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The Snail family transcriptional repressor 1 (SNAI1) is known to promote metastatic phenotypes in renal cell carcinoma (RCC). However, the mechanism by which SNAI1 promotes RCC metastasis remains largely unexplored. Here, bioinformatics and quantitative validation revealed that miR-211-5p was downregulated in metastatic RCC clinical specimens compared with nonmetastatic RCC tissues. Overexpression of miR-211-5p suppressed RCC cell migration and invasion via downregulation of SNAI1 expression. Luciferase reporter assays demonstrated that miR-211-5p directly targeted 3'-UTR of SNAI1. Furthermore, miR-211-5p decreased xenograft tumor weight and reduced in vivo tumor metastasis in mice. These findings indicate that miR-211-5p-mediated inhibition of SNAIL1 expression contributes to the suppression of RCC progression.Implications: Targeting the miR-211-5p/SNAI1 signaling pathway may be a novel therapeutic approach for the treatment of RCC metastasis. Mol Cancer Res; 15(4); 448-56. ©2017 AACR. ©2017 American Association for Cancer Research.

Citation

Kefeng Wang, Wei Jin, Peng Jin, Xiang Fei, Xia Wang, Xiaonan Chen. miR-211-5p Suppresses Metastatic Behavior by Targeting SNAI1 in Renal Cancer. Molecular cancer research : MCR. 2017 Apr;15(4):448-456

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PMID: 28057716

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