Open Access

circCCDC66 promotes thyroid cancer cell proliferation, migratory and invasive abilities and glycolysis through the miR‑211‑5p/PDK4 axis

  • Authors:
    • Hong Ren
    • Zhendi Song
    • Chen Chao
    • Weizheng Mao
  • View Affiliations

  • Published online on: March 26, 2021     https://doi.org/10.3892/ol.2021.12677
  • Article Number: 416
  • Copyright: © Ren et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Cancer metastasis is the main cause of death in cancer patients, including patients with thyroid cancer (TC). TC is the most common malignant endocrine tumour. In the recent years, increasing evidence has demonstrated that circular RNAs (circRNAs) serve a significant role in the development of many types of human cancer. However, the function and underlying mechanism of circCCDC66 in TC remain unclear. The present study aimed to explore the role of circCCDC66 in TC. To do so, reverse transcription quantitative PCR was used to detect the expression level of circCCDC66. Cell viability, migratory and invasive abilities, and glucose consumption were evaluated by cell counting kit 8, Transwell and glucose consumption assays, respectively. The association between circCCDC66 or pyruvate dehydrogenase kinase 4 (PDK4) and miR‑211‑5p was verified by dual‑luciferase reporter assay. The results demonstrated that circCCDC66 expression was significantly increased in TC tissues and cell lines. Furthermore, silencing circCCDC66 inhibited TC cell proliferation, migratory and invasive abilities and glycolysis in vitro. Further validation demonstrated that circCCDC66 directly interacted with the microRNA (miR) miR‑211‑5p. Subsequently, the activity of circCCDC66 was attenuated by miR‑211‑5p. In addition, the results demonstrated that circCCDC66 may promote papillary thyroid cancer progression by sponging miR‑211‑5p and increasing expression of PDK4. In conclusion, the present study demonstrated that circCCDC66 could promote TC cell proliferation, migratory and invasive abilities and invasion and glycolysis through the miR‑211‑5p/PDK4 axis. These findings suggested that targeting circCCDC66 may be considered as a promising therapeutic strategy for TC.
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May-2021
Volume 21 Issue 5

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Ren H, Song Z, Chao C and Mao W: circCCDC66 promotes thyroid cancer cell proliferation, migratory and invasive abilities and glycolysis through the miR‑211‑5p/PDK4 axis. Oncol Lett 21: 416, 2021
APA
Ren, H., Song, Z., Chao, C., & Mao, W. (2021). circCCDC66 promotes thyroid cancer cell proliferation, migratory and invasive abilities and glycolysis through the miR‑211‑5p/PDK4 axis. Oncology Letters, 21, 416. https://doi.org/10.3892/ol.2021.12677
MLA
Ren, H., Song, Z., Chao, C., Mao, W."circCCDC66 promotes thyroid cancer cell proliferation, migratory and invasive abilities and glycolysis through the miR‑211‑5p/PDK4 axis". Oncology Letters 21.5 (2021): 416.
Chicago
Ren, H., Song, Z., Chao, C., Mao, W."circCCDC66 promotes thyroid cancer cell proliferation, migratory and invasive abilities and glycolysis through the miR‑211‑5p/PDK4 axis". Oncology Letters 21, no. 5 (2021): 416. https://doi.org/10.3892/ol.2021.12677