Role of the JNK pathway in NMDA-mediated excitotoxicity of cortical neurons.

Détails

ID Serval
serval:BIB_22C08349A3CE
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Role of the JNK pathway in NMDA-mediated excitotoxicity of cortical neurons.
Périodique
Cell Death and Differentiation
Auteur⸱e⸱s
Centeno C., Repici M., Chatton J.Y., Riederer B.M., Bonny C., Nicod P., Price M., Clarke P.G., Papa S., Franzoso G., Borsello T.
ISSN
1350-9047 (Print)
ISSN-L
1350-9047
Statut éditorial
Publié
Date de publication
2007
Peer-reviewed
Oui
Volume
14
Numéro
2
Pages
240-253
Langue
anglais
Résumé
Excitotoxic insults induce c-Jun N-terminal kinase (JNK) activation, which leads to neuronal death and contributes to many neurological conditions such as cerebral ischemia and neurodegenerative disorders. The action of JNK can be inhibited by the D-retro-inverso form of JNK inhibitor peptide (D-JNKI1), which totally prevents death induced by N-methyl-D-aspartate (NMDA) in vitro and strongly protects against different in vivo paradigms of excitotoxicity. To obtain optimal neuroprotection, it is imperative to elucidate the prosurvival action of D-JNKI1 and the death pathways that it inhibits. In cortical neuronal cultures, we first investigate the pathways by which NMDA induces JNK activation and show a rapid and selective phosphorylation of mitogen-activated protein kinase kinase 7 (MKK7), whereas the only other known JNK activator, mitogen-activated protein kinase kinase 4 (MKK4), was unaffected. We then analyze the action of D-JNKI1 on four JNK targets containing a JNK-binding domain: MAPK-activating death domain-containing protein/differentially expressed in normal and neoplastic cells (MADD/DENN), MKK7, MKK4 and JNK-interacting protein-1 (IB1/JIP-1).
Mots-clé
Adaptor Proteins, Signal Transducing/isolation & purification, Adaptor Proteins, Signal Transducing/metabolism, Animals, Calcium/metabolism, Cerebral Cortex/cytology, Cerebral Cortex/drug effects, Cycloheximide/pharmacology, Death Domain Receptor Signaling Adaptor Proteins, Electrophoresis, Gel, Two-Dimensional, Enzyme Activation/drug effects, Enzyme Inhibitors/pharmacology, Fluorescent Antibody Technique, Guanine Nucleotide Exchange Factors/metabolism, JNK Mitogen-Activated Protein Kinases/antagonists & inhibitors, JNK Mitogen-Activated Protein Kinases/metabolism, MAP Kinase Kinase 4/metabolism, MAP Kinase Kinase 7/metabolism, N-Methylaspartate/toxicity, Neurons/cytology, Neurons/drug effects, Neurotoxins/toxicity, Phosphorylation/drug effects, Proteomics, Rats, Signal Transduction/drug effects
Pubmed
Web of science
Open Access
Oui
Création de la notice
24/01/2008 15:34
Dernière modification de la notice
20/08/2019 14:00
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