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Regulation of stem cell proliferation and differentiation by endothelial cells

Objectif

Stem cells have the ability to both, self renew and differentiate into different cell types, what enables them to regenerate and repair tissues and organs. There are specialized niches of stem cells in the adult mammalian brain. Neural stem cells (NSC) are around blood vessels and it has been recently described that endothelial cells are able to regulate the proliferation, self-renewal and the induction of these NSC to neurons in vitro. This interplay could also result in increased angiogenesis because it h as recently been reported that NSCs are able to differenciate into endothelial cells. Moreover, the replenishment of the NSC niche with stem cells from the bone marrow can be regulated by endothelial cells. VEGF is a chemotatic cue for the migration of und ifferentiated neural progenitors, offering a mechanistic link between neurogenesis and angiogenesis in the nervous system. In the present work we will define the nature of the interactions between NSC and endothelial cells in the NSC niche, evaluating the role of the endothelium in the regulation of the NSC niche in vivo and identifying molecules involved. In order to determine whether blood vessels within the NSC niche serve as conduits for the circulating cells that replenish the niche we will determinate the fate, the origin and the mechanism of engrafted cells. Understanding the stem cell niche will provide a framework for the elucidation of stem cell function and regulation. In addition, it will provide us with valuable tools for adult stem cell therapy . The present project focuses on the role of vasculature as regulator of stem cell homeostasis and function.

Champ scientifique (EuroSciVoc)

Mots‑clés

Thème(s)

Appel à propositions

FP6-2004-MOBILITY-5
Voir d’autres projets de cet appel

Régime de financement

EIF - Marie Curie actions-Intra-European Fellowships

Coordinateur

MEDICAL RESEARCH COUNCIL
Contribution de l’UE
Aucune donnée
Coût total
Aucune donnée