Cited by 188Neurogenesis and neuroplasticity mechanismsNeuroinflammation and Neurodegeneration MechanismsCongenital heart defects research

Circumventricular organs: A novel site of neural stem cells in the adult brain

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Bennett, Lori, Yang, Ming, Enikolopov, Grigori, Iacovitti, Lorraine·2009·Molecular and Cellular Neuroscience

Abstract

Neurogenesis in the adult mammalian nervous system is now well established in the subventricular zone of the anterolateral ventricle and subgranular zone of the hippocampus. In these regions, neurons are thought to arise from neural stem cells, identified by their expression of specific intermediate filament proteins (nestin, vimentin, GFAP) and transcription factors (Sox2). In the present study, we show that in adult rat and mouse, the circumventricular organs (CVOs) are rich in nestin+, GFAP+, vimentin+ cells which express Sox2 and the cell cycle-regulating protein Ki67. In culture, these cells proliferate as neurospheres and express neuronal (doublecortin+, beta-tubulin III+) and glial (S100beta+, GFAP+, RIP+) phenotypic traits. Further, our in vivo studies using bromodeoxyuridine show that CVO cells proliferate and undergo constitutive neurogenesis and gliogenesis. These findings suggest that CVOs may constitute a heretofore unknown source of stem/progenitor cells, capable of giving rise to new neurons and/or glia in the adult brain.

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Crossref · 10.1016/j.mcn.2009.04.007

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Authors
Bennett, L., Yang, M., Enikolopov, G., & Iacovitti, L.
Affiliations
  • Thomas Jefferson University (US)
  • Cold Spring Harbor Laboratory (US)
Corresponding author
Iacovitti, Lorraine
Venue
Molecular and Cellular Neuroscience
Publisher
Elsevier BV
Published
2009-06
Volume
41
Issue
3
Pages
337-347
ISSN
1044-7431 (ISSN-L)
OpenAlex
W2006340543
Cited by
186
References
56
Citations by year
2026: 1 · 2025: 8 · 2024: 15 · 2023: 12 · 2022: 10 · 2021: 15 · 2020: 15 · 2019: 8 · 2018: 10 · 2017: 15 · 2016: 9 · 2015: 16 · 2014: 13 · 2013: 12 · 2012: 9
FWCI
2.82
Type
journal article
Language
en
Open access
Locations
  • Molecular and Cellular Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Cold Spring Harbor Laboratory Institutional Repository (Cold Spring Harbor Laboratory) (acceptedVersion)
Funders
National Institute of Neurological Disorders and Stroke (R01NS043309, NS32519, R01NS032519, NS43309)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Congenital heart defects research
Keywords
circumventricular organs, adult neurogenesis, neural stem cells, stem/progenitor cells, nestin, glial fibrillary acidic protein, vimentin, SOX2, Ki-67, neurospheres, gliogenesis, subventricular zone, subgranular zone, intermediate filament proteins
MeSH terms
Doublecortin Protein, Animals, Cell Differentiation, Female, Glial Fibrillary Acidic Protein, Intermediate Filament Proteins, Male, Nerve Tissue Proteins, Neurons, Vimentin, Biomarkers, Cell Culture Techniques, Ki-67 Antigen, Third Ventricle, Fourth Ventricle, Cell Proliferation, Mice, Rats, Adult Stem Cells, Neurogenesis, SOXB1 Transcription Factors, Nestin

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