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Forebrain deletion of the dystonia protein torsinA causes dystonic-like movements and loss of striatal cholinergic neurons.

Samuel S Pappas | Katherine Darr | Sandra M Holley | Carlos Cepeda | Omar S Mabrouk | Jenny-Marie T Wong | Tessa M LeWitt | Reema Paudel | Henry Houlden | Robert T Kennedy | Michael S Levine | William T Dauer
eLife | 2015

Striatal dysfunction plays an important role in dystonia, but the striatal cell types that contribute to abnormal movements are poorly defined. We demonstrate that conditional deletion of the DYT1 dystonia protein torsinA in embryonic progenitors of forebrain cholinergic and GABAergic neurons causes dystonic-like twisting movements that emerge during juvenile CNS maturation. The onset of these movements coincides with selective degeneration of dorsal striatal large cholinergic interneurons (LCI), and surviving LCI exhibit morphological, electrophysiological, and connectivity abnormalities. Consistent with the importance of this LCI pathology, murine dystonic-like movements are reduced significantly with an antimuscarinic agent used clinically, and we identify cholinergic abnormalities in postmortem striatal tissue from DYT1 dystonia patients. These findings demonstrate that dorsal LCI have a unique requirement for torsinA function during striatal maturation, and link abnormalities of these cells to dystonic-like movements in an overtly symptomatic animal model.

Pubmed ID: 26052670

Research resources used in this publication

None found

Antibodies used in this publication

None found

Associated grants

  • Agency: NCATS NIH HHS, United States
    Id: UL1TR000433
  • Agency: Medical Research Council, United Kingdom
    Id: G108/638
  • Agency: NIDA NIH HHS, United States
    Id: T32 DA007268
  • Agency: NIBIB NIH HHS, United States
    Id: R37EB003320
  • Agency: NINDS NIH HHS, United States
    Id: T32 NS007222
  • Agency: NIBIB NIH HHS, United States
    Id: R37 EB003320
  • Agency: Medical Research Council, United Kingdom
    Id: MR/J004758/1
  • Agency: NINDS NIH HHS, United States
    Id: R01NS077730
  • Agency: NINDS NIH HHS, United States
    Id: T32NS007222
  • Agency: NCATS NIH HHS, United States
    Id: UL1 TR000433
  • Agency: NINDS NIH HHS, United States
    Id: R01 NS077730
  • Agency: Medical Research Council, United Kingdom
    Id: G0802760
  • Agency: Medical Research Council, United Kingdom
    Id: G1001253

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