PURPOSE:This study was conducted to investigate the incidence of ERBB1 amplification and overexpression in samples of diffusely infiltrative (WHO grades Ⅱ-Ⅳ) pediatric brain stem glioma (BSG) and determine the relat...PURPOSE:This study was conducted to investigate the incidence of ERBB1 amplification and overexpression in samples of diffusely infiltrative (WHO grades Ⅱ-Ⅳ) pediatric brain stem glioma (BSG) and determine the relationship of these abnormalities to expression and mutation of TP53 and tumor grade. Experimental Design: After central pathology review, the incidence of ERBB1 amplification and overexpression was determined in 28 samples (18 surgical biopsy and 10 postmortem specimens) of BSG using quantitative PCR and immunohistochemistry,展开更多
目的:探讨ErbB受体反馈抑制物1(ERRFI1)在成年昆明小鼠脑组织不同部位的mRNA和蛋白质表达情况。方法:选用成年健康雌性昆明小鼠,取脑组织的额叶、顶叶、枕叶、颞叶、丘脑、小脑和海马等部位,采取RT-PCR、real time RT-PCR检测ERRFI1 mRN...目的:探讨ErbB受体反馈抑制物1(ERRFI1)在成年昆明小鼠脑组织不同部位的mRNA和蛋白质表达情况。方法:选用成年健康雌性昆明小鼠,取脑组织的额叶、顶叶、枕叶、颞叶、丘脑、小脑和海马等部位,采取RT-PCR、real time RT-PCR检测ERRFI1 mRNA在各脑区的表达情况;采取Western Blot检测ERRFI1蛋白质在各脑区的表达情况;再采取免疫组织化学技术的方法对不同部位脑组织ERRFI1蛋白质进行表达与定位情况的研究。结果:ERRFI1 mRNA在小鼠脑组织的额叶、顶叶、枕叶、颞叶、丘脑、小脑和海马等部位均有表达,且表达没有显著差异;而ERRFI1蛋白质在小脑的表达显著高于额叶、顶叶、枕叶、颞叶、丘脑和海马(P<0.05);免疫组化结果显示,ERRFI1在大脑皮质及脑干的部分神经元、海马少数锥体细胞及颗粒细胞、海马分子层及多形层的胶质细胞、小脑的部分神经元、浦肯野细胞、高尔基细胞等呈阳性表达,嗅球的小球周细胞、僧帽细胞、颗粒细胞等也呈阳性。结论:ERRFI1在成年昆明小鼠的脑组织中广泛表达。展开更多
文摘PURPOSE:This study was conducted to investigate the incidence of ERBB1 amplification and overexpression in samples of diffusely infiltrative (WHO grades Ⅱ-Ⅳ) pediatric brain stem glioma (BSG) and determine the relationship of these abnormalities to expression and mutation of TP53 and tumor grade. Experimental Design: After central pathology review, the incidence of ERBB1 amplification and overexpression was determined in 28 samples (18 surgical biopsy and 10 postmortem specimens) of BSG using quantitative PCR and immunohistochemistry,