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Neurodegenerative processes in Huntington's disease

D Bano1, F Zanetti, Y Mende

  • 1Deutsches Zentrum für Neurodegenerative Erkrankungen, Bonn, Germany. daniele.bano@dzne.de

Cell Death & Disease
|November 11, 2011
PubMed

Insights

Huntington's disease (HD) involves progressive neuron loss due to a mutant huntingtin protein. This review explores signaling pathways and age-dependent proteostasis loss contributing to neuronal degeneration and aggregate formation in HD.

Area of Science:

  • Neuroscience
  • Genetics
  • Molecular Biology

Background:

  • Huntington's disease (HD) is a severe neurodegenerative disorder.
  • Characterized by progressive striatal neuron loss, leading to motor and cognitive deficits.
  • Caused by expanded CAG trinucleotide repeats in the huntingtin gene.

Purpose of the Study:

  • To review signaling pathways involved in neuronal degeneration in HD.
  • To highlight the role of age-dependent proteostasis loss in HD pathogenesis.
  • To discuss potential molecular targets for pharmacological interventions.

Main Methods:

  • Review of in-vitro and in-vivo model investigations.
  • Analysis of signaling pathways contributing to neurodegeneration.
  • Examination of proteostasis mechanisms and aggregate formation.

Main Results:

  • Mutant huntingtin protein expression drives toxic events.
  • Age-dependent loss of proteostasis is critical for aggregate formation.
  • Specific signaling pathways are implicated in neuronal death.

Conclusions:

  • Understanding signaling pathways and proteostasis is key to HD research.
  • Pharmacological targeting of identified molecular pathways offers therapeutic potential.
  • Further research into HD pathogenesis can lead to effective treatments.

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