Wnt-3a overcomes ?-amyloid toxicity in rat hippocampal neurons

Alvarez, A.R.; Godoy, J.A.; Mullendorff, K; Olivares G.H.; Bronfman, M; Inestrosa, N. C.

Keywords: proteins, apoptosis, ligands, neurons, rat, toxicity, survival, amyloid, animals, expression, phosphorylation, culture, rats, protein, cell, disease, stress, beta, synthase, tau, embryo, transduction, human, degeneration, agents, up-regulation, nerve, tissue, hippocampus, signal, beta-protein, drug, catenin, article, kinase, wnt, staphylococcus, alzheimer, function, cytoskeletal, glycogen, controlled, degenerative, animal, homeodomain, oxidative, phage, study, 3, priority, nonhuman, journal, Rats,, Sprague-Dawley, Cells,, Cultured, unclassified, Media,, Conditioned, 3A, Trans-Activators, 3beta, Neuroprotective, Wnt3a

Abstract

The aim of this study was to evaluate whether the direct activation of the Wnt signaling pathway by its endogenous Wnt-3a ligand prevents the toxic effects induced by amyloid-?-peptide (A?) in rat hippocampal neurons. We report herein that the Wnt-3a ligand was indeed able to overcome toxic effects induced by A? in hippocampal neurons, including a neuronal impairment on cell survival, an increase in glycogen synthase kinase-3? (GSK-3?) and tau phosphorylation, a decrease in cytoplasmic ?-catenin and a decrease in the expression of the Wnt target gene engrailed-1. We further demonstrate that Wnt-3a protects hippocampal neurons from apoptosis induced by A?. Our results support the hypothesis that a loss of function of Wnt signaling may play a role in the progression of neurodegenerative diseases such as Alzheimer's disease. © 2004 Elsevier Inc. All rights reserved.

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Título según SCOPUS: Wnt-3a overcomes ?-amyloid toxicity in rat hippocampal neurons
Título de la Revista: EXPERIMENTAL CELL RESEARCH
Volumen: 297
Número: 1
Editorial: ELSEVIER INC
Fecha de publicación: 2004
Página de inicio: 186
Página final: 196
Idioma: English
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-2942578107&partnerID=q2rCbXpz
DOI:

10.1016/j.yexcr.2004.02.028

Notas: SCOPUS