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Protein expression of checkpoint with fork head associated and ring finger and mutant p53 and their clinicopathological significances in gastric cancer
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- Author:
- No author available
- Journal Title:
- WORLD CHINESE JOURNAL OF DIGESTOLOGY
- Issue:
- 14
- DOI:
- 10.3969/j.issn.1009-3079.2007.14.008
- Key Word:
- CHFR基因;突变型p53;胃癌;免疫组化
Abstract： 目的:观察CHFR和P53蛋白的表达与胃癌临床病理学特征的关系,探讨其在胃癌发生发展过程中的作用及相关的分子机制.方法:利用组织芯片制作仪(美国),构建成5个包括151例胃癌及101例与其配对的正常胃黏膜、肠化生或不典型增生的组织芯片蜡块.采用Envision免疫组化二步法检测151例胃癌及101例配对癌旁胃黏膜组织中CHFR蛋白和P53蛋白的表达.结果:CHFR蛋白在非癌胃黏膜组织中阳性表达率为85.25%(52/61),在胃癌组织中阳性表达率显著降低(49.67%,75/151,P＜0.05);CHFR表达下调或缺失与胃癌患者的性别显著相关,女性患者胃癌组织中CHFR表达缺失率显著高于男性患者(64% vs 43.56%,P＜0.05).Borrman Ⅲ+Ⅳ型胃癌组织中CHFR表达缺失率显著高于Borrman Ⅰ+Ⅱ型胃癌(57.14% vs34.78%,P＜0.05).虽然不同组织学类型胃癌之间CHFR的表达无统计学差异,但本研究发现胃印戒细胞癌组CHFR表达缺失率最高(71.43%).胃癌组织中CHFR蛋白的表达缺失与肿瘤浸润深度、淋巴结转移以及mP53蛋白表达未见显著相关性(P＞0.05).结论:有丝分裂前期检查点CHFR基因表达下调或缺失在胃癌中是频发事件.可能参与胃癌的发生,其与女性、弥漫浸润型胃癌发生发展的关系可能更为密切.
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