期刊
TRANSLATIONAL PSYCHIATRY
卷 12, 期 1, 页码 -出版社
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DOI: 10.1038/s41398-022-02063-0
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This study used single-nuclei RNA sequencing to identify differential gene expression in astrocytes and GABAergic neurons in the CeA induced by alcohol withdrawal. It revealed that a subtype of CeA GABAergic neurons, the PKC delta expressing neurons, have a unique sensitivity to alcohol exposure and may play an important role in alcohol withdrawal.
The central amygdala (CeA) contains a diverse population of cells, including multiple subtypes of GABAergic neurons, along with glia and epithelial cells. Specific CeA cell types have been shown to affect alcohol consumption in animal models of dependence and may be involved in negative affect during alcohol withdrawal. We used single-nuclei RNA sequencing to determine cell-type specificity of differential gene expression in the CeA induced by alcohol withdrawal. Cells within the CeA were classified using unbiased clustering analyses and identified based on the expression of known marker genes. Differential gene expression analysis was performed on each identified CeA cell-type. It revealed differential gene expression in astrocytes and GABAergic neurons associated with alcohol withdrawal. GABAergic neurons were further subclassified into 13 clusters of cells. Analyzing transcriptomic responses in these subclusters revealed that alcohol exposure induced multiple differentially expressed genes in one subtype of CeA GABAergic neurons, the protein kinase C delta (PKC delta) expressing neurons. These results suggest that PKC delta neurons in the CeA may be uniquely sensitive to the effects of alcohol exposure and identify a novel population of cells in CeA associated with alcohol withdrawal.
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