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Publication Detail
Cell environment shapes TDP-43 function with implications in neuronal and muscle disease
  • Publication Type:
    Journal article
  • Authors:
    Šušnjar U, Škrabar N, Brown A-L, Abbassi Y, Phatnani H, NYGC ALS Consortium , Cortese A, Cereda C, Bugiardini E, Cardani R, Meola G, Ripolone M, Moggio M, Romano M, Secrier M, Fratta P, Buratti E
  • Publisher:
    Springer Science and Business Media LLC
  • Publication date:
    05/04/2022
  • Journal:
    Communications Biology
  • Volume:
    5
  • Article number:
    314
  • Medium:
    Electronic
  • Status:
    Published
  • Country:
    England
  • Print ISSN:
    2399-3642
  • PII:
    10.1038/s42003-022-03253-8
  • Language:
    English
  • Keywords:
    Amyotrophic Lateral Sclerosis, Animals, DNA-Binding Proteins, Frontotemporal Dementia, Humans, Mice, Muscles, RNA Splicing
  • Notes:
    This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Abstract
TDP-43 (TAR DNA-binding protein 43) aggregation and redistribution are recognised as a hallmark of amyotrophic lateral sclerosis and frontotemporal dementia. As TDP-43 inclusions have recently been described in the muscle of inclusion body myositis patients, this highlights the need to understand the role of TDP-43 beyond the central nervous system. Using RNA-seq, we directly compare TDP-43-mediated RNA processing in muscle (C2C12) and neuronal (NSC34) mouse cells. TDP-43 displays a cell-type-characteristic behaviour targeting unique transcripts in each cell-type, which is due to characteristic expression of RNA-binding proteins, that influence TDP-43's performance and define cell-type specific splicing. Among splicing events commonly dysregulated in both cell lines, we identify some that are TDP-43-dependent also in human cells. Inclusion levels of these alternative exons are altered in tissues of patients suffering from FTLD and IBM. We therefore propose that TDP-43 dysfunction contributes to disease development either in a common or a tissue-specific manner.
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Genetics, Evolution & Environment
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