Abstract

背景与目的肺腺癌发病率不断升高,而低氧诱导因子-1α(hypoxia-inducible factor-1α, HIF-1α)、环氧合酶-2(cyclooxygenase-2, COX-2)、上皮型钙粘附分子(E-cadherin)均在肿瘤细胞的分化、增殖过程中起到重要作用。本研究旨在探讨HIF-1α和COX-2、E-cadherin在肺腺癌的表达水平与患者临床病理特征之间的关系及其三者之间的内在联系。方法收集10例非肿瘤患者手术切除的正常肺组织及45例肺腺癌患者手术切除标本,应用免疫组织化学方法检测HIF-1α、COX-2、E-cadherin的表达情况。结果45例肺腺癌组织中,HIF-1α和COX-2的表达阳性率分别为60%(27/45)和40%(18/45),10例正常肺组织均未见表达。45例肺腺癌组织中E-cadherin的表达阳性率为48.9%(22/45),10例正常肺组织均见阳性表达。HIF-1α表达水平与原发肿瘤大小有密切关系(P < 0.05),但与患者年龄、吸烟与否、淋巴结转移、分化程度、术后分期无明显关系(P>0.05)。COX-2表达水平与原发肿瘤大小、淋巴结转移、术后分期、HIF-1α表达水平有密切关系(P < 0.05),但与患者年龄、吸烟与否、分化程度无明显关系(P>0.05)。E-cadherin表达水平与分化程度、淋巴结转移有密切关系(P < 0.05),但与患者年龄、吸烟与否、肿瘤最大直径、术后分期、HIF-1α的表达无明显关系(P>0.05)。结论肺腺癌组织中HIF-1α、COX-2表达增高,E-cadherin表达降低;COX-2的表达水平升高可能与HIF-1α的高表达有关,E-cadherin的表达水平与HIF-1α未发现有明显相关性。

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