Cited by 205Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Tau deletion promotes brain insulin resistance

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Marciniak, Elodie, Leboucher, Antoine, Caron, Emilie, Ahmed, Tariq, Tailleux, Anne, Dumont, Julie, Issad, Tarik, Gerhardt, Ellen +19 more·2017·Journal of Experimental Medicine

Abstract

The molecular pathways underlying tau pathology–induced synaptic/cognitive deficits and neurodegeneration are poorly understood. One prevalent hypothesis is that hyperphosphorylation, misfolding, and fibrillization of tau impair synaptic plasticity and cause degeneration. However, tau pathology may also result in the loss of specific physiological tau functions, which are largely unknown but could contribute to neuronal dysfunction. In the present study, we uncovered a novel function of tau in its ability to regulate brain insulin signaling. We found that tau deletion leads to an impaired hippocampal response to insulin, caused by altered IRS-1 and PTEN (phosphatase and tensin homologue on chromosome 10) activities. Our data also demonstrate that tau knockout mice exhibit an impaired hypothalamic anorexigenic effect of insulin that is associated with energy metabolism alterations. Consistently, we found that tau haplotypes are associated with glycemic traits in humans. The present data have far-reaching clinical implications and raise the hypothesis that pathophysiological tau loss-of-function favors brain insulin resistance, which is instrumental for cognitive and metabolic impairments in Alzheimer’s disease patients.

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Authors
Marciniak, E., Leboucher, A., Caron, E., Ahmed, T., Tailleux, A., Dumont, J., Issad, T., Gerhardt, E., Pagesy, P., Vileno, M., Bournonville, C., Hamdane, M., Bantubungi, K., Lancel, S., Demeyer, D., Eddarkaoui, S., Vallez, E., Vieau, D., Humez, S., Faivre, E., Grenier-Boley, B., Outeiro, T. F., Staels, B., Amouyel, P., Balschun, D., Buee, L., & Blum, D.
Affiliations
  • Inserm (FR)
  • Université de Lille, Institut National de la Santé et de la Recherche Medicale (INSERM), CHU Lille, UMR-S 1172 JPArc, Lille, France 1
  • Hamad bin Khalifa University (QA)
  • Centre National de la Recherche Scientifique (FR)
  • Universitätsmedizin Göttingen (DE)
  • INSERM U1016, CNRS UMR8104, Université Paris Descartes Sorbonne Paris Cité, Institut Cochin, Paris, France 6
  • LabEx DISTALZ (Development of Innovative Strategies for a Transdisciplinary approach to ALZheimer’s disease), Lille, France 2
  • KU Leuven (BE)
Corresponding author
Blum, David
Venue
Journal of Experimental Medicine
Published
2017-06-26
Volume
214
Issue
8
Pages
2257-2269
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2695553179
Cited by
205
References
87
Citations by year
2026: 6 · 2025: 15 · 2024: 24 · 2023: 26 · 2022: 25 · 2021: 21 · 2020: 24 · 2019: 26 · 2018: 33 · 2017: 5
FWCI
17.80
Type
journal article
Language
en
Open access
Locations
  • The Journal of Experimental Medicine (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, cc-by)
  • Figshare (submittedVersion, cc-by)
  • LillOA (Université de Lille (University Of Lille)) (submittedVersion, other-oa)
  • Newcastle University ePrints (Newcastle Univesity) (cc-by)
Funders
  • France Alzheimer
  • Fondation de France
  • FHU VasCog
  • ANR
  • Fondation pour la Recherche Médicale
  • LECMA
  • Alzheimer Forschung Initiative
  • Fondation Plan Alzheimer
  • INSERM
  • CNRS
  • Université Lille 2
  • Lille Métropole Communauté Urbaine
  • Région Nord/Pas-de-Calais
  • FEDER
  • DN2M
  • FUI MEDIALZ
  • CHRU and Région Haut de France
  • Lille 2 University
  • Hauts de France
  • DFG
  • FWO (G0D76.14, G0587.14)
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
tau protein, brain insulin resistance, insulin signaling, IRS-1, PTEN, hippocampus, hypothalamus, energy metabolism, glycemic traits, Alzheimer's disease
MeSH terms
Animals, Brain, Haplotypes, Hippocampus, Humans, Insulin, Insulin Resistance, Male, Mice, Inbred C57BL, tau Proteins, Mice, Knockout, Mice, Cognitive Dysfunction

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