Cited by 249Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Alzheimer’s-Causing Mutations Shift Aβ Length by Destabilizing γ-Secretase-Aβn Interactions

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Szaruga, Maria, Munteanu, Bogdan, Lismont, Sam, Veugelen, Sarah, Horré, Katrien, Mercken, Marc, Saido, Takaomi C., Ryan, Natalie S. +9 more·2017·Cell

Abstract

Alzheimer's disease (AD)-linked mutations in Presenilins (PSEN) and the amyloid precursor protein (APP) lead to production of longer amyloidogenic Aβ peptides. The shift in Aβ length is fundamental to the disease; however, the underlying mechanism remains elusive. Here, we show that substrate shortening progressively destabilizes the consecutive enzyme-substrate (E-S) complexes that characterize the sequential γ-secretase processing of APP. Remarkably, pathogenic PSEN or APP mutations further destabilize labile E-S complexes and thereby promote generation of longer Aβ peptides. Similarly, destabilization of wild-type E-S complexes by temperature, compounds, or detergent promotes release of amyloidogenic Aβ. In contrast, E-Aβ n stabilizers increase γ-secretase processivity. Our work presents a unifying model for how PSEN or APP mutations enhance amyloidogenic Aβ production, suggests that environmental factors may increase AD risk, and provides the theoretical basis for the development of γ-secretase/substrate stabilizing compounds for the prevention of AD.

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Crossref · 10.1016/j.cell.2017.07.004

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  • GDE2 loss leads to an increase in Aβ peptides, in particular the longer Aβ42 peptide associated with pathogenic Aβ species.

    “Thus, GDE2 loss leads to an increase in Aβ peptides, in particular, the longer Aβ42 peptide associated with pathogenic Aβ species (31).”

    From GDE2-RECK controls ADAM10 α-secretase–mediated cleavage of amyloid precursor protein (2021) · cites this paper as [31]

    The Introduction identifies long Aβ peptides, including Aβ42, as relevant to the formation of toxic species in Alzheimer’s disease. But the paper examines PSEN and APP mutations, not GDE2 loss; it does not support the claim that GDE2 loss increases Aβ peptides or Aβ42 specifically. (LLM, conf=0.87)

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Authors
Szaruga, M., Munteanu, B., Lismont, S., Veugelen, S., Horré, K., Mercken, M., Saido, T. C., Ryan, N. S., De Vos, T., Savvides, S. N., Gallardo, R., Schymkowitz, J., Rousseau, F., Fox, N. C., Hopf, C., De Strooper, B., & Chávez-Gutiérrez, L.
Affiliations
  • Technische Hochschule Mannheim (DE)
  • VIB-KU Leuven Center for Brain & Disease Research (BE)
  • Janssen (Belgium) (BE)
  • RIKEN Center for Brain Science (JP)
  • University College London (GB)
  • Ghent University (BE)
Venue
Cell
Publisher
Elsevier BV
Published
2017-07
Volume
170
Issue
3
Pages
443-456.e14
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2742157915
Cited by
248
References
59
Citations by year
2026: 12 · 2025: 15 · 2024: 35 · 2023: 29 · 2022: 27 · 2021: 30 · 2020: 44 · 2019: 32 · 2018: 20 · 2017: 4
FWCI
20.51
Type
journal article
Language
en
Update notices
erratum (2021-04-15)
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Ghent University Academic Bibliography (Ghent University) (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Lirias (submittedVersion)
Funders
  • European Regional Development Fund
  • Agentschap voor Innovatie door Wetenschap en Technologie
  • KU Leuven (OT/12/092, METH/14/07)
  • European Research Council
  • Janssen Pharmaceuticals
  • Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg
  • Herculesstichting (AUGE/11/029)
  • Fonds Wetenschappelijk Onderzoek (G074115)
  • Deutsche Forschungsgemeinschaft (1S16516N, INST 874/7-1 FUGG, SB/131289)
  • Belgian Federal Science Policy Office (P7/16)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, gamma-secretase, presenilin mutations, amyloid precursor protein mutations, temperature dependence of enzyme activity, detergent effects on enzyme activity, Alzheimer's disease prevention
MeSH terms
Alzheimer Disease, Animals, Brain, Cell Line, Enzyme Stability, Female, Humans, Membrane Proteins, Models, Molecular, Mutation, Peptide Hydrolases, Endopeptidases, Amyloid beta-Protein Precursor, Mice, Presenilin-1, HEK293 Cells

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