Cited by 350Amyotrophic Lateral Sclerosis ResearchMuscle Physiology and DisordersHereditary Neurological Disorders

Loss of murine TDP-43 disrupts motor function and plays an essential role in embryogenesis

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Kraemer, Brian C., Schuck, Theresa, Wheeler, Jeanna M., Robinson, Linda C., Trojanowski, John Q., Lee, Virginia M. Y., Schellenberg, Gerard D.·2010·Acta Neuropathologica

Abstract

Abnormal TDP-43 aggregation is a prominent feature in the neuropathology of amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration. Mutations in TARDBP, the gene encoding TDP-43, cause some cases of ALS. The normal function of TDP-43 remains incompletely understood. To better understand TDP-43 biology, we generated mutant mice carrying a genetrap disruption of Tardbp. Mice homozygous for loss of TDP-43 are not viable. TDP-43 deficient embryos die about day 7.5 of embryonic development thereby demonstrating that TDP-43 protein is essential for normal prenatal development and survival. However, heterozygous Tardbp mutant mice exhibit signs of motor disturbance and muscle weakness. Compared with wild type control littermates, Tardbp (+/-) animals have significantly decreased forelimb grip strength and display deficits in a standard inverted grid test despite no evidence of pathologic changes in motor neurons. Thus, TDP-43 is essential for viability, and mild reduction in TDP-43 function is sufficient to cause motor deficits without degeneration of motor neurons.

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  • ALS-like phenotypes are seen in mice with partial depletion of TDP43 by RNA interference or with targeted deletion of Tdp43 in motor neurons.

    “ALS-like phenotypes are seen in mice with partial depletion of TDP43 by RNA interference, or with targeted deletion of Tdp43 in motor neurons”

    From The neurogenetics of alternative splicing (2016) · cites this paper as [163]

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Authors
Kraemer, B. C., Schuck, T., Wheeler, J. M., Robinson, L. C., Trojanowski, J. Q., Lee, V. M. Y., & Schellenberg, G. D.
Affiliations
  • University of Washington (US)
  • University of Pennsylvania (US)
  • VA Puget Sound Health Care System (US)
Corresponding author
Kraemer, Brian C.
Venue
Acta Neuropathologica
Published
2010-03-03
Volume
119
Issue
4
Pages
409-419
ISSN
  • 0001-6322 (ISSN-L)
  • 1432-0533
OpenAlex
W2011396520
Cited by
350
References
53
Citations by year
2026: 6 · 2025: 14 · 2024: 22 · 2023: 29 · 2022: 22 · 2021: 25 · 2020: 19 · 2019: 23 · 2018: 25 · 2017: 19 · 2016: 16 · 2015: 15 · 2014: 23 · 2013: 26 · 2012: 27
FWCI
17.34
Type
journal article
Language
en
Open access
Locations
  • Acta Neuropathologica (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Department of Veterans Affairs
  • Office of Research and Development
  • National Institutes of Health
  • University of California, Davis
  • National Institute on Aging (P01AG017586, AG17586)
  • National Institute of Neurological Disorders and Stroke (NS064131, R01NS064131)
Topics
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Hereditary Neurological Disorders
Keywords
TDP-43, TARDBP, amyotrophic lateral sclerosis, frontotemporal lobar degeneration, TARDBP mutations, embryonic lethality, motor impairment, muscle weakness, grip strength, motor neurons, protein aggregation
MeSH terms
Amyotrophic Lateral Sclerosis, Animals, DNA-Binding Proteins, Forelimb, Heterozygote, Mice, Inbred C57BL, Motor Activity, Motor Neurons, Mutation, Muscle, Skeletal, Hand Strength, Embryonic Development, Mice

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