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Epigenetic Transgenerational Inheritance.

Joan Blanco Rodríguez1, Cristina Camprubí Sánchez2,3,4

  • 1Genetics of Male Fertility Group, Unitat de Biologia Cel·lular (Facultat de Biociències), Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), Spain. joan.blanco@uab.cat.

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Summary
This summary is machine-generated.

The sperm epigenome undergoes resetting but retains information, influenced by environmental factors. This paternal epigenetic signature can be transmitted to offspring, impacting embryo development.

Keywords:
ChromatinDNA methylationEpigenomeNoncoding RNASpermatozoaTransgenerational inheritance

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Area of Science:

  • Epigenetics
  • Sperm epigenome
  • Paternal inheritance

Background:

  • Epigenetic information involves heritable gene expression changes without altering DNA sequence.
  • Epigenetic mechanisms include DNA methylation, histone modifications, and noncoding RNAs, regulating chromatin structure.
  • The sperm epigenome undergoes significant reprogramming during male life, influencing cell totipotency and preventing epimutation transmission.

Purpose of the Study:

  • To explore the transmission of epigenetic information from fathers to offspring via spermatozoa.
  • To investigate the association between sperm epigenome variations and environmental factor exposure.
  • To present evidence on how epigenetic mechanisms transfer paternal environmental information.

Main Methods:

  • Review of existing data on sperm epigenome reprogramming and environmental influences.
  • Analysis of evidence supporting the transmission of epigenetic information through sperm.
  • Examination of the plasticity of the sperm epigenetic signature.

Main Results:

  • Not all epigenetic regions are erased during reprogramming, indicating potential transmission of epigenetic information.
  • The sperm epigenome is sensitive to environmental factors during gamete differentiation.
  • Variations in the sperm epigenome are associated with environmental exposures.

Conclusions:

  • Epigenetic information can be transmitted from fathers to offspring through the sperm epigenome.
  • Environmental factors can alter the sperm epigenome, potentially transferring paternal environmental information.
  • The sperm epigenome's plasticity suggests its role in mediating paternal environmental influences on offspring development.