Cited by 335Neuroinflammation and Neurodegeneration MechanismsCytokine Signaling Pathways and InteractionsAlzheimer's disease research and treatments

The JAK/STAT3 pathway is a common inducer of astrocyte reactivity in Alzheimer’s and Huntington’s diseases

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Ben Haim, Lucile, Ceyzériat, Kelly, Carrillo-de Sauvage, Maria Angeles, Aubry, Fabien, Auregan, Gwennaëlle, Guillermier, Martine, Ruiz, Marta, Petit, Fanny +10 more·2015·The Journal of Neuroscience

Abstract

Astrocyte reactivity is a hallmark of neurodegenerative diseases (ND), but its effects on disease outcomes remain highly debated. Elucidation of the signaling cascades inducing reactivity in astrocytes during ND would help characterize the function of these cells and identify novel molecular targets to modulate disease progression. The Janus kinase/signal transducer and activator of transcription 3 (JAK/STAT3) pathway is associated with reactive astrocytes in models of acute injury, but it is unknown whether this pathway is directly responsible for astrocyte reactivity in progressive pathological conditions such as ND. In this study, we examined whether the JAK/STAT3 pathway promotes astrocyte reactivity in several animal models of ND. The JAK/STAT3 pathway was activated in reactive astrocytes in two transgenic mouse models of Alzheimer's disease and in a mouse and a nonhuman primate lentiviral vector-based model of Huntington's disease (HD). To determine whether this cascade was instrumental for astrocyte reactivity, we used a lentiviral vector that specifically targets astrocytes in vivo to overexpress the endogenous inhibitor of the JAK/STAT3 pathway [suppressor of cytokine signaling 3 (SOCS3)]. SOCS3 significantly inhibited this pathway in astrocytes, prevented astrocyte reactivity, and decreased microglial activation in models of both diseases. Inhibition of the JAK/STAT3 pathway within reactive astrocytes also increased the number of huntingtin aggregates, a neuropathological hallmark of HD, but did not influence neuronal death. Our data demonstrate that the JAK/STAT3 pathway is a common mediator of astrocyte reactivity that is highly conserved between disease states, species, and brain regions. This universal signaling cascade represents a potent target to study the role of reactive astrocytes in ND.

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Authors
Ben Haim, L., Ceyzériat, K., Carrillo-de Sauvage, M. A., Aubry, F., Auregan, G., Guillermier, M., Ruiz, M., Petit, F., Houitte, D., Faivre, E., Vandesquille, M., Aron-Badin, R., Dhenain, M., Déglon, N., Hantraye, P., Brouillet, E., Bonvento, G., & Escartin, C.
Affiliations
Université Paris-Sud (FR)
Venue
The Journal of Neuroscience
Published
2015-02-11
Volume
35
Issue
6
Pages
2817-2829
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1993573917
Cited by
335
References
60
Citations by year
2026: 38 · 2025: 40 · 2024: 37 · 2023: 27 · 2022: 31 · 2021: 38 · 2020: 37 · 2019: 27 · 2018: 23 · 2017: 20 · 2016: 11 · 2015: 6
FWCI
10.69
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, other-oa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • SERVAL (Université de Lausanne) (publishedVersion, other-oa)
  • HAL (submittedVersion, other-oa)
Funders
  • Agence Nationale de la Recherche (ANR-11-INBS-0011)
  • Association France Alzheimer
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
JAK/STAT3 signaling, astrocyte activation, Alzheimer's disease, Huntington's disease, neurodegenerative diseases, SOCS3, microglial activation, huntingtin aggregates, transgenic mouse model, nonhuman primate model
MeSH terms
Suppressor of Cytokine Signaling 3 Protein, Alzheimer Disease, Animals, Astrocytes, Electron Transport Complex IV, Humans, Huntington Disease, Macaca fascicularis, Male, Mice, Inbred C57BL, Mice, Transgenic, Signal Transduction, NF-kappa B, Serotonin Plasma Membrane Transport Proteins, STAT3 Transcription Factor, Suppressor of Cytokine Signaling Proteins, Mice, Janus Kinases

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