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真核翻译起始因子3(Eukaryotic translation factor 3,eIF3)是由多个亚单位组成的复合因子,其中eIF3a是其最大的亚单位。很多研究表明在酵母和哺乳动物细胞中,eIF3都参与了m RNA翻译起始,并对蛋白质的合成有很好的调控作用。值得一提的是eIF3a通过调控一系列与肿瘤的生成、细胞周期的调控DNA修复等过程相关的m RNA的翻译从而在肿瘤的发生、演进和干预中发挥重要作用。此外,研究发现eIF3a对RAF-MEK-ERK信号通路有抑制作用。eIF3a对蛋白质翻译的调节及其对RAF-MEK-ERK信号通路的影响使其有望成为肿瘤治疗的新靶点。本文将着重围绕eIF3a在肿瘤发生、演进和干预中的作用进行概述。
Eukaryotic translation factor 3 (eIF3) is a complex factor composed of multiple subunits, of which eIF3a is its largest subunit. Many studies have shown that in yeast and mammalian cells, eIF3 is involved in the initiation of m RNA translation and has a good regulatory effect on protein synthesis. It is worth mentioning that eIF3a plays an important role in tumorigenesis, evolution and intervention by regulating a series of translations of m RNA related to tumorigenesis, cell cycle regulation and DNA repair. In addition, the study found that eIF3a RAF-MEK-ERK signaling pathway inhibition. The regulation of eIF3a on protein translation and its effect on RAF-MEK-ERK signal pathway make it a new target for tumor therapy. This article will focus on the role of eIF3a in tumorigenesis, evolution and intervention.