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MicroRNAs (miRs) are a class of small non-coding RNAs that are involved in the regulation of gene expression, and in cancer development and progression. In the present study, miR-320 expression was found to be significantly reduced in glioma tissue in comparison with that in adjacent healthy tissues. In the present study, in vitro analyses demonstrated that overexpression of miR-320 inhibited cell proliferation and metastasis, while antisense miR-320 oligonucleotides enhanced cell proliferation and migration in U251 and SHG-44 glioma cell lines, compared with that in negative control cells. Protein expression of E2F1, a cell-cycle regulator, was negatively regulated by miR-320. Therefore, the present study provides novel insights into the association between miR-320 and glioma development.

MicroRNA-320 inhibits cell proliferation in glioma by targeting E2F1