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MicroRNA-320a suppresses in GBM patients and modulates glioma cell functions by targeting IGF-1R

Tumor Biology volume 35, pages 11269–11275 (2014)Cite this article

Abstract

Glioblastoma (GBM) is the most aggressive and malignant glioma. Currently, a few modern surgical and medical therapeutic strategies are applied for GBM, but the prognosis of GBM patients remains poor, and the average median survival time is only 14.6 months. In this study, we for the first time found that the levels of miR-320a were decreased in both GBM patients and glioma cells. In GBM patients, elevated miR-320a expression was associated with better prognosis. In addition, insulin-like growth factor-1 receptor (IGF-1R) was identified as a key direct target of miR-320a. Overexpression of miR-320a led to the inhibition of cell proliferation, migration, invasion, as well as tumorigenesis by targeting IGF-1R, and thus regulated the signaling pathways downstream, including PI3K/AKT and MAPK/ERK. In tumor orthotopic xenograft experiment, the tumor growth was depressed and survival time of mice model was prolonged when miR-320a was overexpressed. Therefore, our results suggested that miR-320a could suppress tumor development and growth by targeting IGF-1R, and miR-320a might serve as a new effective target for anti-cancer therapy strategies.

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Acknowledgments

This research was supported by grants from the National High Technology Research and Development Program (No. 2012AA02A508), the International Science and Technology Cooperation Program (No. 2012DFA30470), the National 973 Program (No. 2011CB707804), and the National Natural Science Foundation of China (No. 91229121, 81201993, 81071626).

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None.

Author information

Affiliations

  1. Department of Immunology, School of Basic Medical Sciences, Capital Medical University, No. 10, Xitoutiao, YouAnMen, Fengtai District, Beijing, 100069, People’s Republic of China

    Tianzhu Guo, Ying Feng, Qingyang Liu, Xue Yang, Yan Chen & Quangeng Zhang

  2. Beijing Neurosurgical Institute, Beijing, 100050, China

    Tao Jiang

  3. Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, People’s Republic of China

    Tao Jiang

Authors
  1. Tianzhu Guo
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  2. Ying Feng
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  3. Qingyang Liu
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  4. Xue Yang
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  5. Tao Jiang
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  6. Yan Chen
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  7. Quangeng Zhang
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Correspondence to Tao Jiang, Yan Chen or Quangeng Zhang.

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Guo, T., Feng, Y., Liu, Q. et al. MicroRNA-320a suppresses in GBM patients and modulates glioma cell functions by targeting IGF-1R. Tumor Biol. 35, 11269–11275 (2014). https://doi.org/10.1007/s13277-014-2283-4

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  • DOI: https://doi.org/10.1007/s13277-014-2283-4

Keywords

  • Glioma
  • MiR-320a
  • IGF-1R
  • Carcinogenesis