E-cadherin、N-cadherin与CD44+/CD24-/low表型在乳腺癌中表达的相关性及其意义

被引：15

作者：

包俊杰

吴诚义

机构：

[1] 重庆医科大学附属第一医院内分泌外科

来源：

中国癌症杂志 | 2010年 / 20卷 / 08期

关键词：

乳腺癌; CD44+/CD24-/low表型; E-cadherin蛋白; N-cadherin蛋白; 双重免疫组织; 化学染色;

D O I：

暂无

中图分类号：

R737.9 [乳腺肿瘤];

学科分类号：

100214 ;

摘要：

背景与目的:上皮细胞-间质转化(epithelial-mesenchymal transition,EMT)可以诱导上皮细胞来源的肿瘤表达CD44+/CD24-/low表型细胞,上皮性钙黏蛋白(E-cadherin)和神经性钙黏蛋白(N-cadherin)是分别表达于上皮细胞和间质细胞的两个重要钙黏蛋白,癌细胞从E-cadherin表达向N-cadherin表达转移是EMT的一个重要机制,此钙黏蛋白转移增加了癌细胞的侵袭转移性。本研究旨在探讨CD44+/CD24-/low表型、E-cadherin及N-cadherin在乳腺癌中的表达及其意义。方法:采用免疫组织化学检测15例正常乳腺组织、20例乳腺癌癌旁组织(癌边缘2～5cm)、58例乳腺癌组织及18例腋窝转移淋巴结组织中CD44+/CD24-/low表型、E-cadherin及N-cadherin的表达,分析其与乳腺癌发生及浸润转移的关系。结果:正常乳腺组织、乳腺癌癌旁组织、乳腺癌组织和腋窝转移淋巴结组织中CD44+/CD24-/low表型表达率分别为6.7%、10.0%、41.4%和44.4%,E-cadherin阳性表达率分别为100%、90.0%、51.7%和33.3%,N-cadherin阳性表达率分别为0、15.0%、44.8%和55.6%,3种蛋白在正常乳腺组织、乳腺癌癌旁组织、乳腺癌组织和腋窝转移淋巴结组织中的表达差异均有统计学意义(P<0.05)。CD44+/CD24-/low表型表达与E-cadherin及N-cadherin表达有显著差异,且与E-cadherin表达关联程度较强,与N-cadherin表达关联程度相对较弱。E-cadherin表达与N-cadherin表达有显著差异,且具有高度相关性(P<0.05)。结论:CD44+/CD24-/low表型表达增加、E-cadherin蛋白表达降低及N-cadherin蛋白反常表达与乳腺癌的发生及浸润转移有密切的关系;在乳腺癌发展过程中,E-cadherin向N-cadherin转化及CD44+/CD24-/low表型表达增加可能发挥重要作用。

引用

页码：596 / 601

页数：6

共 10 条

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