OncoTargets and Therapy (May 2021)

MiR-17 and miR-93 Promote Tumor Progression by Targeting p21 in Patients with Chordoma

  • Dong W,
  • Li J,
  • Dong X,
  • Shi W,
  • Zhang Y,
  • Liu Y

Journal volume & issue
Vol. Volume 14
pp. 3109 – 3118

Abstract

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Wei Dong,1,* Jingwu Li,2,* Xiaoliu Dong,3 Wenjian Shi,1 Yu Zhang,4 Yongliang Liu1 1Department of Neurosurgery, Tangshan People’s Hospital, Tangshan, Hebei, People’s Republic of China; 2Department of Tumor Surgery, Tangshan People’s Hospital, Tangshan, Hebei, People’s Republic of China; 3Department of Neurology, Tangshan People’s Hospital, Tangshan, Hebei, People’s Republic of China; 4Department of Neurological Intensive Care Unit, Tangshan People’s Hospital, Tangshan, Hebei, People’s Republic of China*These authors contributed equally to this workCorrespondence: Yongliang LiuDepartment of Neurosurgery, Tangshan People’s Hospital, No. 65 Shengli Road, Lunan District, Tangshan, 063001, Hebei, People’s Republic of ChinaEmail [email protected]: MicroRNAs have been implicated in the progression of various cancers. However, the role of microRNAs in chordoma remains to be further elucidated. Here, we purposed to character the role of two microRNAs, miR-17 and miR-93, and their potential mechanisms in chordoma.Methods: The expression and prognostic value of miR-17 and miR-93 were assessed by the quantitative real-time polymerase chain reaction, Kaplan–Meier survival curve, and Cox regression analysis. The effects of miR-17/93 mimics on chordoma cell proliferation, colony formation, and invasion were analyzed by CCK-8 assay, colony formation assay, and transwell assay. The downstream target of miR-17/93 was further explored via luciferase reporter assay.Results: High expression of miR-17/93 was identified in chordoma tissues, and was associated with poor prognosis. Overexpression of miR-17/93 contributed to cell proliferation, colony formation, and invasion. Mechanistically, we demonstrated that miR-17/93 directly targeted p21 and decreased the expression of p21. Besides, the rescue assay further confirmed the essential role of the miR-17/93-p21 axis in chordoma.Conclusion: Our results revealed the potential oncogenic effect of the miR-17/93 on chordoma progression, and suggested that the miR-17/93-p21 axis served as a promising therapeutic target in chordoma.Keywords: microRNA, miR-17, miR-93, p21, chordoma

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