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Related Experiment Videos

Inclusion formation in Huntington's disease R6/2 mouse muscle cultures.

M Orth1, J M Cooper, G P Bates

  • 1University Department of Clinical Neurosciences, Royal Free and University College Medical College, University College London, UK.

Journal of Neurochemistry
|September 13, 2003
PubMed
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Huntington's disease (HD) involves huntingtin protein aggregates in cells. Cultured mouse muscle cells show these aggregates, suggesting a model for studying HD's impact and formation factors.

Area of Science:

  • Neuroscience
  • Cell Biology
  • Genetics

Background:

  • Huntington's disease (HD) is an autosomal dominant neurodegenerative disorder.
  • It is characterized by an expansion of glutamine repeats in the huntingtin protein.
  • Aggregates of huntingtin protein are found in the brains of HD patients and in transgenic mouse models.

Purpose of the Study:

  • To investigate the formation of huntingtin protein aggregates in post-mitotic cells.
  • To explore the role of huntingtin in myotube differentiation.
  • To establish a cell culture model for studying HD.

Main Methods:

  • Culture of myoblasts and myotubes from R6/2 transgenic mice and littermate controls.
  • Immunohistochemical analysis for huntingtin and ubiquitin.

Related Experiment Videos

  • Observation of aggregate formation under different culture conditions (e.g., serum deprivation).

    • Main Results:

    • Huntingtin immunoreactivity was high in differentiating myoblasts and myotubes.
    • Huntingtin and ubiquitin-positive aggregates formed in R6/2 cultures post-differentiation.
    • Cytoplasmic aggregates appeared in non-myotube cells, while nuclear aggregates formed in myotubes over time.
    • Serum deprivation increased the formation of nuclear inclusions in R6/2 myotubes.

    Conclusions:

    • Cultured myotubes from R6/2 mice provide a valuable model for studying Huntington's disease.
    • This model can be used to investigate the biochemical consequences of huntingtin aggregates.
    • Environmental factors influence the formation of huntingtin aggregates in these cells.