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.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Lanjakornsiripan D,Pior BJ,Kawaguchi D,Furutachi S,Tahara T,Katsuyama Y,Suzuki Y,Fukazawa Y,Gotoh Ydoi
10.1038/s41467-018-03940-3subject
Has Abstractpub_date
2018-04-24 00:00:00pages
1623issue
1issn
2041-1723pii
10.1038/s41467-018-03940-3journal_volume
9pub_type
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