Cited by 927Neurogenesis and neuroplasticity mechanismsMultiple Sclerosis Research StudiesNeuroinflammation and Neurodegeneration Mechanisms

The DOI matches its Crossref record; 43 of the 43 references it cites were found in a registry or an index.

NG2-expressing glial progenitor cells: an abundant and widespread population of cycling cells in the adult rat CNS

Dawson, M·2003·Molecular and Cellular Neuroscience

Abstract

Glial progenitor cells of the developing CNS committed to the oligodendrocyte lineage (OPCs) express the chondroitin sulfate proteoglycan, NG2. A proportion of OPCs fail to differentiate past the stage at which they express NG2 and the lipid antigen O4 and persist in the adult CNS in a phenotypically immature form. However, the physiological function of NG2(+) cells in the adult CNS is unknown. Using antibodies against NG2 we show that NG2 is expressed by a distinct cell population in the mature CNS with the homogeneous antigenic phenotype of oligodendrocyte progenitors. The morphology of NG2(+) OPCs varies from region to region, reflecting the different structural environments, but they appear to represent a homogeneous population within any one gray or white matter region. A study of nine CNS regions showed that NG2(+) OPCs are numerous throughout the CNS and numbers in the white matter are only 1.5 times that in the gray. Whereas the ratio of OPCs to myelinating oligodendrocytes in the spinal cord gray and white matter approximates 1:4, gray matter regions of the forebrain have a 1:1 ratio, a phenomenon that will have consequences for oligodendrocyte replacement following demyelination. BrdU incorporation experiments showed that NG2(+) cells are the major dividing cell population of the adult rat CNS. Since very little apoptosis was detected and BrdU became increasingly present in oligodendrocytes after a 10-day pulse chase, with a concomitant decrease in NG2(+) BrdU incorporating cells, we suggest that the size of the oligodendrocyte population may actually increase during adult life.

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Crossref · 10.1016/s1044-7431(03)00210-0

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Metadata

Authors
Dawson, M.
Affiliations
Charing Cross Hospital (GB)
Corresponding author
Dawson, M
Venue
Molecular and Cellular Neuroscience
Publisher
Elsevier BV
Published
2003-10
Volume
24
Issue
2
Pages
476-488
ISSN
1044-7431 (ISSN-L)
OpenAlex
W1985286185
Cited by
927
References
43
Citations by year
2026: 25 · 2025: 27 · 2024: 56 · 2023: 54 · 2022: 38 · 2021: 71 · 2020: 57 · 2019: 46 · 2018: 51 · 2017: 59 · 2016: 40 · 2015: 48 · 2014: 43 · 2013: 52 · 2012: 28
FWCI
5.53
Type
journal article
Language
en
Open access
closed
Locations
  • Molecular and Cellular Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Health Sciences › Medicine › Clinical Neurology › Multiple Sclerosis Research Studies
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
NG2, oligodendrocyte precursor cells, cell cycling, oligodendrocyte lineage, myelination, demyelination, white matter, gray matter, BrdU incorporation, apoptosis, O4, chondroitin sulfate proteoglycans
MeSH terms
Chondroitin Sulfate Proteoglycan 4, Animals, Antigens, Cell Cycle, Central Nervous System, Gene Expression Regulation, Male, Neuroglia, Proteoglycans, Stem Cells, Rats, Sprague-Dawley, Rats

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