Gene expression of growth signaling pathways is up-regulated in CD133-positive medulloblastoma cells

  • Authors:
    • Chunyu Gu
    • Naoki Yokota
    • Yun Gao
    • Junkoh Yamamoto
    • Tsutomu Tokuyama
    • Hiroki Namba
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  • Published online on: January 14, 2011     https://doi.org/10.3892/ol.2011.235
  • Pages: 357-361
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Abstract

Medulloblastoma (MB) is the most common malignant brain tumor in children. Cancer initiating cells (CICs) have been proposed to be involved in the development of brain tumors including MB. Prominin-1 antigen (CD133) is a candidate surface molecular marker for CICs. In the present study, CD133-positive cells were isolated from human Daoy MB cells and their gene expression was compared with that of control Daoy cells. DNA microarray analysis revealed that there were 398 up-regulated genes (>2-fold increase) and 318 down-regulated genes (<50% decrease) in the CD133-positive cell-enriched fractions. Up-regulated genes included neuregulin-1, cyclin D1, cyclin-dependent kinase 6, vascular endothelial growth factor, inhibin β A, promyelocytic leukemia gene, MYC, and hairy enhancer of split-1, which are components of growth signaling pathways. Molecular studies suggest that developmentally regulated signals important for stem cell maintenance are also involved in MB tumorigenesis. Moreover, these molecules can serve as novel targets for MB treatment.
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March-April 2011
Volume 2 Issue 2

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

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Spandidos Publications style
Gu C, Yokota N, Gao Y, Yamamoto J, Tokuyama T and Namba H: Gene expression of growth signaling pathways is up-regulated in CD133-positive medulloblastoma cells. Oncol Lett 2: 357-361, 2011
APA
Gu, C., Yokota, N., Gao, Y., Yamamoto, J., Tokuyama, T., & Namba, H. (2011). Gene expression of growth signaling pathways is up-regulated in CD133-positive medulloblastoma cells. Oncology Letters, 2, 357-361. https://doi.org/10.3892/ol.2011.235
MLA
Gu, C., Yokota, N., Gao, Y., Yamamoto, J., Tokuyama, T., Namba, H."Gene expression of growth signaling pathways is up-regulated in CD133-positive medulloblastoma cells". Oncology Letters 2.2 (2011): 357-361.
Chicago
Gu, C., Yokota, N., Gao, Y., Yamamoto, J., Tokuyama, T., Namba, H."Gene expression of growth signaling pathways is up-regulated in CD133-positive medulloblastoma cells". Oncology Letters 2, no. 2 (2011): 357-361. https://doi.org/10.3892/ol.2011.235