肺鳞癌肿瘤浸润前沿细胞的EMT表型特点及临床意义

Zhongguo fei ai za zhi = Chinese journal of lung cancer(2014)

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Abstract
背景与目的肿瘤浸润前沿(invasive tumor front, ITF)细胞是指肿瘤与宿主组织交界处的细胞或浸润的细胞团,对判断患者预后具有较高的价值。本研究旨在探讨肺鳞状细胞癌(squamous cell carcinoma, SCC)ITF细胞的上皮-间叶转化(epithelial-mesenchaymal transition, EMT)表型特点,并分析与临床病理特征和预后的关系。方法采用免疫组织化学SP法检测104例肺SCC ITF细胞中上皮性标志物E-cadherin/β-catenin和间叶性标志物vimentin的表达。结果 E-cadherin在53.8%(56/104)的肺SCC ITF细胞中表达下调,较非ITF细胞表达降低(P=0.04),而vimentin在42.3%(44/104)ITF细胞中表达,较非ITF肿瘤细胞表达升高;两者均与肿瘤浸润方式、肺门淋巴结转移和患者预后有相关性(P<0.01)。β-catenin在肺SCC ITF细胞的表达阳性率为67.3%(70/104),低于非ITF细胞(P<0.01),在ITF细胞呈胞质和胞核阳性表达,并与肺门淋巴结转移密切相关。结论肺SCC ITF细胞中E-cadherin/β-catenin表达缺失和vimentin高表达可能与患者的不良预后有关。
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Key words
Lung squamous cell carcinoma,Invasive tumor front,E-cadherin,β-catenin,Vimentin
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