Epigenetic mechanisms in alcohol- and adversity-induced developmental origins of neurobehavioral functioning.
- Authors
- Boschen, K E; Keller, S M; Roth, T L; Klintsova, A Y
- Year
- 2018
- Journal
- Neurotoxicology and teratology
- PMID
- 29305195
- DOI
- 10.1016/j.ntt.2017.12.009
- PMCID
- PMC5856624
The long-term effects of developmental alcohol and stress exposure are well documented in both humans and non-human animal models. Damage to the brain and attendant life-long impairments in cognition and increased risk for psychiatric disorders are debilitating consequences of developmental exposure to alcohol and/or psychological stress. Here we discuss evidence for a role of epigenetic mechanisms in mediating these consequences. While we highlight some of the common ways in which stress or alcohol impact the epigenome, we point out that little is understood of the epigenome's response to experiencing both stress and alcohol exposure, though stress is a contributing factor as to why women drink during pregnancy. Advancing our understanding of this relationship is of critical concern not just for the health and well-being of individuals directly exposed to these teratogens, but for generations to come.
Overview of epigenetic modifications induced by prenatal alcohol exposure (PAE). The presence of permissive transcriptional marks, such as histone acetylation or trimethylation, results in transcription of DNA into mRNA and translation of mRNA into protein. Under control conditions, normal CNS, endocrine, and immune function take place. PAE can remove these pro-transcriptional marks or increase the presence of repressive transcriptional marks, such as DNA methylation. Methyl groups either directly disrupt the ability of transcription factors to bind to DNA or recruit other transcriptional repressor proteins (i.e. MeCP2), reducing gene expression. miRNAs act post-transcriptionally to prevent mRNA from being translated into protein. This is associated with increased cell death and oxidative stress, altered cell cycle progression, disrupted endocrine and hypothalamic–pituitary–adrenal (HPA) axis signaling, and behavioral and cognitive deficits.
In response to stress, activation of the HPA axis takes place. The paraventricular nucleus (PVN) of the hypothalamus releases corticotropin-releasing factor (CRF), which then prompts the pituitary to release adrenocorticotropic hormone (ACTH), ultimately resulting in the adrenal cortex releasing glucocorticoids (Cortisol, CORT). Glucocorticoids act on the hippocampus, which provides negative feedback turning off HPA axis activity. Developmental stress induces epigenetic changes that affect many genes involved in HPA axis regulation. Epigenetic changes result in altered HPA axis activity and in turn, help explain behavioral aberrations observed in animals with a history of developmental stress.
Epigenetic modifications represent an avenue through which adverse environmental conditions can affect generations beyond the animals that were directly exposed via intergenerational and transgenerational transmission. Epigenetic marks can be passed through the paternal germline (F0) following preconception exposure to stress or alcohol, resulting in physiological, behavioral, or altered levels of global methylation in the offspring (F1). Exposure of a fetus (via exposure of the F0 pregnant dam) or neonate (F1) to alcohol or stress affects not only the directly exposed animal but also the developing germline. Altered epigenetic marks can then be transmitted to animals that were never exposed to the stressor or alcohol in the F2 generation and beyond, resulting in changes to methylation associated with multiple genes and epigenetic regulators and persistent behavioral perturbations. AE: Alcohol exposure; ELS: Early life stress.
