Journal
CELL REPORTS
Volume 38, Issue 5, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.celrep.2022.110328
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Funding
- NIH R01 awards [NS114478, NS107342, DC016065, EY027202]
- NIMH [ZIAMH002964]
- NSF GRFP award
- NIH [T32GM007231]
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In this study, five different populations of satellite glia from sympathetic and sensory ganglia were identified using single-cell RNA sequencing analysis. Furthermore, sensory and sympathetic-specific satellite glia were found to have different molecular characteristics.
Satellite glia are the major glial type found in sympathetic and sensory ganglia in the peripheral nervous system, and specifically, contact neuronal cell bodies. Sympathetic and sensory neurons differ in morphological, molecular, and electrophysiological properties. However, the molecular diversity of the associated satellite glial cells remains unclear. Here, using single-cell RNA sequencing analysis, we identify five different populations of satellite glia from sympathetic and sensory ganglia. We define three shared populations of satellite glia enriched in immune-response genes, immediate-early genes, and ion channels/ECM-Interactors, respectively. Sensory- and sympathetic-specific satellite glia are differentially enriched for modulators of lipid synthesis and metabolism. Sensory glia are also specifically enriched for genes involved in glutamate turnover Furthermore, satellite glia and Schwann cells can be distinguished by unique transcriptional signatures. This study reveals the remarkable heterogeneity of satellite glia in the peripheral nervous system.
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