MicroRNA-205 response elements on Zinc finger E-box-binding homeobox 1 messenger RNA (miR-205 MREs on ZEB1 mRNA)

The miR-205 response elements on ZEB1 mRNA are specific sequences located within the 3'-untranslated region (3' UTR) of the Zinc finger E-box-binding homeobox 1 (ZEB1) transcript. These elements serve as binding sites for the microRNA miR-205, which acts as a critical post-transcriptional regulator of ZEB1 expression. Under physiological conditions, the binding of miR-205 to these sites facilitates the degradation of ZEB1 mRNA or inhibits its translation, thereby maintaining an epithelial cell phenotype and preventing the initiation of the epithelial-mesenchymal transition (EMT) (Gregory et al., 2008, Nature Cell Biology). In many aggressive cancers, miR-205 is downregulated, leading to the overexpression of ZEB1, which promotes tumor invasion, metastasis, and resistance to chemotherapy (Burk et al., 2008, EMBO Reports; Wellner et al., 2009, Nature Cell Biology). Consequently, these response elements are considered significant therapeutic targets; the use of miR-205 mimics or synthetic oligonucleotides designed to interact with these sites can restore ZEB1 suppression, potentially inhibiting metastatic progression and sensitizing tumor cells to standard treatments (Park et al., 2008, Genes & Development).

Other names

ZEB1 3' UTR miR-205 binding sitesmiR-205 target sites on ZEB1MicroRNA-205 response elements on ZEB1ZEB1 mRNA 3'-untranslated region

Therapeutic agents such as miR-205 mimics bind to these response elements on the ZEB1 mRNA 3' UTR, leading to translational repression or mRNA degradation, thereby inhibiting the expression of the ZEB1 protein and reversing the epithelial-mesenchymal transition (EMT) phenotype (Gregory et al., 2008, Nature Cell Biology; Burk et al., 2008, EMBO Reports).