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Layer-specific morphological and molecular differences in neocortical astrocytes and their dependence on neuronal layers

Lanjakornsiripan, D; Pior, B-J; Kawaguchi, D; Furutachi, S; Tahara, T; Katsuyama, Y; Suzuki, Y; ... Gotoh, Y; + view all (2018) Layer-specific morphological and molecular differences in neocortical astrocytes and their dependence on neuronal layers. Nature Communications , 9 , Article 1623. 10.1038/s41467-018-03940-3. Green open access

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Abstract

Non-pial neocortical astrocytes have historically been thought to comprise largely a nondiverse population of protoplasmic astrocytes. Here we show that astrocytes of the mouse somatosensory cortex manifest layer-specific morphological and molecular differences. Two- and three-dimensional observations revealed that astrocytes in the different layers possess distinct morphologies as reflected by differences in cell orientation, territorial volume, and arborization. The extent of ensheathment of synaptic clefts by astrocytes in layer II/III was greater than that by those in layer VI. Moreover, differences in gene expression were observed between upper-layer and deep-layer astrocytes. Importantly, layer-specific differences in astrocyte properties were abrogated in reeler and Dab1 conditional knockout mice, in which neuronal layers are disturbed, suggesting that neuronal layers are a prerequisite for the observed morphological and molecular differences of neocortical astrocytes. This study thus demonstrates the existence of layer-specific interactions between neurons and astrocytes, which may underlie their layer-specific functions.

Type: Article
Title: Layer-specific morphological and molecular differences in neocortical astrocytes and their dependence on neuronal layers
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1038/s41467-018-03940-3
Publisher version: http://dx.doi.org/10.1038/s41467-018-03940-3
Language: English
Additional information: Copyright © The Author(s) 2018. Open Access: This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > The Sainsbury Wellcome Centre
URI: https://discovery.ucl.ac.uk/id/eprint/10047591
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