Fachbereich Veterinärmedizin



    TorsinA protects against oxidative stress in COS-1 and PC12 cells (2003)

    Zeitschriftenartikel / wissenschaftlicher Beitrag
    Kuner, Rohini
    Teismann, Peter
    Trutzel, Annette
    Naim, Jomana
    Richter, Angelika
    Schmidt, Nicole
    von Ahsen, Oliver
    Bach, Alfred
    Ferger, Boris
    Schneider, Armin
    Neuroscience Letters; 350(3) — S. 153–156
    ISSN: 0304-3940
    Pubmed: 14550917
    Institut für Pharmakologie und Toxikologie

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    14195 Berlin
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    Abstract / Zusammenfassung

    Dystonia is a highly frequent movement disorder, the pathogenesis of which remains unclear. The cloning of TorsinA, the gene responsible for early-onset dystonia, was a major breakthrough. However, the function of this protein remains unclear. By sequence homology, TorsinA belongs to the ATPases associated with diverse cellular activities-family, many of whose members are chaperones and/or proteases. We report here that in an in vitro model for oxidative stress, H2O2 treatment, overexpression of TorsinA was protective against cell death. COS-1 cells overexpressing TorsinA demonstrated drastically reduced terminal deoxynucleotidyl transferase biotin-dUTP nick end labeling-staining following exposure to H2O2. Furthermore, transfection with TorsinA significantly increased survival of PC12 after H2O2 treatment. To our knowledge, this is the first demonstration that TorsinA protects against oxidative stress. We speculate that a loss of this cellular function in mutant TorsinA may be linked to the pathogenesis of early-onset dystonia.