Receptor for advanced glycation end product-dependent activation of p38 mitogen-activated protein kinase contributes to amyloid-β-mediated cortical synaptic dysfunction

Nicola Origlia, Massimo Righi, Simona Capsoni, Antonino Cattaneo, Fang Fang, David Stern, John Xi Chen, Ann Marie Schmidt, Ottavio Arancio, Du Yan Shi, Luciano Domenici

Research output: Contribution to journalArticle

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Abstract

Soluble amyloid-β (Aβ) peptide is likely to play a key role during early stages of Alzheimer's disease (AD) by perturbing synaptic function and cognitive processes. Receptor for advanced glycation end products (RAGE) has been identified as a receptor involved in Aβ-induced neuronal dysfunction. We investigated the role of neuronal RAGE in Aβ-induced synaptic dysfunction in the entorhinal cortex, an area of the brain important in memory processes that is affected early in AD. We found that soluble oligomeric Aβ peptide (Aβ42) blocked long-term potentiation (LTP), but did not affect long-term depression, paired-pulse facilitation, or basal synaptic transmission. In contrast, Aβ did not inhibit LTP in slices from RAGE-null mutant mice or in slices from wild-type mice treated with anti-RAGE IgG. Similarly, transgenic mice expressing a dominant-negative form of RAGE targeted to neurons showed normal LTP in the presence of Aβ, suggesting that neuronal RAGE functions as a signal transducer for Aβ-mediated LTP impairment. To investigate intracellular pathway transducing RAGE activation by Aβ, we used inhibitors of stress activated kinases. We found that inhibiting p38 mitogen-activated protein kinase (p38 MAPK), but not blocking c-Jun N-terminal kinase activation, was capable of maintaining LTP in Aβ-treated slices. Moreover, Aβ-mediated enhancement of p38 MAPK phosphorylation in cortical neurons was reduced by blocking antibodies to RAGE. Together, our results indicate that Aβ impairs LTP in the entorhinal cortex through neuronal RAGE-mediated activation of p38 MAPK.

Original languageEnglish (US)
Pages (from-to)3521-3530
Number of pages10
JournalJournal of Neuroscience
Volume28
Issue number13
DOIs
StatePublished - Mar 26 2008

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p38 Mitogen-Activated Protein Kinases
Amyloid
Long-Term Potentiation
Entorhinal Cortex
Alzheimer Disease
Advanced Glycosylation End Product-Specific Receptor
Neurons
Blocking Antibodies
JNK Mitogen-Activated Protein Kinases
Transducers
Synaptic Transmission
Cognition
Transgenic Mice
Phosphotransferases
Immunoglobulin G
Phosphorylation
Depression
Peptides
Brain

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)

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Receptor for advanced glycation end product-dependent activation of p38 mitogen-activated protein kinase contributes to amyloid-β-mediated cortical synaptic dysfunction. / Origlia, Nicola; Righi, Massimo; Capsoni, Simona; Cattaneo, Antonino; Fang, Fang; Stern, David; Chen, John Xi; Schmidt, Ann Marie; Arancio, Ottavio; Shi, Du Yan; Domenici, Luciano.

In: Journal of Neuroscience, Vol. 28, No. 13, 26.03.2008, p. 3521-3530.

Research output: Contribution to journalArticle

Origlia, Nicola ; Righi, Massimo ; Capsoni, Simona ; Cattaneo, Antonino ; Fang, Fang ; Stern, David ; Chen, John Xi ; Schmidt, Ann Marie ; Arancio, Ottavio ; Shi, Du Yan ; Domenici, Luciano. / Receptor for advanced glycation end product-dependent activation of p38 mitogen-activated protein kinase contributes to amyloid-β-mediated cortical synaptic dysfunction. In: Journal of Neuroscience. 2008 ; Vol. 28, No. 13. pp. 3521-3530.
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AU - Righi, Massimo

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AU - Cattaneo, Antonino

AU - Fang, Fang

AU - Stern, David

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