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© Research
Publication : eLife

GC content shapes mRNA storage and decay in human cells.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in eLife - 19 Dec 2019

Courel M, Clément Y, Bossevain C, Foretek D, Vidal Cruchez O, Yi Z, Bénard M, Benassy MN, Kress M, Vindry C, Ernoult-Lange M, Antoniewski C, Morillon A, Brest P, Hubstenberger A, Roest Crollius H, Standart N, Weil D,

Link to Pubmed [PMID] – 31855182

Link to DOI – 10.7554/eLife.49708e49708

Elife 2019 12; 8():

mRNA translation and decay appear often intimately linked although the rules of this interplay are poorly understood. In this study, we combined our recent P-body transcriptome with transcriptomes obtained following silencing of broadly acting mRNA decay and repression factors, and with available CLIP and related data. This revealed the central role of GC content in mRNA fate, in terms of P-body localization, mRNA translation and mRNA stability: P-bodies contain mostly AU-rich mRNAs, which have a particular codon usage associated with a low protein yield; AU-rich and GC-rich transcripts tend to follow distinct decay pathways; and the targets of sequence-specific RBPs and miRNAs are also biased in terms of GC content. Altogether, these results suggest an integrated view of post-transcriptional control in human cells where most translation regulation is dedicated to inefficiently translated AU-rich mRNAs, whereas control at the level of 5′ decay applies to optimally translated GC-rich mRNAs.

https://pubmed.ncbi.nlm.nih.gov/31855182