Overexpression of ILK promotes temozolomide resistance in glioma cells

  • Authors:
    • Feng Liang
    • Bing Wang
    • Long Bao
    • Yin‑Sheng Zhao
    • Shi‑Min Zhang
    • Shu‑Qin Zhang
  • View Affiliations

  • Published online on: January 26, 2017     https://doi.org/10.3892/mmr.2017.6157
  • Pages: 1297-1304
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Abstract

The present study aimed to investigate whether overexpression of integrin-linked kinase (ILK) affects drug resistance to temozolomide (TMZ) in glioma cells. To do this, a plasmid containing the ILK gene was transfected into the SHG‑44 human glioma cell line, and cells were subsequently cultured in the absence or presence of TMZ. The expression levels of ILK, multidrug resistance‑associated protein (MRP) and multi‑drug resistance protein (MDR) were assessed in these cells. Cell growth and apoptosis were measured by MTT and Hoechst staining, and flow cytometry, respectively. In addition, the expression levels of B‑cell lymphoma 2 (Bcl‑2) and Bcl‑2‑associated x protein (Bax), and caspase‑3 activity, were evaluated. The ILK‑overexpressing SHG‑44 cell was successfully constructed, and demonstrated increased expression levels of ILK, MDR and MRP compared with untransfected cells. Cell growth in the ILK+TMZ group was significantly greater, and the percentage of apoptotic cells in the ILK+TMZ group was significantly reduced, compared with the p enhanced green fluorescent protein (EGFP)‑C1+ TMZ empty vector control group. Expression levels of the anti‑apoptotic protein Bcl‑2 were significantly increased and those of the pro‑apoptotic protein Bax were significantly decreased (P<0.01) in the ILK+TMZ group compared with the pEGFP‑C1+TMZ group. In addition, the activity of caspase‑3 in ILK+TMZ group was significantly decreased compared with the pEGFP‑C1+TMZ group (P<0.01). Overexpression of ILK therefore promoted the proliferation of SHG‑44 human glioma cells, reduced apoptosis and reduced sensitivity to TMZ via decreasing the activity of caspase‑3.
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March-2017
Volume 15 Issue 3

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

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Spandidos Publications style
Liang F, Wang B, Bao L, Zhao YS, Zhang SM and Zhang SQ: Overexpression of ILK promotes temozolomide resistance in glioma cells. Mol Med Rep 15: 1297-1304, 2017
APA
Liang, F., Wang, B., Bao, L., Zhao, Y., Zhang, S., & Zhang, S. (2017). Overexpression of ILK promotes temozolomide resistance in glioma cells. Molecular Medicine Reports, 15, 1297-1304. https://doi.org/10.3892/mmr.2017.6157
MLA
Liang, F., Wang, B., Bao, L., Zhao, Y., Zhang, S., Zhang, S."Overexpression of ILK promotes temozolomide resistance in glioma cells". Molecular Medicine Reports 15.3 (2017): 1297-1304.
Chicago
Liang, F., Wang, B., Bao, L., Zhao, Y., Zhang, S., Zhang, S."Overexpression of ILK promotes temozolomide resistance in glioma cells". Molecular Medicine Reports 15, no. 3 (2017): 1297-1304. https://doi.org/10.3892/mmr.2017.6157