Cited by 46Neuroinflammation and Neurodegeneration MechanismsAlzheimer's disease research and treatmentsNeurological Disease Mechanisms and Treatments

CSF1R inhibitors induce a sex-specific resilient microglial phenotype and functional rescue in a tauopathy mouse model

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Johnson, Noah R., Yuan, Peng, Castillo, Erika, Lopez, T. Peter, Yue, Weizhou, Bond, Annalise, Rivera, Brianna M., Sullivan, Miranda C. +4 more·2023·Nature Communications

Abstract

Microglia are central to pathogenesis in many neurological conditions. Drugs targeting colony-stimulating factor-1 receptor (CSF1R) to block microglial proliferation in preclinical disease models have shown mixed outcomes, thus the therapeutic potential of this approach remains unclear. Here, we show that CSF1R inhibitors given by multiple dosing paradigms in the Tg2541 tauopathy mouse model cause a sex-independent reduction in pathogenic tau and reversion of non-microglial gene expression patterns toward a normal wild type signature. Despite greater drug exposure in male mice, only female mice have functional rescue and extended survival. A dose-dependent upregulation of immediate early genes and neurotransmitter dysregulation are observed in the brains of male mice only, indicating that excitotoxicity may preclude functional benefits. Drug-resilient microglia in male mice exhibit morphological and gene expression patterns consistent with increased neuroinflammatory signaling, suggesting a mechanistic basis for sex-specific excitotoxicity. Complete microglial ablation is neither required nor desirable for neuroprotection and therapeutics targeting microglia must consider sex-dependent effects.

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  • Studies using transgenic P301STau mice report that microglial depletion reduced neurodegeneration and the accumulation of phosphorylated tau.

    “In line with our findings, studies using transgenic P301STau mice report that microglial depletion reduced neurodegeneration and the accumulation of phosphorylated tau (Johnson et al., 2023; Mancuso et al., 2019; Shi et al., 2019).”

    From A novel molecular class that recruits HDAC/MECP2 complexes to PU.1 motifs reduces neuroinflammation (2023) · cites this paper as Johnson et al., 2023

    The Results section on pathogenic tau reports that CSF1R-inhibitor treatment reduced phosphorylated tau in P301S Tg2541 mice. But the Results section on CNS injury reports reduced plasma NfL, a marker of neuronal injury, in treated females and increased NfL in treated males under the continuous-treatment regimen. Thus, the unqualified claim that microglial depletion reduced neurodegeneration omits an important sex-dependent limitation. No page numbers are available in our copy. (LLM, conf=0.88)

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Authors
Johnson, N. R., Yuan, P., Castillo, E., Lopez, T. P., Yue, W., Bond, A., Rivera, B. M., Sullivan, M. C., Hirouchi, M., Giles, K., Aoyagi, A., & Condello, C.
Affiliations
University of California, San Francisco (US)
Corresponding author
Condello, Carlo
Venue
Nature Communications
Published
2023-01-09
Volume
14
Issue
1
Pages
118-118
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4313829033
Cited by
46
References
86
Citations by year
2026: 10 · 2025: 16 · 2024: 12 · 2023: 8
FWCI
4.72
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Natural Science Foundation of Shanghai (22ZR1415000)
  • U.S. Department of Health & Human Services | NIH | National Institute on Aging (RF1 AG061874, P01 AG002132)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neurological Disease Mechanisms and Treatments
Keywords
CSF1R inhibitor, microglia, tauopathy, sex differences, excitotoxicity, neuroinflammation, microglial phenotype, neuroprotection, neurotransmitter dysregulation, immediate early genes, microglial ablation, neurodegeneration
MeSH terms
Animals, Brain, Disease Models, Animal, Female, Male, Phenotype, Receptors, Colony-Stimulating Factor, Receptors, Granulocyte-Macrophage Colony-Stimulating Factor, Microglia, Tauopathies, Mice

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