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Différenciation neurale des cellules souches embryonnaires

Abstract : Pluripotent murine embryonic stem (ES) cells can differentiate into all cell types both in vivo and in vitro. Based on their capability to proliferate and differentiate, these ES cells appear as a very promising tool for cell therapy. The understanding of the molecular mechanisms underlying the neural differentiation of the ES cells is a pre-requisite for selecting adequately the cells and conditions which will be able to correctly repair damaged brain and restore altered cognitive functions. Different methods allow obtaining neural cells from ES cells. Most of the techniques differentiate ES cells by treating embryoid bodies in order to keep an embryonic organization. More recent techniques, based on conditioned media, induce a direct differentiation of ES cells into neural cells, without going through the step of embryonic bodies. Beyond the fact that these techniques allow obtaining large numbers of neural precursors and more differentiated neural cells, these approaches also provide valuable information on the process of differentiation of ES cells into neural cells. Indeed, sequential studies of this process of differentiation have revealed that globally ES cells differentiating into neural cells in vitro recapitulate the molecular events governing the in vivo differentiation of neural cells. Altogether these data suggest that murine ES cells remain a highly valuable tool to obtain large amounts of precursor and differentiated neural cells as well as to get a better understanding of the mechanisms of neural differentiation, prior to a potential move towards the use of human ES cells in therapy.
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Submitted on : Tuesday, October 17, 2006 - 11:53:30 AM
Last modification on : Saturday, March 28, 2020 - 2:24:53 AM
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  • HAL Id : inserm-00107049, version 1
  • PUBMED : 15885197



Michèle Cazillis, Vincent Lelièvre, Pierre Gressens. Différenciation neurale des cellules souches embryonnaires. médecine/sciences, EDP Sciences, 2005, 21 (5), pp.484-90. ⟨inserm-00107049⟩



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