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Proteoglycans of the Neural Stem Cell Niche

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Proteoglycans in Stem Cells

Part of the book series: Biology of Extracellular Matrix ((BEM,volume 9))

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Abstract

Neural stem cells (NSCs) of the central nervous system (CNS) follow a precisely timed sequence of neurogenesis and gliogenesis, before they generally vanish after birth. In the adult CNS residual NSCs can be detected in two neurogenic regions, the subependymal zone (SEZ) of the lateral ventricle and the subgranular zone (SGZ) in the dentate gyrus of the hippocampus. These regions present favorable environments for stem cells and are considered privileged niches for their persistence and differentiation. Niches comprise the stem cells, their progeny, specialized niche cells, and a specialized extracellular matrix (ECM) environment. Morphogens, cytokines, hormones, and glycoproteins contribute to a rich microenvironment that guides self-renewal and/or differentiation of stem cells. It has become evident that a subclass of ECM constituents is of particular importance for the structure and function of the stem cell niche, the proteoglycans (PGs). PGs can embody a considerable structural variability and intervene in many important cellular functions such as cell proliferation, migration, and differentiation. A better understanding of niche PGs and their regulatory roles will be valuable for the design of artificial growth support of stem cells. This chapter discusses recent insights into the composition and functions of PGs in the microenvironment of NSCs.

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Abbreviations

ChABC:

Chondroitinase ABC

CNS:

Central nervous system

CS:

Chondroitin sulfate

CSC:

Cancer stem cell

CSPG:

Chondroitin sulfate proteoglycan

DS:

Dermatan sulfate

GAG:

Glycosaminoglycan

GBM:

Glioblastoma multiforme

GPC:

Glypican

HS:

Heparan sulfate

HSPG:

Heparan sulfate proteoglycan

KS:

Keratan sulfate

Mab:

Monoclonal antibody

NSC:

Neural stem cell

OPC:

Oligodendrocyte precursor cell

oSVZ:

Outer subventricular zone

PG:

Proteoglycan

PNN:

Perineuronal net

RG:

Radial glia

RPTP:

Receptor protein tyrosine phosphatase

SDC:

Syndecan

SEZ:

Subependymal zone

SVZ:

Subventricular zone

TMZ:

Temozolomide

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Acknowledgments

We acknowledge past and present grant support by the Stem Cell Network North Rhine-Westphalia, the German Research Foundation (DFG: GSC 98/1; SPP-1757, Fa 159/20-1, Fa 159/20-2; Fa 159/23-1, Fa 159/24-1), the Mercur-Foundation (Mercator Research Center Ruhr: Pr 2011-0010), the German Ministry of Education, Research and Technology (BMBF 01GN0503), and the Ruhr University Bochum (President’s special programme call 2008).

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Correspondence to Andreas Faissner .

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Roll, L., Faissner, A. (2021). Proteoglycans of the Neural Stem Cell Niche. In: Götte, M., Forsberg-Nilsson, K. (eds) Proteoglycans in Stem Cells. Biology of Extracellular Matrix, vol 9. Springer, Cham. https://doi.org/10.1007/978-3-030-73453-4_8

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