Loss of murine TDP-43 disrupts motor function and plays an essential role in embryogenesis
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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.
- ORCID
- Venue
- Acta Neuropathologica
- Published
- 2010-03-03
- Volume
- 119
- Issue
- 4
- Pages
- 409-419
- ISSN
- 0001-6322 (ISSN-L)
- 1432-0533
- PMC
- PMC2880609
- 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
- green
- www.ncbi.nlm.nih.gov
- Licence
- www.springer.com/tdm (tdm)
- 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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