Cited by 70Neuroscience and Neuropharmacology ResearchAlzheimer's disease research and treatmentsUbiquitin and proteasome pathways

GluA1 subunit ubiquitination mediates amyloid-β-induced loss of surface α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors

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Guntupalli, Sumasri, Jang, Se Eun, Zhu, Tianyi, Huganir, Richard L., Widagdo, Jocelyn, Anggono, Victor·2017·Journal of Biological Chemistry

Abstract

The accumulation of soluble amyloid-β (Aβ) peptides produces profound neuronal changes in the brain during the pathogenesis of Alzheimer's disease. Excessive levels of Aβ disrupt excitatory synaptic transmission by promoting the removal of synaptic AMPA receptors (AMPARs), dendritic spine loss, and synaptic depression. Recently, activity-dependent ubiquitination of the GluA1 subunit has been shown to regulate the intracellular sorting of AMPARs toward late endosomes for degradation. However, whether this ubiquitin signaling pathway mediates Aβ-induced loss of surface AMPARs is unknown. In this study, we demonstrate that acute exposure of cultured neurons to soluble Aβ oligomers induces AMPAR ubiquitination concomitant with the removal of AMPARs from the plasma membrane. Importantly, expression of the GluA1 ubiquitin-deficient mutants inhibited the adverse effects of Aβ on the surface expression of AMPARs in neurons. Furthermore, we revealed the cross-talk between GluA1 ubiquitination and phosphorylation, in particular phosphorylation at Ser-845, which is crucial for AMPAR recycling and is known to be dephosphorylated in the presence of Aβ. Our data showed that the GluA1 ubiquitin-deficient mutant enhances GluA1 phosphorylation on Ser-845. Conversely, the GluA1 S845D phosphomimetic mutant reduced binding with Nedd4-1 and hence the ubiquitination of AMPARs. Importantly, the GluA1 S845D mutant also prevented Aβ-induced removal of surface AMPARs. Taken together, these findings provide the first demonstration of the dynamic cross-modulation of GluA1 ubiquitination and phosphorylation, a process that is perturbed by Aβ, in regulating the membrane sorting decision that ultimately determines the number of AMPARs on the cell surface.

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Crossref · 10.1074/jbc.m116.774554

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  • Ubiquitination and phosphorylation of GluA1 reciprocally inhibit each other, indicating complex cross talk of GluA1 PTMs may regulate LTP expression.

    “Interestingly, ubiquination and phosphorylation of GluA1 reciprocally inhibit each other indicating that a complex cross talk of GluA1 PTMs may regulate LTP expression (Guntupalli et al., 2017).”

    From The AMPA Receptor Code of Synaptic Plasticity (2018) · cites this paper as Guntupalli et al., 2017

    The Results section, “The cross-talk between GluA1 phosphorylation and ubiquitination” (page unavailable), supports reciprocal inhibition at GluA1 Ser-845: ubiquitin-deficient mutants showed increased phosphorylation, while an S845D phosphomimetic showed reduced ubiquitination. The paper links this cross-talk to AMPA receptor trafficking and surface expression, but does not establish that it regulates LTP expression. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • Phosphorylated GluA1 S845 is resistant to ubiquitination.

    “It has been shown that phosphorylated GluA1 S845 is resistant to ubiquitination (Guntupalli et al., 2017), offering a potential mechanism for the differential removal of phosphorylated and unphosphorylated GluA1 during scaling-down.”

    From The AMPA Receptor Code of Synaptic Plasticity (2018) · cites this paper as Guntupalli et al., 2017

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  1. [33]Alfonso S., Kessels H. W., Banos C. C., Chan T. R., Lin E. T., Kumaravel G., Scannevin R. H., Rhodes K. J., Huganir R., Guckian K. M., Dunah A. W., and Malinow R. (2014) Synapto-depressive effects of amyloid β require PICK1. Eur. J. Neurosci. 39, 1225– 1233 24713001 PMC3983572

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Authors
Guntupalli, S., Jang, S. E., Zhu, T., Huganir, R. L., Widagdo, J., & Anggono, V.
Affiliations
  • The University of Queensland (AU)
  • Johns Hopkins University (US)
Corresponding author
Anggono, Victor
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2017-05
Volume
292
Issue
20
Pages
8186-8194
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2604570082
Cited by
70
References
40
Citations by year
2026: 6 · 2025: 5 · 2024: 10 · 2023: 8 · 2022: 9 · 2021: 9 · 2020: 6 · 2019: 7 · 2018: 7 · 2017: 3
FWCI
3.08
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • John T. Reid Charitable Trusts
  • Alzheimer's Australia Dementia Research Foundation (DGP14–57)
  • National Health and Medical Research Council (GNT1083209, GNT1099114, 477108)
  • Australian Research Council (DE170100112)
  • University of Queensland
  • National Institutes of Health (P50AG005146)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
Keywords
GluR1, AMPA receptors, amyloid-beta, ubiquitination, phosphorylation, NEDD4-1, receptor internalization, synaptic plasticity, Alzheimer's disease, membrane sorting, excitatory synaptic transmission, phosphomimetic mutant
MeSH terms
Nedd4 Ubiquitin Protein Ligases, Animals, Cells, Cultured, Neurons, Peptide Fragments, Phosphorylation, Amyloid beta-Peptides, Receptors, AMPA, Amino Acid Substitution, Mutation, Missense, Ubiquitin-Protein Ligases, Rats, Ubiquitination, Endosomal Sorting Complexes Required for Transport

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