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[Advances in the roles and mechanisms of nonsense-mediated mRNA decay in embryonic development]

Li-Na Xuan1, Xi-Ya Shen1, Peng Wang1

  • 1Institute of Neuroscience, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou 325035, China.

Sheng Li Xue Bao : [Acta Physiologica Sinica]
|April 23, 2019
PubMed

Insights

Nonsense-mediated mRNA decay (NMD) surveillance degrades aberrant mRNAs and regulates normal transcripts. This conserved mechanism is crucial for embryonic development, impacting stem cell functions and overall development.

Area of Science:

  • Molecular Biology
  • Developmental Biology
  • Genetics

Background:

  • Nonsense-mediated mRNA decay (NMD) is a conserved surveillance pathway that degrades aberrant mRNAs containing premature termination codons (PTCs).
  • Emerging evidence indicates NMD also regulates the turnover of functional mRNAs, impacting diverse cellular processes.
  • NMD influences a significant portion of the transcriptome, essential for homeostasis, stress response, proliferation, and differentiation.

Purpose of the Study:

  • To review the latest advancements in understanding the roles and mechanisms of NMD in embryonic development.
  • To highlight NMD's critical functions in embryonic stem cell self-renewal and differentiation.
  • To provide insights for research into embryonic development and related diseases.

Main Methods:

  • Literature review of recent studies on NMD.
  • Analysis of NMD's impact on gene expression during embryonic development.
  • Examination of NMD factor roles in embryonic lethality and stem cell biology.

Main Results:

  • NMD is essential for embryonic development, with single knockout of most NMD factors leading to embryonic lethality.
  • NMD regulates transcripts involved in development and plays a key role in embryonic stem cell self-renewal and differentiation.
  • NMD's influence extends to 3-20% of the transcriptome, underscoring its broad regulatory role.

Conclusions:

  • NMD is a vital post-transcriptional regulatory mechanism in eukaryotes, indispensable for normal embryonic development.
  • Dysregulation of NMD can contribute to embryonic development-related diseases.
  • Further research into NMD mechanisms offers potential therapeutic strategies for developmental disorders.

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