| Name | Type |
|---|---|
| 5-hydroxymethylcytosine local | drug |
| 5-methylcytosine local | drug |
| A2AR local | gene |
| ACTH | drug |
| addiction | phenotype |
| ADHD | phenotype |
| adiposity | phenotype |
| adolescent animals | cohort |
| adolescent female offspring local | cohort |
| adolescents | cohort |
| Adolescent socially enriched rats local | cohort |
| adult female rodents with maltreatment local | cohort |
| adult male rodents with maltreatment local | cohort |
| adult mice | cohort |
| Adult Outcomes local | phenotype |
| adult rats | cohort |
| adults with PTSD local | cohort |
| alcohol | phenotype |
| Alcohol-exposed embryos local | cohort |
| Alcohol-exposed rat pups local | cohort |
| Alcohol Exposure | phenotype |
| Alcohol-induced damage local | phenotype |
| Altered differentiation local | phenotype |
| altered passive stress coping local | phenotype |
| Altered social behavior local | phenotype |
| amygdala | anatomy |
| animal model of early-life stress local | cohort |
| animal model of FASD local | cohort |
| animal models | cohort |
| Animals exposed to low licking and grooming local | cohort |
| antidepressants | drug |
| Antioxidant local | drug |
| anxiety | phenotype |
| anxiety-like behavior | phenotype |
| apoptosis | phenotype |
| Apoptotic pathways local | phenotype |
| Arterial defects local | phenotype |
| autism | phenotype |
| aversive behaviors | phenotype |
| AVP | drug |
| Bax | gene |
| Bdnf | gene |
| Bdnf exon I local | variant |
| BDNF exon I local | gene |
| Bdnf exon I hypomethylation local | phenotype |
| BDNF exon IV local | gene |
| BDNF exon IX local | gene |
| behavioral abnormalities | phenotype |
| behavioral deficits | phenotype |
| Behavioral Interventions local | drug |
| behavior of offspring local | phenotype |
| behavior problems | phenotype |
| bipolar disorder | phenotype |
| Birthweight local | phenotype |
| BMI | phenotype |
| Body mass index (BMI) | phenotype |
| bone growth delay local | phenotype |
| borderline personality disorder | phenotype |
| Both sexes local | cohort |
| brain | anatomy |
| Brain and behavioral development local | phenotype |
| brain damage | phenotype |
| brain development | phenotype |
| Buccal cells local | cohort |
| Canadian children with FASD local | cohort |
| cardiovascular disease | phenotype |
| caregiver maltreatment local | phenotype |
| Caregiver maltreatment local | phenotype |
| Caspase-3 | gene |
| cell cycle genes | gene |
| Cell cycle length local | phenotype |
| cell proliferation | phenotype |
| central obesity | phenotype |
| cerebellum | anatomy |
| choline | drug |
| citalopram | drug |
| clinical depression | phenotype |
| clozapine | drug |
| Clustered protocadherin genes local | gene |
| Cnr1 | gene |
| CNS function local | phenotype |
| cocaine | phenotype |
| cognition | phenotype |
| Cognitive and behavioral impairments local | phenotype |
| Cognitive and behavioral outcomes local | phenotype |
| cognitive development | phenotype |
| congenital heart disease | phenotype |
| Cord blood mononuclear cells local | cohort |
| cortex | anatomy |
| cortical dysfunction local | phenotype |
| corticosterone | drug |
| cortisol | drug |
| cortisol response | phenotype |
| Craniofacial malformations local | phenotype |
| CREBBP | gene |
| CRF | drug |
| CRFR1 local | gene |
| CRHR2 | gene |
| CTCF | gene |
| Cyclin family genes local | gene |
| Dam local | cohort |
| Dams local | cohort |
| Decreased H3K9 acetylation local | phenotype |
| decreased social interaction local | phenotype |
| DECREASED_SOCIAL_INTERACTION local | phenotype |
| delayed embryonic growth local | phenotype |
| Delayed motor maturity local | phenotype |
| Delayed orientation local | phenotype |
| Dendritic morphology local | phenotype |
| dentate gyrus | anatomy |
| depression | phenotype |
| depressive behavior | phenotype |
| depressive-like phenotype | phenotype |
| Developmental alcohol-exposed rats local | cohort |
| developmental delay | phenotype |
