摘要
巨噬细胞抑制因子-1(macrophage inhibitory gytokine-1,MIC-1)是人转化生长因子β(transforming growth factor-β,TGF-β)超家族中的一个重要分支成员,在胃癌等多种肿瘤有过度表达.大量研究表明,MIC-1在胃癌早期通过诱导凋亡和抑制过度增生表现抑癌生物学活性,但近期有报道,在胃癌进展期因为内环境等的变化,MIC-1具有促癌作用,其机制包括:抑制连环蛋白cateninδ1基因的表达;上调uPA系统增强胃癌肿瘤细胞侵袭性;诱导ErbB2受体酪氨酸激酶在人体胃癌细胞等过度表达.胃癌组织过度表达MIC-1和uPA提示预后不良,故可以作为判断胃癌预后的指标.
Macrophage inhibitory cytokine-1(MIC-1) is a divergent member of human transforming growth factor β(TGF-β) superfamily, which is overexpressed in a variety of human cancers, including gastric cancer. Numerous studies have shown that MIC-1 exerts tumor-suppressing activity through inducing apoptosis and inhibiting excessive proliferation in early gastric cancer. However, recent reports show that MIC-1 may contribute to the malignant progression of gastric cancer because of changes in internal environment in advanced gastric cancer. The mechanisms involved include: inhibiting the expression of catenin 61 gene, upregulating the urokinase plasminogen activator (uPA) system to enhance invasiveness of gastric cancer cells, and inducing overexpression of ErbB2 receptor tyrosine kinase in human gastric cancer cells. The overexpression of MIC-1 and uPA in gastric cancer cells indicates a poor prognosis. Therefore, MIC-1 and uPA can be used as indicators to predict the prognosis of gastric cancer.
出处
《世界华人消化杂志》
CAS
北大核心
2009年第22期2272-2276,共5页
World Chinese Journal of Digestology
关键词
巨噬细胞抑制因子-1
胃癌
预后
Macrophage inhibitory cytokine-1
Gastric cancer
Prognosis