【摘要】 目的研究喉癌中STK15基因扩增、mRNA和蛋白表达增高在喉癌发生、发展中的作用。方法应用差异PCR方法检测40例喉鳞状细胞癌及癌旁正常对照组织STK15基因扩增的情况;应用逆转录PCR方法检测同批标本STK15mRNA表达情况;用免疫组织化学方法分析STK15蛋白表达。结果肿瘤组织中STK15基因扩增率为35%(14/40);STK15mRNA表达增高占67.5%(27/40);STK15蛋白表达的阳性率为72.5%(29/40);将扩增与表达的结果与喉癌患者的临床各项指标进行统计学分析,STK15基因扩增、STK15mRNA表达增高与肿瘤的分化程度显著相关(P<0.05);STK15蛋白表达与肿瘤的分化程度和病理分级显著相关(P<0.05)。结论喉癌中STK15基因扩增、mRNA和蛋白表达水平增高,导致中心体复制异常、染色体不稳定,可能在喉癌的发生及恶性进展中起一定作用。更多还原

【Abstract】 Objective To investigate the role ofSTK15 gene amplification and overexpression to genesis and development of laryngeal squamous cell carcinoma (LSCC). Methods STK15 gene amplification in 40 cases carcinoma tissues and normal tissues as control was detected by differential PCR approach. STK15 mRNA and protein levels were evaluated by reverse transcription-polymerase chain reaction(RT-PCR) and immunohistochemistry method. Results In 40 LSCC cases,STK15 gene amplification was found in 14 tumor tissues(35%), mRNA overexpression in 27 tumor tissues(67.5%), and protein upregulated in 29 tumor tissues(72.5%). Statistics analysis showed thatSTK15 gene amplification and mRNA overexpression were obviously associated to differentiation degree of LSCC, and protein overexpression was closely associated with both differentiation degree and pathological grades of LSCC. Conclusion This research results suggest thatSTK15 gene amplification contributes to its mRNA and protein overexpression through affecting the exact replication of centrosome and separation of chromosomes.STK15 gene thus plays a role in LSCC oncogenesis and malignant progression.更多还原