| developmental disorders | phenotype |
| developmental stress | phenotype |
| Developmental stress local | drug |
| Developmental Stress Exposure local | phenotype |
| DICER1 | gene |
| digit malformations | phenotype |
| Disturbed development of offspring local | phenotype |
| DNA methylation | drug |
| DNA methyltransferase | drug |
| DNMT1 | gene |
| Dnmt3a | gene |
| Dnmt3b | gene |
| DNMT3L local | gene |
| DNMTs | gene |
| dorsal hippocampus | anatomy |
| drug dependence | phenotype |
| drug-seeking behavior | phenotype |
| Dutch Hunger Winter local | cohort |
| early-stress local | phenotype |
| Early stress exposure local | drug |
| EHMT2 local | gene |
| Enhanced corticosterone response local | phenotype |
| environmental factors | drug |
| environmental influences | phenotype |
| epigenetic marks local | phenotype |
| Epigenetic modifications | phenotype |
| epigenetic regulators local | drug |
| Epigenetic Regulatory Molecules local | drug |
| epigenome local | drug |
| Epigenome local | phenotype |
| epigenome of offspring local | phenotype |
| escitalopram | drug |
| ESR1 | gene |
| estrogen | drug |
| ethanol consumption | phenotype |
| executive functioning | phenotype |
| exploratory behavior | phenotype |
| Eye malformations local | phenotype |
| F1 females local | cohort |
| F1 males local | cohort |
| F2 females local | cohort |
| F2 males local | cohort |
| F3 generation local | cohort |
| F3 males local | cohort |
| famine exposure local | phenotype |
| FASD local | cohort |
| female adolescent rodents with maltreatment local | cohort |
| female children with FASD local | cohort |
| Female children with FASD local | cohort |
| female pups local | cohort |
| female rats | cohort |
| female rats prenatally exposed to alcohol local | cohort |
| female subjects | cohort |
| Fetal alcohol effects | phenotype |
| Fetal Alcohol Spectrum Disorder | phenotype |
| Fetal alcohol spectrum disorders | phenotype |
| fetal alcohol syndrome | phenotype |
| Fetal cortex local | anatomy |
| Fetal coupling local | phenotype |
| Fetal rat local | cohort |
| Fkbp5 | gene |
| frontal cortex | anatomy |
| future stress exposure local | phenotype |
| GAD1 | gene |
| GADD45B local | gene |
| germline transmission local | phenotype |
| Gestational day 7 alcohol exposure local | cohort |
| Gestational days 7–21 alcohol exposure local | cohort |
| Gestational Stress local | phenotype |
| global DNA methylation local | phenotype |
| Global methylation local | phenotype |
| glucocorticoid | drug |
| Glucocorticoid receptor (GR) local | drug |
| glucocorticoids | drug |
| GR-associated epigenetic marks local | phenotype |
| growth restriction local | phenotype |
| growth retardation | phenotype |
| H19 local | gene |
| H3K27me3 | drug |
| H3K4me3 | drug |
| Hdac1 | gene |
| HDAC inhibitors | drug |
| HDACs | gene |
| Heart defects local | phenotype |
| Heart malformations local | phenotype |
| Hedonic behavior local | phenotype |
| higher basal corticosterone local | phenotype |
| High LG local | phenotype |
| High prenatal stress local | phenotype |
| Hippocampal dendritic complexity local | phenotype |
| hippocampus | anatomy |
| histone | drug |
| Histone 3 acetylation local | drug |
| Histone 3 lysine 4 trimethylation local | drug |
| Histone 3 lysine 9/14 acetylation local | drug |
| histone acetylation | drug |
| histone deacetylase inhibitor local | drug |
| Histone H3 local | drug |
| histone methylation local | drug |
| Histone trimethylation local | drug |
| Hormonal regulation local | phenotype |
| HPA axis | anatomy |
| HPA axis activation local | phenotype |
| HPA Axis Regulation local | phenotype |
| HSD11B2 | gene |
| humans | cohort |
| Hydroxymethylation local | phenotype |
| hyperactive stress response local | phenotype |
| Hypermethylation of cyclin genes local | phenotype |
| Hypoactivity local | phenotype |
| hypothalamus | anatomy |
| Ice Storm local | cohort |
| IGF2 | gene |
| Immobility (forced swim test) local | phenotype |
