Wnt-5 alpha increases NO and modulates NMDA receptor in rat hippocampal neurons

Muñoz FJ.; Godoy JA; Cerpa, W.; Poblete IM; Huidobro-Toro, JP; Inestrosa, NC

Abstract

Wnt signaling has a crucial role in synaptic function at the central nervous system. Here we evaluate whether Wnts affect nitric oxide (NO) generation in hippocampal neurons. We found that noncanonical Wnt-5a triggers NO production; however, Wnt-3a a canonical ligand did not exert the same effect. Co-administration of Wnt-5a with the soluble Frizzled related protein-2 (sFRP-2) a Wnt antagonist blocked the NO production. Wnt-5a activates the non-canonical Wnt/Ca2+ signaling through a mechanism that depends on Ca2+ release from Ryanodine-sensitive internal stores. The increase in NO levels evoked by Wnt-5a promotes the insertion of the GluN2B subunit of the NMDA receptor (NMDAR) into the neuronal cell surface. To the best of our knowledge, this is the first time that Wnt-5a signaling is related to NO production, which in turn increases NMDARs trafficking to the cell surface. (C) 2014 Elsevier Inc. All rights reserved.

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Título según WOS: Wnt-5 alpha increases NO and modulates NMDA receptor in rat hippocampal neurons
Título de la Revista: BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
Volumen: 444
Número: 2
Editorial: Elsevier
Fecha de publicación: 2014
Página de inicio: 189
Página final: 194
Idioma: English
DOI:

10.1016/j.bbrc.2014.01.031

Notas: ISI