Cited by 28Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsNeurological Disease Mechanisms and Treatments

THY-Tau22 mouse model accumulates more tauopathy at late stage of the disease in response to microglia deactivation through TREM2 deficiency

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Vautheny, Audrey, Duwat, Charlotte, Aurégan, Gwennaëlle, Joséphine, Charlène, Hérard, Anne-Sophie, Jan, Caroline, Mitja, Julien, Gipchtein, Pauline +8 more·2021·Neurobiology of Disease

Abstract

The role played by microglia has taken the center of the stage in the etiology of Alzheimer's disease (AD). Several genome-wide association studies carried out on large cohorts of patients have indeed revealed a large number of genetic susceptibility factors corresponding to genes involved in neuroinflammation and expressed specifically by microglia in the brain. Among these genes TREM2, a cell surface receptor expressed by microglia, arouses strong interest because its R47H variant confers a risk of developing AD comparable to the ε4 allele of the APOE gene. Since this discovery, a growing number of studies have therefore examined the role played by TREM2 in the evolution of amyloid plaques and neurofibrillary tangles, the two brain lesions characteristic of AD. Many studies report conflicting results, reflecting the complex nature of microglial activation in AD. Here, we investigated the impact of TREM2 deficiency in the THY-Tau22 transgenic line, a well-characterized model of tauopathy. Our study reports an increase in the severity of tauopathy lesions in mice deficient in TREM2 occurring at an advanced stage of the pathology. This exacerbation of pathology was associated with a reduction in microglial activation indicated by typical morphological features and altered expression of specific markers. However, it was not accompanied by any further changes in memory performance. Our longitudinal study confirms that a defect in microglial TREM2 signaling leads to an increase i…

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Crossref · 10.1016/j.nbd.2021.105398

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  • TREM2 loss-of-function studies have yielded conflicting outcomes in the context of tau pathology.

    “TREM2 loss-of-function studies have also yielded conflicting outcomes in the context of tau pathology.”

    From TREM2-Deficient Microglia Attenuate Tau Spreading In Vivo (2023) · cites this paper as [15]

  • In the THY-Tau22 transgenic model, TREM2 deletion increases tau hyperphosphorylation and aggregation at advanced stages of pathology.

    “Furthermore, in the THY-Tau22 transgenic model that overexpresses human tau carrying the G272V and P301S mutations, it was shown that TREM2 deletion increases tau hyperphosphorylation and aggregation at advanced stages of pathology [15].”

    From TREM2-Deficient Microglia Attenuate Tau Spreading In Vivo (2023) · cites this paper as [15]

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Authors
Vautheny, A., Duwat, C., Aurégan, G., Joséphine, C., Hérard, A.-S., Jan, C., Mitja, J., Gipchtein, P., Gaillard, M.-C., Buée, L., Blum, D., Hantraye, P., Bonvento, G., Brouillet, E., Cambon, K., & Bemelmans, A.-P.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Inserm (FR)
Corresponding author
Bemelmans, Alexis-Pierre
Venue
Neurobiology of Disease
Publisher
Elsevier BV
Published
2021-07
Volume
155
Pages
105398
ISSN
0969-9961 (ISSN-L)
OpenAlex
W3160918637
Cited by
28
References
54
Citations by year
2026: 2 · 2025: 6 · 2024: 7 · 2023: 8 · 2022: 2 · 2021: 3
FWCI
3.14
Type
journal article
Language
en
Open access
Locations
  • Neurobiology of Disease (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
French National Research Agency
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Neurology › Neurological Disease Mechanisms and Treatments
Keywords
TREM2, tauopathy, Alzheimer's disease, microglial activation, neuroinflammation, amyloid plaques, neurofibrillary tangles, memory performance, disease progression
MeSH terms
Animals, Disease Models, Animal, Female, Humans, Longitudinal Studies, Male, Membrane Glycoproteins, Mice, Inbred C57BL, Mice, Transgenic, Receptors, Immunologic, tau Proteins, Microglia, Maze Learning, Thy-1 Antigens, Tauopathies, Mice

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