| Impaired behavioral performance local | phenotype |
| impaired motor coordination learning local | phenotype |
| Impaired response speed local | phenotype |
| impulsivity | phenotype |
| increased avoidance behavior local | phenotype |
| increased BDNF exon IV methylation local | phenotype |
| increased corticosterone response local | phenotype |
| increased CRFR1 expression local | phenotype |
| increased immobility local | phenotype |
| Increased methylation local | phenotype |
| Increased plasma corticosterone local | phenotype |
| individuals with borderline personality disorder local | cohort |
| Individuals with psychiatric illnesses local | cohort |
| infant caregiver experience local | phenotype |
| Infant rodents local | cohort |
| infants | cohort |
| infection local | drug |
| intimate partner violence | phenotype |
| intubation stress local | drug |
| Ki67 | drug |
| learning and memory | phenotype |
| LEARNING_AND_MEMORY_DEFICITS local | phenotype |
| Limited nesting resources local | phenotype |
| Lipid peroxidase local | drug |
| lipopolysaccharide | drug |
| locomotor activity | phenotype |
| locomotor hyperactivity | phenotype |
| LOCOMOTOR_HYPERACTIVITY local | phenotype |
| Locomotor sensitization to cocaine local | phenotype |
| long-term potentiation | phenotype |
| low birth weight | phenotype |
| Lower birth weight local | phenotype |
| low LG local | phenotype |
| Low LG local | phenotype |
| Low licking and grooming local | phenotype |
| lysine 9/14 acetylation local | drug |
| male adult rats local | cohort |
| male children with FASD local | cohort |
| Male children with FASD local | cohort |
| male mating patterns local | phenotype |
| male pups local | cohort |
| male rat local | cohort |
| Male rat local | cohort |
| male rats | cohort |
| male rats prenatally exposed to alcohol local | cohort |
| male subjects | cohort |
| maltreated animals local | cohort |
| maternal attachment local | phenotype |
| maternal behavior | phenotype |
| maternal care | phenotype |
| Maternal maltreatment local | phenotype |
| Maternal resource deprivation local | phenotype |
| maternal separation local | cohort |
| maternal separation | phenotype |
| Maternal separation local | cohort |
| Maternal stress local | phenotype |
| MeCP2 | gene |
| medial prefrontal cortex | anatomy |
| memory | phenotype |
| Mental dysfunction later in life local | phenotype |
| methamphetamine | drug |
| Methamphetamine self-administration local | phenotype |
| methyl-rich diet local | drug |
| Methyl-rich diet local | drug |
| mice | cohort |
| Mice prenatally exposed to alcohol local | cohort |
| microRNA | drug |
| Mild prenatal stress local | phenotype |
| Mineralocorticoid receptor local | drug |
| miR-103 local | gene |
| miR-103 local | variant |
| miR-140-3p local | variant |
| miR-151 local | gene |
| miR-151 local | variant |
| miR-153 local | variant |
| miR-20a local | gene |
| miR-20a local | variant |
| miR-21 local | variant |
| miR-30 local | variant |
| miR-335 local | variant |
| miR-9 | drug |
| miR-9 local | gene |
| miRNA | drug |
| miRNA expression | phenotype |
| miRNAs | drug |
| mixed-litter local | cohort |
| MKI67 | gene |
| monkeys | cohort |
| mood disorders | phenotype |
| Mother's cognitive appraisal local | drug |
| motor coordination | phenotype |
| Mouse embryonic fibroblasts local | cohort |
| Mouse model of FASD | cohort |
| MPOA local | anatomy |
| Multigenerational Effects of Alcohol and Stress local | phenotype |
| negative symptoms | phenotype |
| neglect | phenotype |
| Neural Development Genes local | gene |
| neural patterning | phenotype |
| neural stem cells | cohort |
| neural tube defects | phenotype |
| Neurodegenerative processes local | phenotype |
| neurodevelopment | phenotype |
| neurodevelopmental disorder | phenotype |
| neurogenesis | phenotype |
| neurological disorders | phenotype |
| neuronal differentiation | phenotype |
| neuroplasticity deficits local | phenotype |
| neuropsychiatric disorders | phenotype |
