Cited by 647Retinal Development and DisordersNeurogenesis and neuroplasticity mechanismsDevelopmental Biology and Gene Regulation

Late-stage neuronal progenitors in the retina are radial Müller glia that function as retinal stem cells

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Bernardos, R. L., Barthel, L. K., Meyers, J. R., Raymond, P. A.·2007·Journal of Neuroscience

Abstract

Neuronal progenitors in the mammalian brain derive from radial glia or specialized astrocytes. In developing neural retina, radial glia-like Müller cells are generated late in neurogenesis and are not considered to be neuronal progenitors, but they do proliferate after injury and can express neuronal markers, suggesting a latent neurogenic capacity. To examine the neurogenic capacity of retinal glial cells, we used lineage tracing in transgenic zebrafish with a glial-specific promoter (gfap, for glial fibrillary acid protein) driving green fluorescent protein in differentiated Müller glia. We found that all Müller glia in the zebrafish retina express low levels of the multipotent progenitor marker Pax6 (paired box gene 6), and they proliferate at a low frequency in the intact, uninjured retina. Müller glia-derived progenitors express Crx (cone rod homeobox) and are late retinal progenitors that generate the rod photoreceptor lineage in the postembryonic retina. These Müller glia-derived progenitors also remain competent to produce earlier neuronal lineages, in that they respond to loss of cone photoreceptors by specifically regenerating the missing neurons. We conclude that zebrafish Müller glia function as multipotent retinal stem cells that generate retinal neurons by homeostatic and regenerative developmental mechanisms.

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Crossref · 10.1523/jneurosci.1624-07.2007

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Authors
Bernardos, R. L., Barthel, L. K., Meyers, J. R., & Raymond, P. A.
Affiliations
University of Michigan (US)
Venue
Journal of Neuroscience
Published
2007-06-27
Volume
27
Issue
26
Pages
7028-7040
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2016508121
Cited by
647
References
60
Citations by year
2026: 28 · 2025: 22 · 2024: 32 · 2023: 40 · 2022: 39 · 2021: 38 · 2020: 38 · 2019: 33 · 2018: 31 · 2017: 27 · 2016: 36 · 2015: 32 · 2014: 33 · 2013: 45 · 2012: 33
FWCI
13.23
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Eye Institute (R01EY004318, F32EY017251)
  • National Institute of Neurological Disorders and Stroke (F31NS047909)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
Müller cells, retinal stem cells, neuronal precursors, retinal neurogenesis, zebrafish retina, Pax6, CRX, rod photoreceptors, photoreceptor regeneration, glial fibrillary acidic protein, lineage tracing, retinal homeostasis, multipotent progenitors
MeSH terms
Aging, Animals, Cell Differentiation, Homeostasis, Neuroglia, Neurons, Regeneration, Retina, Species Specificity, Stem Cells, Zebrafish, Cell Lineage

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