clusterin 在胃癌组织及胃癌细胞株中表达的初步研究

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claudin-6及clusterin在胃癌组织及胃癌细胞株中表达的初步研究

张俊会1,郭靠山2,王光亮1,马春生3

Expression of claudin-6and clusterin in gastric carcinoma tissues and cell lines Zhang Junhui1,Guo Kaoshan2,Wang Guangliang1,Ma Chunsheng3

1Xingtai Medical College,Hebei Xingtai054000,China;2Second Affiliated Hospital of Xingtai Medical College,Hebei Xingtai 054000;3Third Hospital of Xingtai,Hebei Xingtai054000,China.

【Abstract】Objective:To study the expression and clinical significance of claudin-6and clusterin protein in gas-

tric carcinoma tissues and cell lines.Methods:The expression of claudin-6and clusterin protein were detected by

immunohistochemistry and immunocytochemistry method in normal gastric tissue,gastric dysplasia,gastric carcinoma

and gastric carcinoma cell lines(MKN28,SGC7901,BGC823).Results:The positive expression rates of claudin-6

and clusterin in gastric carcinoma tissues,gastric hyperplasia and normal gastric mucosa were53.3%,65%,100%

and60%,75%,100%,and differences among the3groups were remarkly significant(P<0.05,P<0.05).The ex-

pression of claudin-6and clusterin protein were related to tumor depth of gastric carcinoma and lymph nodes metas-

tasis,but they were not correlated with patient's age,sex and vessel invasion.In addition,the expression of claudin-6

protein was positively related to that of clusterin protein(r=0.899,P<0.05).In gastric carcinoma cell lines claudin

-6and clusterin were mostly expressed in cytoplasm and cell membrane.On the basis of the degree of differentia-

tion,the immunostaining intensities of clusterin among3cell lines(MKN28,SGC7901,BGC823)were reduced,but

those of claudin-6were not remarkly significant.Conclusion:Loss of the expression of claudin-6and clusterin play

an important role in the carcinogenesis and subsequent progression of gastric carcinoma and might be used as mean-

ingful markers of judging biological behavior of gastric carcinoma.

【Key words】gastric carcinoma;claudin-6;clusterin;immunohistochemistry

Modern Oncology2013,21(02):0370-0373

【摘要】目的:探讨claudin-6及clusterin在胃癌组织及胃癌细胞中的表达及其临床意义。方法:应用免疫

组织化学及免疫细胞化学法检测claudin-6及clusterin在正常胃黏膜、非典型增生胃黏膜、胃癌组织及胃癌

细胞株(MKN28、SGC7901、BGC823)中的表达。结果:胃癌组织、非典型增生胃黏膜及正常胃黏膜中claudin-

6及clusterin的阳性表达率分别是53.3%、65%、100%及60%、75%、100%,二者的阳性表达率在三组间有统

计学差异(均P<0.05)。在不同浸润深度及有无淋巴结转移组内claudin-6及clusterin阳性表达的差异性

有统计学意义(P<0.05),而在不同性别、年龄及脉管侵犯组内无统计学差异(P>0.05),Spearman等级相关

性分析显示claudin-6与clusterin表达呈正相关(r=0.899,P<0.05)。在三株胃癌细胞中claudin-6与

clusterin均阳性表达在细胞膜和细胞质中。依分化程度clusterin在MKN28、SGC7901、BGC823三种细胞系中

免疫染色强度逐步减弱,claudin-6在三种细胞系中免疫染色强度无明显差别。结论:claudin-6与clusterin

的缺失与胃癌发生发展及浸润转移有关,有望成为反映胃癌生物学行为有价值的标志物。

【关键词】胃癌;claudin-6;clusterin;免疫组织化学

【中图分类号】R735.2【文献标识码】A DOI:10.3969/j.issn.1672-4992.2013.02.48

【文章编号】1672-4992-(2013)02-0370-04

【收稿日期】2012-06-30

【修回日期】2012-07-21

【基金项目】河北省卫生厅医学科学研究重点项目计划(编号:20090594)

【作者单位】1邢台医学高等专科学校,河北邢台054000

2邢台医学高等专科学校第二附属医院,河北邢台

054000

3邢台市第三医院,河北邢台054000

【作者简介】张俊会(1970-),男,河北邢台人,副教授,主要从事消化系统肿瘤病理研究。

有研究表明多种上皮组织来源的肿瘤claudins表达异常,并与这些肿瘤的发生、发展密切相关[1]。胃癌是常见的消化道恶性肿瘤,有关其发生、发展的机制尚未完全阐明。为此,我们采用免疫组化法检测claudin-6蛋白在正常胃黏膜、非典型增生及胃癌组织中的表达及其与clusterin表达的关系,以探讨其在胃癌的发生、发展及浸润转移中的作用。

1资料与方法

1.1资料

全部病例来自邢台市人民医院病理科2008年2月-2009年11月存档石蜡包埋标本。胃癌组45例,包括男性33

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