Amino acids in a region of ataxin-1 outside of the polyglutamine tract influence the course of disease in SCA1 transgenic mice

Pamela J. Skinner, Cynthia A. Vierra-Green, Effat Emamian, Huda Y. Zoghbi, Harry T. Orr

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Spinocerebellar ataxia type 1 (SCA1) belongs to a family of polyglutamine induced neurodegenerative disorders. Transgenic mice that overexpress a mutant allele of the SCA1 gene develop a progressive ataxia and Purkinje cell pathology. In this report, the pathological importance of a segment of ataxin-1 previously shown to be important for protein-protein interactions was examined. While the absence of a 122 amino acid segment from the protein-protein interaction region of ataxin-1 did not effect the initiation of disease, its absence substantially suppressed the progression of disease in SCA1 transgenic mice. Thus, these data suggest that this region of ataxin-1 has a role in disease progression. Furthermore, these results provide evidence that ataxin-1-induced disease initiation and disease progression involve distinct molecular events.

Original languageEnglish (US)
Pages (from-to)33-42
Number of pages10
JournalNeuroMolecular Medicine
Volume1
Issue number1
DOIs
StatePublished - Dec 1 2002

Keywords

  • Ataxia
  • Disease progression
  • Polyglutamine
  • SCA1

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