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Astrocyte development—More questions than answers
Journal article   Open access   Peer reviewed

Astrocyte development—More questions than answers

Kathryn M. Markey, Jillian C. Saunders, Jana Smuts, Catherine R. von Reyn and A. Denise R. Garcia
Frontiers in cell and developmental biology, v 11
01 Mar 2023
url
https://doi.org/10.3389/fcell.2023.1063843View
Published, Version of Record (VoR)CC BY V4.0 Open

Abstract

astrocyte astrocyte-like glia development Drosophila glia neuropil glia
The past 15–20 years has seen a remarkable shift in our understanding of astrocyte contributions to central nervous system (CNS) function. Astrocytes have emerged from the shadows of neuroscience and are now recognized as key elements in a broad array of CNS functions. Astrocytes comprise a substantial fraction of cells in the human CNS. Nevertheless, fundamental questions surrounding their basic biology remain poorly understood. While recent studies have revealed a diversity of essential roles in CNS function, from synapse formation and function to blood brain barrier maintenance, fundamental mechanisms of astrocyte development, including their expansion, migration, and maturation, remain to be elucidated. The coincident development of astrocytes and synapses highlights the need to better understand astrocyte development and will facilitate novel strategies for addressing neurodevelopmental and neurological dysfunction. In this review, we provide an overview of the current understanding of astrocyte development, focusing primarily on mammalian astrocytes and highlight outstanding questions that remain to be addressed. We also include an overview of Drosophila glial development, emphasizing astrocyte-like glia given their close anatomical and functional association with synapses. Drosophila offer an array of sophisticated molecular genetic tools and they remain a powerful model for elucidating fundamental cellular and molecular mechanisms governing astrocyte development. Understanding the parallels and distinctions between astrocyte development in Drosophila and vertebrates will enable investigators to leverage the strengths of each model system to gain new insights into astrocyte function.

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Web of Science research areas
Cell Biology
Developmental Biology
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