Cited by 301Amyotrophic Lateral Sclerosis ResearchNeuroinflammation and Neurodegeneration MechanismsSpinal Cord Injury Research

Microglia-mediated recovery from ALS-relevant motor neuron degeneration in a mouse model of TDP-43 proteinopathy

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Spiller, Krista J., Restrepo, Clark R., Khan, Tahiyana, Dominique, Myrna A., Fang, Terry C., Canter, Rebecca G., Roberts, Christopher J., Miller, Kelly R. +3 more·2018·Nature Neuroscience

Abstract

Though motor neurons selectively degenerate in amyotrophic lateral sclerosis, other cell types are likely involved in this disease. We recently generated rNLS8 mice in which human TDP-43 (hTDP-43) pathology could be reversibly induced in neurons and expected that microglia would contribute to neurodegeneration. However, only subtle microglial changes were detected during disease in the spinal cord, despite progressive motor neuron loss; microglia still reacted to inflammatory triggers in these mice. Notably, after hTDP-43 expression was suppressed, microglia dramatically proliferated and changed their morphology and gene expression profiles. These abundant, reactive microglia selectively cleared neuronal hTDP-43. Finally, when microgliosis was blocked during the early recovery phase using PLX3397, a CSF1R and c-kit inhibitor, rNLS8 mice failed to regain full motor function, revealing an important neuroprotective role for microglia. Therefore, reactive microglia exert neuroprotective functions in this amyotrophic lateral sclerosis model, and definition of the underlying mechanism could point toward novel therapeutic strategies.

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  • The existence of DAM in mice and humans has recently been confirmed in tauopathy AD models, aging, and other neurodegenerative diseases such as ALS and multiple sclerosis.

    “The existence of DAM in mice and humans has recently been confirmed in tauopathy AD models (26, 27), aging (27, 28), and other neurodegenerative diseases, such as amyotrophic lateral sclerosis (ALS) (29) and multiple sclerosis (30).”

    From Therapeutic Idol reduction ameliorates amyloidosis and improves cognitive function in APP/PS1 mice (2020) · cites this paper as [29]

    The Results section on transcriptomic profiling (page unavailable) reports that genes previously called DAM were upregulated in microglia from an ALS-relevant mouse model during both late disease and early recovery. This supports the ALS mouse-model portion of the citation, but the paper does not establish a DAM population in humans: its human ALS analysis assesses reactive microgliosis, not DAM identity. The other diseases in the citing sentence have separate citations and are not assessed here. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Microglia actively facilitate clearance of hTDP-43 in a transgenic TDP-43 mouse model.

    “There is also evidence that microglia actively facilitate the clearance of hTDP-43 in a transgenic TDP-43 mouse model.342”

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Authors
Spiller, K. J., Restrepo, C. R., Khan, T., Dominique, M. A., Fang, T. C., Canter, R. G., Roberts, C. J., Miller, K. R., Ransohoff, R. M., Trojanowski, J. Q., & Lee, V. M.-Y.
Affiliations
  • University of Pennsylvania (US)
  • Biogen (United States) (US)
Corresponding author
Spiller, Krista J.
Venue
Nature Neuroscience
Published
2018-02-20
Volume
21
Issue
3
Pages
329-340
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2788797941
Cited by
301
References
50
Citations by year
2026: 17 · 2025: 31 · 2024: 48 · 2023: 32 · 2022: 33 · 2021: 47 · 2020: 37 · 2019: 36 · 2018: 20
FWCI
24.23
Type
journal article
Language
en
Open access
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • ALS Association
  • Judith and Jean Pape Adams Charitable Foundation
  • Biogen
  • National Institute on Aging (P30AG010124, P01AG017586, T32AG000255)
  • National Institute of Neurological Disorders and Stroke (R01NS110688)
Topics
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Spinal Cord Injury Research
Keywords
amyotrophic lateral sclerosis, TDP-43 proteinopathy, microglia, microglial activation, motor neuron degeneration, neuroprotection, PLX3397, CSF1R inhibition, c-kit inhibition, motor recovery, spinal cord
MeSH terms
Superoxide Dismutase-1, Aminopyridines, Amyotrophic Lateral Sclerosis, Animals, Gliosis, Humans, Inflammation, Mice, Transgenic, Motor Neurons, Mutation, Pyrroles, Spinal Cord, Muscle, Skeletal, Recovery of Function, Gene Expression Profiling, Myeloid Cells, Mice, TDP-43 Proteinopathies

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