Abstract
In this chapter, we summarized the current understanding of stem cell biology in brain tumors, as well as emerging concepts. We have approached the issue from two perspectives: the cell of origin of brain tumors and cancer stem cells in brain tumors (BTSCs). Throughout the chapter, we discussed the possibility of neurogenic niches in normal brain as the putative origin of brain tumors and we highlighted molecular signatures and signaling pathways implicated in BTSC biology. Due to their intrinsic resistance to chemoradiotherapy and their highly tumorigenic nature, BTSCs represent attractive therapeutic targets. However, lack of universal molecular markers identifying BTSCs and complex interplay between signaling pathways regulating BTSC biology have thus far impaired the successful clinical implementation of directed therapeutics toward these cells. Furthermore, the overlap between molecular signatures in BTSCs and normal adult stem cells complicates the issue further due to putative toxicity. We believe that a better understanding of cellular heterogeneity and hierarchy in these tumors will be crucial to overcoming these issues and designing effective therapies against brain tumors and other malignancies.
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Bayin, N.S., Modrek, A.S., Placantonakis, D.G. (2015). Brain Tumor Stem Cells. In: Karajannis, M., Zagzag, D. (eds) Molecular Pathology of Nervous System Tumors. Molecular Pathology Library, vol 8. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-1830-0_2
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