Epidermal growth factor is a neuronal differentiation factor for retinal stem cells in vitro

Détails

ID Serval
serval:BIB_CE637A4CBEE4
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Epidermal growth factor is a neuronal differentiation factor for retinal stem cells in vitro
Périodique
Stem Cells
Auteur⸱e⸱s
Angenieux  B., Schorderet  D. F., Arsenijevic  Y.
ISSN
1066-5099 (Print)
Statut éditorial
Publié
Date de publication
03/2006
Volume
24
Numéro
3
Pages
696-706
Notes
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: Mar
Résumé
Stem cells are a tool for in vitro elucidation of the putative role of factors on cell fate. Herein we analyze the role of epidermal growth factor (EGF) on progeny derived from retinal stem cells (RSCs). We isolated cells from neuroretinas of neonate mice. All the proliferating cells harbored the radial glia marker RC2, expressed transcription factors usually found in radial glia (Mash1, Pax6), and met the criteria of stem cells: high capacity of expansion, maintenance of an undifferentiated state, and multipotency demonstrated by clonal analysis. We analyzed the differentiation 7 days after transfer of the cells in different culture media. In absence of serum, EGF led to the expression of the neuronal marker beta-tubulin-III and acquisition of neuronal morphology in 15% of the cells. Analysis of cell proliferation by bromodeoxyuridine incorporation revealed that EGF mainly induced the formation of neurons without stimulating cell cycle progression. Moreover, a pulse of 2-hour EGF stimulation was sufficient to induce neuronal differentiation. Some neurons were committed to the retinal ganglion cell (RGC) phenotype, as revealed by the expression of retinal ganglion markers (Ath5, Brn3b, and melanopsin) and in a few cases to other retinal phenotypes (photoreceptors [PRs] and bipolar cells). We confirmed that the late RSCs were not restricted over time and that they conserved their multipotency by generating retinal phenotypes that usually appear at early (RGC) or late (PRs) developmental stages. Our results show that EGF is not only a factor controlling glial development, as previously shown, but also a potent differentiation factor for retinal neurons, at least in vitro.
Mots-clé
Animals Animals, Newborn Antigens, Differentiation/biosynthesis Cell Differentiation/*drug effects/physiology Cells, Cultured Epidermal Growth Factor/metabolism/*pharmacology Gene Expression Regulation/*drug effects/physiology Humans Mice Neuroglia/cytology/physiology Retinal Ganglion Cells/cytology/*physiology Stem Cells/cytology/*physiology
Pubmed
Web of science
Open Access
Oui
Création de la notice
28/01/2008 12:58
Dernière modification de la notice
20/08/2019 15:48
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