Cited by 236Neuroinflammation and Neurodegeneration MechanismsAlzheimer's disease research and treatmentsAnesthesia and Neurotoxicity Research

Concerted type I interferon signaling in microglia and neural cells promotes memory impairment associated with amyloid β plaques

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Roy, Ethan R., Chiu, Gabriel, Li, Sanming, Propson, Nicholas E., Kanchi, Rupa, Wang, Baiping, Coarfa, Cristian, Zheng, Hui +1 more·2022·Immunity

Abstract

The principal signals that drive memory and cognitive impairment in Alzheimer's disease (AD) remain elusive. Here, we revealed brain-wide cellular reactions to type I interferon (IFN-I), an innate immune cytokine aberrantly elicited by amyloid β plaques, and examined their role in cognition and neuropathology relevant to AD in a murine amyloidosis model. Using a fate-mapping reporter system to track cellular responses to IFN-I, we detected robust, Aβ-pathology-dependent IFN-I activation in microglia and other cell types. Long-term blockade of IFN-I receptor (IFNAR) rescued both memory and synaptic deficits and resulted in reduced microgliosis, inflammation, and neuritic pathology. Microglia-specific Ifnar1 deletion attenuated the loss of post-synaptic terminals by selective engulfment, whereas neural Ifnar1 deletion restored pre-synaptic terminals and decreased plaque accumulation. Overall, IFN-I signaling represents a critical module within the neuroinflammatory network of AD and prompts concerted cellular states that are detrimental to memory and cognition.

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Crossref · 10.1016/j.immuni.2022.03.018

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  • In APP/PS1 mice and 5xFAD mice, loss of type I IFN signaling is protective, ameliorating Aβ pathology and attenuating neurotoxicity, synapse loss, and microglial activation.

    “In APP/PS1 mice and 5xFAD mice, loss of type I IFN signaling is protective ameliorating the Aβ pathology and attenuating neurotoxicity, synapse loss, and microglial activation.”

    From Interferon signaling modulates Down syndrome-associated Alzheimer’s disease pathology in a mouse model (2025) · cites this paper as [78]

    The Results sections on IFN-I blockade report restored excitatory synapse markers, reduced microglial activation, and partial reductions in neuritic pathology in 5XFAD mice. But blockade did not reduce Aβ plaque load; only neural-cell-specific Ifnar1 deletion did. The paper does not report these protective effects as findings from its own APP/PS1 experiments, so the claim overgeneralizes across models and forms of IFN-I loss. (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • Recent studies demonstrate that type I IFN signaling is essential for cognitive impairment in AD, impacting the neuroinflammatory network and contributing to neuropathogenic processes.

    “recent studies that demonstrate how type I IFN signaling is essential for cognitive impairment in AD,78 not only impacting the neuroinflammatory network of the disease but also contributing to neuropathogenic processes.”

    From Interferon signaling modulates Down syndrome-associated Alzheimer’s disease pathology in a mouse model (2025) · cites this paper as [78]

    The Results section ('IFN-I blockade rescues memory and synaptic deficits'; page not provided) reports restored memory in an amyloid-plaque mouse model after IFN-I receptor blockade. Other Results passages link IFN-I signaling to neuroinflammation and neuritic pathology, but the human AD evidence is observational; the paper does not demonstrate that IFN-I signaling is essential for cognitive impairment in people with AD. (LLM, conf=0.85)

    Experimental — accuracy not yet measured

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Cited by

Sorted by citations

Authors
Roy, E. R., Chiu, G., Li, S., Propson, N. E., Kanchi, R., Wang, B., Coarfa, C., Zheng, H., & Cao, W.
Affiliations
Baylor College of Medicine (US)
Corresponding author
Cao, Wei
Venue
Immunity
Publisher
Elsevier BV
Published
2022-05
Volume
55
Issue
5
Pages
879-894.e6
ISSN
1074-7613 (ISSN-L)
OpenAlex
W4224216596
Cited by
236
References
22
Citations by year
2026: 59 · 2025: 72 · 2024: 55 · 2023: 32 · 2022: 16 · 2021: 2
FWCI
15.62
Type
journal article
Language
en
Open access
Locations
  • Immunity (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Commons-TMC (Texas Medical Center) (submittedVersion)
Funders
  • National Institute on Aging (RF1AG057587, RF1AG020670, RF1AG062257, R01AG020670, R01AG074283)
  • National Cancer Institute (P30CA125123)
  • National Institute of Neurological Disorders and Stroke (RF1NS093652, R01NS093652)
  • National Institute of Environmental Health Sciences (P30ES030285, P42ES027725)
  • National Institute on Minority Health and Health Disparities (P50MD015496)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (U54HD083092)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Developmental Neuroscience › Anesthesia and Neurotoxicity Research
Keywords
type I interferon signaling, Alzheimer's disease, amyloid plaques, microglia, IFNAR1, memory impairment, neuroinflammation, synaptic deficits, microglial activation, neuritic plaques, cognitive impairment
MeSH terms
Alzheimer Disease, Animals, Disease Models, Animal, Immunity, Innate, Interferon Type I, Memory Disorders, Mice, Transgenic, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Microglia, Mice, Plaque, Amyloid

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