柯萨奇腺病毒受体在人PCa细胞Du145和LNCaP中的差异表达及意义

目的:探讨柯萨奇腺病毒受体(CAR)在PCa转移潜能获得机制中的可能作用。方法:用TransweⅡ技术鉴定两种PCa细胞株(Du145和LNCaP)的不同转移潜能,进而应用Western印迹法鉴定这两种细胞株中的CAR表达差异情况,并初步分析其在PCa转移过程中所发挥的作用。结果:Du145的体外侵袭潜能显著高于LNCaP细胞(P<0.05);同时,CAR在低转移细胞株LNCaP中高表达,而在高转移细胞株Du145中表达缺失(P<0.01)。结论:CAR在转移潜能不同的PCa细胞株之间确实存在着有意义的差异表达,而这种表达差异可能在影响PCa转移过程中发挥重要作用。

Expression of Coxsackie B Virus-Adenovirus Receptor in Prostate Cancer Du145 and LNCaP Cell Lines and Its Significance

OBJECTIVE: To observe the expression of Coxsackie B virus-adenovirus receptor (CAR) in two prostate cancer cell lines with different metastatic potentials. METHODS: The expressions of CAR in two prostate cancer cell lines (Du145 and LNCaP) with different metastatic potentials were detected by Western blotting. The Transwell polycarbonate filter was used to analyze the invasive potency. RESULTS: As one of the adhesion associated proteins, CAR highly expressed in the LNCaP cell line, which is well known with a low metastatic potential, and lowly expressed in Du145 with a high metastatic potential (P < 0.01). The invasive potency of Du145 was significantly higher than that of LNCaP (P < 0.05). CONCLUSION: There was a difference in the metastatic phenotypes of CAR among cell lines with different metastatic potentials. The expressions of CAR proteins may play an important role in repressing the metastasis of prostate cancer.