磷酸甘油酸激酶1和前列腺癌临床特征的相关性及在预后预测中的作用

目的:探讨磷酸甘油酸激酶1在前列腺癌中的表达水平,并分析其与前列腺癌临床特征的相关性以及在预后预测中的作用。方法:收集2013年1月~2014年12月于南方医科大学中西医结合医院住院部行手术治疗的30例良性前列腺增生患者和132例前列腺癌患者标本,用Western blot和免疫组化法分析磷酸甘油酸激酶1在前列腺细胞以及标本中的蛋白表达,并分析磷酸甘油酸激酶1的表达水平与前列腺癌临床特征的相关性以及对前列腺癌预后预测的作用。结果:磷酸甘油酸激酶1在前列腺癌组织和细胞中的表达明显上升,且其表达水平与前列腺癌的Gleason评分、TNM分期、局部浸润、骨转移和血清前列腺特异性抗原(PSA)水平具有显著相关性;Cox分析表明骨转移、血清PSA和PGK1表达是影响前列腺癌患者生存的独立危险因素。生存曲线分析表明高表达的PGK1与前列腺癌的预后不良明显相关。结论:磷酸甘油酸激酶1是影响前列腺癌患者生存的独立危险因素,并能够作为前列腺癌的预后预测标志物。

Relationship between phosphoglycerate kinase 1 and clinical features of prostate cancer and its role in prognosis

AIM: To study the expression and prognostic functions of phosphoglycerate kinase 1 (PGK1) in prostate cancer. METHODS: The prostatic samples were collected from the patients with prostate cancer and benign prostatic hyperplasia (BPH) in TCM-Integrated Hospital of Southern Medical University from Jan 2013 to Dec 2013. The protein expression of PGK1 in the prostate specimens was detected by immunohistochemical analysis and Western blot. Furthermore, the correlations of PGK1 expression with the clinicopathological features and prognosis of prostate cancer were also evaluate. RESULTS: The expression of PGK1 in the prostate specimens was significantly up-regulated compared with the BPH individuals. In addition, the expression of PGK1 was significantly correlated with the local infiltration, Gleason score, TNM grade, bone metastasis, and serum prostate-specific antigen (PSA) concentration. Finally, bone metastasis, serum PSA level and PGK1 expression were independent risk factors for prostate cancer illustrated by Cox analysis, and high expression of PGK1 was correlated with poor prognosis. CONCLUSION: PGK1 expression is an independent risk factor for prostate cancer, and it might act as a prognostic biomarker for prostate cancer.