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结直肠癌中同源盒基因B9的表达及临床意义

, PP. 396-400

Keywords: 结直肠癌,同源盒基因B9,转移

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Abstract:

目的通过检测结直肠癌组织中同源盒基因B9(HOXB9)基因的表达模式,探讨HOXB9基因的表达与结直肠癌患者临床病理特征的相关联系。方法应用RT-PCR、Real-timePCR及Westernblot方法分别检测HOXB9在不同转移潜能的结直肠癌细胞系、8例结直肠癌及相应癌旁组织中mRNA和蛋白表达水平的表达差异|采用免疫组化方法检测HOXB9在136例结直肠癌石蜡组织标本中的表达特点,分析其与结直肠癌临床病理特征的相关联系及意义。结果HOXB9基因在具有较高转移潜能的结直肠癌细胞系SW620、Lovo及M5中表达明显上调|在8例结直肠癌组织中HOXB9基因在mRNA及蛋白的表达明显高于相应癌旁正常组织|免疫组化的检测结果则显示在结直肠癌组织中HOXB9蛋白表达的阳性率为83.1%(113/136),强阳性率约为58.8%(80/136),HOXB9蛋白在结直肠癌组织中的表达水平高于相应癌旁组织|统计学分析结果表明,HOXB9蛋白的高表达与结直肠癌临床分期、T分期、淋巴结转移及远处转移密切相关,而与性别、年龄、肿瘤部位、肿瘤大小及分化程度无显著相关性。结论HOXB9在结直肠癌组织中的表达明显上调,其上调表达与结直肠癌的临床进展关系密切,提示HOXB9在肿瘤发生和转移中可能承担着关键作用。

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