Cited by 706Amyotrophic Lateral Sclerosis ResearchAlzheimer's disease research and treatmentsHereditary Neurological Disorders

TDP-43 mutant transgenic mice develop features of ALS and frontotemporal lobar degeneration

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Wegorzewska, Iga, Bell, Shaughn, Cairns, Nigel J., Miller, Timothy M., Baloh, Robert H.·2009·Proceedings of the National Academy of Sciences

Abstract

Frontotemporal lobar degeneration (FTLD) and amyotrophic lateral sclerosis (ALS) are neurodegenerative diseases that show considerable clinical and pathologic overlap, with no effective treatments available. Mutations in the RNA binding protein TDP-43 were recently identified in patients with familial amyotrophic lateral sclerosis (ALS), and TDP-43 aggregates are found in both ALS and FTLD-U (FTLD with ubiquitin aggregates), suggesting a common underlying mechanism. We report that mice expressing a mutant form of human TDP-43 develop a progressive and fatal neurodegenerative disease reminiscent of both ALS and FTLD-U. Despite universal transgene expression throughout the nervous system, pathologic aggregates of ubiquitinated proteins accumulate only in specific neuronal populations, including layer 5 pyramidal neurons in frontal cortex, as well as spinal motor neurons, recapitulating the phenomenon of selective vulnerability seen in patients with FTLD-U and ALS. Surprisingly, cytoplasmic TDP-43 aggregates are not present, and hence are not required for TDP-43-induced neurodegeneration. These results indicate that the cellular and molecular substrates for selective vulnerability in FTLD-U and ALS are shared between mice and humans, and suggest that altered DNA/RNA-binding protein function, rather than toxic aggregation, is central to TDP-43-related neurodegeneration.

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  • In TDP-43 mouse models, pathogenesis involves a combination of loss of nuclear TDP43 function and TDP-43 cytoplasmic gain-of-toxic-function.

    “In TDP-43 mouse models, pathogenesis is involved in a combination of loss of nuclear TDP43 function and TDP-43 cytoplasmic gain-of-toxic-function.334”

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Authors
Wegorzewska, I., Bell, S., Cairns, N. J., Miller, T. M., & Baloh, R. H.
Affiliations
  • Department of Neurology and
  • Washington University in St. Louis (US)
Venue
Proceedings of the National Academy of Sciences
Published
2009-11-03
Volume
106
Issue
44
Pages
18809-18814
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2072413533
Cited by
706
References
31
Citations by year
2026: 16 · 2025: 24 · 2024: 30 · 2023: 35 · 2022: 31 · 2021: 51 · 2020: 51 · 2019: 30 · 2018: 41 · 2017: 30 · 2016: 31 · 2015: 41 · 2014: 45 · 2013: 49 · 2012: 58
FWCI
41.76
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Burroughs Wellcome Fund
  • Muscular Dystrophy Association
  • Children's Discovery Institute
  • Hope Center for Neurological Disorders
  • National Institutes of Health (NS057105)
  • National Institute of Neurological Disorders and Stroke (NS055980, P30NS057105, NS057105, K08NS055980)
Topics
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Hereditary Neurological Disorders
Keywords
TDP-43, amyotrophic lateral sclerosis, frontotemporal lobar degeneration, FTLD-U, transgenic mice, TDP-43 mutations, protein aggregation, selective neuronal vulnerability, layer 5 pyramidal neurons, spinal motoneurons, RNA-binding proteins, neurodegeneration
MeSH terms
Amyotrophic Lateral Sclerosis, Animals, Brain, Disease Models, Animal, DNA-Binding Proteins, Gait, Humans, Mice, Transgenic, Mutation, Survival Analysis, Mice, Frontotemporal Lobar Degeneration

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