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β-连环蛋白与细胞周期素D1在CIN及宫颈鳞癌中的表达

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摘要 目的通过观察宫颈鳞癌组织中β-连环蛋白(β-catenin)与细胞周期蛋白D1(cyclin D1)的表达,探讨它们在宫颈癌发生、发展过程中的作用。方法应用免疫组织化学法观察宫颈鳞癌、宫颈上皮内瘤样病变(CIN)、正常宫颈组织中β-catenin与cyclin D1的表达特点,结合临床病理资料进行统计学分析。结果 (1)β-catenin在正常宫颈组织(n=8)、宫颈上皮内瘤样病变(n=20)及宫颈鳞癌(n=42)中的异常表达率分别是0、35.0%及64.3%,三组间比较差异有统计学意义(P<0.05);β-catenin在宫颈鳞癌不同组织分级中异位阳性表达分别为:Ⅰ级25.0%;Ⅱ级63.6%;Ⅲ级91.7%(P<0.01)。在宫颈鳞癌淋巴结阳性组,β-catenin异位阳性表达率高于淋巴结阴性组(P>0.05)。(2)cyclin D1在三组中的阳性表达率则分别是0、30.0%和61.9%,三组间比较差异有统计学意义(P<0.05);cyclin D1的过度表达也与宫颈癌组织分级相关,Ⅰ级:37.5%;Ⅱ级:54.6%;Ⅲ:91.7%,三组间相比差异有统计学意义(P<0.05),cyclin D1在宫颈鳞癌淋巴结阳性组与阴性组的阳性表达率分别为70.0%和59.4%,差异无统计学意义(P>0.05)。(3)β-catenin异常表达与cyclin D1的阳性表达呈正相关(r=7.885)。结论 (1)宫颈癌中存在β-catenin和cyclin D1的异常表达,随着正常宫颈组织→CIN→宫颈鳞癌的进展,β-catenin及cyclin D1的异常表达呈递增趋势且两者存在明显的相关性。提示Wnt/β-catenin信号通路在宫颈鳞癌的发生发展中可能起重要的作用。(2)β-catenin异位表达及cyclin D1阳性表达均与宫颈鳞癌分化相关,但均与淋巴结是否转移无关。
出处 《广东医学》 CAS CSCD 北大核心 2010年第21期2824-2826,共3页 Guangdong Medical Journal
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