Cited by 135Neurogenesis and neuroplasticity mechanismsDevelopmental Biology and Gene RegulationCell Adhesion Molecules Research

Regulation of Radial Glial Survival by Signals from the Meninges

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Radakovits, R., Barros, C. S., Belvindrah, R., Patton, B., Muller, U.·2009·Journal of Neuroscience

Abstract

Radial glial cells (RGCs) in the developing cerebral cortex are progenitors for neurons and glia, and their processes serve as guideposts for migrating neurons. So far, it has remained unclear whether RGC processes also control the function of RGCs more directly. Here, we show that RGC numbers and cortical size are reduced in mice lacking beta1 integrins in RGCs. TUNEL stainings and time-lapse video recordings demonstrate that beta1-deficient RGCs processes detach from the meningeal basement membrane (BM) followed by apoptotic death of RGCs. Apoptosis is also induced by surgical removal of the meninges. Finally, mice lacking the BM components laminin alpha2 and alpha4 show defects in the attachment of RGC processes at the meninges, a reduction in cortical size, and enhanced apoptosis of RGC cells. Our findings demonstrate that attachment of RGC processes at the meninges is important for RGC survival and the control of cortical size.

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Crossref · 10.1523/jneurosci.5537-08.2009

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Authors
Radakovits, R., Barros, C. S., Belvindrah, R., Patton, B., & Muller, U.
Affiliations
  • Scripps Research Institute (US)
  • Oregon Health & Science University (US)
Venue
Journal of Neuroscience
Published
2009-06-17
Volume
29
Issue
24
Pages
7694-7705
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1977060481
Cited by
135
References
54
Citations by year
2026: 2 · 2025: 6 · 2024: 5 · 2023: 6 · 2022: 5 · 2021: 5 · 2020: 15 · 2019: 6 · 2018: 9 · 2017: 8 · 2016: 8 · 2015: 8 · 2014: 16 · 2013: 9 · 2012: 8
FWCI
2.82
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • PEARL (University of Plymouth) (submittedVersion)
Funders
  • Christopher and Dana Reeve Foundation
  • California Institute of Regenerative Medicine
  • National Institutes of Health
  • National Institute of Mental Health (MH078833, U01MH078833)
  • National Institute of Neurological Disorders and Stroke (NS046456, R01NS046456)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
Keywords
radial glia, beta1 integrin, apoptosis, laminin alpha 2, laminin α4, cortical development, neuronal migration, glial progenitors
MeSH terms
PAX6 Transcription Factor, Animals, Animals, Newborn, Bromodeoxyuridine, Cell Differentiation, Cell Survival, Cerebral Cortex, Embryo, Mammalian, Eye Proteins, Intermediate Filament Proteins, Laminin, Meninges, Mice, Transgenic, Nerve Tissue Proteins, Neuroglia, Repressor Proteins, Stem Cells, Signal Transduction, Electroporation, Homeodomain Proteins, Gene Expression Regulation, Developmental, Integrin beta1, Integrases, In Situ Nick-End Labeling, Cell Proliferation, Green Fluorescent Proteins, Mice, Paired Box Transcription Factors, Neurogenesis, Nestin, In Vitro Techniques

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