1
|
Arlet JB, Ribeil JA, Guillem F, Hermine O, Courtois G. [HSP70 regulates ineffective erythropoiesis in beta-thalassaemia]. Med Sci (Paris) 2015; 31:9-11. [PMID: 25658720 DOI: 10.1051/medsci/20153101002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Jean-Benoît Arlet
- Service de médecine interne, faculté de médecine Paris Descartes, Sorbonne Paris-Cité et Assistance publique-hôpitaux de Paris, hôpital européen Georges Pompidou, 20, rue Leblanc, 75015 Paris, France - Centre national de référence des syndromes drépanocytaires majeurs - laboratoire Inserm UMR 1163, CNRS ERL 8254, institut Imagine, hôpital Necker, laboratoire d'excellence sur le globule rouge (GR-Ex)
| | - Jean-Antoine Ribeil
- Centre national de référence des syndromes drépanocytaires majeurs - laboratoire Inserm UMR 1163, CNRS ERL 8254, institut Imagine, hôpital Necker, laboratoire d'excellence sur le globule rouge (GR-Ex) - département de biothérapie, faculté de médecine Paris Descartes, Sorbonne Paris-Cité et Assistance publique-hôpitaux de Paris, hôpital Necker, Paris, France
| | - Flavia Guillem
- laboratoire Inserm UMR 1163, CNRS ERL 8254, institut Imagine, hôpital Necker, laboratoire d'excellence sur le globule rouge (GR-Ex)
| | - Olivier Hermine
- laboratoire Inserm UMR 1163, CNRS ERL 8254, institut Imagine, hôpital Necker, laboratoire d'excellence sur le globule rouge (GR-Ex) - service d'hématologie adulte, faculté de médecine Paris Descartes, Sorbonne Paris-Cité et Assistance publique-hôpitaux de Paris, hôpital Necker, Paris, France
| | - Geneviève Courtois
- laboratoire Inserm UMR 1163, CNRS ERL 8254, institut Imagine, hôpital Necker, laboratoire d'excellence sur le globule rouge (GR-Ex)
| |
Collapse
|
2
|
Nguyen-Lefebvre AT, Leprun G, Morin V, Viñuelas J, Couté Y, Madjar JJ, Gandrillon O, Gonin-Giraud S. V-erbA generates ribosomes devoid of RPL11 and regulates translational activity in avian erythroid progenitors. Oncogene 2013; 33:1581-9. [PMID: 23563180 DOI: 10.1038/onc.2013.93] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 01/17/2013] [Accepted: 01/25/2013] [Indexed: 01/21/2023]
Abstract
The v-erbA oncogene transforms chicken erythrocytic progenitors (T2EC) by blocking their differentiation and freezing them in a state of self-renewal. Transcriptomes of T2EC, expressing either v-erbA or a non-transforming form of v-erbA (S61G), were compared using serial analysis of gene expression and some, but not all, mRNA-encoding ribosomal proteins were seen to be affected by v-erbA. These results suggest that this oncogene could modulate the composition of ribosomes. In the present study, we demonstrate, using two-dimensional difference in gel electrophoresis, that v-erbA-expressing cells have a lower amount of RPL11 associated with the ribosomes. The presence of ribosomes devoid of RPL11 in v-erbA-expressing cells was further confirmed by immunoprecipitation. In order to assess the possible impact of these specialized ribosomes on the translational activity, we analyzed proteomes of either v-erbA or S61G-expressing cells using 2D/mass spectrometry, and identified nine proteins present in differing amounts within these cells. Among these proteins, we focused on HSP70 because of its involvement in erythroid differentiation. Our results indicate that, in v-erbA-expressing cells, hsp70 is not only transcribed but also translated more efficiently, as shown by polyribosome fractionation experiments. We demonstrate here, for the first time, the existence of ribosomes with different protein components, notably ribosomes devoid of RPL11, and a regulation of mRNA translation depending on v-erbA oncogene expression.
Collapse
Affiliation(s)
- A T Nguyen-Lefebvre
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, CNRS UMR 5534, Université de Lyon, Université Lyon1, Villeurbanne Cedex, France
| | - G Leprun
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, CNRS UMR 5534, Université de Lyon, Université Lyon1, Villeurbanne Cedex, France
| | - V Morin
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, CNRS UMR 5534, Université de Lyon, Université Lyon1, Villeurbanne Cedex, France
| | - J Viñuelas
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, CNRS UMR 5534, Université de Lyon, Université Lyon1, Villeurbanne Cedex, France
| | - Y Couté
- 1] CEA, IRTSV, Laboratoire Biologie à Grande Echelle, Grenoble, France [2] INSERM, U1038, Grenoble, France [3] Université Joseph Fourier, Grenoble 1, Grenoble, France
| | - J-J Madjar
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, CNRS UMR 5534, Université de Lyon, Université Lyon1, Villeurbanne Cedex, France
| | - O Gandrillon
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, CNRS UMR 5534, Université de Lyon, Université Lyon1, Villeurbanne Cedex, France
| | - S Gonin-Giraud
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, CNRS UMR 5534, Université de Lyon, Université Lyon1, Villeurbanne Cedex, France
| |
Collapse
|
3
|
Dijon M, Chabannon C, Tonnelle C. Ikaros, facteur de transcription impliqué, aussi, dans l’érythropoïèse. Med Sci (Paris) 2008; 24:1065-70. [DOI: 10.1051/medsci/200824121065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|