NG2 and Olig2 Expression Provides Evidence for Phenotypic Deregulation of Cultured Central Nervous System and Peripheral Nervous System Neural Precursor Cells (original) (raw)

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INSERM U583, Physiopathologie et Thérapie des déficits sensoriels et moteurs, Institut des Neurosciences de Montpellier, Hôpital St ELOI

, Montpellier Cedex 05,

France

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INSERM U583, Physiopathologie et Thérapie des déficits sensoriels et moteurs, Institut des Neurosciences de Montpellier, Hôpital St ELOI

, Montpellier Cedex 05,

France

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INSERM U583, Physiopathologie et Thérapie des déficits sensoriels et moteurs, Institut des Neurosciences de Montpellier, Hôpital St ELOI

, Montpellier Cedex 05,

France

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Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences

, Myodaiji, Okazaki,

Japan

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INSERM U583, Physiopathologie et Thérapie des déficits sensoriels et moteurs, Institut des Neurosciences de Montpellier, Hôpital St ELOI

, Montpellier Cedex 05,

France

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INSERM U583, Physiopathologie et Thérapie des déficits sensoriels et moteurs, Institut des Neurosciences de Montpellier, Hôpital St ELOI

, Montpellier Cedex 05,

France

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INSERM U583, Physiopathologie et Thérapie des déficits sensoriels et moteurs, Institut des Neurosciences de Montpellier, Hôpital St ELOI

, Montpellier Cedex 05,

France

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INSERM U583, Physiopathologie et Thérapie des déficits sensoriels et moteurs, Institut des Neurosciences de Montpellier, Hôpital St ELOI

, Montpellier Cedex 05,

France

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INSERM U583, Physiopathologie et Thérapie des déficits sensoriels et moteurs, Institut des Neurosciences de Montpellier, Hôpital St ELOI

, Montpellier Cedex 05,

France

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Service Regional INSERM de cytométrie en flux

, Montpellier Cedex 05,

France

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Received:

10 November 2005

Accepted:

10 October 2006

Published:

19 October 2006

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Cecile Dromard, Sylvain Bartolami, Loïc Deleyrolle, Hirohide Takebayashi, Chantal Ripoll, Lionel Simonneau, Sylvie Prome, Sylvie Puech, Christophe Tran Van Ba, Christophe Duperray, Jean Valmier, Alain Privat, Jean-Philippe Hugnot, NG2 and Olig2 Expression Provides Evidence for Phenotypic Deregulation of Cultured Central Nervous System and Peripheral Nervous System Neural Precursor Cells, Stem Cells, Volume 25, Issue 2, February 2007, Pages 340–353, https://doi.org/10.1634/stemcells.2005-0556
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Abstract

Neural stem cells cultured with fibroblast growth factor 2 (FGF2)/epidermal growth factor (EGF) generate clonal expansions called neurospheres (NS), which are widely used for therapy in animal models. However, their cellular composition is still poorly defined. Here, we report that NS derived from several embryonic and adult central nervous system (CNS) regions are composed mainly of remarkable cells coexpressing radial glia markers (BLBP, RC2, GLAST), oligodendrogenic/neurogenic factors (Mash1, Olig2, Nkx2.2), and markers that in vivo are typical of the oligodendrocyte lineage (NG2, A2B5, PDGFR-α). On NS differentiation, the latter remain mostly expressed in neurons, together with Olig2 and Mash1. Using cytometry, we show that in growing NS the small population of multipotential self-renewing NS-forming cells are A2B5+ and NG2+. Additionally, we demonstrate that these NS-forming cells in the embryonic spinal cord were initially NG2− and rapidly acquired NG2 in vitro. NG2 and Olig2 were found to be rapidly induced by cell culture conditions in spinal cord neural precursor cells. Olig2 expression was also induced in astrocytes and embryonic peripheral nervous system (PNS) cells in culture after EGF/FGF treatment. These data provide new evidence for profound phenotypic modifications in CNS and PNS neural precursor cells induced by culture conditions.

Copyright © 2007 AlphaMed Press

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