a Programa de Recerca en Càncer ; Institut Hospital del Mar d'Investigacions Mèdiques (IMIM); Parc de Recerca Biomèdica de Barcelona; Doctor Aiguader; Barcelona, Spain.
Cell Adh Migr. 2014;8(4):418-28. doi: 10.4161/19336918.2014.969998.
The epithelial to mesenchymal transition (EMT) consists of a rapid change of cell phenotype, characterized by the loss of epithelial characteristics and the acquisition of a more invasive phenotype. Transcription factors regulating EMT (Snail, Twist and Zeb) are extremely labile proteins, rapidly degraded by the proteasome system. In this review we analyze the current mechanisms controlling degradation of EMT transcription factors, focusing on the role of new E3 ubiquitin-ligases involved in EMT. We also summarize the regulation of the stability of these EMT transcription factors, specially observed in different stress conditions, such as hypoxia, chemotherapeutic drugs, oxidative stress or γ-irradiation.
上皮间质转化(EMT)包括细胞表型的快速变化,其特征是上皮特征的丧失和更具侵袭性表型的获得。调节 EMT 的转录因子(Snail、Twist 和 Zeb)是极不稳定的蛋白质,可被蛋白酶体系统迅速降解。在这篇综述中,我们分析了目前控制 EMT 转录因子降解的机制,重点关注了新的 EMT 参与的 E3 泛素连接酶的作用。我们还总结了这些 EMT 转录因子稳定性的调节,特别是在不同的应激条件下,如缺氧、化疗药物、氧化应激或 γ 辐射下的调节。