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[Research progress of epigenetic transgenerational phenotype].

Ma Kexue1, Ma Keshi2, Xi Xingzi3

  • 1College of Life Sciences, Henan Normal University, Xinxiang 453007, China.

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Epigenetic information can be passed across generations, escaping normal reprogramming. Environmental factors can influence this epigenetic transgenerational phenotype, impacting offspring health.

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Area of Science:

  • Epigenetics
  • Developmental Biology
  • Genetics

Context:

  • Epigenetic reprogramming occurs during gametogenesis and early embryogenesis.
  • Traditionally, epigenetic information was thought to be reset and not heritable across generations.
  • Emerging evidence suggests epigenetic memory can persist, challenging this dogma.

Purpose:

  • To introduce the concept of epigenetic transgenerational phenotype.
  • To discuss epigenetic reprogramming and its potential escape routes.
  • To explore the molecular mechanisms underlying transgenerational epigenetic inheritance.

Summary:

  • The epigenome, while undergoing significant reprogramming, may retain certain marks allowing for transgenerational inheritance.
  • Environmental factors like chemicals, nutrition, and behavior can alter the epigenome.
  • These alterations can potentially be transmitted across generations, influencing offspring phenotypes.

Impact:

  • Provides a framework for understanding how environmental exposures can have long-term, intergenerational effects.
  • Highlights the role of epigenetic mechanisms in mammalian inheritance beyond DNA sequence.
  • Suggests potential links between environmental factors and transgenerational diseases, opening new avenues for research and prevention.