lncRNA HOTAIRM1 regulates cell proliferation and the metastasis of thyroid cancer by targeting Wnt10b

Li,Chenyao; Chen,Xinxin; Liu,Tao; Chen,Guang

doi:10.3892/or.2020.7919

lncRNA HOTAIRM1 regulates cell proliferation and the metastasis of thyroid cancer by targeting Wnt10b

Authors:
- Chenyao Li
- Xinxin Chen
- Tao Liu
- Guang Chen
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Affiliations: Department of Colorectal and Anal Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China, Department of Burn Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China, Department of Thyroid Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
Published online on: December 31, 2020 https://doi.org/10.3892/or.2020.7919
Pages: 1083-1093
Copyright: © Li et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Long non‑coding RNAs play a role in a variety of malignancies, such as thyroid cancer (TC). However, the effects and function of lincRNA HOTAIRM1 (LINC HOTAIRM1) in TC remains obscure. In the present study, the expression of HOTAIRM1 was evaluated in TC tissues and cells by RT‑qPCR and the association between the lncRNA and disease progression was assessed. In vitro, the biological function of HOTAIRM1 was assessed in TC. Moreover, changes in the expression of Wnt10b were measured by western blot analysis. In addition, MTT assay, bioinformatics analysis and luciferase assays were performed to determine the target binding effect between LINC HOTAIRM1 and miR‑148a, as well as that between Wnt10b and miR‑148a. The changes in the metastatic ability of TPC‑1 and BCPAP cells were evaluated by Transwell assay. The pronounced upregulated expression of HOTAIRM1 was evident in TC cells and tissues, and was associated with TNM stage and lymph node metastasis. When HOTAIRM1 was knocked down, this inhibited the proliferative and invasive abilities of TPC‑1 and BCPAP cells in vitro. The knockdown of this lncRNA also increased the expression of microRNA‑148a (miR‑148a) and decreased Wnt10b expression in these cells, whereas transfection with miR‑148a inhibitor was sufficient to overcome this Wnt10b downregulation. In line with these results, the overexpression of miR‑148a markedly suppressed Wnt10b expression, whereas miR‑148a inhibition resulted in the opposite effects. The overexpression of Wnt10b was also sufficient to overcome the effects of miR‑148a mimics on TPC‑1 and BCPAP cells. Taken together, these results suggest that miR‑148a and Wnt10b are downstream effectors of the HOTAIRM1 signaling pathway in TC. This HOTAIRM1/miR‑148a/Wnt10 axis may thus be amenable to therapeutic targeting in order to improve disease outcomes in patients with TC.

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