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International Journal of Oncology
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International Journal of Molecular Medicine is an international journal devoted to molecular mechanisms of human disease.

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Article

MicroRNA miR-451 downregulates the PI3K/AKT pathway through CAB39 in human glioma

  • Authors:
    • Yuan Tian
    • Yang Nan
    • Lei Han
    • Anling Zhang
    • Guangxiu Wang
    • Zhifan Jia
    • Jianwei Hao
    • Peiyu Pu
    • Yue Zhong
    • Chunsheng Kang
  • View Affiliations / Copyright

    Affiliations: Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China, Department of Neurosurgery, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin 300052, P.R. China, Laboratory of Neuro-Oncology, Tianjin Neurological Institute, 154 Anshan Road, Heping District, Tianjin 300052, P.R. China
  • Pages: 1105-1112
    |
    Published online on: December 15, 2011
       https://doi.org/10.3892/ijo.2011.1306
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Abstract

The microRNA miR-451 is downregulated in gliomas, this has been suggested by several different research groups and is consistent with our data. Our previous study also confirmed that miR-451 has a repressive role in glioma by inhibiting cell growth, proliferation and by inducing cell apoptosis. In the present study, we identified a target gene of miR-451 in human glioma and investigated the mechanism for the glioma suppressive effect of miR-451 functions. Expression of miR-451 in gliomas was identified by quantitative real-time PCR and fluorescence in situ hybridization. Human glioma cell lines (U251, U87, LN229 and A172) were transfected with miR-451 mimics to restore miR-451 expression. The tumor suppressive effects of miR-451 were further verified by subcutaneous assays in nude mice, in addition to our previous in vitro data. A candidate target gene was tested by Western blotting and luciferase reporter assays. Some PI3K/AKT pathway factors were tested by Western blotting. We found that miR-451 expression was downregulated in glioma samples and was inversely correlated with WHO grades of gliomas. In vivo assays confirmed that miR-451 had tumor suppressive traits. CAB39-3'UTR lucife-rase reporter assay confirmed CAB39 as a direct target gene of miR-451. Significant alterations in the expression of PI3K/AKT pathway factors were observed by Western blot assays. We conclude that miR-451 represses glioma in vitro and in vivo, likely through targeting CAB39 directly and inhibiting the PI3K/AKT pathway indirectly.
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Copy and paste a formatted citation
Spandidos Publications style
Tian Y, Nan Y, Han L, Zhang A, Wang G, Jia Z, Hao J, Pu P, Zhong Y, Kang C, Kang C, et al: MicroRNA miR-451 downregulates the PI3K/AKT pathway through CAB39 in human glioma. Int J Oncol 40: 1105-1112, 2012.
APA
Tian, Y., Nan, Y., Han, L., Zhang, A., Wang, G., Jia, Z. ... Kang, C. (2012). MicroRNA miR-451 downregulates the PI3K/AKT pathway through CAB39 in human glioma. International Journal of Oncology, 40, 1105-1112. https://doi.org/10.3892/ijo.2011.1306
MLA
Tian, Y., Nan, Y., Han, L., Zhang, A., Wang, G., Jia, Z., Hao, J., Pu, P., Zhong, Y., Kang, C."MicroRNA miR-451 downregulates the PI3K/AKT pathway through CAB39 in human glioma". International Journal of Oncology 40.4 (2012): 1105-1112.
Chicago
Tian, Y., Nan, Y., Han, L., Zhang, A., Wang, G., Jia, Z., Hao, J., Pu, P., Zhong, Y., Kang, C."MicroRNA miR-451 downregulates the PI3K/AKT pathway through CAB39 in human glioma". International Journal of Oncology 40, no. 4 (2012): 1105-1112. https://doi.org/10.3892/ijo.2011.1306
Copy and paste a formatted citation
x
Spandidos Publications style
Tian Y, Nan Y, Han L, Zhang A, Wang G, Jia Z, Hao J, Pu P, Zhong Y, Kang C, Kang C, et al: MicroRNA miR-451 downregulates the PI3K/AKT pathway through CAB39 in human glioma. Int J Oncol 40: 1105-1112, 2012.
APA
Tian, Y., Nan, Y., Han, L., Zhang, A., Wang, G., Jia, Z. ... Kang, C. (2012). MicroRNA miR-451 downregulates the PI3K/AKT pathway through CAB39 in human glioma. International Journal of Oncology, 40, 1105-1112. https://doi.org/10.3892/ijo.2011.1306
MLA
Tian, Y., Nan, Y., Han, L., Zhang, A., Wang, G., Jia, Z., Hao, J., Pu, P., Zhong, Y., Kang, C."MicroRNA miR-451 downregulates the PI3K/AKT pathway through CAB39 in human glioma". International Journal of Oncology 40.4 (2012): 1105-1112.
Chicago
Tian, Y., Nan, Y., Han, L., Zhang, A., Wang, G., Jia, Z., Hao, J., Pu, P., Zhong, Y., Kang, C."MicroRNA miR-451 downregulates the PI3K/AKT pathway through CAB39 in human glioma". International Journal of Oncology 40, no. 4 (2012): 1105-1112. https://doi.org/10.3892/ijo.2011.1306
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