| newborn birthweight local | phenotype |
| newborn male offspring local | cohort |
| non-coding RNAs local | variant |
| non-exposed siblings local | cohort |
| Notch | gene |
| novel object and place recognition local | phenotype |
| NPY | gene |
| Nr3c1 | gene |
| NR3C1 1B splice variant local | variant |
| NR3C1 1C splice variant local | variant |
| NR3C1 1F exon promoter local | variant |
| NR3C1 1H splice variant local | variant |
| NR3C1 methylation local | phenotype |
| nucleus accumbens | anatomy |
| nucleus accumbens core | anatomy |
| Nutritional Interventions local | drug |
| offspring | cohort |
| offspring fitness local | phenotype |
| One-carbon metabolism local | drug |
| OPRM1 | cohort |
| Overactive corticosterone response to LPS local | phenotype |
| oxidative stress | phenotype |
| OXTR | gene |
| oxytocin | drug |
| Oxytocin binding local | phenotype |
| P7 alcohol exposure local | cohort |
| PAE local | drug |
| PAE adult rats local | cohort |
| paraventricular nucleus (PVN) | anatomy |
| Paternal alcohol exposure local | phenotype |
| paternal stress local | phenotype |
| PD7 local | cohort |
| perinatal alcohol exposure rats local | cohort |
| Perinatal exposure local | cohort |
| peripheral blood samples local | cohort |
| Pharmacological Interventions local | drug |
| Physical abnormalities local | phenotype |
| physical abuse | phenotype |
| Physical dysmorphologies local | phenotype |
| pituitary gland | anatomy |
| Pomc | gene |
| POMC hypermethylation local | phenotype |
| population | cohort |
| positive symptoms | phenotype |
| Postnatal alcohol exposure local | cohort |
| postnatal brain | anatomy |
| Postnatal day 21 (PD21) local | phenotype |
| postnatal stress local | phenotype |
| Postnatal Stress local | phenotype |
| postnatal stress (maltreatment) local | phenotype |
| posttranslational histone modifications local | drug |
| posttraumatic stress disorder | phenotype |
| Post-Traumatic Stress Disorder | phenotype |
| PP1 | gene |
| preconception stress local | phenotype |
| predator odor local | drug |
| prefrontal cortex | anatomy |
| pregnant women | cohort |
| Prenatal alcohol-exposed rodents local | cohort |
| prenatal alcohol exposure | phenotype |
| prenatal chronic variable stress local | phenotype |
| prenatal growth local | phenotype |
| Prenatal growth local | phenotype |
| Prenatally stressed animals local | cohort |
| prenatally stressed fetus local | phenotype |
| prenatal stress | phenotype |
| Prenatal stress local | drug |
| prenatal stress (rodent model) local | cohort |
| protein oxidation | phenotype |
| Protocadherin genes local | gene |
| psychiatric disorders | phenotype |
| psychopathology | phenotype |
| Pup mortality local | phenotype |
| pup mortality rates local | phenotype |
| pup responsiveness local | phenotype |
| Pups local | cohort |
| PVN | anatomy |
| Quebec ice storm cohort local | cohort |
| RASGRF1 | gene |
| rats | cohort |
| reactive oxygen species | drug |
| reduced BDNF expression local | phenotype |
| Reduced birth weight local | phenotype |
| Reduced differentiation potential local | phenotype |
| reduced fetal coupling local | phenotype |
| Reduced GR expression local | phenotype |
| reduced H3 acetylation local | phenotype |
| Reduced Pomc mRNA local | phenotype |
| reduced tail chasing behavior local | phenotype |
| reduced telomere length local | phenotype |
| Reduced transcription factor binding local | phenotype |
| Reln | gene |
| ribosomal RNA gene local | gene |
| ribosomal RNA gene promoter local | variant |
| Risk of incarceration local | phenotype |
| rodents | cohort |
| rs1360780 | variant |
| schizophrenia | phenotype |
| SCHIZOPHRENIA_LIKE_PHENOTYPE local | phenotype |
| second-hit local | drug |
| Second trimester local | cohort |
| severe maltreatment local | phenotype |
| sex | phenotype |
| Sex-dependent effects local | phenotype |
| single-sex litter local | cohort |
| Slc17a6 | gene |
| SLC6A4 | gene |
| smaller embryos local | phenotype |
