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Article

Implantation of GL261 neurospheres into C57/BL6 mice: A more reliable syngeneic graft model for research on glioma-initiating cells

  • Authors:
    • Liang Yi
    • Chun Zhou
    • Bing Wang
    • Tunan Chen
    • Minhui Xu
    • Lunshan Xu
    • Hua Feng
  • View Affiliations / Copyright

    Affiliations: Department of Neurosurgery, Daping Hospital, Third Military Medical University, Chongqing, P.R. China, Department of Neurosurgery, Yongchuan District People's Hospital, Chongqing, P.R. China, Department of Neurosurgery, Southwest Hospital, Third Military Medical University, Chongqing, P.R. China
  • Pages: 477-484
    |
    Published online on: May 27, 2013
       https://doi.org/10.3892/ijo.2013.1962
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Abstract

Recent studies have demonstrated that inflammatory cells and inflammatory mediators are indispensable components of the tumor-initiating cell (TIC) niche and regulate the malignant behavior of TICs. However, conventional animal models for glioma-initiating cell (GIC) studies are based on the implantation of GICs from human glioblastoma (GBM) into immunodeficient mice without the regulation of immune system. Whether animal models can mimic the cellular microenvironment of malignancy and evaluate the biological features of GICs accurately is unclear. Here, we detected the biological features of neurosphere-like tumor cells derived from the murine GBM cell line GL261 (GL261-NS) and from primary human GBM (PGBM-NS) in vitro, injected GL261-NS into syngeneic C57/BL6 mouse brain and injected PGBM-NS into NOD/SCID mouse brain, respectively. The tumorigenic characteristics of the two different orthotopic transplantation models were analyzed and the histological discrepancy between grafts and human primary GBM was compared. We found that GICs enriched in GL261-NS, GL261-NS and PGBM-NS exhibited increased GIC potential and enhanced chemoresistance in vitro. GL261-NS was significantly more aggressive compared to GL261 adhesive cells (GL261-AC) in vivo and the enhanced aggression was more significant in syngeneic mice compared to immunodeficient mice. The discrepancy of tumorigenicity between GL261-NS and GL261-AC in C57/BL6 mice was also larger compared to that between PGBM-NS and PGBM-AC in immunodeficient mice. Syngrafts derived from GL261-NS in C57/BL6 mice corresponded to the human GBM histologically better, compared with xenografts derived from PGBM-NS in NOD/SCID mice, which lack inflammatory cells and inflammatory mediators. We conclude that the inflammatory niche is involved in the tumorigenicity of GICs and implantation of GL261-NS into C57/BL6 mice is a more reliable syngeneic graft model for in vivo study on GICs relative to the immunodeficiency model.
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Copy and paste a formatted citation
Spandidos Publications style
Yi L, Zhou C, Wang B, Chen T, Xu M, Xu L and Feng H: Implantation of GL261 neurospheres into C57/BL6 mice: A more reliable syngeneic graft model for research on glioma-initiating cells. Int J Oncol 43: 477-484, 2013.
APA
Yi, L., Zhou, C., Wang, B., Chen, T., Xu, M., Xu, L., & Feng, H. (2013). Implantation of GL261 neurospheres into C57/BL6 mice: A more reliable syngeneic graft model for research on glioma-initiating cells. International Journal of Oncology, 43, 477-484. https://doi.org/10.3892/ijo.2013.1962
MLA
Yi, L., Zhou, C., Wang, B., Chen, T., Xu, M., Xu, L., Feng, H."Implantation of GL261 neurospheres into C57/BL6 mice: A more reliable syngeneic graft model for research on glioma-initiating cells". International Journal of Oncology 43.2 (2013): 477-484.
Chicago
Yi, L., Zhou, C., Wang, B., Chen, T., Xu, M., Xu, L., Feng, H."Implantation of GL261 neurospheres into C57/BL6 mice: A more reliable syngeneic graft model for research on glioma-initiating cells". International Journal of Oncology 43, no. 2 (2013): 477-484. https://doi.org/10.3892/ijo.2013.1962
Copy and paste a formatted citation
x
Spandidos Publications style
Yi L, Zhou C, Wang B, Chen T, Xu M, Xu L and Feng H: Implantation of GL261 neurospheres into C57/BL6 mice: A more reliable syngeneic graft model for research on glioma-initiating cells. Int J Oncol 43: 477-484, 2013.
APA
Yi, L., Zhou, C., Wang, B., Chen, T., Xu, M., Xu, L., & Feng, H. (2013). Implantation of GL261 neurospheres into C57/BL6 mice: A more reliable syngeneic graft model for research on glioma-initiating cells. International Journal of Oncology, 43, 477-484. https://doi.org/10.3892/ijo.2013.1962
MLA
Yi, L., Zhou, C., Wang, B., Chen, T., Xu, M., Xu, L., Feng, H."Implantation of GL261 neurospheres into C57/BL6 mice: A more reliable syngeneic graft model for research on glioma-initiating cells". International Journal of Oncology 43.2 (2013): 477-484.
Chicago
Yi, L., Zhou, C., Wang, B., Chen, T., Xu, M., Xu, L., Feng, H."Implantation of GL261 neurospheres into C57/BL6 mice: A more reliable syngeneic graft model for research on glioma-initiating cells". International Journal of Oncology 43, no. 2 (2013): 477-484. https://doi.org/10.3892/ijo.2013.1962
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