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Imprinted gene expression in the brain.

William Davies1, Anthony R Isles, Lawrence S Wilkinson

  • 1Neurobiology and Developmental Genetics Programmes, The Babraham Institute, Babraham, Cambridge CB2 4AT, UK.

Neuroscience and Biobehavioral Reviews
|April 12, 2005
PubMed
Summary
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Imprinted genes, expressed from only one parent, significantly impact brain development and behavior. Further research is needed to understand their role in mental disorders and evolutionary origins.

Area of Science:

  • Genetics
  • Neuroscience
  • Developmental Biology

Background:

  • Autosomal genes are typically expressed equally from both parental alleles.
  • Imprinted genes exhibit parent-of-origin-specific allele expression, with either maternal or paternal silencing.
  • Imprinted genes are crucial for development, growth, and increasingly recognized for their role in brain function.

Purpose of the Study:

  • To review the literature on imprinted gene expression in the brain.
  • To identify organizational themes in imprinted gene expression patterns (maternal vs. paternal).
  • To highlight the role of imprinted genes in neurodevelopment and discuss current knowledge gaps.

Main Methods:

  • Literature review of studies on imprinted gene expression in mammalian brains.

Related Experiment Videos

  • Analysis of expression patterns based on parental origin (maternal or paternal).
  • Synthesis of findings related to neurodevelopmental roles and evolutionary theories.

    • Main Results:

    • Imprinted genes show parent-specific expression biases in the brain.
    • Evidence suggests a significant role for imprinted genes in neurodevelopment.
    • The precise functions and contributions to mental disorders remain largely unknown.

    Conclusions:

    • Imprinted genes are vital for brain function and neurodevelopment.
    • Understanding imprinted gene expression provides insights into evolutionary conflicts between parental genomes.
    • Significant questions remain regarding their role in common mental disorders and the broader theory of imprinting.