Intrinsic Neuronal Activity during Migration Controls the Recruitment of Specific Interneuron Subtypes in the Postnatal Mouse Olfactory Bulb
| Autor: | Stéphane Bugeon, Harold Cremer, Jean-Claude Platel, Clara Haubold, Alexandre Ryzynski |
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| Přispěvatelé: | Institut de Biologie du Développement de Marseille (IBDM), Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Centre National de la Recherche Scientifique (CNRS), ANR-17-CE16-0025,MicroRNAct,Identification de complexes microARN/mARN fonctionnels dans le cerveau antérieur de souris: de la neurogenèse au comportement et à la pathologie(2017) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0301 basic medicine
Male Interneuron neuronal activity Significance Statement Rostral migratory stream [SDV]Life Sciences [q-bio] Neurogenesis Subventricular zone Mice Transgenic SVZ Biology migration 03 medical and health sciences Mice 0302 clinical medicine Organ Culture Techniques Cell Movement Interneurons medicine Premovement neuronal activity Animals Research Articles Neurons General Neuroscience postnatal neurogenesis Granule cell Olfactory Bulb Neural stem cell Olfactory bulb Molecular Imaging 030104 developmental biology medicine.anatomical_structure nervous system Animals Newborn Female Neuroscience 030217 neurology & neurosurgery |
| Zdroj: | J Neurosci Journal of Neuroscience Journal of Neuroscience, 2021, 41 (12), pp.2630-2644. ⟨10.1523/JNEUROSCI.1960-20.2021⟩ |
| ISSN: | 0270-6474 1529-2401 |
| DOI: | 10.1523/JNEUROSCI.1960-20.2021⟩ |
| Popis: | Neuronal activity has been identified as a key regulator of neuronal network development, but the impact of activity on migration and terminal positioning of interneuron subtypes is poorly understood. The absence of early subpopulation markers and the presence of intermingled migratory and post-migratory neurons makes the developing cerebral cortex a difficult model to answer these questions. Postnatal neurogenesis in the subventricular zone offers a more accessible and compartmentalized model. Neural stem cells regionalized along the border of the lateral ventricle produce two main subtypes of neural progenitors, granule cells and periglomerular neurons that migrate tangentially in the rostral migratory stream before migrating radially in the OB layers. Here we take advantage of targeted postnatal electroporation to compare the migration of these two population. We do not observe any obvious differences regarding the mode of tangential or radial migration between these two subtypes. However, we find a very striking increase of intrinsic calcium activity only in granule cell precursors when they switch from tangential to radial migration. By decreasing neuronal excitability in granule cell precursors, we find that neuronal activity is critical for normal migratory speed at the end of tangential migration. Importantly, we also find that activity is required for normal positioning and survival of granule cell precursors in the OB layers. Strikingly, decreasing activity of periglomerular neuron precursors did not impact their positioning or survival. Altogether these findings suggest that neuronal excitability plays a subtype specific role during the late stage of migration of postnatally born olfactory bulb interneurons.Significance StatementWhile neuronal activity is a critical factor regulating different aspects of neurogenesis, it has been challenging to study its role during the migration of different neuronal subpopulations. Here, we use postnatal targeted electroporation to label and manipulate the two main olfactory bulb interneuron subpopulations during their migration: granule cell and periglomerular neuron precursors. We find a very striking increase of calcium activity only in granule cell precursors when they switch from tangential to radial migration. Interestingly, blocking activity in granule cell precursors affected their migration, positioning and survival while periglomerular neuron precursors are not affected. These results suggest that neuronal activity is required specifically for the recruitment of granule cell precursors in the olfactory bulb layers. |
| Databáze: | OpenAIRE |
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