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Loss of ALS-associated TDP-43 in zebrafish causes muscle degeneration, vascular dysfunction, and reduced motor neuron axon outgrowth

Open access
Schmid, Bettina, Hruscha, Alexander, Hogl, Sebastian, Banzhaf-Strathmann, Julia, Strecker, Katrin, van der Zee, Julie, Teucke, Mathias, Eimer, Stefan, Hegermann, Jan, Kittelmann, Maike, Kremmer, Elisabeth, Cruts, Marc, Solchenberger, Barbara, Hasenkamp, Laura, van Bebber, Frauke, Van Broeckhoven, Christine, Edbauer, Dieter, Lichtenthaler, Stefan F., Haass, Christian·2013·Proceedings of the National Academy of Sciences

Abstract

Mutations in the Tar DNA binding protein of 43 kDa (TDP-43; TARDBP) are associated with amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration with TDP-43+inclusions (FTLD-TDP). To determine the physiological function of TDP-43, we knocked out zebrafish Tardbp and its paralogue Tardbp (TAR DNA binding protein-like), which lacks the glycine-rich domain where ALS- and FTLD-TDP–associated mutations cluster.tardbp mutants show no phenotype, a result of compensation by a unique splice variant of tardbpl that additionally contains a C-terminal elongation highly homologous to the glycine-rich domain of tardbp. Double-homozygous mutants of tardbp and tardbpl show muscle degeneration, strongly reduced blood circulation, mispatterning of vessels, impaired spinal motor neuron axon outgrowth, and early death. In double mutants the muscle-specific actin binding protein Filamin Ca is up-regulated. Strikingly,Filamin C is similarly increased in the frontal cortex of FTLD-TDP patients, suggesting aberrant expression in smooth muscle cells and TDP-43 loss-of-function as one underlying disease mechanism.

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Metadata

Authors
Schmid, B., Hruscha, A., Hogl, S., Banzhaf-Strathmann, J., Strecker, K., van der Zee, J., Teucke, M., Eimer, S., Hegermann, J., Kittelmann, M., Kremmer, E., Cruts, M., Solchenberger, B., Hasenkamp, L., van Bebber, F., Van Broeckhoven, C., Edbauer, D., Lichtenthaler, S. F., & Haass, C.
Venue
Proceedings of the National Academy of Sciences
Published
2013-03
Volume
110
Issue
13
Pages
4986-4991
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2107338709
Cited by
169
References
11
FWCI
7.60
Type
journal article
Language
en
Open access
green

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The paper
Schmid, B., Hruscha, A., Hogl, S., Banzhaf-Strathmann, J., Strecker, K., van der Zee, J., Teucke, M., Eimer, S., Hegermann, J., Kittelmann, M., Kremmer, E., Cruts, M., Solchenberger, B., Hasenkamp, L., van Bebber, F., Van Broeckhoven, C., Edbauer, D., Lichtenthaler, S. F., & Haass, C. (2013). Loss of ALS-associated TDP-43 in zebrafish causes muscle degeneration, vascular dysfunction, and reduced motor neuron axon outgrowth. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1218311110

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.