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Related Experiment Videos

Genome imprinting and development in the mouse.

M A Surani1, R Kothary, N D Allen

  • 1Department of Molecular Embryology, Institute of Animal Physiology & Genetics Research, Babraham, Cambridge, UK.

Development (Cambridge, England). Supplement
|January 1, 1990
PubMed
Summary
This summary is machine-generated.

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Genome imprinting regulates mammalian development by differential allele expression. Androgenones (AG) and parthenogenones (PG) reveal distinct developmental roles and tissue contributions, highlighting imprinted gene critical functions.

Area of Science:

  • Developmental Biology
  • Epigenetics
  • Genetics

Background:

  • Mammalian development is regulated by genome imprinting, a process of differential gene expression from maternal and paternal alleles.
  • Epigenetic modifications initiated in the germline and post-fertilization influence gene imprinting, affecting embryonic growth, proliferation, and differentiation.

Purpose of the Study:

  • To investigate the distinct developmental roles and tissue contributions of androgenones (AG) and parthenogenones (PG) in mammalian development.
  • To elucidate the impact of imprinted genes on embryonic and extraembryonic tissues and their cellular behaviors.

Main Methods:

  • Analysis of androgenones (AG) and parthenogenones (PG) in mammalian development.
  • Comparative study of AG and PG cell contributions to embryonic and extraembryonic tissues in chimeras.

Related Experiment Videos

  • Genetic studies to identify critical imprinted genes influencing development.

    • Main Results:

    • Androgenones (AG) promote growth and exhibit higher proliferation rates, while parthenogenones (PG) cause growth retardation in chimeras.
    • AG cells contribute significantly to mesodermal derivatives, whereas PG cells are enriched in ectodermal derivatives.
    • PG cells are exempt from selection in germlines, while AG cells are less prone to elimination in somatic tissues.

    Conclusions:

    • Imprinted genes play critical roles in mammalian development, influencing tissue-specific contributions and cellular dynamics.
    • The complementary phenotypes of AG and PG highlight the essential balance of parental genomes in development.
    • Understanding imprinted gene function is crucial for deciphering developmental processes and potential abnormalities.