p15和p27蛋白在鼻咽癌中的表达及其相关意义

目的研究周期素依赖激酶蛋白质类p15和p27蛋白在鼻咽癌（nasopharyngeal carcinoma,NPC）组织中的表达,探讨它们之间的关系与NPC生物学行为及预后的相关性。方法应用免疫组织化学EnVision两步法检测43例NPC组织和21例鼻咽黏膜慢性炎症组织,即非癌鼻咽组织（non-tumor nasopharyngeal,NP）中p15和p27表达水平。结果①NPC组织中p15和p27阳性表达率分别为65.1%和69.7%,与NP组比较,差异有统计学意义（P〈0.05）;②p15和p27蛋白在NPC中的表达与NPC临床分期、淋巴结转移、脑神经侵犯及治疗后5年生存率无关（P〉0.05）;③p15、p27阳性表达之间有相关性（P〈0.05）。结论p15蛋白和p27蛋白的表达缺失对NPC的发生起一定作用。

Expression and their clinical significance of p15,p27 in nasopharyngeal carcinoma

OBJECTIVE To evaluate the roles of p15,p27 gene protein and expression in nasopharyngeal carcinoma（NPC）.METHODS The EnVision immunohistochemical method was used to detect the expression of p15,p27 gene protein in nasopharyngeal carcinoma tissues of 43 NPC cases and non-tumor nasopharyngeal tissues of 21 cases.RESULTS ① The positive expression rates of p15,p27 gene protein were 65%,68% in NPC respectively.There were significant differences between NPC and non-tumor group（P〈0.05）.②The expression of p15,p27 protein had no significant correlation to clinical stage,lymph node metastases,cranial nerve invasion and the 5-year survival rate of the patients（P〈0.05）.③The positive expression of p15 gene protein was correlated to the positive expression of p27 gene protein（P〈0.05）.CONCLUSION The negative expression of p15 and p27 gene protein may play definite roles in the pathogenesis and development of nasopharyngeal cancer.