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The relationships of the amplification and gene expression of EGFR with tumor proliferating activity
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF NEUROMEDICINE
- Issue:
- 12
- DOI:
- 10.3760/cma.j.issn.1671-8925.2005.12.005
- Key Word:
- 神经胶质瘤;表皮生长因子受体;扩增;免疫组化
Abstract： 目的探讨表皮生长因子受体(EGFR)在胶质瘤中扩增、过表达及其在肿瘤增殖中的作用机制.方法应用SP免疫组化法、RT-PCR、Southern印迹法检测6例正常脑组织、50例不同级别胶质瘤及2个体外胶质瘤细胞系中在EGFR蛋白水平、mRNA水平、DNA水平的表达及扩增情况,以及与肿瘤增殖活性的相关性.结果不同级别的胶质瘤中,表达与扩增程度不同,Ⅱ级与Ⅲ、Ⅳ级肿瘤之间比较具有显著性差异;EGFR过表达与Ki-67在胶质瘤中的表达呈正相关,而EGFR过表达与扩增并不一致.结论EGFR过表达与胶质瘤的增殖活性增高有密切相关性,推测EGFR过表达是肿瘤进展中的早期事件而非进展期事件.
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