Open Access

Regulation of the TUG1/miR‑145‑5p/SOX2 axis on the migratory and invasive capabilities of melanoma cells

  • Authors:
    • Jiabin Deng
    • Yinqiu Li
    • Jiaqian Song
    • Fei Zhu
  • View Affiliations

  • Published online on: July 28, 2022     https://doi.org/10.3892/etm.2022.11535
  • Article Number: 599
  • Copyright: © Deng et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Melanoma is the most prevalent malignancy of cutaneous carcinomas. Taurine‑upregulated gene 1 (TUG1), a lncRNA, is a pivotal regulator of cutaneous malignancies. The present study aimed to investigate the impact and possible mechanisms of action of TUG1 behind the progression of melanomas. Reverse transcription‑quantitative PCR was conducted to detect the expression levels of TUG1, microRNA (miR)‑145‑5p and SOX2 in melanoma tissues and cell lines. Cell Counting Kit‑8 (CCK‑8) assays were performed to measure the proliferative ability of melanoma cells and transwell assays were used to examine the migration and invasion of melanoma cells. Dual luciferase reporter and RNA immunoprecipitation (RIP) assays were utilized to identify the interactions among TUG1, miR‑145‑5p and SOX2. Western blotting and immunohistochemical assays were performed to determine the expression profile of SOX2. The impact of TUG1 on melanoma tumorigenesis was assessed using tumorigenicity assays. TUG1 expression levels were elevated in melanoma tumor tissues and cell lines. Reduced TUG1 expression levels significantly inhibited the proliferative, migratory and invasive abilities of melanoma cells. The expression levels of miR‑145‑5p were decreased in melanoma tumor tissues and cell lines. TUG1 directly targeted miR‑145‑5p and downregulated miR‑145‑5p. Upregulation of TUG1 counteracted the promotion of the proliferative, migratory and invasive abilities of melanoma cells induced by the overexpression of miR‑145‑5p. SOX2 was a target of miR‑145‑5p and its expression was negatively regulated by miR‑145‑5p, while positively regulated by TUG1. TUG1 regulated SOX2 expression through sponging miR‑145‑5p. Silencing of TUG1 also inhibited melanoma tumorigenesis in mice. In conclusion, the TUG1/miR‑145‑5p/SOX2 axis regulated the migration and invasion of melanoma cells.

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September-2022
Volume 24 Issue 3

Print ISSN: 1792-0981
Online ISSN:1792-1015

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Spandidos Publications style
Deng J, Li Y, Song J and Zhu F: Regulation of the TUG1/miR‑145‑5p/SOX2 axis on the migratory and invasive capabilities of melanoma cells. Exp Ther Med 24: 599, 2022
APA
Deng, J., Li, Y., Song, J., & Zhu, F. (2022). Regulation of the TUG1/miR‑145‑5p/SOX2 axis on the migratory and invasive capabilities of melanoma cells. Experimental and Therapeutic Medicine, 24, 599. https://doi.org/10.3892/etm.2022.11535
MLA
Deng, J., Li, Y., Song, J., Zhu, F."Regulation of the TUG1/miR‑145‑5p/SOX2 axis on the migratory and invasive capabilities of melanoma cells". Experimental and Therapeutic Medicine 24.3 (2022): 599.
Chicago
Deng, J., Li, Y., Song, J., Zhu, F."Regulation of the TUG1/miR‑145‑5p/SOX2 axis on the migratory and invasive capabilities of melanoma cells". Experimental and Therapeutic Medicine 24, no. 3 (2022): 599. https://doi.org/10.3892/etm.2022.11535