Atad1 Is a Potential Candidate Gene for Prepulse Inhibition

Area of Science:

• Neurogenetics
• Psychiatric Genetics

Background:

• Prepulse inhibition (PPI) is a key phenotype in schizophrenia and other psychiatric disorders.
• Identifying genetic influences on PPI is crucial for understanding these conditions.

Purpose of the Study:

• To identify genes that influence prepulse inhibition (PPI) using Quantitative Trait Locus (QTL) analysis in mice.
• To investigate the role of candidate genes in psychiatric traits using human data.

Main Methods:

• Performed QTL analysis on 59 BXD recombinant inbred mouse strains to map PPI-related loci.
• Utilized genetic, partial, and literature correlations to identify candidate genes.
• Conducted gene enrichment, protein-protein interaction, Phenome-wide association studies (PheWAS), and differential expression analyses.

Main Results:

• Identified significant male-specific QTLs on Chromosome 19, with ATPase family, AAA domain containing 1 (Atad1) as the strongest candidate.
• Found strong cis-modulation of Atad1 expression in the nucleus accumbens (NAc) in mice.
• Linked Atad1 to neurotransmission pathways and identified direct interaction partners (GRIA2, ASNA1).
• PheWAS revealed associations between Atad1 and psychiatric traits, including schizophrenia.
• Human data showed differential Atad1 expression in schizophrenia patients.

Conclusions:

• Atad1 is a strong candidate gene for PPI.
• Further investigation of Atad1 is warranted for its role in psychiatric disorders like schizophrenia.