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Sperm RNA Payload: Implications for Intergenerational Epigenetic Inheritance.

Simeiyun Liu1, Upasna Sharma1

  • 1Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, CA 95064, USA.

International Journal of Molecular Sciences
|March 29, 2023
PubMed
Summary
This summary is machine-generated.

Paternal environmental exposures can alter offspring traits through epigenetic changes in sperm, particularly via small RNAs. These small RNAs may regulate early embryonic gene expression, influencing inherited phenotypes across generations.

Keywords:
epigeneticsinheritancesmall RNAssperm

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Area of Science:

  • Epigenetics
  • Developmental Biology
  • Genetics

Background:

  • Parental environmental factors can influence offspring phenotypes across generations.
  • Epigenetic modifications in gametes are a potential mechanism for transmitting these effects.
  • Small RNAs are increasingly recognized for their role in intergenerational inheritance.

Purpose of the Study:

  • To review evidence for transgenerational inheritance of paternal environmental effects.
  • To explore the role of small RNAs in mediating these effects.
  • To discuss mechanisms of sperm small RNA-mediated inheritance.

Main Methods:

  • Literature review of studies on paternal environmental effects and inheritance.
  • Analysis of research on sperm small RNA content and environmental modulation.
  • Discussion of proposed mechanisms for small RNA-mediated gene regulation in early embryos.

Main Results:

  • Evidence supports the inheritance of paternal environmental effects on offspring phenotypes.
  • Sperm small RNA profiles are modulated by environmental conditions.
  • Sperm small RNAs are implicated in regulating embryonic gene expression.

Conclusions:

  • Paternal environmental exposures can induce heritable epigenetic changes via sperm small RNAs.
  • Sperm small RNAs represent a key mechanism for transmitting paternal environmental information.
  • Understanding this pathway is crucial for comprehending offspring phenotype development.