Hyperconserved Elements in Human 5'UTRs Shape Essential Post-transcriptional Regulatory Networks.
5cpsdummy′UTR
RBMX
RNA-binding proteins
homeobox
phylogenetic conservation
post-transcriptional regulation
regulatory networks
Journal
Frontiers in molecular biosciences
ISSN: 2296-889X
Titre abrégé: Front Mol Biosci
Pays: Switzerland
ID NLM: 101653173
Informations de publication
Date de publication:
2020
2020
Historique:
received:
29
02
2020
accepted:
05
08
2020
entrez:
2
10
2020
pubmed:
3
10
2020
medline:
3
10
2020
Statut:
epublish
Résumé
Post-transcriptional regulation (PTR) of gene expression is a powerful determinant of cellular phenotypes. The 5' and 3' untranslated regions of the mRNA (UTRs) mediate this role through sequence and secondary structure elements bound by RNA-binding proteins (RBPs) and non-coding RNAs. While functional regions in the 3'UTRs have been extensively studied, the 5'UTRs are still relatively uncharacterized. To fill this gap, we used a computational approach exploiting phylogenetic conservation to identify hyperconserved elements in human 5'UTRs (5'HCEs). Our assumption was that 5'HCEs would represent evolutionarily stable and hence important PTR sites. We identified over 5000 5'HCEs occurring in 10% of human protein-coding genes. These sequence elements are rather short and mostly found in narrowly-spaced clusters. 5'HCEs-containing genes are enriched in essential cellular functions and include 20% of all homeotic genes. Homeotic genes are essential transcriptional regulators, driving body plan and neuromuscular development. However, the role of PTR in their expression is mostly unknown. By integrating computational and experimental approaches we identified RBMX as the initiator RBP of a post-transcriptional cascade regulating many homeotic genes. This work thus establishes 5'HCEs as mediators of essential post-transcriptional regulatory networks.
Identifiants
pubmed: 33005630
doi: 10.3389/fmolb.2020.00220
pmc: PMC7484617
doi:
Types de publication
Journal Article
Langues
eng
Pagination
220Informations de copyright
Copyright © 2020 Zuccotti, Peroni, Potrich, Quattrone and Dassi.
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