吉林大学学报(医学版) ›› 2016, Vol. 42 ›› Issue (04): 763-767.doi: 10.13481/j.1671-587x.20160425

• 临床研究 • 上一篇    下一篇

Smad2和Smad4蛋白在乳腺癌组织中的表达及其意义

刘楠楠1, 李玉林2, 孙立伟3, 姜晶4, 张继红4   

  1. 1. 北华大学基础医学院病理教研室, 吉林 吉林 132013;
    2. 吉林大学基础医学院 病理生物学教育部重点实验室, 吉林 长春 130021;
    3. 北华大学化学与生物学院生命科学研究中心, 吉林 吉林 132013;
    4. 北华大学附属医院病理科, 吉林 吉林 132011
  • 收稿日期:2015-10-22 发布日期:2016-07-20
  • 通讯作者: 刘楠楠,讲师(Tel:0432-62031704,E-mail:liunn1976@163.com) E-mail:liunn1976@163.com
  • 作者简介:刘楠楠(1976-),女,吉林省吉林市人,讲师,医学博士,主要从事肿瘤分子病理学方面的研究。
  • 基金资助:

    国家科技部支撑计划项目资助课题(2012BAI19B05);吉林省吉林市科技局计划项目资助课题(201536069)

Expressions of Smad2 and Smad4 proteins in breast carcinoma tissue and significances

LIU Nannan1, LI Yulin2, SUN Liwei3, JIANG Jing4, ZHANG Jihong4   

  1. 1. Department of Pathology, School of Basic Medical Sciences, Beihua University, Jilin 132013, China;
    2. Key Laboratory of Pathobiology, Ministry of Education, School of Basic Medical Sciences, Jilin University, Changchun 130021, China;
    3. Life Science Research Center, School of Chemistry and Biology, Beihua University, Jilin 132013, China;
    4. Department of Pathology, Affiliated Hospital, Beihua University, Jilin 132011, China
  • Received:2015-10-22 Published:2016-07-20

摘要:

目的:研究细胞信号传导分子Smad2和Smad4蛋白在乳腺癌组织中的表达,阐明其与乳腺癌发生发展的关系及意义。方法:选取53例乳腺导管癌和50例癌周正常组织标本,应用免疫组织化学SP法检测乳腺癌组织和癌周正常组织中Smad2和Smad4蛋白的表达水平,并评估二者的表达与乳腺癌临床病理参数间的关系。结果:乳腺癌组织中Smad2蛋白表达水平明显高于癌周正常组织(Z=-2.08,P < 0.05);乳腺癌组织中Smad4蛋白表达水平明显低于癌周正常组织(Z=-5.01,P < 0.01)。乳腺癌组织中Smad2和Smad4蛋白的阳性表达率与患者年龄无关(r=0.035,P > 0.05;r=-0.077,P > 0.05),与肿瘤大小无关(r= 0.128,P > 0.05;r=0.133,P > 0.05),与淋巴结转移无关(r=0.163,P > 0.05;r=0.006,P > 0.05),与是否有远处转移无关(r=0.113,P > 0.05;r=0.126,P > 0.05),与ER的表达无关(r=0.056,P > 0.05;r=0.047,P > 0.05),与PR的表达无关(r=0.129,P > 0.05;r=0.107,P > 0.05);但与HER2的阳性表达率呈负相关关系(r=-0.388,P < 0.01;r=-0.360,P < 0.01),与乳腺癌病理分级呈负相关关系(r=-0.331,P < 0.05;r=-0.388,P < 0.01);乳腺癌组织中Smad2与Smad4的表达呈正相关关系(r= 0.830,P < 0.01)。结论:Smad2和Smad4蛋白在乳腺癌的发生发展过程中起重要作用,可能成为评估乳腺癌恶性程度及预后的重要生物学指标。

关键词: 乳腺肿瘤, 细胞信号传导分子Smad2, 细胞信号传导分子Smad4, 免疫组织化学

Abstract:

Objective: To investigate the expressions of Smad2 and Smad4 in breast carcinoma tissue, and to analyze their relationships with oncogenesis and development of breast carcinoma and significances. Methods: Fifty-three samples of breast ductal carcinoma tissue and 50 samples of surrounding normal tissue were selected. The expression levels of Smad2 and Smad4 in cancer tissue and surrounding normal tissue were detected with immunohistochemical S-P method, and the relationships between the expression levels of Smad2 and Smad4 and the clinicopathologic parameters of breast carcinoma were evaluated. Results: The expression level of Smad2 protein in the breast carcinoma tissue was significantly higher than that in the surrounding normal tissue(z=-2.08, P < 0.05);the expression level of Smad4 protein in breast carcinoma tissue was lower than that in the surrounding normal tissue(z=-5.01, P < 0.01). In breast carcinoma tissue, the Smad2 and Smad4 expressions were not significantly correlated with age(r=0.035, P > 0.05;r=-0.077, P > 0.05), tumor size(r= 0.128, P > 0.05;r=0.133, P > 0.05), lymph node invasion(r=0.163, P > 0.05;r=0.006 P > 0.05),distant metastasis(r=0.113, P > 0.05;r=0.126, P > 0.05), ER expression(r=0.056,P > 0.05;r=0.047, P > 0.05)and PR expression(r=0.129, P > 0.05;r=0.107, P > 0.05). However, the expression levels of Smad2 and Smad4 were negatively correlated with the expression of HER2 (r=-0.388, P < 0.01;r=-0.360, P < 0.01)and pathological grade(r=-0.331, P < 0.05;r=-0.388, P < 0.01).The expression of Smad2 was positively correlated to the expression of Smad4 in breast carcinoma (r=-0.83, P < 0.01). Conclusion: The expressions of Smad2 and Smad4 may play an important role in the development of breast carcinoma, and they may be used as the potential biological markers for evaluating the degree of malignancy and prognosis of breast carcinoma.

Key words: breast neoplasms, Smad2, Smad4, immunohistochemistry

中图分类号: 

  • R361