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Small molecules affecting transcription in Friedreich ataxia

Academic Article
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Overview

authors

  • Gottesfeld, Joel

publication date

  • November 2007

journal

  • Pharmacology & Therapeutics  Journal

abstract

  • This review concerns the development of small molecule therapeutics for the inherited neurodegenerative disease Friedreich ataxia (FRDA). FRDA is caused by transcriptional repression of the nuclear FXN gene, encoding the essential mitochondrial protein frataxin and accompanying loss of frataxin protein. Frataxin insufficiency leads to mitochrondrial dysfunction and progressive neurodegeneration, along with scoliosis, diabetes and cardiomyopathy. Individuals with FRDA generally die in early adulthood from the associated heart disease, the most common cause of death in FRDA. While antioxidants and iron chelators have shown promise in ameliorating the symptoms of the disease, there is no effective therapy for FRDA that addresses the cause of the disease, the loss of frataxin protein. Gene therapy and protein replacement strategies for FRDA are promising approaches; however, current technology is not sufficiently advanced to envisage treatments for FRDA coming from these approaches in the near future. Since the FXN mutation in FRDA, expanded GAA.TTC triplets in an intron, does not alter the amino acid sequence of frataxin protein, gene reactivation would be of therapeutic benefit. Thus, a number of laboratories have focused on small molecule activators of FXN gene expression as potential therapeutics, and this review summarizes the current status of these efforts, as well as the molecular basis for gene silencing in FRDA.

subject areas

  • Animals
  • Disease Models, Animal
  • Enzyme Inhibitors
  • Friedreich Ataxia
  • Gene Expression Regulation
  • Histone Deacetylase Inhibitors
  • Humans
  • Iron-Binding Proteins
  • Mice
  • Mutation
  • RNA, Messenger
  • Transcription, Genetic
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Research

keywords

  • Friedreich ataxia
  • frataxin
  • histone deacetylase inhibitor
  • polyamides
  • transcription
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Identity

International Standard Serial Number (ISSN)

  • 0163-7258

Digital Object Identifier (DOI)

  • 10.1016/j.phartnthera.2007.06.014

PubMed ID

  • 17826840
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Additional Document Info

start page

  • 236

end page

  • 248

volume

  • 116

issue

  • 2

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