Cited by 1,289Alzheimer's disease research and treatmentsTelomeres, Telomerase, and SenescenceNeuroinflammation and Neurodegeneration Mechanisms

Clearance of senescent glial cells prevents tau-dependent pathology and cognitive decline

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Bussian, Tyler J., Aziz, Asef, Meyer, Charlton F., Swenson, Barbara L., van Deursen, Jan M., Baker, Darren J.·2018·Nature

Abstract

Cellular senescence, which is characterized by an irreversible cell-cycle arrest 1 accompanied by a distinctive secretory phenotype 2, can be induced through various intracellular and extracellular factors. Senescent cells that express the cell cycle inhibitory protein p16 INK4A have been found to actively drive naturally occurring age-related tissue deterioration 3,4 and contribute to several diseases associated with ageing, including atherosclerosis 5 and osteoarthritis 6. Various markers of senescence have been observed in patients with neurodegenerative diseases 7-9; however, a role for senescent cells in the aetiology of these pathologies is unknown. Here we show a causal link between the accumulation of senescent cells and cognition-associated neuronal loss. We found that the MAPT P301S PS19 mouse model of tau-dependent neurodegenerative disease 10 accumulates p16 INK4A-positive senescent astrocytes and microglia. Clearance of these cells as they arise using INK-ATTAC transgenic mice prevents gliosis, hyperphosphorylation of both soluble and insoluble tau leading to neurofibrillary tangle deposition, and degeneration of cortical and hippocampal neurons, thus preserving cognitive function. Pharmacological intervention with a first-generation senolytic modulates tau aggregation. Collectively, these results show that senescent cells have a role in the initiation and progression of tau-mediated disease, and suggest that targeting senescent cells may provide a therapeutic avenue for the treatment of these pathologies.

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Crossref · 10.1038/s41586-018-0543-y

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  • Senescence has been observed in neurons, astrocytes, microglia, oligodendrocytes, and oligodendrocyte progenitor cells.

    “Senescence has been observed in neurons, astrocytes, microglia, oligodendrocytes, and oligodendrocyte progenitor cells (57–59).”

    From Senolytic Drugs: Reducing Senescent Cell Viability to Extend Health Span (2021) · cites this paper as [58]

    The main text reports senescence-associated findings in astrocytes and microglia of PS19 mice. It reports no comparable induction in oligodendrocytes or neuron-enriched cells, and does not report senescence in oligodendrocyte progenitor cells. Thus this source supports two of the five cell types listed, not the full sentence. (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • In mice, removing senescent cells genetically or pharmacologically improves function in models of neurodegenerative diseases such as Parkinson's and Alzheimer's.

    “Importantly, clearance of Sncs either genetically or pharmacologically in mice leads to functional improvements in models of neurodegenerative diseases such as PD and AD (57–59).”

    From Senolytic Drugs: Reducing Senescent Cell Viability to Extend Health Span (2021) · cites this paper as [58]

    In the main text (page unavailable), genetic clearance of senescent cells in PS19 tauopathy mice mitigated short-term memory loss. The ABT263 experiment in the same model reduced tau phosphorylation, but the paper does not report a functional improvement from pharmacological clearance. It does not test clearance in a Parkinson’s disease model or identify PS19 as a separate Alzheimer’s disease model. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Genetic clearance of senescent cells or senolytic treatment in tauopathy mouse models mitigates cognitive decline and neurodegeneration.

    “Genetic clearance of senescent cells or senolytic treatment in tauopathy mouse models mitigated cognitive decline and neurode-generation158,159”

    From Telomere dysfunction in ageing and age-related diseases (2022) · cites this paper as [158]

    The paper’s main text (page not specified) reports that genetic clearance in PS19 tauopathy mice prevented neurodegeneration and mitigated memory loss. Its senolytic ABT263 experiment reports reduced tau phosphorylation, but does not report that treatment mitigated cognitive decline or neurodegeneration. (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • The INK-ATTAC and p16-3MR mouse models have substantially advanced knowledge about whether senescent cells contribute to ageing and age-related diseases in model organisms, covering conditions such as Parkinson disease, Alzheimer disease, atherosclerosis, idiopathic pulmonary fibrosis, chronic obstructive pulmonary disease, and osteoarthritis.

    “These two mouse models have greatly accelerated our understanding of whether senescent cells contribute to ageing and age-related diseases, at least in model organisms, for numerous diseases, including Parkinson disease196, Alzheimer disease197,198, atherosclerosis175, idiopathic pulmonary fibrosis199, chronic obstructive pulmonary disease200 and osteoarthritis201.”

    From Cellular senescence in ageing: from mechanisms to therapeutic opportunities (2021) · cites this paper as [197]

    The main text (page not available) reports that clearing senescent cells with INK-ATTAC in PS19 mice prevented tau pathology, neurodegeneration and cognitive decline. That supports this citation’s contribution to the Alzheimer-disease example, but the study tests a tauopathy model, not Alzheimer disease as a whole, and does not test p16-3MR or the other listed diseases. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • Cellular senescence is involved in the pathogenesis of Alzheimer's disease.

    “Cellular senescence contributes to Alzheimer’s disease (AD) pathogenesis.”

    From Senolytic therapy in mild Alzheimer's disease: a phase 1 feasibility trial (2023) · cites this paper as [8]

    The main text (page not provided) reports that clearing senescent glial cells prevented tau pathology, neurodegeneration, and cognitive decline in a PS19 mouse model. This supports a role for senescence in tau-mediated disease, but the study does not establish that it contributes to Alzheimer’s disease pathogenesis generally. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

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Authors
Bussian, T. J., Aziz, A., Meyer, C. F., Swenson, B. L., van Deursen, J. M., & Baker, D. J.
Affiliations
Mayo Clinic (US)
Corresponding author
Baker, Darren J.
Venue
Nature
Published
2018-09-19
Volume
562
Issue
7728
Pages
578-582
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2890865075
Cited by
1,289
References
35
Citations by year
2026: 140 · 2025: 165 · 2024: 185 · 2023: 161 · 2022: 173 · 2021: 157 · 2020: 169 · 2019: 127 · 2018: 12
FWCI
79.93
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Radboud Repository (Radboud University) (submittedVersion)
Funders
National Institute on Aging (R01AG053229)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
cellular senescence, senolytics, astrocytes, microglia, tauopathy, neurofibrillary tangles, tau hyperphosphorylation, cognitive decline, neuronal loss, p16INK4a, gliosis, neurodegeneration
MeSH terms
Aniline Compounds, Animals, Astrocytes, Female, Gliosis, Humans, Male, Mice, Transgenic, Neuroglia, Phosphorylation, Solubility, Sulfonamides, Neurofibrillary Tangles, tau Proteins, Cellular Senescence, Transgenes, Cyclin-Dependent Kinase Inhibitor p16, Mice, Cognitive Dysfunction

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