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Organizing principles of mammalian nonsense-mediated mRNA decay

Maximilian Wei-Lin Popp1, Lynne E Maquat

  • 1Department of Biochemistry and Biophysics, School of Medicine and Dentistry, University of Rochester, Rochester, New York 14642;

Annual Review of Genetics
|November 27, 2013
PubMed

Insights

Nonsense-mediated mRNA decay (NMD) is a key cellular process that ensures transcriptome fidelity by degrading faulty messenger RNAs (mRNAs). This review explores NMD

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genetics

Background:

  • Cells rely on messenger RNAs (mRNAs) for accurate genetic information transfer.
  • Maintaining mRNA quality and quantity is crucial for cellular homeostasis and protein synthesis.
  • Posttranscriptional quality control mechanisms are essential for transcriptome fidelity.

Purpose of the Study:

  • To review nonsense-mediated mRNA decay (NMD) as a primary cytoplasmic mRNA quality control pathway.
  • To utilize protein quality control as a framework for understanding NMD.
  • To identify intersections between protein and mRNA quality control pathways and suggest future research directions.

Main Methods:

  • Literature review and conceptual synthesis.
  • Comparative analysis of polymer quality control pathways.
  • Framework development using protein quality control principles.

Main Results:

  • Nonsense-mediated mRNA decay (NMD) is the most understood posttranscriptional mRNA quality control mechanism.
  • Significant similarities exist between protein quality control and NMD pathways.
  • Protein quality control pathways offer insights into mRNA quality control mechanisms.

Conclusions:

  • NMD is vital for maintaining cellular homeostasis by ensuring mRNA quality.
  • The conceptual framework of protein quality control illuminates NMD mechanisms.
  • Further research into mRNA quality control can be guided by protein quality control principles.

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