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Article

A role for LRIG1 in the regulation of malignant glioma aggressiveness

  • Authors:
    • Feng Mao
    • Baofeng Wang
    • Qungen Xiao
    • Guifa Xi
    • Wei Sun
    • Huaqiu Zhang
    • Fei Ye
    • Feng Wan
    • Dongsheng Guo
    • Ting Lei
    • Xiaoping Chen
  • View Affiliations / Copyright

    Affiliations: Department of Neurosurgery and Sino-German Neuro-Oncology Molecular Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China, Department of General Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
  • Pages: 1081-1087
    |
    Published online on: January 16, 2013
       https://doi.org/10.3892/ijo.2013.1776
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Abstract

The molecular mechanisms that drive the develop­ment and aggressive progression of malignant astrocytic tumors remain obscure. Recently, in the search for endo­genous negative regulators of EGF receptor, LRIG1 was cloned and characterized as a putative tumor suppressor gene often downregulated in various human tumors, including astrocytic tumors. Although several studies have implicated the function of LRIG1 in the inhibition of tumorigenesis, its precise role and potential underlying mechanisms remain obscure. Therefore, we generated a full-length expression vector to overexpress LRIG1 in the U251 malignant glioma cell line. Introduction of exogenous LRIG1 into glioma cells inhibited cell proliferation manifested by MTT and soft agar clone assay in vitro and subcutaneously tumor xenografts. On the other hand, LRIG1 overexpression inhibited glioma growth by significantly changing the expression pattern of cyclins, resulting in delayed cell cycle. Employing transwell invasion and wound scratch assay and gelatin zymography, LRIG1 inhibited U-251 MG cell invasion and migration by attenuating MMP2 and MMP9 production. Under ligand-stimulated conditions, p-ERK levels did not change, whereas p-AKT levels were inhibited in cells with LRIG1 upregulation, indicating that LRIG1 exerts more inhibiting effects on the PI3K/AKT pathway. Our findings suggest that LRIG1 restricted glioma aggressiveness by inhibiting cell proliferation, migration and invasion. Restoration of LRIG1 to glioma cells could offer a novel therapeutic strategy.
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Copy and paste a formatted citation
Spandidos Publications style
Mao F, Wang B, Xiao Q, Xi G, Sun W, Zhang H, Ye F, Wan F, Guo D, Lei T, Lei T, et al: A role for LRIG1 in the regulation of malignant glioma aggressiveness. Int J Oncol 42: 1081-1087, 2013.
APA
Mao, F., Wang, B., Xiao, Q., Xi, G., Sun, W., Zhang, H. ... Chen, X. (2013). A role for LRIG1 in the regulation of malignant glioma aggressiveness. International Journal of Oncology, 42, 1081-1087. https://doi.org/10.3892/ijo.2013.1776
MLA
Mao, F., Wang, B., Xiao, Q., Xi, G., Sun, W., Zhang, H., Ye, F., Wan, F., Guo, D., Lei, T., Chen, X."A role for LRIG1 in the regulation of malignant glioma aggressiveness". International Journal of Oncology 42.3 (2013): 1081-1087.
Chicago
Mao, F., Wang, B., Xiao, Q., Xi, G., Sun, W., Zhang, H., Ye, F., Wan, F., Guo, D., Lei, T., Chen, X."A role for LRIG1 in the regulation of malignant glioma aggressiveness". International Journal of Oncology 42, no. 3 (2013): 1081-1087. https://doi.org/10.3892/ijo.2013.1776
Copy and paste a formatted citation
x
Spandidos Publications style
Mao F, Wang B, Xiao Q, Xi G, Sun W, Zhang H, Ye F, Wan F, Guo D, Lei T, Lei T, et al: A role for LRIG1 in the regulation of malignant glioma aggressiveness. Int J Oncol 42: 1081-1087, 2013.
APA
Mao, F., Wang, B., Xiao, Q., Xi, G., Sun, W., Zhang, H. ... Chen, X. (2013). A role for LRIG1 in the regulation of malignant glioma aggressiveness. International Journal of Oncology, 42, 1081-1087. https://doi.org/10.3892/ijo.2013.1776
MLA
Mao, F., Wang, B., Xiao, Q., Xi, G., Sun, W., Zhang, H., Ye, F., Wan, F., Guo, D., Lei, T., Chen, X."A role for LRIG1 in the regulation of malignant glioma aggressiveness". International Journal of Oncology 42.3 (2013): 1081-1087.
Chicago
Mao, F., Wang, B., Xiao, Q., Xi, G., Sun, W., Zhang, H., Ye, F., Wan, F., Guo, D., Lei, T., Chen, X."A role for LRIG1 in the regulation of malignant glioma aggressiveness". International Journal of Oncology 42, no. 3 (2013): 1081-1087. https://doi.org/10.3892/ijo.2013.1776
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