Downregulation of miR‑136 promotes the progression of osteosarcoma and is associated with the prognosis of patients with osteosarcoma

  • Authors:
    • Yanchen Chu
    • Xiaoli Hu
    • Guangfeng Wang
    • Zhijie Wang
    • Yanjin Wang
  • View Affiliations

  • Published online on: April 1, 2019     https://doi.org/10.3892/ol.2019.10203
  • Pages: 5210-5218
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Osteosarcoma (OS) is the most common bone tumor in children and young adults, and is an aggressive tumor with poor prognosis. MicroRNAs (miRNAs) are aberrantly expressed in various types of cancer, and contribute to cancer tumorigenesis and progression. In the present study, the potential prognostic value and biological function of miRNA‑136 (miR‑136) in OS was investigated. Reverse transcription‑quantitative polymerase chain reaction analysis was used to evaluate the expression of miR‑136 in OS tissues and cell lines. Kaplan‑Meier survival analysis and Cox regression analysis were conducted to investigate the prognostic significance of miR‑136. Various in vitro cell based assays were used to evaluate the effects of miR‑136 on the biological behavior of OS cells. A luciferase assay was performed to determine the key miR‑136 targets associated with OS. The expression of miR‑136 was significantly downregulated in osteosarcoma tissues and cells compared with the normal controls (all P<0.05). Decreased miR‑136 expression was significantly associated with Enneking staging (P=0.030) and distant metastasis (P=0.016). Decreased miR‑136 expression in patients was associated with shorter overall survival compared with patients with increased expression levels (log‑rank test; P<0.05). The expression of miR‑136 was indicated as an independent prognostic factor for the patients (hazard ratio=0.496; 95% confidence interval=0.250‑0.987; P=0.046). MTT, transwell and Matrigel assays demonstrated that upregulation of miR‑136 decreased proliferation, migration and invasion of OS cells. Bioinformatics and luciferase assays demonstrated that migration and invasion enhancer 1 (MIEN1) is a direct target of miR‑136. Together, the results suggested that miR‑136 functions as a tumor suppressor gene to regulate proliferation, migration and invasion of OS cells. MIEN1 was a potential target of miR‑136. Additionally, miR‑136 may serve as a prognostic biomarker for OS.
View Figures
View References

Related Articles

Journal Cover

June 2019
Volume 17 Issue 6

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

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
APA
Chu, Y., Hu, X., Wang, G., Wang, Z., & Wang, Y. (2019). Downregulation of miR‑136 promotes the progression of osteosarcoma and is associated with the prognosis of patients with osteosarcoma. Oncology Letters, 17, 5210-5218. https://doi.org/10.3892/ol.2019.10203
MLA
Chu, Y., Hu, X., Wang, G., Wang, Z., Wang, Y."Downregulation of miR‑136 promotes the progression of osteosarcoma and is associated with the prognosis of patients with osteosarcoma". Oncology Letters 17.6 (2019): 5210-5218.
Chicago
Chu, Y., Hu, X., Wang, G., Wang, Z., Wang, Y."Downregulation of miR‑136 promotes the progression of osteosarcoma and is associated with the prognosis of patients with osteosarcoma". Oncology Letters 17, no. 6 (2019): 5210-5218. https://doi.org/10.3892/ol.2019.10203