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Epigenetics and autism.

Tafari Mbadiwe1, Richard M Millis

  • 1Department of Physiology & Biophysics, The Howard University College of Medicine, Washington, DC 20059, USA.

Autism Research and Treatment
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Summary
This summary is machine-generated.

Epigenetic mechanisms targeting DNA-histone interactions offer potential autism therapies. These mechanisms may explain male predominance and aberrant social behaviors in autism spectrum disorder.

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Area of Science:

  • Neuroscience
  • Genetics
  • Epigenetics

Background:

  • Autism spectrum disorder (ASD) is a complex neurodevelopmental condition with unclear etiology.
  • Epigenetic modifications, such as DNA methylation and histone alterations, play crucial roles in gene expression regulation.
  • Understanding these epigenetic mechanisms could reveal novel therapeutic targets for ASD.

Purpose of the Study:

  • To review epigenetic mechanisms influencing gene expression relevant to autism.
  • To identify potential epigenetic therapeutic targets for autism spectrum disorder.

Main Methods:

  • Review of literature on DNA-histone interactions and gene expression in autism.
  • Analysis of epigenetic modifications including DNA methyltransferases (DNMTs), histone modifications, and their relation to autism characteristics.
  • Exploration of mechanisms potentially explaining male predominance and social interaction deficits in ASD.

Main Results:

  • DNA methyltransferases (DNMTs) and histone modifications are implicated in regulating genes relevant to autism.
  • Androgen-receptor (AR) dependent gene overactivation and DNMT-mediated methylation of oxytocin receptors may contribute to male predominance and aberrant socialization.
  • Dysregulation of histone methyltransferases, histone deacetylases (HDACs), and methyl CpG binding protein-2 affects chromatin condensation and gene silencing in the frontal cortex, potentially leading to decreased interconnectivity.

Conclusions:

  • Epigenetic mechanisms involving DNA-histone interactions are potential targets for autism therapeutics.
  • These mechanisms may underlie key autism features, including male predominance, social interaction deficits, and frontal cortex dysfunction.
  • Targeting these epigenetic pathways could offer novel strategies for autism prevention and treatment.