Cited by 174Alzheimer's disease research and treatmentsNeuroscience and Neuropharmacology ResearchNeuroinflammation and Neurodegeneration Mechanisms

DAB1 and Reelin effects on amyloid precursor protein and ApoE receptor 2 trafficking and processing

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Hoe, Hyang-Sook, Tran, Tracy S., Matsuoka, Yasuji, Howell, Brian W., Rebeck, G. William·2006·Journal of Biological Chemistry

Abstract

Numerous cytoplasmic adaptor proteins, including JIP1, FE65, and X11alpha, affect amyloid precursor protein (APP) processing and Abeta production. Dab1 is another adaptor protein that interacts with APP as well as with members of the apoE receptor family. We examined the effect of Dab1 on APP and apoEr2 processing in transfected cells and primary neurons. Dab1 interacted with APP and apoEr2 and increased levels of their secreted extracellular domains and their cytoplasmic C-terminal fragments. These effects depended on the NPXY domains of APP and apoEr2 and on the phosphotyrosine binding domain of Dab1 but did not depend on phosphorylation of Dab1. Dab1 decreased the levels of APP beta-C-terminal fragment and secreted Abeta. Full-length Dab1 or its phosphotyrosine binding domain alone increased surface levels of APP, as determined by surface protein biotinylation and live cell staining. A ligand for apoEr2, the extracellular matrix protein Reelin, significantly increased the interaction of apoEr2 with Dab1. Surprisingly, we also found that Reelin treatment significantly increased the interaction of APP and Dab1. Moreover, Reelin treatment increased cleavage of APP and apoEr2 and decreased production of the beta-C-terminal fragment of APP and Abeta. Together, these data suggest that Dab1 alters trafficking and processing of APP and apoEr2, and this effect is influenced by extracellular ligands.

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Crossref · 10.1074/jbc.m602162200

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  • Reelin induces ApoER2 processing and degradation.

    “There is also evidence showing that reelin induces ApoER2 processing [42], [43] and degradation [43], however the mechanisms by which this is accomplished by reelin is not completely clear.”
  • ApoER2 trafficking is related to its susceptibility to proteolytic processing by α-secretases of the ADAM family and by the γ-secretase complex.

    “Several lines of evidence relate ApoER2 trafficking with its susceptibility to proteolytic processing by the α-secretases of the ADAM family and by the γ-secretase complex [39], [42], [55], [57].”
  • Some adaptor proteins regulate the proteolytic processing of ApoER2 by binding to its NPxY motif.

    “Interestingly, some of these proteins also regulate the proteolytic processing of this receptor [42], [54], [55], [66] by binding to its NPxY motif.”
  • Reduced Reelin expression in HRM mice exacerbates the accumulation of both Aβ and phosphorylated tau, whose production is inhibited by Reelin signaling.

    “Reduced Reelin expression in HRM mice exacerbates the accumulation of both A␤ and phosphorylated tau (94), whose production is inhibited by Reelin signaling (Ref.76 and reviewed in Ref. 31).”

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Authors
Hoe, H.-S., Tran, T. S., Matsuoka, Y., Howell, B. W., & Rebeck, G. W.
Affiliations
  • Georgetown University Medical Center (US)
  • National Institutes of Health (US)
Corresponding author
Rebeck, G. William
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2006-11
Volume
281
Issue
46
Pages
35176-35185
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2058881577
Cited by
174
References
34
Citations by year
2026: 4 · 2025: 6 · 2024: 7 · 2023: 7 · 2022: 5 · 2021: 5 · 2020: 3 · 2019: 1 · 2018: 6 · 2017: 9 · 2016: 13 · 2015: 8 · 2014: 12 · 2013: 14 · 2012: 12
FWCI
9.13
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Institute on Aging (R01AG014473, K01AG022455)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Dab1, reelin, amyloid precursor protein, APP processing, amyloid-beta, adaptor proteins, NPXY motif, phosphotyrosine binding domain, protein trafficking, extracellular matrix ligands, neurons
MeSH terms
Reelin Protein, Animals, Cell Line, Chlorocebus aethiops, Gene Expression Regulation, Humans, Nerve Tissue Proteins, Phosphorylation, Serine Endopeptidases, Cell Adhesion Molecules, Neuronal, Extracellular Matrix Proteins, Amyloid beta-Protein Precursor, Receptors, Lipoprotein, Protein Transport, LDL-Receptor Related Proteins, Adaptor Proteins, Signal Transducing

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