Tau Pathology Drives Dementia Risk-Associated Gene Networks toward Chronic Inflammatory States and Immunosuppression
Open accessAbstract
To understand how neural-immune-associated genes and pathways contribute to neurodegenerative disease pathophysiology, we performed a systematic functional genomic analysis in purified microglia and bulk tissue from mouse and human AD, FTD, and PSP. We uncover a complex temporal trajectory of microglial-immune pathways involving the type 1 interferon response associated with tau pathology in the early stages, followed by later signatures of partial immune suppression and, subsequently, the type 2 interferon response. We find that genetic risk for dementias shows disease-specific patterns of pathway enrichment. We identify drivers of two gene co-expression modules conserved from mouse to human, representing competing arms of microglial-immune activation (NAct) and suppression (NSupp) in neurodegeneration. We validate our findings by using chemogenetics, experimental perturbation data, and single-cell sequencing in post-mortem brains. Our results refine the understanding of stage- and disease-specific microglial responses, implicate microglial viral defense pathways in dementia pathophysiology, and highlight therapeutic windows.
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The observed tau effect is reminiscent of transition of microglial response from the neuroimmune activation state (NAct) to an immunosuppressed state (NSupp) in the context of tau-associated neurodegeneration networks.
“This is reminiscent of transition of microglial response from the neuroimmune activation state (NAct) to an immunosuppressed state (NSupp) in the context of tau-associated neurodegeneration networks (34).”
From Combinatorial model of amyloid β and tau reveals synergy between amyloid deposits and tangle formation (2022) · cites this paper as [34]
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- Authors
- Rexach, J. E., Polioudakis, D., Yin, A., Swarup, V., Chang, T. S., Nguyen, T., Sarkar, A., Chen, L., Huang, J., Lin, L.-C., Seeley, W., Trojanowski, J. Q., Malhotra, D., & Geschwind, D. H.
- Affiliations
- University of California, Los Angeles (US)
- University of California, San Francisco (US)
- University of Pennsylvania (US)
- F. Hoffmann-La Roche AG (CH)
- Corresponding author
- Geschwind, Daniel H.
- ORCID
- Venue
- Cell Reports
- Publisher
- Elsevier BV
- Published
- 2020-11
- Volume
- 33
- Issue
- 7
- Pages
- 108398
- ISSN
- 2211-1247 (ISSN-L)
- PMC
- PMC7842189
- OpenAlex
- W3098926190
- Cited by
- 94
- References
- 97
- Citations by year
- 2026: 9 · 2025: 13 · 2024: 23 · 2023: 20 · 2022: 18 · 2021: 10
- FWCI
- 4.65
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Cell Reports (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion, cc-by-nc-nd)
- eScholarship (California Digital Library) (submittedVersion, other-oa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- eScholarship (California Digital Library) (submittedVersion)
- Funders
- National Institutes of Health
- BrightFocus Foundation
- F. Hoffmann-La Roche
- 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
- tau pathology, dementia, microglia, neuroinflammation, immunosuppression, type I interferon response, Alzheimer's disease, frontotemporal dementia, progressive supranuclear palsy, risk genes, gene co-expression modules, neurodegeneration, chemogenetics, single-cell transcriptomics
- MeSH terms
- Aged, Animals, Brain, Dementia, Female, Humans, Immunosuppression Therapy, Inflammation, Male, Mice, Inbred C57BL, Risk Factors, tau Proteins, Microglia, Neurodegenerative Diseases, Genetic Predisposition to Disease, Genomics, Tauopathies, Mice, Gene Regulatory Networks, Frontotemporal Dementia, Primary Cell Culture
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