结肠癌组织中PKCβ1、COX-2及nm23-H1的表达及其意义

The expressions and clinical significance of PKCβ1,COX-2 and nm23-H1 in human colon cancer

目的:研究结肠癌、结肠腺瘤和癌旁正常结肠粘膜组织中蛋白激酶C(PKCβ1)、环氧化酶-2(COX-2)及转移抑制基因nm23-H1的表达及其临床意义。方法:65例结肠癌、16例结肠腺瘤和8例癌旁结肠粘膜组织采用免疫组织化学法检测PKCβ1、COX-2及nm23-H1的表达。结果:PKCβ1表达在结肠癌与腺瘤和正常黏膜差异显著(P<0.01),表达率和表达强度依次递减。COX-2在结肠癌、结肠腺瘤和正常结肠粘膜组织中的表达差异显著,结肠癌组织中C0X-2的表达与结肠癌分化程度、淋巴结和远处转移以及Dukes分期有关,与年龄和性别无关。nm23-H1的表达在结肠癌、结肠腺瘤和正常结肠黏膜组织中差异有显著性(P<0.01),结肠癌组织中nm23-H1的表达与分化程度、远处转移及Dukes分期有关,但与其它临床病理资料无关。结论:PKCβ1可能与结肠黏膜上皮增生有关,可能参与了结肠的癌变过程,并可能在癌变早期发生改变。COX-2异常表达可能是结肠癌发生的早期事件,且在结肠癌的发生、发展中起一定作用。nm23-H1的表达下调,可促使结肠癌细胞获得进一步恶性分化及远处转移的潜能。

Objective:To study the expressions and clinical significance of PKC,COX-2 and nm23-H1 in human colon cancer,adenomatous polyps and normal para-cancer colon mucosa.Methods:Expressions of PKC,COX-2 and nm23-H1 proteins 65 cases of colon cancer,16 cases of adenomas and 8 cases of para-cancer mucosa were detected by immunohistochemical staining.Results:The expression of PKCβ1 in carcinoma tissues was significantly stronger than in adenoma and normal colon mucosa,and their expression rate and intensity were grad...