摘要目的 探讨PED/PEA-15 mRNA及蛋白在食管癌组织中的表达情况及其临床意义.方法 应用半定量反转录-聚合酶链反应(RT-PCR)检测50例食管癌、相应癌旁组织和正常食管组织中PED/PEA-15基因的相对表达量,并通过免疫组织化学检测PED/PEA-15蛋白的表达.结果 半定量RT-PCR显示,PED/PEA-15基因在食管癌组织中均呈高表达,癌旁组织及正常食管组织呈低表达或不表达,相对表达量分别为1.14±0.49、0.59±0.31和0.53±0.22,PED/PEA-15 mRNA在食管癌组织中表达较癌旁组织、正常食管组织升高(F=44.085,P＜0.01).免疫组织化学结果显示,食管癌组织中PED/PEA-15蛋白阳性表达率高于正常食管组织和癌旁组织(x2=36.967,P＜0.001；x2=26.272,P＜ 0.001).且PED/PEA-15 mRNA及蛋白的表达与食管癌病理分级、临床分期有关(P＜0.05),而与发病年龄、性别、病理类型无相关性(P＞0.05).结论 PED/PEA-15 mRNA及蛋白在食管癌组织中表达水平明显升高,可能在食管癌的发生及发展过程中发挥重要作用.

abstractsObjective To investigate the expression of PED/PEA-15 mRNA and protein in esophageal carcinoma tissue and their clinical significances.Methods The expression of PED/PEA-15 mRNA was detected by RT-PCR,and the expression of PED/PEA-15 protein was measured by immunohistochemistry in 50 cases of esophageal carcinoma,50 cases of corresponding paracarcinoma tissue,and 50 cases of corresponding normal esophageal tissue.Results The expression of PED/PEA-15 mRNA was 1.14±0.49 in esophageal carcinoma,which was significantly higher than that in para-carcinoma tissue (0.59±0.31) and normal esophageal carcinoma tissue (0.53±0.22) (F =44.085,P ＜ 0.001).The immunohistochemistry results showed that PED/PEA-15 protein expression was significantly higher than that in para-carcinoma tissue and normal esophageal tissue (x2 =36.967,P ＜ 0.001; x2 =26.272,P ＜ 0.001).The expression of PED/PEA-15 mRNA and protein were significantly associated with pathological grade,clinical stage of esophageal carcinoma (P ＜ 0.05),but were not significantly correlated to the age of onset,gender,pathological types (P ＞ 0.05).Conclusion The expression of PED/PEA-15 mRNA and protein are increased in esophageal carcinoma,which may play an important role in the occurrence and development of esophageal carcinoma.