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钙结合蛋白在前列腺癌中的下调表达及其临床意义 被引量:3

The clinical significance of decreased expression of calcium binding protein 39 in prostate cancer
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摘要 目的探讨钙结合蛋白(CAB39)在前列腺癌中的作用及其临床意义。方法应用蛋白组学二维荧光差异凝胶电泳(2D—DIGE)技术筛选出在局限性前列腺癌与癌旁组织差异性表达的CAB39蛋白,质谱分析(MS)鉴定、免疫组织化学技术检测CAB39蛋白在24例前列腺癌与癌旁组织中的表达,结合CAB39免疫组织化学评分和前列腺癌患者的临床病理参数进行分析。结果CAB39蛋白在癌旁组织中的免疫组织化学染色阳性率高于前列腺癌组织(70.8%比33.3%,P〈0.01),CAB39蛋白表达在前列腺癌患者年龄、血清前列腺特异抗原(PSA)水平、Gleason评分和肿瘤TNM分期各不同分组中的差异均无统计学意义(P〉0.05)。结论CAB39蛋白在前列腺癌患者中下调表达,它可能是前列腺癌抑制因子。 Objective To explore the role and clinical significance of calcium binding protein 39 (CAB39) protein in prostate cancer (PCa). Methods Using the two-dimensional fluorescence difference gel electrophoresis (2D-DIGE) to screen CAB39 protein in PCa and adjacent tissues, and mass spectrome- try analysis verification, to analyze the differentially expressed degree of CAB39 protein in 24 cases of PCa and adjacent tissues by immunohistochemical (IHC) technology, the combination of CAB39 IHC score and clinicopathological parameters of PCa patients were analyzed. Results Using the method of IHC, we fimnd that the expression of CAB39 protein in adjacent tissues was significantly higher than that in PCa tis- sues (70. 8% vs 33.3%, P 〈0. 01). The expression of CAB39 protein in different age stages of PCa pa- tients, serum PSA levels, G|eason score and TNM stage in tumor group had no significant difference( P 〉 0. 05). Conclusion CAB39 protein is down-regulated expression in PCa, it may be prostate tumor suppressor.
出处 《中华实验外科杂志》 CAS CSCD 北大核心 2013年第6期1164-1166,共3页 Chinese Journal of Experimental Surgery
基金 国家自然科学基金资助项目(30872960、81170699) 贵州省科技厅联合基金资助项目(2010-3116) 贵州省国际科技合作项目(2011-7037)
关键词 钙结合蛋白 前列腺癌 二维荧光差异凝胶电泳 Calcium binding protein 39 Prostate cancer Two-dimensional fluorescence difference gel electrophoresis
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