Abstract
NG2 cells are a subtype of widely distributed glial cells representing around 5 % of the total number of cells in the mammalian central nervous system (CNS). NG2 cells are mostly known for their role as oligodendrocyte progenitor cells (OPCs) and have been shown to generate most if not all oligodendrocytes and myelin, both during development and after a demyelinating injury. It has also been proposed that NG2 cells could play additional roles in the brain, such as regulating axon growth and synapse formation or act as endogenous neural stem cells. The regenerative potential of NG2 cells is quite unique since they are not only able to regenerate themselves extensively through proliferation and migration in the adult brain but are also responsible for the remarkable ability of the adult central nervous system to fully regenerate myelin after a demyelinating injury. NG2 cells also exhibit some properties of neural stem cells and are able to generate neurons and astrocytes in vitro, although their neurogenic and gliogenic potential seem much more limited in vivo (6.3, the neurogenic and gliogenic potential of NG2 cells). Here, we review and discuss our current knowledge on the self-regenerative ability of NG2 cells, their role in oligodendrocyte regeneration, and their neurogenic and gliogenic potential.
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- ALS:
-
Amyotrophic lateral sclerosis
- AMPA:
-
2-Amino-3-(3-hydroxy-5-methyl-isoxazol-4-yl)propanoic acid
- Ara-C:
-
Arabinofuranosyl cytidine
- BAC:
-
Bacterial artificial chromosome
- BMP:
-
Bone morphogenetic protein
- BrdU:
-
5-Bromo-20-deoxyuridine
- CNP:
-
2′,3′-Cyclic-nucleotide 3′-phosphodiesterase
- CNS:
-
Central nervous system
- ERK:
-
Extracellular signal-regulated kinase
- FCS:
-
Fetal calf serum
- FGF:
-
Fibroblast growth factor
- FGFR:
-
Fibroblast growth factor receptor
- GABA:
-
Gamma-aminobutyric acid
- GalC:
-
Galactosylceramidase
- HDAC:
-
Histone deacetylase
- hIPSC:
-
Human induced pluripotent stem cells
- MAG:
-
Myelin-associated glycoprotein
- MBP:
-
Myelin basic protein
- MOG:
-
Myelin oligodendrocyte glycoprotein
- MS:
-
Multiple sclerosis
- NG2:
-
Nerve/glial antigen-2
- OPC:
-
Oligodendrocyte progenitor cell
- PDGF:
-
Platelet-derived growth factor
- PDGFR:
-
Platelet-derived growth factor receptor
- PEDF:
-
Pigment epithelium-derived factor
- PI3K:
-
Phosphatidylinositol-4,5-bisphosphate 3-kinase
- PLP:
-
Myelin proteolipid protein
- pMN:
-
Progenitor of motor neurons
- Shh:
-
Sonic hedgehog
- SVZ:
-
Subventricular zone
- VZ:
-
Ventricular zone
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Mangin, JM. (2014). Regenerative Potential of NG2 Cells. In: Junier, MP., Kernie, S. (eds) Endogenous Stem Cell-Based Brain Remodeling in Mammals. Stem Cell Biology and Regenerative Medicine. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-7399-3_7
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