鼻咽癌组织C-erbB-2表达与细胞增殖和预后的关系

The relationship between C-erbB-2 expression with cell proliferativeactivity and prognosis of nasopharyngeal carcinomas

应用免疫组化及原位杂交方法，对良恶性鼻咽组织中Ｃ－ｅｒｂＢ－２表达及增殖细胞核抗原（ＰＣＮＡ）进行检测。结果显示：鼻咽癌（ＮＰＣ）组织中Ｃ－ｅｒｂＢ－２蛋白和ｍＲＮＡ阳性率分别为８７．８％和８４．０％，二者同时表达为８４．０％；癌旁粘膜中二者阳性率分别为７４．６％和７６．５％，同时表达为８２．４％。泡状核细胞癌ＰＣＮＡＳⅡ值明显高于低分化鳞癌（Ｐ＜０．０１）。癌组织中Ｃ－ｅｒｂＢ－２蛋白阳性病例ＰＣＮＡＳⅡ值高于阴性病例（Ｐ＜０．０５）。提示：Ｃ－ｅｒｂＢ－２癌基因的过度表达以及由此导致的细胞异常增殖与ＮＰＣ发生发展有关；Ｃ－ｅｒｂＢ－２和ＰＣＮＡ联合检测。

C-erbB-2 and proliferating cell nuclear antigen(PCNA) were detected by immunohistochemical and in situ hybridization methods in nasopharyngeal carcinomas(NPC) and pericarcinomatous tissues(PCT). Some NPC cases were followed up for more than 5 years. Results: The positive rates of CerbB2 protein and CerbB2 mRNA expression were 87.8%, and 84.0%, respectively in NPC and 74.6% and 76.5%, respectively in PCT. There was a coexpression of C-erbB-2 protein and mRNA. The significant difference for PCNA staining intensity index(SⅡ) existed in the vesiconuclear and poorly differentiated types of NPC and in the C-erbB-2 staining cases of NPC. No correlation was found between the expression of C-erbB-2 protein and the clinical stage and metastasis as well as survival rate. Conclusion: The C-erbB-2 gene overexpression and cell abnormal proliferation are associated with the carcinogenesis and development of NPC. It is helpful to examine both C-erbB-2 gene expression and PCNA in NPC to evaluate the malignant degree and the effect of radiotherapy.