MiR-490-5p functions as tumor suppressor in childhood neuroblastoma by targeting MYEOV

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Neuroblastoma (NB) is the most common extracranial solid tumor derived from neural crest in children. Recently, the role of miRNA has been studied extensively in the development of NB. Here, we investigated the clinical significance of microRNA-490-5p (miR-490-5p) in NB. A total of 72 pairs of NB tumor tissues and matched adjacent normal nerve tissues were collected from NB patients. The expression of miR-490-5p was significantly down-regulated in NB tissues and cell lines using quantitative real-time PCR. Using Pearson Chi-square test and Kaplan–Meier analysis, we found that significantly decreased miR-490-5p levels were correlated with INSS stage, lymph-node metastasis, and poor survival prognosis in NB patients. MiR-490-5p overexpression significantly suppressed cell proliferation migration, invasion, and induced cell cycle G0/G1 arrest and cell apoptosis in NB cell lines (SH-SY5Y and SK-N-SH) using CCK-8, flow cytometry, and transwell assays. Mechanistically, MYEOV was confirmed as a target gene of miR-490-5p by luciferase reporter assay. Furthermore, MYEOV knockdown imitated, while overexpression rescued the changes in the biological features of miR-490-5p on NB cells. Our results demonstrated for the first time that miR-490-5p functions as a tumor suppressor in NB by targeting MYEOV, which might provide novel approaches for the treatment of NB.

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Correspondence to Xin Zhang.

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All the protocols in this study were approved by the Ethics Committee of Jinzhou Medical University First Affiliated Hospital (Approval number: FM2314-124).

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Wang, J., Zhang, X., Yao, H. et al. MiR-490-5p functions as tumor suppressor in childhood neuroblastoma by targeting MYEOV. Human Cell 33, 261–271 (2020).

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  • Neuroblastoma
  • miR-490-5p
  • Prognosis
  • Tumor suppressor