Identification of potential therapeutic targets for problematic alcohol use using multi-omics data

Area of Science:

• Genetics
• Neuroscience
• Pharmacology

Background:

• Problematic alcohol use (PAU) is a global health concern with few effective treatments.
• Previous genetic studies identified regions linked to PAU, but causal genes and proteins remain elusive.
• Identifying specific molecular targets is crucial for developing novel therapeutic strategies.

Purpose of the Study:

• To identify specific genes and proteins causally associated with problematic alcohol use (PAU).
• To integrate diverse genetic and molecular data for a comprehensive understanding of PAU.
• To inform the development of improved treatment strategies for PAU.

Main Methods:

• Mendelian randomization (MR) was employed to investigate causal relationships.
• Genetic data was combined with gene expression data from brain and blood tissues.
• Statistical tests, colocalization analyses, and phenome-wide association studies were used for validation.

Main Results:

• 97 genes and 13 proteins were identified as potentially causal for PAU, predominantly in brain tissues.
• Associations were robust, confirmed by Bonferroni correction and cross-dataset consistency.
• Identified targets showed concordant effects with PAU on other health outcomes, indicating drug repurposing potential.

Conclusions:

• Molecular signatures in both brain and blood tissues are implicated in PAU development.
• Integrative multi-omics analyses revealed shared biological pathways across neural and peripheral systems.
• Findings suggest potential for developing multi-systemic interventions for PAU with improved safety profiles.