【摘要】 背景与目的:胶质母细胞瘤是颅内最常见的肿瘤之一,其发病率和死亡率均较高,但我们对其分子生物学机制仍了解甚少。本研究应用低密度表达谱芯片检测人脑原发胶质母细胞瘤组织中酪氨酸激酶受体通路相关基因的表达情况,进一步分析其表达变化的意义。方法:使用TaqMan低密度表达芯片技术检测26个酪氨酸激酶受体通路相关基因在10例原发胶质母细胞瘤及9例正常脑组织(脑外伤减压术中所取大脑组织)并通过统计学分析其在胶质母细胞瘤和正常脑组织中的表达差异。结果:在正常脑组织中,丝裂原活化蛋白激酶(MAPK)系统的两个基因MAP2K1及MAP2K4的Ct值分别为1.6±1.7和2.2±2.1,而在原发胶质母细胞瘤中的Ct值分别为3.9±1.5和5.0±2.0,其与正常脑组织的Ct差值分别为-2.3和-2.8(P<0.05)。结论:MAP2K1和MAP2K4基因在原发胶质母细胞瘤中的表达明显下调;酪氨酸激酶受体通路相关基因中MAPK系统基因的表达差异可能与原发胶质母细胞瘤的发生、发展密切相关。更多还原

【Abstract】 Background and purpose:Glioblastoma is one of the most common intracranial tumors, the morbidity and mortality are both high, and the molecular biological mechanism of the disease is still unclear. In this study, we detected the gene expression of tyrosine kinase receptor (TKR) pathway in primary glioblastoma(GBM) with low-density array, furthermore we analyzed the significance of the gene expression change. Methods:We detected 26 genes of RTK pathway in 10 primary GBM tissues and 9 normal brain tissues (gained from the decompression operation of brain trauma), and analyzed the different expressions of these two kinds of tissues by statistic method.Results:The Ct values of MAP2K1 and MAP2K4 in normal brain tissues were 1.6±1.7 and 2.2±2.1, the Ct values of MAP2K1 and MAP2K4 in primary GBM tissues were 3.9±1.5 and 5.0±2.0, and the Ct different values between normal brain tissues and primary GBM tissues of both genes were -2.3 and -2.8(P<0.05).Conclusions:The two genes MAP2K1 and MAP2K4 of mitogen-activated protein kinase(MAPK) pathway were significantly down-regulated in primary GBM tissues compared to normal brain tissues; MAPK genes of RTK pathway may be closely related to the initiation and development of primary GBM.更多还原