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Pyrrolidine dithiocarbamate sensitizes U251 brain glioma cells to temozolomide via downregulation of MGMT and BCL‑XL

  • Authors:
    • Jun‑Hai Tang
    • Guo‑Hao Huang
    • Ke‑Jie Mou
    • Eric Erquan Zhang
    • Ningning Li
    • Lei Du
    • Xiao‑Peng Zhu
    • Ling Chen
    • Hui Yang
    • Ke‑Bin Zhang
    • Sheng‑Qing Lv
  • View Affiliations / Copyright

    Affiliations: Department of Neurosurgery, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China, National Institute of Biological Sciences, Beijing 102206, P.R. China, Division of Neuropathology and Department of Neurodegenerative Disease, Institute of Neurology, University College London, London WC1N 3BG, UK, Department of Neurosurgery, Chinese PLA General Hospital, Beijing 100853, P.R. China, Central Laboratory, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
    Copyright: © Tang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 5135-5144
    |
    Published online on: August 28, 2017
       https://doi.org/10.3892/ol.2017.6849
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Abstract

The current study investigated the effect of pyrrolidine dithiocarbamate (PDTC) on the proliferation, apoptosis, cell cycle and sensitivity to temozolomide (TMZ) of the U251 glioma cell line. Proliferation, apoptosis and cell cycle analysis of U251 cells following treatment with PDTC and TMZ was determined by an MTT assay and flow cytometry, respectively. The mRNA and protein expression levels of O‑6‑methylguanine‑DNA methyltransferase (MGMT), B‑cell lymphoma extra‑large (BCL‑XL) and survivin were further determined by reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) and western blotting analysis. The results revealed that treatment with TMZ, PDTC and TMZ + PDTC significantly inhibited cell proliferation, induced apoptosis and contributed to cell cycle arrest in U251 cells. A combination of PDTC and TMZ induced the highest rates of proliferation inhibition and apoptosis. PDTC treatment markedly reduced the expression levels of MGMT, BCL‑XL and survivin. The expression levels of MGMT and BCL‑XL, fwere significantly upregulated by TMZ but not by combination treatment of TMZ and PDTC. The results of the present study suggest that treatment with PDTC inhibits cell proliferation, induces apoptosis and cell cycle arrest, and enhances sensitivity to TMZ in U251 cells, which is partly induced by downregulation of MGMT and BCL‑XL.
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Copy and paste a formatted citation
Spandidos Publications style
Tang JH, Huang GH, Mou KJ, Zhang EE, Li N, Du L, Zhu XP, Chen L, Yang H, Zhang KB, Zhang KB, et al: Pyrrolidine dithiocarbamate sensitizes U251 brain glioma cells to temozolomide via downregulation of MGMT and BCL‑XL. Oncol Lett 14: 5135-5144, 2017.
APA
Tang, J., Huang, G., Mou, K., Zhang, E.E., Li, N., Du, L. ... Lv, S. (2017). Pyrrolidine dithiocarbamate sensitizes U251 brain glioma cells to temozolomide via downregulation of MGMT and BCL‑XL. Oncology Letters, 14, 5135-5144. https://doi.org/10.3892/ol.2017.6849
MLA
Tang, J., Huang, G., Mou, K., Zhang, E. E., Li, N., Du, L., Zhu, X., Chen, L., Yang, H., Zhang, K., Lv, S."Pyrrolidine dithiocarbamate sensitizes U251 brain glioma cells to temozolomide via downregulation of MGMT and BCL‑XL". Oncology Letters 14.5 (2017): 5135-5144.
Chicago
Tang, J., Huang, G., Mou, K., Zhang, E. E., Li, N., Du, L., Zhu, X., Chen, L., Yang, H., Zhang, K., Lv, S."Pyrrolidine dithiocarbamate sensitizes U251 brain glioma cells to temozolomide via downregulation of MGMT and BCL‑XL". Oncology Letters 14, no. 5 (2017): 5135-5144. https://doi.org/10.3892/ol.2017.6849
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Spandidos Publications style
Tang JH, Huang GH, Mou KJ, Zhang EE, Li N, Du L, Zhu XP, Chen L, Yang H, Zhang KB, Zhang KB, et al: Pyrrolidine dithiocarbamate sensitizes U251 brain glioma cells to temozolomide via downregulation of MGMT and BCL‑XL. Oncol Lett 14: 5135-5144, 2017.
APA
Tang, J., Huang, G., Mou, K., Zhang, E.E., Li, N., Du, L. ... Lv, S. (2017). Pyrrolidine dithiocarbamate sensitizes U251 brain glioma cells to temozolomide via downregulation of MGMT and BCL‑XL. Oncology Letters, 14, 5135-5144. https://doi.org/10.3892/ol.2017.6849
MLA
Tang, J., Huang, G., Mou, K., Zhang, E. E., Li, N., Du, L., Zhu, X., Chen, L., Yang, H., Zhang, K., Lv, S."Pyrrolidine dithiocarbamate sensitizes U251 brain glioma cells to temozolomide via downregulation of MGMT and BCL‑XL". Oncology Letters 14.5 (2017): 5135-5144.
Chicago
Tang, J., Huang, G., Mou, K., Zhang, E. E., Li, N., Du, L., Zhu, X., Chen, L., Yang, H., Zhang, K., Lv, S."Pyrrolidine dithiocarbamate sensitizes U251 brain glioma cells to temozolomide via downregulation of MGMT and BCL‑XL". Oncology Letters 14, no. 5 (2017): 5135-5144. https://doi.org/10.3892/ol.2017.6849
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