Open Access

Overexpression of N‑myc downstream‑regulated gene 1 inhibits human glioma proliferation and invasion via phosphoinositide 3‑kinase/AKT pathways

  • Authors:
    • Wei Ma
    • Meng Na
    • Chongyang Tang
    • Haiyang Wang
    • Zhiguo Lin
  • View Affiliations

  • Published online on: March 13, 2015     https://doi.org/10.3892/mmr.2015.3492
  • Pages: 1050-1058
  • Copyright: © Ma et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].

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Abstract

N‑myc downstream‑regulated gene 1 (NDRG1) was previously shown to exhibit low expression in glioma tissue as compared with that in normal brain tissue; however, the role of NDRG1 in human glioma cells has remained to be elucidated. The present study used the U87 MG and SHG‑44 human glioma cell lines as well as the normal human astrocyte cell line 1800, which are known to have differential NDRG1 expression. Small interfering (si)RNA targeting NDRG1, and NDRG1 overexpression vectors were transfected into the SHG‑44 and U87 MG glioma cells, respectively. Cell proliferation, invasion, apoptosis and cell cycle arrest were subsequently examined by MTT assay, transwell chamber assay, flow cytometry and western blot analysis, respectively. Furthermore, a subcutaneous tumor mouse model was used to investigate the effects of NDRG1 on the growth of glioma cells in vivo. Overexpression of NDRG1 was shown to inhibit cell proliferation and invasion, and induce apoptosis in the U87 MG glioma cells, whereas NDRG1 downregulation increased proliferation, suppressed apoptosis and promoted invasion of the SHG‑44 glioma cells. In addition, in the subcutaneous tumor mouse model, overexpression of NDRG1 in U‑87 MG cells suppressed tumorigenicity in vivo. The findings of the present study indicated that NDRG1 is required for the inhibition of gliomagenesis; therefore, targeting NDRG1 and its downstream targets may represent novel therapies for the treatment of glioma.
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July-2015
Volume 12 Issue 1

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Ma W, Na M, Tang C, Wang H and Lin Z: Overexpression of N‑myc downstream‑regulated gene 1 inhibits human glioma proliferation and invasion via phosphoinositide 3‑kinase/AKT pathways. Mol Med Rep 12: 1050-1058, 2015.
APA
Ma, W., Na, M., Tang, C., Wang, H., & Lin, Z. (2015). Overexpression of N‑myc downstream‑regulated gene 1 inhibits human glioma proliferation and invasion via phosphoinositide 3‑kinase/AKT pathways. Molecular Medicine Reports, 12, 1050-1058. https://doi.org/10.3892/mmr.2015.3492
MLA
Ma, W., Na, M., Tang, C., Wang, H., Lin, Z."Overexpression of N‑myc downstream‑regulated gene 1 inhibits human glioma proliferation and invasion via phosphoinositide 3‑kinase/AKT pathways". Molecular Medicine Reports 12.1 (2015): 1050-1058.
Chicago
Ma, W., Na, M., Tang, C., Wang, H., Lin, Z."Overexpression of N‑myc downstream‑regulated gene 1 inhibits human glioma proliferation and invasion via phosphoinositide 3‑kinase/AKT pathways". Molecular Medicine Reports 12, no. 1 (2015): 1050-1058. https://doi.org/10.3892/mmr.2015.3492