PI3k／Akt蛋白及mRNA在60例胃癌中的表达及意义

目的：探讨磷脂酰肌醇3激酶（PI3K）、蛋白激酶 B（Akt）在胃癌组织及远端正常组织中的表达情况，分析其表达与胃癌临床病理特征之间的关系。方法应用免疫组化 S-P 法、逆转录聚合酶链反应（RT-PCR）检测60例胃癌组织和25例正常胃组织（距癌边缘10 cm 以上的胃组织）中 PI3K、Akt 蛋白及 mRNA 的表达。结果PI3K、Akt 在胃癌组织中的表达均明显高于在远端正常胃组织中的表达，差异有统计学意义（P ＜0．01），二者在胃癌组织中的表达均与胃癌的分化程度、TNM 分期、浸润深度、淋巴结转移情况相关（P ＜0．05）。结论PI3k／Akt 蛋白及 mRNA 参与了胃癌的发生、发展、浸润转移，在胃癌的癌变过程中起着重要作用。

Expression of PI3k/Akt protein and mRNA in 60 cases of gastric carcinoma and its significance

Objective To explore the expression of phosphoinositide 3 kinase (PI3K)and Akt in gastric carcinoma tissues and the distal normal tissues,and to analyze their correlation with the clinical pathologic characteristics of gastric cancer.Methods The S-P immunohistochemistry and RT-PCR were used to detect the expression of PI3K and Akt protein and mRNA in 60 cases of gastric carcinoma tissues and 25 cases of normal gastric mucosal tissues.Results The expression of PI3K and Akt in the gastric carcinoma tissues was significantly higher than that in the distal normal gastric tissues with statistical difference (P <0.05)and their expression in gastric carcinoma tissues was significantly related with the pathologic differentiation degree,TNM stage,invasion depth and lymph node metastasis (P <0.05).Conclusion PI3k/Akt protein and mRNA participate in the occurrence,development, infiltration and metastasis process of gastric cancer,and play an important role in the canceration of gastric carcinoma.