Cited by 294Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsAnesthesia and Neurotoxicity Research

Tau Activation of Microglial cGAS–IFN Reduces MEF2C‐mediated Cognitive Resilience

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Udeochu, Joe C., Amin, Sadaf, Huang, Yige, Fan, Li, Torres, Eileen Ruth S., Carling, Gillian K., Liu, Bangyan, McGurran, Hugo +21 more·2023·Nature Neuroscience

Abstract

Pathological hallmarks of Alzheimer’s disease (AD) precede clinical symptoms by years, indicating a period of cognitive resilience before the onset of dementia. Here, we report that activation of cyclic GMP–AMP synthase (cGAS) diminishes cognitive resilience by decreasing the neuronal transcriptional network of myocyte enhancer factor 2c (MEF2C) through type I interferon (IFN-I) signaling. Pathogenic tau activates cGAS and IFN-I responses in microglia, in part mediated by cytosolic leakage of mitochondrial DNA. Genetic ablation of Cgas in mice with tauopathy diminished the microglial IFN-I response, preserved synapse integrity and plasticity and protected against cognitive impairment without affecting the pathogenic tau load. cGAS ablation increased, while activation of IFN-I decreased, the neuronal MEF2C expression network linked to cognitive resilience in AD. Pharmacological inhibition of cGAS in mice with tauopathy enhanced the neuronal MEF2C transcriptional network and restored synaptic integrity, plasticity and memory, supporting the therapeutic potential of targeting the cGAS–IFN–MEF2C axis to improve resilience against AD-related pathological insults.

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Crossref · 10.1038/s41593-023-01315-6

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  • There is a window of opportunity for cGAS inhibition to reduce tau spread.

    “Genetic deletion of cGAS did not reduce tau inclusions in 9-month-old P301S mice41, suggesting a ‘window of opportunity’ for cGAS inhibition to reduce tau spread.”

    From The R136S mutation in the APOE3 gene confers resilience against tau pathology via inhibition of the cGAS-STING-IFN pathway (2025) · cites this paper as [41]

    The Results section (‘cGAS loss rescues memory, synapse loss and plasticity’; page unavailable) reports no difference in tau aggregates in the hippocampi or entorhinal cortices of P301S mice after Cgas deletion. That supports the sentence’s finding about tau inclusions, but the paper does not establish a window in which cGAS inhibition reduces tau spread; its reported benefits concern memory, synapses and cognitive resilience. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • A brain permeable cGAS inhibitor (TDI6570/G097) formulated in chow protects against tau-induced deficits in P301S mice.

    “Our previous work established the efficacy of a brain permeable cGAS inhibitor (TDI6570, also known as G097, hereafter referred to as cGASi) formulated in chow in protecting against tau-induced deficits in P301S mice41,44.”

    From The R136S mutation in the APOE3 gene confers resilience against tau pathology via inhibition of the cGAS-STING-IFN pathway (2025) · cites this paper as [41]

    The Results section (“Inhibiting cGAS protects synapses and cognition in tauopathy”) reports that brain-permeable TDI-6570 was given in chow to P301S mice and protected against synapse loss and cognitive deficits. Our copy does not identify TDI-6570 as “G097” (searched: G097 and the proposed alias), so that part of the attribution is unverified. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Previous work established the efficacy of a brain permeable cGAS inhibitor (TDI6570/G097) in protecting against tau-induced deficits in P301S mice.

    “Our previous work established the efficacy of a brain permeable cGAS inhibitor (TDI6570, also known as G097, hereafter referred to as cGASi) formulated in chow in protecting against tau-induced deficits in P301S mice41,44.”

    From <i>APOE3</i> - <i>R136S</i> mutation confers resilience against tau pathology via cGAS-STING-IFN inhibition (2024) · cites this paper as [41]

    The Results section, “Inhibiting cGAS protects synapses and cognition in tauopathy” (page not provided), reports that chow-formulated TDI-6570 entered the brain and protected P301S mice against synapse loss and cognitive deficits. The cited passages support the efficacy claim, but our copy does not establish that TDI-6570 is also known as G097. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • In a mouse model of tauopathy, pathological tau activates the cGAS-STING-IFN-I pathway in microglia, leading to suppression of MEF2C.

    “In this axis, pathological tau activates the cyclic GMP‐AMP synthase (cGAS)‐stimulator of interferon genes (STING)‐IFN‐Ι pathway in microglia, leading to the suppression of MEF2C, a critical transcription factor for cognitive resilience [47].”
  • Stimulation of the cGAS-STING pathway induces microglial dysfunction and sterile inflammation, which exacerbates AD.

    “Stimulation of the cGAS-STING pathway induces microglial dysfunction and sterile inflammation, which exacerbates AD.”

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1 retracted

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1 of the 68 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. [12]Sliter DA Parkin and PINK1 mitigate STING-induced inflammation. Nature 561, 258– 262 (2018). 30135585 PMC7362342

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Authors
Udeochu, J. C., Amin, S., Huang, Y., Fan, L., Torres, E. R. S., Carling, G. K., Liu, B., McGurran, H., Coronas-Samano, G., Kauwe, G., Mousa, G. A., Wong, M. Y., Ye, P., Nagiri, R. K., Lo, I., Holtzman, J., Corona, C., Yarahmady, A., Gill, M. T., Raju, R. M., Mok, S.-A., Gong, S., Luo, W., Zhao, M., Tracy, T. E., Ratan, R. R., Tsai, L.-H., Sinha, S. C., & Gan, L.
Affiliations
  • Weill Cornell Medicine (US)
  • Gladstone Institutes (US)
  • Buck Institute for Research on Aging (US)
  • University of Alberta (CA)
  • Boston Children's Hospital (US)
  • Massachusetts Institute of Technology (US)
Corresponding author
  • Amin, Sadaf
  • Gan, Li
Venue
Nature Neuroscience
Published
2023-04-24
Volume
26
Issue
5
Pages
737-750
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W4366824412
Cited by
289
References
68
Citations by year
2026: 71 · 2025: 108 · 2024: 86 · 2023: 24
FWCI
51.86
Type
journal article
Language
en
Open access
Locations
  • Nature Neuroscience (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • BrightFocus Foundation (A20201312F)
  • JumpStart Research Career Development Program, Weill Cornell Medicine
  • Boston Children’s Hospital (5K12HD052896)
  • U.S. Department of Health & Human Services | National Institutes of Health (R01AG064239, R01AG072758)
  • U.S. Department of Health & Human Services | NIH | National Institute on Aging (R01AG074541, R01AG054214)
  • CureAD Fund Daedalus Fund
  • JPB Foundation
  • Tau Consortium CureAD Fund Daedalus Fund
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Developmental Neuroscience › Anesthesia and Neurotoxicity Research
Keywords
Alzheimer's disease, tauopathy, cGAS, type I interferon, MEF2C, microglia, cognitive resilience, mitochondrial DNA release, synaptic integrity, synaptic plasticity, memory, neuroinflammation
MeSH terms
Animals, Cognition, Immunity, Innate, Interferons, Nucleotidyltransferases, tau Proteins, Microglia, Mice, MEF2 Transcription Factors

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