Astrocyte development in the cerebral cortex: Complexity of their origin, genesis, and maturation

In the mammalian brain, astrocytes form a heterogeneous population at the morphological, molecular, functional, intra-, and inter-region levels. In the past, a few types of astrocytes have been first described based on their morphology and, thereafter, according to limited key molecular markers. Wit...

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Main Authors: Solène Clavreul, Laura Dumas, Karine Loulier
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-09-01
Series:Frontiers in Neuroscience
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fnins.2022.916055/full
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author Solène Clavreul
Laura Dumas
Karine Loulier
author_facet Solène Clavreul
Laura Dumas
Karine Loulier
author_sort Solène Clavreul
collection DOAJ
description In the mammalian brain, astrocytes form a heterogeneous population at the morphological, molecular, functional, intra-, and inter-region levels. In the past, a few types of astrocytes have been first described based on their morphology and, thereafter, according to limited key molecular markers. With the advent of bulk and single-cell transcriptomics, the diversity of astrocytes is now progressively deciphered and its extent better appreciated. However, the origin of this diversity remains unresolved, even though many recent studies unraveled the specificities of astroglial development at both population and individual cell levels, particularly in the cerebral cortex. Despite the lack of specific markers for each astrocyte subtype, a better understanding of the cellular and molecular events underlying cortical astrocyte diversity is nevertheless within our reach thanks to the development of intersectional lineage tracing, microdissection, spatial mapping, and single-cell transcriptomic tools. Here we present a brief overview describing recent findings on the genesis and maturation of astrocytes and their key regulators during cerebral cortex development. All these studies have considerably advanced our knowledge of cortical astrogliogenesis, which relies on a more complex mode of development than their neuronal counterparts, that undeniably impact astrocyte diversity in the cerebral cortex.
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spelling doaj.art-1df0b1db448a44fdb0e1e99dc7c866a52022-12-22T01:45:07ZengFrontiers Media S.A.Frontiers in Neuroscience1662-453X2022-09-011610.3389/fnins.2022.916055916055Astrocyte development in the cerebral cortex: Complexity of their origin, genesis, and maturationSolène ClavreulLaura DumasKarine LoulierIn the mammalian brain, astrocytes form a heterogeneous population at the morphological, molecular, functional, intra-, and inter-region levels. In the past, a few types of astrocytes have been first described based on their morphology and, thereafter, according to limited key molecular markers. With the advent of bulk and single-cell transcriptomics, the diversity of astrocytes is now progressively deciphered and its extent better appreciated. However, the origin of this diversity remains unresolved, even though many recent studies unraveled the specificities of astroglial development at both population and individual cell levels, particularly in the cerebral cortex. Despite the lack of specific markers for each astrocyte subtype, a better understanding of the cellular and molecular events underlying cortical astrocyte diversity is nevertheless within our reach thanks to the development of intersectional lineage tracing, microdissection, spatial mapping, and single-cell transcriptomic tools. Here we present a brief overview describing recent findings on the genesis and maturation of astrocytes and their key regulators during cerebral cortex development. All these studies have considerably advanced our knowledge of cortical astrogliogenesis, which relies on a more complex mode of development than their neuronal counterparts, that undeniably impact astrocyte diversity in the cerebral cortex.https://www.frontiersin.org/articles/10.3389/fnins.2022.916055/fullastrocytescerebral cortexgliogenesisproliferationmaturation
spellingShingle Solène Clavreul
Laura Dumas
Karine Loulier
Astrocyte development in the cerebral cortex: Complexity of their origin, genesis, and maturation
Frontiers in Neuroscience
astrocytes
cerebral cortex
gliogenesis
proliferation
maturation
title Astrocyte development in the cerebral cortex: Complexity of their origin, genesis, and maturation
title_full Astrocyte development in the cerebral cortex: Complexity of their origin, genesis, and maturation
title_fullStr Astrocyte development in the cerebral cortex: Complexity of their origin, genesis, and maturation
title_full_unstemmed Astrocyte development in the cerebral cortex: Complexity of their origin, genesis, and maturation
title_short Astrocyte development in the cerebral cortex: Complexity of their origin, genesis, and maturation
title_sort astrocyte development in the cerebral cortex complexity of their origin genesis and maturation
topic astrocytes
cerebral cortex
gliogenesis
proliferation
maturation
url https://www.frontiersin.org/articles/10.3389/fnins.2022.916055/full
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AT lauradumas astrocytedevelopmentinthecerebralcortexcomplexityoftheirorigingenesisandmaturation
AT karineloulier astrocytedevelopmentinthecerebralcortexcomplexityoftheirorigingenesisandmaturation