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Neural Stem Cell Coordination a Developmental Evolutionary and Circuit perspec...

Neural Stem Cell Coordination a Developmental Evolutionary and Circuit perspective The adult mammalian brain exhibits a remarkable capacity of adaptation, which has long been thought to result from synaptic remodeling of neurons born during development. Importantly, the discovery that new neurons can be generate... ver más

31/12/2029

CNRS

1M€

Presupuesto del proyecto: 1M€

Líder del proyecto

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo HORIZON EUROPE notifico la concesión del proyecto el día 2024-09-27

ERC-2024-STG: ERC STARTING GRANTS Scope:Objectives

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1 Participantes

CNRS

1.50M€ | Lider

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Duración del proyecto: 63 meses Fecha Inicio: 2024-09-27
Fecha Fin: 2029-12-31

Líder del proyecto

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 1M€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto The adult mammalian brain exhibits a remarkable capacity of adaptation, which has long been thought to result from synaptic remodeling of neurons born during development. Importantly, the discovery that new neurons can be generated in the adult by neural stem cells (NSCs) revolutionized our understanding of brain plasticity. In the adult mouse brain, NSCs reside in two specialized niches: the dentate gyrus (DG), and the ventricular-subventricular zone (V-SVZ) lining the lateral ventricles. Although anatomically and functionally different, these two neurogenic regions share several cell types, including the glial NSCs and their lineage, and are sensitive to similar environmental stimuli. This raises the exciting possibility that NSCs within and between niches could coordinate their behavior under specific contexts. I recently showed that in the V-SVZ, regionally-distinct NSC pools can selectively and transiently respond to specific physiological states. However, such spatial and functional stem cell diversity in the DG remains to be investigated. Here, we hypothesize that the two brain niches form a single plasticity-generator system, comprising multiple stem cell subpopulations, some of which may be inter-dependent. We will first investigate whether some NSC pools across both niches share unexpected molecular features and developmental trajectories. To determine whether and how this V-SVZ/DG system evolved to sustain a plasticity-oriented, regionally-restricted, and transient process in mammals, we will perform comparative transcriptomics with a contrasting model of adult neurogenesis in Zebrafish, which is regeneration-oriented, widespread and continuous. Finally, we will test whether the recruitment of specific adult NSCs in the mammalian brain is orchestrated by neuronal circuit activity outside the niche. Altogether, our work will uncover the molecular, cellular and circuit logic of adult mammalian neurogenesis in light of NSC heterogeneous identities.

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