Abstract
MiR-374a was proved to take part in the initiation and development of several cancers. However, the molecular mechanism of miR-374a in osteosarcoma (OS) cells remains unclear. The aim of our research was to investigate the role of miR-374a in OS cells migration and clarify the potential mechanisms. Quantitative real-time PCR (qRT-PCR) and western blot analysis were applied to evaluate the expression of miR-374a and Wnt inhibitory factor-1 (WIF-1). Bioinformatical methods and luciferase reporter assay were carried out to predict and confirm the combination of miR-374a and WIF-1. Transwell and wound healing assays were performed to detect the migration capacity of OS cells. Lithium chloride (LiCl) was used to investigate the role of LiCl-activated Wnt/β-catenin signaling pathway in regulating cell migration. Our studies revealed that miR-374a was up-regulated whereas WIF-1 was down-regulated in OS cells. Besides, WIF-1 was the target of miR-374a by performing luciferase reporter assay. By transfection of miR-374a inhibitor and/or WIF-1 siRNA to OS cells, we found that miR-374a promoted the migration of OS cells. In addition, the inhibition of WIF-1 abolished the miR-374a inhibitor-induced migration suppression of OS cells. LiCl experiment revealed that miR-374a promoted OS cells migration by regulating Wnt/β-catenin signaling. In conclusion, miR-374a promotes OS cells migration by activating Wnt/β-catenin signaling pathway via targeting WIF-1.
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Acknowledgements
This work was supported the Development Program of Kunming University of Science and Technology (Grant No.: KKSY201560051), Yunnan Provincial Science and Technology Department-Kunming Medical University Joint Special Project (Grant No.: 2015FB095) and the Basic Research Project of Yunnan Provincial Science and Technology (Grant No.: 2018FB119).
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Li, W., Meng, Z., Zou, T. et al. MiR-374a Activates Wnt/β-Catenin Signaling to Promote Osteosarcoma Cell Migration by Targeting WIF-1. Pathol. Oncol. Res. 26, 533–539 (2020). https://doi.org/10.1007/s12253-018-0556-8
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DOI: https://doi.org/10.1007/s12253-018-0556-8