| social approach | phenotype |
| SOCIAL_APPROACH local | phenotype |
| social functioning | phenotype |
| spatial memory | phenotype |
| sperm miRNA local | drug |
| Stem cell population local | cohort |
| stress | phenotype |
| Stress during pregnancy local | phenotype |
| stress exposure | phenotype |
| stressful life events | phenotype |
| Stress hyporesponsive period local | phenotype |
| stress-induced pathology local | phenotype |
| stressor local | drug |
| Stress-related pathology local | phenotype |
| stress response | phenotype |
| striatal dysfunction local | phenotype |
| striatum | anatomy |
| substance abuse | phenotype |
| substance use | phenotype |
| suicide | phenotype |
| suicide completers with abuse history local | cohort |
| suicide completers without abuse history local | cohort |
| suicide victims local | phenotype |
| suicide victims with childhood abuse history local | cohort |
| suicide victims without childhood abuse history local | cohort |
| tail chasing behavior local | phenotype |
| telomere length | phenotype |
| teratogen local | drug |
| teratogens local | drug |
| Tet1 | gene |
| TET family local | gene |
| Third trimester local | cohort |
| Third trimester-equivalent alcohol exposure local | cohort |
| Three month old infants local | cohort |
| Toxic stress local | drug |
| Toxic stress exposure local | phenotype |
| Tutsi genocide cohort local | cohort |
| Umbilical cord leukocytes local | cohort |
| US population | cohort |
| Valproic acid | drug |
| VALPROIC_ACID local | drug |
| variable maternal stress local | phenotype |
| vasopressin | drug |
| ventral hippocampus | anatomy |
| Ventricular defects local | phenotype |
| vertebral and digit malformations local | phenotype |
| Vertebral malformations local | phenotype |
| vGLUT2 | gene |
| War-exposed mothers local | cohort |
| whole brain | anatomy |
| Whole embryo culture paradigm local | cohort |
| whole prefrontal cortex local | anatomy |
| zebularine local | drug |
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In this knowledge base
| Title | Year | PMID |
|---|---|---|
| Genetics of Alcohol Use Disorder: A Role for Induced Pluripotent Stem Cells? | 2018 | 29897633 |
External
| Title | Authors | Journal | Year | Link |
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| Anxiety, Depression, and Emotional Dysregulation Following Prenatal Substance Exposure. | Diaz MR et al. | — | 2026 | → |
| Research progress of DNA methylation on the regulation of substance use disorders and the mechanisms. | Liu Y et al. | — | 2025 | → |
| DNA Methylation in Alcohol Use Disorder. | Zheng Q et al. | — | 2023 | → |
| Epigenetics and Neuroinflammation Associated With Neurodevelopmental Disorders: A Microglial Perspective. | Komada M et al. | — | 2022 | → |
| DNA methylation at GRIN2B partially mediates the association between prenatal bisphenol F exposure and cognitive functions in 7-year-old children in the SELMA study. | Engdahl E et al. | — | 2021 | → |
| Nutrition and cognition across the lifetime: an overview on epigenetic mechanisms. | Polverino A et al. | — | 2021 | → |
| Early Developmental Stress Affects Subsequent Gene Expression Response to an Acute Stress in Atlantic Salmon: An Approach for Creating Robust Fish for Aquaculture? | Robinson NA et al. | — | 2019 | → |
| Environmental stressors and alcoholism development: Focus on molecular targets and their epigenetic regulation. | Pucci M et al. | — | 2019 | → |
| How alcohol drinking affects our genes: an epigenetic point of view. | Ciafrè S et al. | — | 2019 | → |
| Recent advances in fetal alcohol spectrum disorder for mental health professionals. | Mela M et al. | — | 2019 | → |
| Genetics of Alcohol Use Disorder: A Role for Induced Pluripotent Stem Cells? | Prytkova I et al. | — | 2018 | → |
| Insights from epigenetic studies on human health and evolution. | Mulligan CJ | — | 2018 | → |
| Intergenerational transmission of trauma effects: putative role of epigenetic mechanisms. | Yehuda R et al. | — | 2018 | → |