CD147、MMP-2在人脑胶质瘤中的表达及其与预后的关系

Expression of CD147 and MMP-2 in Human Gliomas and Its Correlations with Prognosis

目的探讨CD147和基质金属蛋白酶2(matrix metalloproteinases-2,MMP-2)在胶质瘤中的表达,及其与胶质瘤预后的关系。方法采用免疫组化SP法检测50例胶质瘤标本中CD147和MMP-2蛋白的表达,采用RT-PCR对各级别胶质瘤中CD147的mRNA进行半定量分析,并结合随访资料进行分析。结果胶质瘤标本中CD147蛋白阳性表达率为72.0%,MMP-2蛋白阳性表达率为78.0%,二者联合表达率70.0%,CD147蛋白的表达与MMP-2蛋白的表达之间存在正相关(r=0.737,P<0.01),RT-PCR检测到各级别胶质瘤标本中均有CD147 mRNA的表达;且随着胶质瘤级别增高,CD147和MMP-2蛋白的表达强度增高,CD147 mRNA表达水平也增高。预后分析证实CD147的表达越高,患者生存期越短。结论CD147和MMP-2的表达与胶质瘤的恶性程度及预后关系密切,二者可作为胶质瘤患者判断临床预后和制定诊疗计划有意义的参考指标。

Objective To investigate the expressions of CD147 and MMP-2 in human gliomas and to study the relationship between their expression and prognosis. Methods Immunohistochemistry SP methods were applied to detect the expression of CD147 and MMP-2 in 50 cases of gliomas and RT-PCR also applied to analyze the expression level of CD147 mRNA. The relationship between the expression level and the glioma prognosis were analyzed statistically depends on the follow-up investigation of the disease development. Results The positive rates of CD147 and MMP-2 in human gliomas were 72. 0% and 78.0%, and coexpression of CD147 and MMP-2 in gliomas was 70.0%. CD147 protein was positively correlated with the expression of MMP-2 protein （r=0. 737, P〈0. 01）. CD147 mRNA expression was also detected in low and high grade gliomas by RT-PCR, but their expression levels were obviously enhanced in high grade gliomas. There was a significant difference in each grade gliomas. The higher expression of CD147, the shorter survival time of the patients. The variations were significant statistically. Conclusion There was positive correlation between the expressions of CD147, MMP-2 in human gliomas and the degree of malignancy and prognosis. CD147 and MMP-2 may be a prognostic factor of human gliomas and targets for chemotherapeutical strategies.