Issue |
Med Sci (Paris)
Volume 31, Number 6-7, Juin–Juillet 2015
|
|
---|---|---|
Page(s) | 622 - 628 | |
Section | M/S Revues | |
DOI | https://doi.org/10.1051/medsci/20153106015 | |
Published online | 07 July 2015 |
Qu’en est-il de la biogenèse des ribosomes chez l’homme ?
About the ribosomal biogenesis in human
Laboratoire de biologie cellulaire, institut de recherche en biosciences, université de Mons, place du Parc 20, 7000
Mons, Belgique
*
lionel.tafforeau@umons.ac.be
Le ribosome est requis dans un mécanisme fondamental pour toute cellule, la traduction de l’information génétique en protéines. La biogenèse du ribosome est un processus très complexe qui nécessite un grand nombre d’étapes de maturation (synthèse, clivages et modifications des ARN ribosomiques précurseurs dans le nucléole, assemblage avec les protéines ribosomiques, export des sous-unités vers le cytoplasme). Des études récentes soulignent les limites de l’utilisation de la levure pour étudier la biogenèse du ribosome et appréhender la formation des ribosomes chez l’homme et, en particulier, les défauts de synthèse qui caractérisent les ribosomopathies.
Abstract
Ribosomes are cellular ribonucleoprotein particles required for a fundamental mechanism, translation of the genetic information into proteins. Ribosome biogenesis is a highly complex pathway involving many maturation steps: ribosomal RNA (rRNA) synthesis, rRNA processing, pre-rRNA modifications, its assembly with ribosomal proteins in the nuceolus, export of the subunit precursors to the nucleoplasm and the cytoplasm. Ribosome biogenesis has mainly being investigated in yeast during these last 25 years. However, recent works have shown that, despite many similarities between yeast and human ribosome structure and biogenesis, human pre-rRNA processing is far more complex than in yeast. In order to better understand diseases related to a malfunction in ribosome synthesis, the ribosomopathies, research should be conducted directly in human cells and animal models.
© 2015 médecine/sciences – Inserm
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.