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Wilms’ tumor is the most common type of renal tumor in children. MicroRNAs (miRNAs) are small noncoding RNAs that play crucial regulatory roles in tumorigenesis. We aimed to study the expression profile and function of miR-27a-5p in Wilms’ tumor. miR-27a-5p expression was downregulated in human Wilms’ tumor tissues. Functionally, overexpression of miR-27a-5p promoted cell apoptosis of Wilms’ tumor cells. Furthermore, upregulated miR-27a-5p delayed xenograft Wilms’ tumor tumorigenesis  in vivo . Bioinformatics analysis predicted that miR-27a-5p directly targeted the 3′-untranslated region (3′-UTR) of PBOV1, and luciferase reporter assay confirmed the interaction between miR-27a-5p and PBOV1. The function of PBOV1 in Wilms’ tumor was evaluated  in vitro , and knockdown of PBOV1 dampened cell migration. In addition, overexpression of PBOV1 antagonized the tumor-suppressive effect of miR-27a-5p in Wilms’ tumor cells. Collectively, our findings reveal the regulatory axis of miR-27a-5p/PBOV1 in Wilms’ tumor, and miR-27a-5p might serve as a novel therapeutic target in Wilms’ tumor.

MicroRNA-27a-5p Inhibits Proliferation, Migration, and Invasion and Promotes Apoptosis of Wilms’ Tumor Cell by Targeting PBOV1