Gene expression differences associated with alcohol use disorder in human brain.

Autor: Willis C; GenOmics and Translational Research Center, RTI International, Research Triangle Park, NC, USA. cdwillis@rti.org., White JD; GenOmics and Translational Research Center, RTI International, Research Triangle Park, NC, USA., Minto MS; GenOmics and Translational Research Center, RTI International, Research Triangle Park, NC, USA., Quach BC; GenOmics and Translational Research Center, RTI International, Research Triangle Park, NC, USA., Han S; Lieber Institute for Brain Development (LIBD), Baltimore, MD, USA., Tao R; Lieber Institute for Brain Development (LIBD), Baltimore, MD, USA., Shin JH; Lieber Institute for Brain Development (LIBD), Baltimore, MD, USA., Deep-Soboslay A; Lieber Institute for Brain Development (LIBD), Baltimore, MD, USA., Hyde TM; Lieber Institute for Brain Development (LIBD), Baltimore, MD, USA., Mayfield RD; Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX, USA., Webb BT; GenOmics and Translational Research Center, RTI International, Research Triangle Park, NC, USA., Johnson EO; GenOmics and Translational Research Center, RTI International, Research Triangle Park, NC, USA.; Fellow Program, RTI International, Research Triangle Park, NC, USA., Kleinman JE; Lieber Institute for Brain Development (LIBD), Baltimore, MD, USA., Bierut LJ; Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA., Hancock DB; GenOmics and Translational Research Center, RTI International, Research Triangle Park, NC, USA.
Jazyk: angličtina
Zdroj: Molecular psychiatry [Mol Psychiatry] 2024 Oct 12. Date of Electronic Publication: 2024 Oct 12.
DOI: 10.1038/s41380-024-02777-1
Abstrakt: Excessive alcohol consumption is a leading cause of preventable death worldwide. To improve understanding of neurobiological mechanisms associated with alcohol use disorder (AUD) in humans, we compared gene expression data from deceased individuals with and without AUD across two addiction-relevant brain regions: the nucleus accumbens (NAc) and dorsolateral prefrontal cortex (DLPFC). Bulk RNA-seq data from NAc and DLPFC (N ≥50 with AUD, ≥46 non-AUD) were analyzed for differential gene expression using modified negative binomial regression adjusting for technical and biological covariates. The region-level results were meta-analyzed with those from an independent dataset (N NAc  = 28 AUD, 29 non-AUD; N PFC  = 66 AUD, 77 non-AUD). We further tested for heritability enrichment of AUD-related phenotypes, gene co-expression networks, gene ontology enrichment, and drug repurposing. We identified 176 differentially expressed genes (DEGs; 12 in both regions, 78 in NAc only, 86 in DLPFC only) for AUD in our new dataset. After meta-analyzing with published data, we identified 476 AUD DEGs (25 in both regions, 29 in NAc only, 422 in PFC only). Of these DEGs, 17 were significant when looked up in GWAS of problematic alcohol use or drinks per week. Gene co-expression analysis showed both concordant and unique gene networks across brain regions. We also identified 29 and 436 drug compounds that target DEGs from our meta-analysis in NAc and PFC, respectively. This study identified robust AUD-associated DEGs, contributing novel neurobiological insights into AUD and highlighting genes targeted by known drug compounds, generating opportunity for drug repurposing to treat AUD.
(© 2024. The Author(s).)
Databáze: MEDLINE
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