APOC1蛋白在胃癌中的表达及临床意义

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目的 探讨载脂蛋白C1(APOC1)在胃癌中的表达水平及其与临床病理特征的关系.方法 应用TCGA数据库分析胃癌组织中APOC1的表达情况.收集70例胃癌组织和癌旁正常胃黏膜组织标本,采用免疫组织化学法和Western blot检测两组标本中APOC1蛋白的表达情况,分析APOC1蛋白表达的阳性表达率与胃癌患者的性别、年龄、分化程度、肿瘤直径、Lauren's分型、淋巴结转移、TNM分期等临床病理特征的关系;采用Kaplan-Meier Plotter对胃癌患者的生存情况进行分析.结果 通过TCGA数据库分析发现APOC1在胃癌中的表达高于癌旁正常胃黏膜组织.免疫组化结果显示APOC1蛋白在胃癌组织中的表达显著高于癌旁正常胃黏膜组织;Western blot实验显示在新鲜胃癌组织中检测到APOC1蛋白表达水平高于癌旁组织.APOC1蛋白在胃癌中的表达与TNM分期、淋巴结转移呈明显正相关;与患者年龄、性别、肿瘤直径、Lauren's分型和分化程度无关;生存分析发现APOC1低表达组的OS、FP、PPS均显著长于高表达组(P<0.05).结论 APOC1在胃癌组织中表达上调且与胃癌进展相关,其异常表达与胃癌患者的预后不良密切相关.APOC1有望成为胃癌诊断和评估预后的有效指标.
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