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Tier IV

51914

GS405734: WWP1 KO vs WT

Tier III

3091

GS407752: Glial gene expression associated with alcohol dependence in mice in microglia q-value

Figure Label:	Alcohol DEG in mice in microglia q-value
Description:	Chronic alcohol abuse alters the molecular structure and function of brain cells. Recent work suggests adaptations made by glial cells, such as astrocytes and microglia, regulate physiological and behavioral changes associated with addiction. Defining how alcohol dependence alters the transcriptome of different cell types is critical for developing the mechanistic hypotheses necessary for a nuanced understanding of cellular signaling in the alcohol-dependent brain. We performed RnA-sequencing on total homogenate and glial cell populations isolated from mouse prefrontal cortex (pfc) following chronic intermittent ethanol vapor exposure (cie). compared with total homogenate, we observed unique and robust gene expression changes in astrocytes and microglia in response to cie. Gene co-expression network analysis revealed biological pathways and hub genes associated with cie in astrocytes and microglia that may regulate alcohol-dependent phenotypes. Astrocyte identity and synaptic calcium signaling genes were enriched in alcohol-associated astrocyte networks, while tGf-β signaling and inflammatory response genes were disrupted by CIE treatment in microglia gene networks. Genes related to innate immune signaling, specifically interferon pathways, were consistently up-regulated across cie-exposed astrocytes, microglia, and total homogenate pfc tissue. This study illuminates the cell-specific effects of chronic alcohol exposure and provides novel molecular targets for studying alcohol dependence.
Authors:	Emma K Erickson, Yuri A Blednov, R Adron Harris, R Dayne Mayfield

Tier III

3091

GS407754: Glial gene expression associated with alcohol dependence in mice in total homogenate q-value

Figure Label:	Alcohol DEG in mice in total homogenate q-value
Description:	Chronic alcohol abuse alters the molecular structure and function of brain cells. Recent work suggests adaptations made by glial cells, such as astrocytes and microglia, regulate physiological and behavioral changes associated with addiction. Defining how alcohol dependence alters the transcriptome of different cell types is critical for developing the mechanistic hypotheses necessary for a nuanced understanding of cellular signaling in the alcohol-dependent brain. We performed RnA-sequencing on total homogenate and glial cell populations isolated from mouse prefrontal cortex (pfc) following chronic intermittent ethanol vapor exposure (cie). compared with total homogenate, we observed unique and robust gene expression changes in astrocytes and microglia in response to cie. Gene co-expression network analysis revealed biological pathways and hub genes associated with cie in astrocytes and microglia that may regulate alcohol-dependent phenotypes. Astrocyte identity and synaptic calcium signaling genes were enriched in alcohol-associated astrocyte networks, while tGf-β signaling and inflammatory response genes were disrupted by CIE treatment in microglia gene networks. Genes related to innate immune signaling, specifically interferon pathways, were consistently up-regulated across cie-exposed astrocytes, microglia, and total homogenate pfc tissue. This study illuminates the cell-specific effects of chronic alcohol exposure and provides novel molecular targets for studying alcohol dependence.
Authors:	Emma K Erickson, Yuri A Blednov, R Adron Harris, R Dayne Mayfield

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Supported by NIH R01 AA18776 jointly funded by NIAAA and NIDA, and JAX Center for Precision Genetics NIH U54 OD 020351