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MiR-137 inhibits proliferation and angiogenesis of human glioblastoma cells by targeting EZH2

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Abstract

It is suggested that microRNAs play important roles in the development of various cancers. Here, we showed that miR-137 is downregulated in glioblastoma (GBM) cell lines and that low levels of miR-137 are associated with a poor prognostic phenotype of GBM patients. Ectopic expression of miR-137 significantly inhibited GBM cell proliferation and angiogenesis. In addition, ectopic expression of miR-137 inhibited tumor growth and angiogenesis in a SCID mouse xenograft model. EZH2 was identified as a direct target of miR-137 by using luciferase reporter and Western blot assays, and EZH2 overexpression can rescue the inhibitory effect of miR-137 on cell proliferation and angiogenesis. Furthermore, tumor samples from GBM patients showed an inverse relationship between miR-137 and EZH2 levels. Our results suggest that miR-137 may serve as a biomarker in GBM, and the modulation of its activity may represent a novel therapeutic strategy for the treatment of GBM patients.

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    Authors and Affiliations

    1. Medical Intensive Care Unit of Guangzhou General Hospital of Guangzhou Military Command; Guangdong Provincial Key Laboratory of Geriatric Infection and Organ Function Support & Guangzhou Key Laboratory of Geriatric Infection and Organ Function Support, Guangzhou, People’s Republic of China

      Jie Sun & Zhenhui Guo

    2. Hospital of Orthopedics, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou, People’s Republic of China

      Guodong Zheng

    3. Department of intensive care unit, The Third Affiliated Hospital of Southern Medical University, Guangzhou, People’s Republic of China

      Zhengtao Gu

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    1. Jie Sun
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    2. Guodong Zheng
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    3. Zhengtao Gu
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    4. Zhenhui Guo
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    Correspondence to Zhengtao Gu or Zhenhui Guo.

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    Jie Sun and Guodong Zheng have contributed equally to this study.

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    Sun, J., Zheng, G., Gu, Z. et al. MiR-137 inhibits proliferation and angiogenesis of human glioblastoma cells by targeting EZH2. J Neurooncol 122, 481–489 (2015). https://doi.org/10.1007/s11060-015-1753-x

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    • DOI: https://doi.org/10.1007/s11060-015-1753-x

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