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Lunatic Fringe-GFP Marks Lamina-Specific Astrocytes That Regulate Sensory Processing.

Authors :
Akdemir, Ekin Su
Junsung Woo
Bosquez Huerta, Navish A.
Lozzi, Brittney
Groves, Andrew K.
Harmanci, Akdes Serin
Deneen, Benjamin
Source :
Journal of Neuroscience. 1/26/2022, Vol. 42 Issue 4, p567-580. 14p.
Publication Year :
2022

Abstract

Astrocytes are the most abundant glial cell in the brain and perform a wide range of tasks that support neuronal function and circuit activities. There is emerging evidence that astrocytes exhibit molecular and cellular heterogeneity; however, whether distinct subpopulations perform these diverse roles remains poorly defined. Here we show that the Lunatic Fringe- GFP (Lfng-GFP) bacteria artificial chromosome mouse line from both sexes specifically labels astrocyte populations within lamina III and IV of the dorsal spinal cord. Transcriptional profiling of Lfng-GFP+ astrocytes revealed unique molecular profiles, featuring an enriched expression of Notch- and Wnt- pathway components. Leveraging CRE-DOG viral tools, we ablated Lfng-GFP+ astrocytes, which decreased neuronal activity in lamina III and IV and impaired mechanosensation associated with light touch. Together, our findings identify Lfng-GFP+ astrocytes as a unique subpopulation that occupies a distinct anatomic location in the spinal cord and directly contributes to neuronal function and sensory responses. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
02706474
Volume :
42
Issue :
4
Database :
Academic Search Index
Journal :
Journal of Neuroscience
Publication Type :
Academic Journal
Accession number :
154902842
Full Text :
https://doi.org/10.1523/JNEUROSCI.1392-21.2021