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Forschungsdatenbank PMU-SQQUID

Pericytes Stimulate Oligodendrocyte Progenitor Cell Differentiation during CNS Remyelination.
De La Fuente, AG; Lange, S; Silva, ME; Gonzalez, GA; Tempfer, H; van Wijngaarden, P; Zhao, C; Di Canio, L; Trost, A; Bieler, L; Zaunmair, P; Rotheneichner, P; O"Sullivan, A; Couillard-Despres, S; Errea, O; Mäe, MA; Andrae, J; He, L; Keller, A; Bátiz, LF; Betsholtz, C; Aigner, L; Franklin, RJM; Rivera, FJ;
Cell Rep. 2017; 20(8): 1755-1764.
Originalarbeiten (Zeitschrift)

PMU-Autor/inn/en

Aigner Ludwig
Bieler Lara Sophie
Couillard-Després Sébastien
Lange Simona
Rivera Gomez-Barris Francisco J.
Tempfer Herbert
Zaunmair Pia
Zurl Andrea

Abstract

The role of the neurovascular niche in CNS myelin regeneration is incompletely understood. Here, we show that, upon demyelination, CNS-resident pericytes (PCs) proliferate, and parenchymal non-vessel-associated PC-like cells (PLCs) rapidly develop. During remyelination, mature oligodendrocytes were found in close proximity to PCs. In Pdgfb(ret/ret) mice, which have reduced PC numbers, oligodendrocyte progenitor cell (OPC) differentiation was delayed, although remyelination proceeded to completion. PC-conditioned medium accelerated and enhanced OPC differentiation in vitro and increased the rate of remyelination in an ex vivo cerebellar slice model of demyelination. We identified Lama2 as a PC-derived factor that promotes OPC differentiation. Thus, the functional role of PCs is not restricted to vascular homeostasis but includes the modulation of adult CNS progenitor cells involved in regeneration. Copyright © 2017 The Authors. Published by Elsevier Inc. All rights reserved.