Islet-brain1/C-Jun N-terminal kinase interacting protein-1 (IB1/JIP-1) promoter variant is associated with Alzheimer's disease.

Détails

ID Serval
serval:BIB_44922BEA09FD
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Islet-brain1/C-Jun N-terminal kinase interacting protein-1 (IB1/JIP-1) promoter variant is associated with Alzheimer's disease.
Périodique
Molecular psychiatry
Auteur(s)
Helbecque N., Abderrahamani A., Meylan L., Riederer B., Mooser V., Miklossy J., Delplanque J., Boutin P., Nicod P., Haefliger J.A., Cottel D., Amouyel P., Froguel P., Waeber G., Abderrhamani A.
ISSN
1359-4184
Statut éditorial
Publié
Date de publication
2003
Peer-reviewed
Oui
Volume
8
Numéro
4
Pages
413-422, 363
Langue
anglais
Résumé
Islet-brain1 (IB1) or c-Jun NH2 terminal kinase interacting protein-1 (JIP-1), the product of the MAPK8IP1 gene, functions as a neuronal scaffold protein to allow signalling specificity. IB1/JIP-1 interacts with many cellular components including the reelin receptor ApoER2, the low-density lipoprotein receptor-related protein (LRP), kinesin and the Alzheimer's amyloid precursor protein. Coexpression of IB1/JIP-1 with other components of the c-Jun NH2 terminal-kinase (JNK) pathway activates the JNK activity; conversely, selective disruption of IB1/JIP-1 in mice reduces the stress-induced apoptosis of neuronal cells. We therefore hypothesized that IB1/JIP-1 is a risk factor for Alzheimer's disease (AD). By immunocytochemistry, we first colocalized the presence of IB1/JIP-1 with JNK and phosphorylated tau in neurofibrillary tangles. We next identified a -499A>G polymorphism in the 5' regulatory region of the MAPK8IP1 gene. In two separate French populations the -499A>G polymorphism of MAPK8IP1 was not associated with an increased risk to AD. However, when stratified on the +766C>T polymorphism of exon 3 of the LRP gene, the IB1/JIP-1 polymorphism was strongly associated with AD in subjects bearing the CC genotype in the LRP gene. The functional consequences of the -499A>G polymorphism of MAPK8IP1 was investigated in vitro. In neuronal cells, the G allele increased transcriptional activity and was associated with an enhanced binding activity. Taken together, these data indicate that the increased transcriptional activity in the presence of the G allele of MAPK8IP1 is a risk factor to the onset of in patients bearing the CC genotype of the LRP gene.
Mots-clé
Adaptor Proteins, Signal Transducing, Alzheimer Disease, Autopsy, Base Sequence, Brain, Carrier Proteins, Cognition, DNA Primers, France, Genetic Variation, Humans, Neuroblastoma, Nuclear Proteins, Promoter Regions, Genetic, Trans-Activators, Transfection, Tumor Cells, Cultured
Pubmed
Web of science
Open Access
Oui
Création de la notice
13/03/2009 15:06
Dernière modification de la notice
20/08/2019 14:49
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