胃癌组织中Livin的表达及意义

目的 检测胃癌组织以及胃癌细胞株中Livin的表达,研究其与胃癌发生、发展的关系.方法 (1)采用免疫细胞化学染色确定Livin在胃癌中表达的部位.(2)用RT-PCR和Western blot检测Livin mRNA和蛋白在胃癌、癌旁、胃溃疡组织中的表达.结果 Livin在胃癌细胞株SGC-7901的细胞核和细胞质中均有表达.30例胃癌组织中Livin-α阳性表达率为67%(20/30).癌旁和胃溃疡组织中没有Livin-α、Livin-β表达.胃癌组织中Livin-α阳性表达率随TNM分期增加而增高(x2=11.719,P<0.05).Livin的表达率在胃癌的分化程度、生长部位、年龄、性别等方面比较差异无统计学意义(x2=1.607,0.000,0.156,0.419,P>0.05).结论 Livin-α在胃癌组织中的高表达,与胃癌的临床病理分级、分期有关,并在胃癌的发生、发展过程中起重要作用.

Expression and significance of Livin in gastric cancer tissues

Objective To detect the expression of Livin in gastric cancer tissues and cells, and investigate its relation to tumorigenesis and progression of gastric cancer cells. Methods (1) The expression of Livin in gastric cancer tissues was located by immunocytochemisty. (2) Livin mRNA and protein expression in adjacent tissues of carcinoma, gastric ulcers and gastric cancer tissues were detected by RT-PCR and Western blot. Results The expression of Livin in the nucleus and cytoplasm of gastric cancer cell line SGC-7901 was observed. The positive rate of Livin expression in the gastric cancer tissues was 67% (20/30). There were no expression of Livin-α and Livin-β in the adjacent tissues of carcinoma and the gastric ulcers. The positive rate of Livin-α expression in the gastric cancer tissues was positively correlated with TNM stage of gastric cancer (x2=11.719, P<0.05). The expression rate of Livin in the differentiation and location of gastric cancer, age and gender of patients had no statistical difference (x2=1.607, 0.000, 0.156, 0.419, P>0.05). Conclusion Correlation of high Livin-α expression and pathologic staging of gastric cancer indicates that Livin-α may play an important role in the carcinogenesis and progression of gastric cancer.