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. 2024 Nov 15;10(46):eadp3751.
doi: 10.1126/sciadv.adp3751. Epub 2024 Nov 15.

Gene-environment interactions in the influence of maternal education on adolescent neurodevelopment using ABCD study

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Gene-environment interactions in the influence of maternal education on adolescent neurodevelopment using ABCD study

Runye Shi et al. Sci Adv. .

Abstract

Maternal education was strongly correlated with adolescent brain morphology, cognitive performances, and mental health. However, the molecular basis for the effects of maternal education on the structural neurodevelopment remains unknown. Here, we conducted gene-environment-wide interaction study using the Adolescent Brain Cognitive Development cohort. Seven genomic loci with significant gene-environment interactions (G×E) on regional gray matter volumes were identified, with enriched biological functions related to metabolic process, inflammatory process, and synaptic plasticity. Additionally, genetic overlapping results with behavioral and disease-related phenotypes indicated shared biological mechanism between maternal education modified neurodevelopment and related behavioral traits. Finally, by decomposing the multidimensional components of maternal education, we found that socioeconomic status, rather than family environment, played a more important role in modifying the genetic effects on neurodevelopment. In summary, our study provided analytical evidence for G×E effects regarding adolescent neurodevelopment and explored potential biological mechanisms as well as social mechanisms through which maternal education could modify the genetic effects on regional brain development.

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Figures

Fig. 1.
Fig. 1.. The influence of ME on regional GMVs.
(A) Spearman correlations between ME and regional GMVs, adjusting for age, site, handedness, sex, and estimated intracranial volume. Regions in gray indicate nonsignificant correlations after BH-FDR correction. (B) Longitudinal effects of ME on cortical (left) and subcortical brain GMVs. Both GMVs (top) and GMV change rate (bottom) for participants with high, medium, and low levels of ME are estimated. The bands indicate 95% confidence intervals for predicted GMV at the top and relative regression coefficients at the bottom.
Fig. 2.
Fig. 2.. Genomic loci with genome-wide significant main and interaction effects with ME on regional brain GMVs.
SNPs in red indicate interaction effects only, while those in purple indicate both main and interaction effects. These SNPs are then mapped to functional genes using position, molecular phenotype quantitative trait loci, chromatin interaction, and in silico functional prediction mapping methods. Genes involved in synaptic plasticity, inflammatory process, and metabolic process are highlighted in purple, brown, and green, respectively. Plot created using PhenoGram (http://visualization.ritchielab.org).
Fig. 3.
Fig. 3.. Validation of G×ME and the interpretation of the influence of ME on neurodevelopment.
(A) Validation of significant GEWIS results obtained from ABCD using the leave-out samples as an internal validation (top) and independent adolescent study IMAGEN as an external validation (bottom). (B) Genetic overlap between SNPs showing G×ME effects on regional brain GMVs and those showing strong associations with multiple diseases and related traits. * indicates a significant overlap after BY-FDR correction. BMI, body mass index; WCadjBMI, waist circumference–adjusted BMI; IBD, inflammatory bowel disease; MS, multiple sclerosis; RA, rheumatoid arthritis; ADHD, attention-deficit/hyperactivity disorder; ASD, autism; Dep, depression; SCZ, schizophrenia; BIP, bipolar disorder; AD, Alzheimer’s disease; PD, Parkinson’s disease. (C) Significant G×ME effects after adjusting for family or social environmental factors. * indicates remained genome-wide significant G×ME effects. FCS, family conflict score; PMS, parenting monitoring score; ADI, area deprivation index; HI, household income.

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