MicroRNA‑466 inhibits cell proliferation and invasion in osteosarcoma by directly targeting insulin receptor substrate 1

Molecular Medicine Reports
Yongning SunJianming Chen

Abstract

Accumulating evidence has demonstrated that microRNAs (miRNAs) are frequently dysregulated in osteosarcoma (OS), and the aberrant expression of miRNAs is associated with OS initiation and progression. Previous studies demonstrated that miRNA‑466 (miR‑466) is dysregulated, and serves important roles in various types of human cancer. However, the role of miR‑466 in the formation and progression of OS remains unclear. In the present study, the expression level of miR‑466 was identified to be markedly downregulated in OS tissues and cell lines. Additionally, miR‑466 overexpression inhibited the proliferative and invasive abilities of OS cells. In the present study, bioinformatics analyses and luciferase assays were employed to show that miR‑466 was able to directly target the 3'‑untranslated region of insulin receptor substrate 1 (IRS1) gene, negatively regulating the mRNA and the protein expression levels of IRS1 in OS cells. Furthermore, IRS1 was upregulated in OS tissues, and the increased expression level of IRS1 exhibited an inverse correlation with the expression level of miR‑466. Furthermore, IRS1 overexpression was able to partially reverse the suppressive effects of miR‑466 overexpression in OS cells. To the best of the au...Continue Reading

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Citations

Apr 23, 2021·Endocrine Regulations·Oksana S HnatiukOleksandr H Minchenko

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