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E-cadherin、N—cadherin在乳腺癌中表达变化及意义

来源:智榕旅游
第31卷第4期 2Ol3年8月 石河子大学学报(自然科学版) Journal of Shihezi University(Natural Science) VoI.31 NO.4 Aug. 2O13 文章编号:1007~7383【2013)04~0473—04 E—cadherin、N—cadherin 在乳腺癌中表达变化及意义 孙建平,李锋,曹玉文,蒋金芳,万国兴,李文琴 (石河子大学医学院病理系,石河子832000) 摘要:为观察乳腺浸润性导管癌中,EMT相关表型分子E-cadherin、N—cadherin蛋白表达变化,探讨EMT与乳腺 癌变、分级相关性。采用收集7O例乳腺癌组织和2O例癌旁正常组织制作组织芯片,应用免疫组化EnVision法检 测E-cadherin、N~cadherin蛋白表达。结果显示,乳腺浸润性导管癌E—cadherin阳性表达明显降低,同时N—cadher- in阳性表达明显升高,E-cadherin与N-cadherin表达呈显著相关性(r一0.405,P<O.05);乳腺癌高、中、低分化组 织中,E-cadherin阳性表达逐渐升高,同时N—eadherin阳性表达逐渐降低。由此可知,乳腺癌细胞存在EMT,EMT 参与乳腺癌变过程,并与乳腺癌恶性程度有相关性。 关键词:乳腺癌;EMT;E-cadherin;N—cadherin 中图分类号:R737.9 文献标志码:A Expression and Significance of E_‘cadherin and N_‘cadherin in Breast Carcinoma SUN Jianping,LI Feng,CAO Yuwen,JIANG Jinfang, WAN Guoxing.LI Wenqin (Department of Pathology,School of Medicine Shihezi University,Shihezi 832000,China) Abstract:To detect the EMT phenotype molecule E-cadherin and N-cadherin protein expressions in invasive ductal breast carci— noma,and to investigate the correlation between EMT and breast tumor-genesis and histological grade.E-cadherin and N—cad— herin protein expressions were determined by immunohistochemistry envision method in 70 cases of breast cancer and 20 cases of cancer adjacent normal tissue microarray.E-cadherin expression was significantly reduced in invasive ductal breast carcino— ma,Simultaneously,N-cadherin expression was significantly increased,and a significant correlation was observed between E- cadherin and N—cadherin,(r=0.405,P<O.05).Ranging from High,medium t0 low breast cancer differentiation.E-cadherin positive expression was gradually increased,while N—cadherin expression was gradually decreased.EMT in breast cancer cell was involved in breast tumor-genesis and associated with the malignancy of breast carcinoma. Key words:breast carcinoma;EMT;E—cadherin;N—eadherin 乳腺癌发病率逐年上升,严重影响女性身心健 康。研究发现乳腺癌细胞株中,上皮~间质转化(ep— ithelial—mesenehymal transition,EMT)与乳腺癌发 中,检测E—cadherin和N—cadherin蛋白表达的变 化,分析与乳腺癌发生发展的相关性。 生、发展显著正相关[1 ]。EMT变化包括表型分子 的表达变化,即上皮表型E—cadherin等表达减少 ] 1 材料与方法 1.1 材料 1.1.1 临床资料 而间质表型N—cadherin、Vimentin等表达升高 ], 其中E—cadherin表达缺失是EMT最重要标志性变 收集石河子大学医学院第一附属医院病理科 2008—2009年乳腺浸润性导管癌手术切除石蜡包埋 化。我们在人乳腺癌组织及对照癌旁正常组织标本 收稿日期:2013—05—26 基金项目:国家自然科学基金项目(30760072) 作者简介:孙建平(1985一),男,硕士研究生,专业方向为肿瘤病理学,e-mail:sun3122444@163.com。 通信作者:曹玉文(1969一),女,副教授,从事肿瘤病理学研究,e-mail:cywwb@yahoo.com.cn。 476 石河子大学学报(自然科学版) 第31卷 腺癌恶性程度或预后有相关性。 参考文献: [13 Mathew S,Fu L,Hasebe T,et a1.Tissu ̄dependent in— duction of apoptosis by matrix meta11oproteinase stability of cell surface E—cadherin by the proteasome I-J].Biochem Biophys Res Commun,2009,381(4):560— 565. r 7]Cavalloro U,Schafhauser B,Christofori.Cadherins and the tumor progression:is it all in a switch[J].Cancer Letters,2002,176(2):123-128. stromelysin-3 during amphibian metamorphosis[J]. Birth Defects Research Part C Embryo Today,2010,90 Is]Greenburg G,Hay E D.Epithelia suspended in collagen gels can lose polarity and express characteristics of mi— (1):55-66. r2]Vincent—Salomon A,Lucchesi C,Grue1 N,et a1.Inte— grated genomic and transcriptomic analysis of ductal grating mesenchymal cells[J].J Cell Biol,1982,95(1): carcinoma in situ of the breast[J].Clin Cancer Res, 2008,14(7):1956—1965. E3]Hollier B G,Evans K,Mani S A.The epithelial—to—mes— enchyma1 transition and cancer stem cells:a coalition a— gainst cancer therapiesEJ].Mammary Gland Biol Neo— plasia,2009,14(1):29—43. -14]Blick T,Widodo E,Hugo H,et a1.Epithelial mesenchy— mal transition traits in human breast cancer eel1 Iines [J].Clin Exp Metastasis,2008,25(6):629—642. [5]Davids,Josep,Martah,et a1.Functional characterization 0f E—and P—cadherin in invasive breast cancer cells[J]. BMC Cancer,2009,9:74-78. E63 Saitoh M,Shirakihara T,Miyazono K.Regulation of the 333-339. [9]包俊杰,吴诚义.E-cadherin、N-cadherin与CIN4+/CD24 一/low表型在乳腺癌中表达的相关性及其意义[J].中国 癌症杂志,2010,20(8):596-601. [1O]苏云涛,许妍洁,仇金荣,等.上皮间质转化分子标记物 在乳腺浸润性导管癌组织中的表达及临床意义[J].临 床肿瘤学杂志,2012,17(6):505—510. [11]刘志容,吴诚义.Snail在乳腺癌中的表达及其与上皮 间质转化的关系EJ].中国医药生物技术,2012,7(1): 37—41. [123 Gabbert H E,Mueller W,Sehneiders A,et a1.Prognos tic value of E—cadherin expression in 4 1 3 gastric carei— nomas[J].1nt J Caneer,1996,69(3):184—189. 

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