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P53未突变型大肠癌组织中ASPP2和iASPP的表达及意义 被引量:1

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摘要 目的探讨P53凋亡刺激蛋白家族ASPP2、i ASPP蛋白在P53未突变型(P53阴性)大肠癌组织中的表达及临床意义。方法应用免疫组化分别检测ASPP2、i ASPP蛋白在P53阴性大肠腺癌及正常大肠组织中的表达情况,并分析ASPP2、i ASPP蛋白表达与临床病理特征之间关系。结果 ASPP2蛋白在大肠腺癌组织中的阳性表达率明显低于正常大肠组织(P<0.01),i ASPP蛋白在大肠腺癌组织中的阳性表达率显著高于正常大肠组织(P<0.01)。i ASPP蛋白在大肠腺癌组织中的表达与患者性别、年龄、肿瘤大小、肿瘤部位无关(P>0.05),而与低分化程度和Dukes分期有关(P<0.05);ASPP2蛋白表达与大肠腺癌患者的性别、年龄、肿瘤大小、肿瘤部位、分化程度、Dukes分期均无关(P>0.05)。ASPP2与i ASPP在大肠腺癌组织中的表达具有相关性(C=0.697,P<0.05)。结论在P53未突变大肠癌患者,肿瘤的发生、发展与i ASPP蛋白水平升高、ASPP2蛋白水平降低有关,且两者表达密切相关。通过抑制i ASPP或激活ASPP2来提高诱导细胞凋亡功能成为大肠癌治疗的新方法。
出处 《广东医学》 CAS CSCD 北大核心 2014年第21期3363-3365,共3页 Guangdong Medical Journal
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