Huntington's disease: from huntingtin function and dysfunction to therapeutic strategies

Cell Mol Life Sci. 2006 Nov;63(22):2642-60. doi: 10.1007/s00018-006-6242-0.


Huntington's disease (HD) is a neurodegenerative disorder that usually starts in middle age and is characterized by involuntary movements (chorea), personality changes and dementia, leading to death within 10-20 years. The defective gene in HD contains a trinucleotide CAG repeat expansion within its coding region that expresses a polyglutamine repeat in the protein huntingtin. Together with the characteristic formation of aggregates in HD, aberrant protein interactions and several post-translational modifications affect huntingtin during disease progression and lead to the dysfunction and death of selective neurons in the brains of patients. The exact molecular mechanisms by which mutant huntingtin induces cell death are not completely understood but may involve the gain of new toxic functions and the loss of the beneficial properties of huntingtin. This review focuses on the cellular functions in which huntingtin is involved and how a better understanding of pathogenic pathways can lead to new therapeutic approaches.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Active Transport, Cell Nucleus
  • Animals
  • Axonal Transport
  • Axons / metabolism
  • Cell Death
  • Cell Nucleus / metabolism
  • Humans
  • Huntingtin Protein
  • Huntington Disease / metabolism*
  • Huntington Disease / pathology
  • Huntington Disease / therapy*
  • Nerve Tissue Proteins / genetics
  • Nerve Tissue Proteins / metabolism*
  • Nerve Tissue Proteins / therapeutic use
  • Neurons / cytology*
  • Nuclear Proteins / genetics
  • Nuclear Proteins / metabolism*
  • Nuclear Proteins / therapeutic use
  • Signal Transduction


  • HTT protein, human
  • Huntingtin Protein
  • Nerve Tissue Proteins
  • Nuclear Proteins