Quality and quantity control of gene expression by nonsense-mediated mRNA decay

By Tatsuaki Kurosaki, M. W. Popp, L. Maquat. Nature reviews. Molecular cell biology, 2019

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Nonsense-mediated mRNA decay (NMD) is one of the best characterized and most evolutionarily conserved cellular quality control mechanisms. Although NMD was first found to target one-third of mutated, disease-causing mRNAs, it is now known to also target ~10% of unmutated mammalian mRNAs to facilitate appropriate cellular responses — adaptation, differentiation or death — to environmental changes. Mutations in NMD genes in humans are associated with intellectual disability and cancer. In this Review, we discuss how NMD serves multiple purposes in human cells by degrading both mutated mRNAs to protect the integrity of the transcriptome and normal mRNAs to control the quantities of unmutated transcripts. Nonsense-mediated mRNA decay (NMD) is a quality and quantity control mechanism for degrading mutated mRNAs to protect the integrity of the transcriptome and proteome and unmutated mRNAs to control their quantity. NMD dysfunction in humans is associated with intellectual disability and cancer.

Subfields: Molecular Biology

View Paper: https://www.semanticscholar.org/paper/988ba7fbbc350c5eb12824def064d44100084f62