Recent advances in understanding the pathogenesis of Huntington's disease

Related Experiment Video

Updated: Oct 9, 2026

Fractionation for Resolution of Soluble and Insoluble Huntingtin Species
07:08

Fractionation for Resolution of Soluble and Insoluble Huntingtin Species

Published on: February 27, 2018

P H Reddy1, M Williams, D A Tagle

  • 1Genetics and Molecular Biology Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA.

Trends in Neurosciences
|June 4, 1999
PubMed

Insights

Huntington's disease (HD) is a neurodegenerative disorder caused by a CAG repeat expansion in the HD gene. Mutant huntingtin protein in the nucleus is key to HD pathogenesis, with ongoing research using models to find therapies.

Area of Science:

  • Neuroscience
  • Genetics
  • Molecular Biology

Background:

  • Huntington's disease (HD) is an inherited neurodegenerative disorder.
  • Characterized by involuntary movements, cognitive decline, and neuronal loss.
  • Caused by an expanded CAG trinucleotide repeat in the HD gene.

Purpose of the Study:

  • To understand the role of mutant huntingtin protein translocation to the nucleus in HD pathogenesis.
  • To explore in vitro identified huntingtin-interacting proteins and their significance in HD.
  • To leverage cellular and animal models for studying HD mechanisms and therapeutic strategies.

Main Methods:

  • Analysis of the HD gene and its encoded huntingtin protein.
  • Investigating the subcellular localization of normal versus mutant huntingtin.
  • Utilizing in vitro protein interaction studies.
  • Developing and employing cellular and animal models for HD research.

Main Results:

  • CAG repeat expansion in the HD gene correlates with HD onset and progression.
  • Mutant huntingtin protein translocates to the nucleus, unlike normal huntingtin.
  • In vitro studies have identified huntingtin-interacting proteins, though their in vivo significance is under investigation.

Conclusions:

  • Nuclear translocation of mutant huntingtin is crucial for HD pathogenesis.
  • Further research using advanced models is essential for elucidating HD mechanisms.
  • These models offer promising avenues for evaluating potential therapeutic interventions for Huntington's disease.

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