Blocking ADAM10 synaptic trafficking generates a model of sporadic Alzheimer's disease

Roberta Epis, Elena Marcello, Fabrizio Gardoni, Csaba Vastagh, Matteo Malinverno, Claudia Balducci, Alessio Colombo, Barbara Borroni, Hugo Vara, Mario Dell'Agli, Flamino Cattabeni, Maurizio Giustetto, Tiziana Borsello, Gianluigi Forloni, Alessandro Padovani, Monica Di Luca

Research output: Contribution to journalArticlepeer-review

Abstract

We describe here an innovative, non-transgenic animal model of Alzheimer's disease. This model mimics early stages of sporadic disease, which represents the vast majority of cases. The model was obtained by interfering with the complex between a disintegrin and metalloproteinase domain containing protein 10 (ADAM10), the main α-secretase candidate, and its partner, synapse-associated protein 97, a protein of the postsynaptic density-membrane associated guanylate kinase family. Association of ADAM10 with synapse-associated protein 97 governs enzyme trafficking and activity at synapses. Interfering with the ADAM10/synapse-associated protein 97 complex for 2 weeks by means of a cell-permeable peptide strategy is sufficient to shift the metabolism of the amyloid precursor protein towards amyloidogenesis and allows the reproduction of initial phases of sporadic Alzheimer's disease. After 2 weeks of treatment, we detected progressive Alzheimer's disease-like neuropathology, with an increase of β-amyloid aggregate production and of tau hyperphosphorylation, and a selective alteration of N-methyl-d-aspartic acid receptor subunit composition in the postsynaptic compartment of mouse brain. Behavioural and electrophysiological deficits were also induced by peptide treatment.

Original languageEnglish
Pages (from-to)3323-3335
Number of pages13
JournalBrain
Volume133
Issue number11
DOIs
Publication statusPublished - Nov 2010

Keywords

  • amyloid precursor protein metabolism
  • animal models
  • NMDA
  • SAP97
  • synaptopathy

ASJC Scopus subject areas

  • Clinical Neurology

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