黏着斑激酶、磷酸酶和张力蛋白同源缺失基因在脑胶质瘤中的表达及相关性研究

    The expressions of focal adhension kinase and phosphatase and tensin homology deleted on chromosome ten in human glioma and their correlations

    • 摘要: 目的:明确黏着斑激酶(FAK)和第十号染色体上磷酸酶和张力蛋白同源缺失基因(PTEN)在脑胶质瘤组织中的表达变化,以及与肿瘤的发生、侵袭性生长和临床病理学特征的关系。方法:应用EliVision免疫组织化学方法检测FAK、PTEN在6例正常脑组织及54例各级脑胶质瘤中的表达情况。结果:FAK在脑胶质瘤中的表达总阳性率为66.67%,其中Ⅰ~Ⅱ级为35.00%,Ⅲ级为81.25%,Ⅳ级为88.89%,Ⅰ~Ⅱ级阳性率均低于Ⅲ级和Ⅳ级(P0.01),而Ⅲ级和Ⅳ级差异无统计学意义(P0.05)。PTEN在脑胶质瘤中总阳性率46.30%,其中Ⅰ~Ⅱ级为75.00%,Ⅲ级为31.25%,Ⅳ级为27.78%。Ⅰ~Ⅱ级阳性率均高于Ⅲ级和Ⅳ级(P0.01),而Ⅲ级和Ⅳ级差异无统计学意义(P0.05)。PTEN与FAK在脑胶质瘤中的表达呈负相关关系(P0.01)。结论:FAK的阳性率随着脑胶质瘤病理级别的增加而增加,而PTEN的阳性率随着脑胶质瘤病理级别的增加而降低。同时分析二者在肿瘤细胞中的表达,有助于判断脑胶质瘤的病理学分级、预后,以及进一步指导临床治疗。

       

      Abstract: Objective: To investigate the expressions of focal adhension kinase( FAK) and phosphatase and tensin homology deleted on chromosome ten( PTEN) in human glioma and their relationships with the occurance,invasive growth and clinical pathological features of tumor. Methods: The expression levels of FAK and PTEN in 6 cases of normal brain tissue and 54 cases of human glioma samples were detected by EliVision immunohistochemical method. Results: The total positive rate of FAK expression in glioma was 66. 67% including stageⅠto Ⅱ( 35. 00%),stage Ⅲ( 81. 25%) and stage Ⅳ( 88. 89%),the positive rates of FAK expression in stage Ⅰto Ⅱwere lower than that in stage Ⅲ and Ⅳ( P 0. 01) and its expressions in grade Ⅲ and Ⅳ were not statistical significance( P 0. 05). The total positive rate of PTEN expression in glioma was 46. 30% including stageⅠto Ⅱ( 75. 00%),stage Ⅲ( 31. 25%) and stage Ⅳ( 27. 78%),the positive rates of FAK expression in stageⅠto Ⅱwere higher than that in stage Ⅲ and Ⅳ( P 0. 01) and its expressions in stage Ⅲ and Ⅳ were not statistical significance( P 0. 05). The FAK and PTEN expression in glioma was negative correlation( P 0. 01). Conclusions: The positive rates of FAK and PTEN expression increase and decrease with the increase of glioma pathological grade,respectively. These tumor marker expressions can help determine the pathological stage and prognosis of glioma,and further guide clinical treatment.

       

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