APP heterozygosity averts memory deficit in knockin mice expressing the Danish dementia BRI2 mutant (Articolo in rivista)

Type
Label
  • APP heterozygosity averts memory deficit in knockin mice expressing the Danish dementia BRI2 mutant (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • Tamayev R.1, Matsuda S.1, Giliberto L.1,4, Arancio O.2, D'Adamio L.1,3 (2011)
    APP heterozygosity averts memory deficit in knockin mice expressing the Danish dementia BRI2 mutant
    in EMBO journal (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Tamayev R.1, Matsuda S.1, Giliberto L.1,4, Arancio O.2, D'Adamio L.1,3 (literal)
Pagina inizio
  • 2501 (literal)
Pagina fine
  • 2509 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Issue 12 - doi: 10.1038/emboj.2011.161. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 30 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 - Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA. 2 - Department of Pathology and Cell Biology, Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University, New York, NY, USA. 3 - National Research Council of Italy—Cellular Biology and Neurobiology Institute Via del Fosso del Fiorano, Roma, Italy. (literal)
Titolo
  • APP heterozygosity averts memory deficit in knockin mice expressing the Danish dementia BRI2 mutant (literal)
Abstract
  • An autosomal dominant mutation in the BRI2/ITM2B gene causes familial Danish dementia (FDD). Analysis of FDD(KI) mice, a mouse model of FDD genetically congruous to the human disease since they carry one mutant and one wild-type Bri2/Itm2b allele, has shown that the Danish mutation causes loss of Bri2 protein, synaptic plasticity and memory impairments. BRI2 is a physiological interactor of A²-precursor protein (APP), a gene associated with Alzheimer disease, which inhibits processing of APP. Here, we show that APP/Bri2 complexes are reduced in synaptic membranes of FDD(KI) mice. Consequently, APP metabolites derived from processing of APP by ²-, ±- and ³-secretases are increased in Danish dementia mice. APP haplodeficiency prevents memory and synaptic dysfunctions, consistent with a role for APP metabolites in the pathogenesis of memory and synaptic deficits. This genetic suppression provides compelling evidence that APP and BRI2 functionally interact, and that the neurological effects of the Danish form of BRI2 only occur when sufficient levels of APP are supplied by two alleles. This evidence establishes a pathogenic sameness between familial Danish and Alzheimer's dementias. (literal)
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