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Updated: Sep 23, 2025
Optimized Analysis of DNA Methylation and Gene Expression from Small, Anatomically-defined Areas of the Brain
Published on: July 12, 2012
Maternal attachment insecurity, maltreatment history, and depressive symptoms are associated with broad DNA
Thalia K Robakis1, Marissa C Roth2, Lucy S King3
1Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA. thalia.robakis@mssm.edu.
Insights
Maternal stress and depression are linked to infant DNA methylation changes, impacting early development. These epigenetic alterations in infants correlate with later socioemotional and behavioral issues in toddlers.
Area of Science:
- Developmental biology
- Epigenetics
- Child psychology
Background:
- Early life environment and maternal factors significantly influence child development.
- Identifying early molecular markers can predict and support children's long-term health.
- Maternal mental health and adverse experiences are critical influences on offspring development.
Purpose of the Study:
- To investigate the association between maternal characteristics (attachment insecurity, maltreatment history, depressive symptoms) and infant DNA methylation patterns.
- To determine if infant epigenetic alterations correlate with socioemotional and behavioral functioning in toddlerhood.
- To identify novel genomic regions in infants affected by maternal factors and linked to later behavioral outcomes.
Main Methods:
- Recruited 156 pregnant women, assessing maternal psychiatric history and depressive symptoms.
- Collected buccal cell DNA from 32 infants for genome-wide DNA methylation analysis (5x10^6 CpG sites).
- Utilized clustering-based significance criteria for robust analysis of methylation patterns and correlated findings with 18-month child behavioral data.
Main Results:
- Tens of thousands of infant CpG sites showed altered DNA methylation associated with maternal attachment insecurity, childhood maltreatment, and prenatal/postnatal depressive symptoms.
- Affected genes are involved in crucial developmental processes, including hormonal regulation, immune function, and neurotransmission.
- DNA methylation density in specific genes correlated significantly with socioemotional and behavioral problems observed in toddlers.
Conclusions:
- This study provides the first longitudinal evidence linking maternal characteristics to specific infant DNA methylation patterns.
- Identified novel infant genomic regions epigenetically modified by maternal factors and associated with offspring socioemotional and behavioral outcomes.
- Findings highlight the potential of epigenetics as an early indicator of developmental risks and a target for early intervention.
Abstract:
The early environment, including maternal characteristics, provides many cues to young organisms that shape their long-term physical and mental health. Identifying the earliest molecular events that precede observable developmental outcomes could help identify children in need of support prior to the onset of physical and mental health difficulties. In this study, we examined whether mothers' attachment insecurity, maltreatment history, and depressive symptoms were associated with alterations in DNA methylation patterns in their infants, and whether these correlates in the infant epigenome were associated with socioemotional and behavioral functioning in toddlerhood. We recruited 156 women oversampled for histories of depression, who completed psychiatric interviews and depression screening during pregnancy, then provided follow-up behavioral data on their children at 18 months. Buccal cell DNA was obtained from 32 of their infants for a large-scale analysis of methylation patterns across 5 × 106 individual CpG dinucleotides, using clustering-based significance criteria to control for multiple comparisons. We found that tens of thousands of individual infant CpGs were alternatively methylated in association with maternal attachment insecurity, maltreatment in childhood, and antenatal and postpartum depressive symptoms, including genes implicated in developmental patterning, cell-cell communication, hormonal regulation, immune function/inflammatory response, and neurotransmission. Density of DNA methylation at selected genes from the result set was also significantly associated with toddler socioemotional and behavioral problems. This is the first report to identify novel regions of the human infant genome at which DNA methylation patterns are associated longitudinally both with maternal characteristics and with offspring socioemotional and behavioral problems in toddlerhood.
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