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共刺激分子PD-L1、PD-L2和B7-H4在宫颈癌的表达及临床病理特征分析

Keywords: 共刺激分子,PD-L1,PD-L2,B7-H4,宫颈癌

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Abstract:

目的研究共刺激分子PD-L1、PD-L2、B7-H4在不同恶性程度宫颈上皮组织中的表达及其与临床病理特征的关系。方法选择我院2005-2010年间确诊为宫颈癌的85例及宫颈上皮内瘤变(CINⅡ-Ⅲ)22例为实验组,选取15例正常宫颈上皮组织作为对照组,对手术切除组织采用免疫组化SP法(链霉菌抗生物素蛋白-过氧化物酶连结法)检测PD-L1、PD-L2和B7-H4的表达,统计其染色得分;并分析此三种共刺激分子的表达与子宫颈患者临床病理特征的关系。结果PD-L1、B7-H4几乎不在正常宫颈上皮中表达,上皮细胞瘤变(CINⅡ-Ⅲ)的PD-L2和B7-H4明显高于对照组(P10mm的患者组织的PD-L1明显高于浸润深度≤10mm的PD-L1表达(P<0.01);而发生了淋巴转移的宫颈癌的PD-L2和B7-H4要高于没有发生淋巴转移的(P<0.01);局部癌栓、血栓发生患者的的B7-H4要高于癌栓、血栓发生阴性的B7-H4(P<0.01)。结论人子宫颈癌细胞异常高表达PD-L1、PD-L2、B7-H4,且其高表达与肿瘤的淋巴转移及侵袭力有关。

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