Open Access

Cancer stem cells and microglia in the processes of glioblastoma multiforme invasive growth

  • Authors:
    • Igor Bryukhovetskiy
    • Igor Manzhulo
    • Polina Mischenko
    • Elena Milkina
    • Inessa Dyuizen
    • Andrey Bryukhovetskiy
    • Yuri Khotimchenko
  • View Affiliations

  • Published online on: July 20, 2016     https://doi.org/10.3892/ol.2016.4886
  • Pages: 1721-1728
  • Copyright: © Bryukhovetskiy et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The development of antitumor medication based on autologous stem cells is one of the most advanced methods in glioblastoma multiforme (GBM) treatment. However, there are no objective criteria for evaluating the effectiveness of this medication on cancer stem cells (CSCs). One possible criterion could be a change in the number of microglial cells and their specific location in the tumor. The present study aimed to understand the interaction between microglial cells and CSCs in an experimental glioblastoma model. C6 glioma cells were used to create a glioblastoma model, as they have the immunophenotypic characteristics of CSCs. The glioma cells (0.2x106) were stereotactically implanted into the brains of 60 rats. On the 10th, 20th and 30th days after implantation, the animals were 15 of the animals were sacrificed, and the obtained materials were analyzed by morphological and immunohistochemical analysis. Implantation of glioma cells into the rat brains caused rapid development of tumors characterized by invasive growth, angiogenesis and a high rate of proliferation. The maximum concentration of microglia was observed in the tumor nodule between days 10 and 20; a high proliferation rate of cancer cells was also observed in this area. By day 30, necrosis advancement was observed and the maximum number of microglial cells was concentrated in the invasive area; the invasive area also exhibited positive staining for CSC marker antibodies. Microglial cells have a key role in the invasive growth processes of glioblastoma, as demonstrated by the location of CSCs in the areas of microglia maximum concentration. Therefore, the present study indicates that changes in microglia position and corresponding suppression of tumor growth may be objective criteria for evaluating the effectiveness of biomedical treatment against CSCs.
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September-2016
Volume 12 Issue 3

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Bryukhovetskiy I, Manzhulo I, Mischenko P, Milkina E, Dyuizen I, Bryukhovetskiy A and Khotimchenko Y: Cancer stem cells and microglia in the processes of glioblastoma multiforme invasive growth. Oncol Lett 12: 1721-1728, 2016.
APA
Bryukhovetskiy, I., Manzhulo, I., Mischenko, P., Milkina, E., Dyuizen, I., Bryukhovetskiy, A., & Khotimchenko, Y. (2016). Cancer stem cells and microglia in the processes of glioblastoma multiforme invasive growth. Oncology Letters, 12, 1721-1728. https://doi.org/10.3892/ol.2016.4886
MLA
Bryukhovetskiy, I., Manzhulo, I., Mischenko, P., Milkina, E., Dyuizen, I., Bryukhovetskiy, A., Khotimchenko, Y."Cancer stem cells and microglia in the processes of glioblastoma multiforme invasive growth". Oncology Letters 12.3 (2016): 1721-1728.
Chicago
Bryukhovetskiy, I., Manzhulo, I., Mischenko, P., Milkina, E., Dyuizen, I., Bryukhovetskiy, A., Khotimchenko, Y."Cancer stem cells and microglia in the processes of glioblastoma multiforme invasive growth". Oncology Letters 12, no. 3 (2016): 1721-1728. https://doi.org/10.3892/ol.2016.4886