Bmi-1在宫颈癌组织中的表达及相关性研究

Expression and clinical significance of Bmi-1 oncogene in cervical carcinoma

目的 检测不同宫颈病变中Bmi-1的表达,探讨其与宫颈癌各临床病理因素的关系及意义.方法 以宫颈癌、慢性宫颈炎组织为材料,采用免疫组化染色法检测Bmi-1蛋白表达水平,并用原位杂交法检测Bmi-1 mRNA表达水平.结果 免疫组化结果显示,Bmi-1蛋白在宫颈癌组织中的表达明显高于慢性宫颈炎组织(P<0.05).原位杂交结果显示,宫颈癌组织的Bmi-1 mRNA表达水平明显高于慢性宫颈炎组织(P<0.05).Bmi-1的表达与宫颈癌肿瘤分级、临床分期等密切相关(P<0.05),而与患者的年龄、病理分型等无关(P>0.05).结论 Bmi-1在宫颈癌组织的表达状态与其发生发展关系密切,可作为反映宫颈癌生物学行为的有效指标之一.

Objective To investigate the expression and its clinicopathologic significance of Bmi-1 in different cervical diseases. Methods Immunocytochemistry was used to examined Bmi-1 protein expression in cervical carcinoma and chronic cervicitis tissue. The mRNA expression of Bmi-1 was examined by in situ hybridzation. Results Immunocytochemistry demonstrated that the levels of Bmi-1 protein in cervical carcinoma samples were significantly higher than those in chronic cervicitis tissues(P<0.05).In situ hybridration results shows that the levels of Bmi-1 mRNA in cervical carcinoma samples were significantly higher than those in chronic cervicitis tissues(P<0.05).Expression of Bmi-1 was correlated with tumor grading and clinical stage(P<0.05). On the other hand, it was not correlated with age or pathological type(P>0.05). Conclusions Overexpression of Bmi-1 in cervical carcinoma enhances carcinogenesis and invasion. It's possible that Bmi-1 serves as a good prognostic factor to indicate biologic behavior of cervical carcinoma.