Mouse adult hematopoietic stem cells actively synthetize ribosomal RNA - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue RNA Année : 2018

Mouse adult hematopoietic stem cells actively synthetize ribosomal RNA

Résumé

Contribution of basal cellular processes to the regulation of tissue homeostasis has just started to be appreciated. However, our knowledge on the modulation of ribosome biogenesis activity in situ within specific lineages remains very limited. This is largely due to the lack of assays that enable quantitation of ribosome biogenesis in small numbers of cells in vivo. We used a technique, named Flow-FISH, combining cell surface antibody staining and flow cytometry with intracellular ribosomal RNA (rRNA) FISH, to measure the levels of pre-rRNAs of hematopoietic cells in vivo. Here, we show that Flow-FISH reports and quantifies ribosome biogenesis activity in hematopoietic cell populations, thereby providing original data on this fundamental process notably in rare populations such as hematopoietic stem and progenitor cells. We unravel variations in pre-rRNA levels between different hematopoietic progenitor compartments and during erythroid differentiation. In particular, our data indicate that, contrary to what may be anticipated from their quiescent state, hematopoietic stem cells have significant ribosome biogenesis activity. Moreover, variations in pre-rRNA levels do not correlate with proliferation rate suggesting that cell type specific mechanisms might regulate ribosome biogenesis in hematopoietic stem cells and progenitors. Our study contributes to a better understanding of the cellular physiology of the hematopoietic system in vivo in unperturbed situation.

Domaines

Immunologie
Fichier principal
Vignette du fichier
RNA-2018-Jarzebowski-1803-12.pdf (1.24 Mo) Télécharger le fichier
Loading...

Dates et versions

pasteur-01921130 , version 1 (13-11-2018)

Licence

Paternité - Pas d'utilisation commerciale - Partage selon les Conditions Initiales

Identifiants

Citer

Léonard Jarzebowski, Marie Le Bouteiller, Sabrina Coqueran, Aurélien Raveux, Sandrine Vandormael-Pournin, et al.. Mouse adult hematopoietic stem cells actively synthetize ribosomal RNA. RNA, 2018, 24 (12), pp.1803-1812. ⟨10.1261/rna.067843.118⟩. ⟨pasteur-01921130⟩
69 Consultations
90 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More