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中华乳腺病杂志(电子版) ›› 2015, Vol. 09 ›› Issue (06) : 380 -386. doi: 10.3877/cma. j. issn.1674-0807.2015.06.007

论著

CK5/6 和Ki67 表达与乳腺癌分子病理特征关系的临床分析
邓淼1, 刘江波1,(), 刘起鹏1, 张婷1, 田燕晓2, 陈登庭1, 邢鲁奇2   
  1. 1.471003 洛阳,河南科技大学第一附属医院乳腺外科
    2.471003 洛阳,河南科技大学第一附属医院病理科
  • 收稿日期:2015-07-09 出版日期:2015-12-01
  • 通信作者: 刘江波
  • 基金资助:
    洛阳市应用技术研究与开发基金(0802021A)河南科技大学第一附属医院博士科研启动基金(0801-2014)

Correlation of CK5/6 and Ki67 expression with molecular pathological features of breast cancer

Miao Deng1, Jiangbo Liu1,(), Qipeng Liu1, Ting Zhang1, Yanxiao Tian2, Dengting Chen1, Luqi Xing2   

  1. 1.Department of Breast Surgery
    2.Department of Pathology, the First Affiliated Hospital, Henan University of Science and Technology, Luoyang 471003, China.
  • Received:2015-07-09 Published:2015-12-01
  • Corresponding author: Jiangbo Liu
引用本文:

邓淼, 刘江波, 刘起鹏, 张婷, 田燕晓, 陈登庭, 邢鲁奇. CK5/6 和Ki67 表达与乳腺癌分子病理特征关系的临床分析[J/OL]. 中华乳腺病杂志(电子版), 2015, 09(06): 380-386.

Miao Deng, Jiangbo Liu, Qipeng Liu, Ting Zhang, Yanxiao Tian, Dengting Chen, Luqi Xing. Correlation of CK5/6 and Ki67 expression with molecular pathological features of breast cancer[J/OL]. Chinese Journal of Breast Disease(Electronic Edition), 2015, 09(06): 380-386.

目的

研究CK 5/6 和Ki67 在乳腺癌组织中的表达及其临床意义。

方法

回顾性收集2011 年2 月至2014 年7 月在河南科技大学第一附属医院接受改良根治术的乳腺癌患者109 例,用免疫组织化学法检测癌组织CK5/6 和Ki67 表达,分析其与乳腺癌分子病理特征的关系。 计数资料采用χ2检验或Fisher 确切概率法,相关性分析采用Spearman 相关分析,并用Logistic 回归分析CK5/6 表达的独立影响因素。

结果

109 例乳腺癌组织中CK5/6 和Ki67 表达率分别为22.02%(24/109)、62.04%(67/108,1 例表达未能判断);三阴性乳腺癌(TNBC)中CK5/6 表达率为62.2%(23/37),显著高于非TNBC的4.6%(3/66)(χ2=41.708,P<0.001);Ki67 表达在分子分型间差异无统计学意义(χ2 =0.147,P<0.001)。 CK5/6 表达与ER、PR 及E-钙黏蛋白表达负相关(r=-0.505、-0.417、-0.239,P 均<0.050),而ER 缺失是影响CK5/6 表达的独立因素(OR=0.099,95%CI=0.023 ~0.424)。 基底样型乳腺癌(BLBC)(TNBC-CK5/6+)的E-钙黏蛋白表达显著低于非BLBC(χ2=6.669,P=0.010)。 在TNBC,仅Ki67 与组织学分级正相关外(r=0.354,P=0.043)。

结论

CK5/6 表达标记的BLBC 易发生侵袭转移的特性可能与E-钙黏蛋白表达缺失有关,而Ki67 表达可能不是识别BLBC 生物学特性的分子标记。

Objective

To study the expression of cytokeratin 5/6 (CK5/6) and Ki67 in breast cancer and clinical significance.

Methods

The clinical data of 109 breast cancer patients treated with modified radical mastectomy in the First Affiliated Hospital of Henan University of Science and Technology from February 2011 to July 2014 were retrospectively collected. The expressions of CK5/6 and Ki67 in breast cancer tissues were detected by immunohistochemical staining, and their association with molecular pathological features of breast cancer was analyzed. Numeration data was processed using χ2 test or Fisher's exact test, correlation analysis was performed using Spearman method, and Logistic regression was used for analyzing the independent factors in CK5/6 expression.

Results

The positive rates of CK5/6 and Ki67 expression in breast cancer tissue were 22.02% (24/109) and 62.04% (67/108, one case was not detected) respectively. The positive rate of CK5/6 expression was 62.2% (23/37) in triple negative breast cancer (TNBC), significantly higher than that in non-TNBC (χ2 =41.708, P<0.001); while the expression of Ki67 presented no statistical difference in different molecular subtypes of breast cancer(χ2 = 0.147,P <0.001). CK5/6 expression was negatively correlated with ER, PR, and E-cadherin expression in breast cancer (r=-0.505, -0.417, -0.239,all P <0.050). Moreover, the deficiency of ER expression was an independent factor influencing CK5/6 expression(OR=0.099,95% CI=0.023-0.424). Ki67 expression was not correlated with other molecular markers including ER, PR, HER-2 and E-cadherin. The expression of E-cadherin in basal-like breast cancer (BLBC)was significantly lower than that in non-BLBC (χ2=6.669,P=0.010). In TNBC, the expressions of CK5/6 and Ki67 were positively associated with Ki67 and histological grade (r=0.354, P=0.043).

Conclusion

The malignant biological features of invasion and metastasis in BLBC with CK5/6 positive expression may be related with E-cadherin expression deficiency, while Ki67 expression may not be a molecular marker to identify BLBC.

表1 影响乳腺癌CK5/6 表达的分子指标Logistic 回归变量赋值表
表2 109 例乳腺癌组织中CK5/6 和Ki67 表达与乳腺癌临床病理特征之间的关系
表3 109 例乳腺癌组织中CK5/6 和Ki67 表达与肿瘤分子指标的关系
表4 乳腺癌CK5/6 表达与分子指标关系的Logistic 回归分析(n=107)
表5 CK5/6 和Ki67 在不同分子分型乳腺癌中的表达(例)
表6 38 例TNBC 中CK5/6 和Ki67 表达与肿瘤分子病理特征的相关性关系
表7 CK5/6 表达标记的BLBC 与非BLBC 的分子病理特征比较
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