Vestibular Nuclei: A New Neural Stem Cell Niche?
Guillaume Rastoldo1, Isabelle Watabe1, Agnes Lapotre1
1Aix Marseille Université-CNRS, Laboratoire de Neurosciences Cognitives, LNC UMR 7291, 13331 Marseille, France.
Cells
|November 26, 2022
Summary
Adult neural stem cells (NSCs) reside in the vestibular nuclei, generating new neurons and glia. These findings reveal the vestibular nuclei as a novel site for adult neurogenesis in rodents.
Area of Science:
- Neuroscience
- Stem Cell Biology
- Neurogenesis
Background:
- Adult neurogenesis occurs in specific brain regions.
- The vestibular nuclei's neurogenic potential was previously unexplored.
- Unilateral vestibular neurectomy (UVN) induces reactive gliosis and SOX2/GFAP+ cells in vestibular nuclei.
Purpose of the Study:
- To investigate the neurogenic niche status of adult rodent vestibular nuclei under physiological conditions.
- To identify quiescent and activated neural stem cells (NSCs) within the vestibular nuclei.
- To determine if these cells generate new neurons and/or glia.
Main Methods:
- Utilized markers for stem cells (Nestin, SOX2, GFAP), proliferation (BrdU), and neuronal differentiation (NeuN).
- Examined vestibular nuclei in control adult rats.
- Assessed cell populations and their differentiation potential.
Main Results:
- Confirmed the presence of quiescent and activated adult neural stem cells (NSCs) in the vestibular nuclei.
- Demonstrated that these NSCs generate new neurons.
- Showed that vestibular nuclei can generate both neurons and glia.
Conclusions:
- The vestibular nuclei represent a novel site for adult neurogenesis in rodents.
- These findings highlight the vestibular nuclei as a potential source of new neurons and glia.
- The vestibular nuclei harbor a functional neurogenic niche under physiological conditions.
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