genes may be involved in similar functions with a role for both the normal biology and pathophysiology of the prostate. Using siRNA technology in LNCaP cells expressing STAMP genes per se, an apoptosis panel including pro-apoptotic and/or apoptotic molecules was assayed by RT-PCR, By this research project, prostate-specific STAMP gene family and its regulatory effects on the p53- and caspase-related pathways were characterized.
