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Article

Knockdown of NF-E2-related factor 2 inhibits the proliferation and growth of U251MG human glioma cells in a mouse xenograft model

  • Authors:
    • Xiang-Jun Ji
    • Sui-Hua Chen
    • Lin Zhu
    • Hao Pan
    • Yuan Zhou
    • Wei Li
    • Wan-Chun You
    • Chao-Chao Gao
    • Jian-Hong Zhu
    • Kuan Jiang
    • Han-Dong Wang
  • View Affiliations / Copyright

    Affiliations: Department of Neurosurgery, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China, Department of Ophthalmology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
  • Pages: 157-164
    |
    Published online on: May 15, 2013
       https://doi.org/10.3892/or.2013.2476
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Abstract

NF-E2-related factor 2 (Nrf2) is a pivotal transcription factor of cellular responses to oxidative stress and recent evidence suggests that Nrf2 plays an important role in cancer pathobiology. However, the underlying mechanism has yet to be elucidated, particularly in glioma. In the present study, we investigated the role of Nrf2 in the clinical prognosis, cell proliferation and tumor growth of human glioblastoma multiforme (GBM). We detected overexpression of Nrf2 protein levels in GBM compared to normal brain tissues. Notably, higher protein levels of Nrf2 were significantly associated with poorer overall survival and 1-year survival for GBM patients. Furthermore, we constructed the plasmid Si-Nrf2 and transduced it into U251MG cells to downregulate the expression of Nrf2 and established stable Nrf2 knockdown cells. The downregulation of Nrf2 suppressed cell proliferation in vitro and tumor growth in mouse xenograft models. We performed immunohistochemistry staining to detect the protein levels of Nrf2, Ki-67, caspase-3 and CD31 in the xenograft tumors and found that the expression levels of Nrf2 and Ki-67 were much lower in the Si-Nrf2 group compared to the Si-control group. In addition, the number of caspase-3-positive cells was significantly increased in the Si-Nrf2 group. By analysis of microvessel density (MVD) assessed by CD31, the MVD value in the Si-Nrf2 group decreased significantly compared to the Si-control group. These findings indicate that the knockdown of Nrf2 may suppress tumor growth by inhibiting cell proliferation, increasing cell apoptosis and inhibiting angiogenesis. These results highlight the potential of Nrf2 as a candidate molecular target to control GBM cell proliferation and tumor growth.
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Copy and paste a formatted citation
Spandidos Publications style
Ji X, Chen S, Zhu L, Pan H, Zhou Y, Li W, You W, Gao C, Zhu J, Jiang K, Jiang K, et al: Knockdown of NF-E2-related factor 2 inhibits the proliferation and growth of U251MG human glioma cells in a mouse xenograft model. Oncol Rep 30: 157-164, 2013.
APA
Ji, X., Chen, S., Zhu, L., Pan, H., Zhou, Y., Li, W. ... Wang, H. (2013). Knockdown of NF-E2-related factor 2 inhibits the proliferation and growth of U251MG human glioma cells in a mouse xenograft model. Oncology Reports, 30, 157-164. https://doi.org/10.3892/or.2013.2476
MLA
Ji, X., Chen, S., Zhu, L., Pan, H., Zhou, Y., Li, W., You, W., Gao, C., Zhu, J., Jiang, K., Wang, H."Knockdown of NF-E2-related factor 2 inhibits the proliferation and growth of U251MG human glioma cells in a mouse xenograft model". Oncology Reports 30.1 (2013): 157-164.
Chicago
Ji, X., Chen, S., Zhu, L., Pan, H., Zhou, Y., Li, W., You, W., Gao, C., Zhu, J., Jiang, K., Wang, H."Knockdown of NF-E2-related factor 2 inhibits the proliferation and growth of U251MG human glioma cells in a mouse xenograft model". Oncology Reports 30, no. 1 (2013): 157-164. https://doi.org/10.3892/or.2013.2476
Copy and paste a formatted citation
x
Spandidos Publications style
Ji X, Chen S, Zhu L, Pan H, Zhou Y, Li W, You W, Gao C, Zhu J, Jiang K, Jiang K, et al: Knockdown of NF-E2-related factor 2 inhibits the proliferation and growth of U251MG human glioma cells in a mouse xenograft model. Oncol Rep 30: 157-164, 2013.
APA
Ji, X., Chen, S., Zhu, L., Pan, H., Zhou, Y., Li, W. ... Wang, H. (2013). Knockdown of NF-E2-related factor 2 inhibits the proliferation and growth of U251MG human glioma cells in a mouse xenograft model. Oncology Reports, 30, 157-164. https://doi.org/10.3892/or.2013.2476
MLA
Ji, X., Chen, S., Zhu, L., Pan, H., Zhou, Y., Li, W., You, W., Gao, C., Zhu, J., Jiang, K., Wang, H."Knockdown of NF-E2-related factor 2 inhibits the proliferation and growth of U251MG human glioma cells in a mouse xenograft model". Oncology Reports 30.1 (2013): 157-164.
Chicago
Ji, X., Chen, S., Zhu, L., Pan, H., Zhou, Y., Li, W., You, W., Gao, C., Zhu, J., Jiang, K., Wang, H."Knockdown of NF-E2-related factor 2 inhibits the proliferation and growth of U251MG human glioma cells in a mouse xenograft model". Oncology Reports 30, no. 1 (2013): 157-164. https://doi.org/10.3892/or.2013.2476
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