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Suppression of microRNA-130b inhibits glioma cell proliferation and invasion, and induces apoptosis by PTEN/AKT signaling

  • Authors:
    • Jian-Jun Gu
    • Kai-Chun Fan
    • Jian-He Zhang
    • Hong-Jie Chen
    • Shou-Sen Wang
  • View Affiliations / Copyright

    Affiliations: Stroke Center, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan 450000, P.R. China, Department of Gastroenterology, Chinese PLA General Hospital, Beijing 100853, P.R. China, Department of Neurosurgery, Fuzhou General Hospital, Fuzhou, Fujian 350025, P.R. China
    Copyright: © Gu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 284-292
    |
    Published online on: November 2, 2017
       https://doi.org/10.3892/ijmm.2017.3233
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Abstract

Glioblastoma is the most common malignant brain tumor in adults and is characterized by extensive proliferation and the diffused invasion of tumor cells. Due to the intricate signaling pathways involved in glioma progression, more effective targeted therapies and prognostic biomarkers in clinical practice are required. The suppression of proto-oncogene function or recovery of tumor suppressor gene function remains one of the primary approaches in gene therapy. The close association between the abnormal expression or mutation of microRNA (miRNA) and the tumorigenesis, progression and staging in glioma have been demonstrated previously. However, the expression pattern and specific role of microRNA‑130b (miR‑130b) in the tumor occurrence and progression of glioma are unclear. In the present study, quantitative polymerase chain reaction was performed to determine the expression level of miR-130b in 30 brain glioma patients and 3 glioma cell lines. An miR‑130b inhibitor was transfected into U87 cells to downregulate the expression of miR-130b, and assessments of cell proliferation, cell cycle, apoptosis, cell invasion and migration in vitro and nude mouse tumorigenicity in vivo were conducted. Western blotting and luciferase reporter gene technology were used to verify the downstream target gene of miR-130b, namely phosphatase and tensin homolog (PTEN). The results demonstrated that miR-130b expression was increased in glioma tissues and cell lines in comparison with non-glioma tissues or cells. The downregulated expression of miR-130b inhibited the proliferation and invasion of glioma cells, induced apoptosis of the cells in vitro and inhibited their tumorigenicity in vivo. Western blotting and luciferase reporter assays demonstrated that the PTEN gene is a direct target of miR‑130b. Western blotting revealed that the miR-130b inhibitor upregulated the expression of PTEN, inhibited AKT pathway activation, upregulated the tumor suppressor gene p27, and suppressed cyclin D1, matrix metalloproteinase 2 and 9 expression. These results suggest that the miR-130b inhibitor suppressed glioma cell proliferation and invasion via the PTEN/AKT pathway. Therefore, miR‑130b is suggested to be an effective therapeutic target for glioma.
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Copy and paste a formatted citation
Spandidos Publications style
Gu J, Fan K, Zhang J, Chen H and Wang S: Suppression of microRNA-130b inhibits glioma cell proliferation and invasion, and induces apoptosis by PTEN/AKT signaling. Int J Mol Med 41: 284-292, 2018.
APA
Gu, J., Fan, K., Zhang, J., Chen, H., & Wang, S. (2018). Suppression of microRNA-130b inhibits glioma cell proliferation and invasion, and induces apoptosis by PTEN/AKT signaling. International Journal of Molecular Medicine, 41, 284-292. https://doi.org/10.3892/ijmm.2017.3233
MLA
Gu, J., Fan, K., Zhang, J., Chen, H., Wang, S."Suppression of microRNA-130b inhibits glioma cell proliferation and invasion, and induces apoptosis by PTEN/AKT signaling". International Journal of Molecular Medicine 41.1 (2018): 284-292.
Chicago
Gu, J., Fan, K., Zhang, J., Chen, H., Wang, S."Suppression of microRNA-130b inhibits glioma cell proliferation and invasion, and induces apoptosis by PTEN/AKT signaling". International Journal of Molecular Medicine 41, no. 1 (2018): 284-292. https://doi.org/10.3892/ijmm.2017.3233
Copy and paste a formatted citation
x
Spandidos Publications style
Gu J, Fan K, Zhang J, Chen H and Wang S: Suppression of microRNA-130b inhibits glioma cell proliferation and invasion, and induces apoptosis by PTEN/AKT signaling. Int J Mol Med 41: 284-292, 2018.
APA
Gu, J., Fan, K., Zhang, J., Chen, H., & Wang, S. (2018). Suppression of microRNA-130b inhibits glioma cell proliferation and invasion, and induces apoptosis by PTEN/AKT signaling. International Journal of Molecular Medicine, 41, 284-292. https://doi.org/10.3892/ijmm.2017.3233
MLA
Gu, J., Fan, K., Zhang, J., Chen, H., Wang, S."Suppression of microRNA-130b inhibits glioma cell proliferation and invasion, and induces apoptosis by PTEN/AKT signaling". International Journal of Molecular Medicine 41.1 (2018): 284-292.
Chicago
Gu, J., Fan, K., Zhang, J., Chen, H., Wang, S."Suppression of microRNA-130b inhibits glioma cell proliferation and invasion, and induces apoptosis by PTEN/AKT signaling". International Journal of Molecular Medicine 41, no. 1 (2018): 284-292. https://doi.org/10.3892/ijmm.2017.3233
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