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Initiation of mRNA translation in oncogenesis: the role of eIF4E.

机译:在肿瘤发生中启动mRNA翻译:eIF4E的作用。

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摘要

The eukaryotic initiation factor 4E (eIF4E) is a key regulator of protein translation whose function is activated by the Akt and Ras proto-oncogenic signal transduction pathways. eIF4E enhances the translation of mRNAs encoding several genes involved in tumorigenesis and acts as a proto-oncogene, in vitro, when overexpressed in immortalized cells. Importantly, eIF4E is frequently found overexpressed in human cancers of multiple histological origins. However, in vivo evidence of the eIF4E neoplastic potential was lacking until now. Here we discuss recent findings that demonstrate eIF4E's oncogenic role in vivo through direct genetic approaches in the mouse, and identify novel oncogenic functions for this initiation factor in cooperative tumorigenesis and response to therapy.
机译:真核起始因子4E(eIF4E)是蛋白质翻译的关键调节因子,其功能由Akt和Ras原癌基因信号转导途径激活。当在永生化细胞中过表达时,eIF4E增强了编码与肿瘤发生有关的几个基因的mRNA的翻译,并在体外充当原癌基因。重要的是,经常在多种组织学起源的人类癌症中过度表达eIF4E。但是,到目前为止,仍缺乏体内有关eIF4E肿瘤潜能的证据。在这里,我们讨论最近的发现,这些结果通过小鼠中的直接遗传学方法证明了eIF4E在体内的致癌作用,并确定了该起始因子在协同肿瘤发生和治疗反应中的新型致癌功能。

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