CXCR1、CXCR2 及CXCL8 在乙肝相关肝癌中的表达及临床意义

目的:探讨乙肝相关肝癌患者外周血单个核细胞及肝活检组织CXCR1、CXCR2 及CXCL8 表达及其临床意义。方法:用实时荧光定量PCR 法检测36 例乙肝相关肝癌患者外周血PBMCs 中CXCR1、CXCR2 及CXCL8 mRNA 水平;SP 法检测肝活检组织CXCR1、CXCR2 及CXCL8 蛋白表达水平;化学发光免疫分析法检测血清CRP 水平,并对各指标进行相关性分析。结果:乙肝相关肝癌患者PBMCs 中CXCR1、CXCR2 及CXCL8 mRNA 水平分别为(0.952 7±0.197 2)、(0.896 9±0.173 0)、(1.771 9±0.248 9),较正常对照组明显升高,差异有统计学意义(P<0.01)。SP 结果提示,CXCR1、CXCR2 及CXCL8 的蛋白水平较对照组明显升高(P<0.05)。乙肝相关肝癌患者血清CRP 水平与PBMC 内CXCR1(r =0.54,P<0.01)、CXCR2(r =0.49,P<0.01)及CXCL8(r = 0.63,P<0.01)呈正相关。结论:乙肝相关肝癌患者外周血PBMCs 及肝活检组织CXCR1、CXCR2 及CXCL8 表达明显升高,且与血清CRP 呈正相关,推测CXCR1、CXCR2 及CXCL8 介导的信号转导过程可能在乙肝相关肝癌发病过程中发挥重要作用,为肝癌免疫干扰治疗提供新的靶点。

Expressions and clinical significance of CXC chemokine receptor 1 and 2 and CXCL8 in hepatitis B related hepatocellular carcinoma

Objective:To investigate the expression levels of CXCR1,CXCR2 and their common ligand CXCL8 in peripheral blood mononuclear cells (PBMCs) and liver biopsy from the patients with hepatitis B related hepatocellular carcinoma and their clinical significances.Methods:Quantitative real time polymerase chain reaction (qRT-PCR) was used to detect the mRNA levels of CXCR1,CXCR2,CXCL8 in the peripheral blood mononuclear cells of thirty-six hepatitis B related hepatocellular carcinoma and the protein levels of CXCR1 and CXCR2 and CXCL8 in liver biopsy were detected by SP immunohistochemical method.The level of C-reactive protein in serum was determined by chemiluminescence immunoassay respectively.Then,the correlations between CRP and the mRNA of CXCR1,CXCR2 and CXCL8 were analyzed.Results:The mRNA levels of CXCR1 (0.952 7±0.197 2),CXCR2 (0.896 9±0.173 0),CXCL8 (1.771 9±0.248 9) in the PBMCs of hepatitis B related hepatocellular carcinoma were significantly higher than those in controls (P<0.01).And the protein levels of CXCR1,CXCR2 and CXCL8 were also obviously increased in liver biopsy of hepatitis B related hepatocellular carcinoma (P<0.05).In addition,there was positive correlations between the level of serum C-reactive protein and the mRNA expression of CXCR1(r =0.54,P<0.01),CXCR2(r =0.49,P<0.01),CXCL8(r =0.63,P<0.01).Conclusion:The levels of CXCR1,CXCR2 and CXCL8 significantly increased in hepatitis B related hepatocellular carcinoma patients and positively correlated with serum CRP,suggesting that CXCR1,CXCR2 and their common ligand CXCL8 signal transduction process may play a key role in the pathological process of hepatitis B related hepatocellular carcinoma,which may provide a new direction for the immune inter-vention therapy of hepatocellular carcinoma.