Cited by 36Genetic Neurodegenerative DiseasesGenetics and Neurodevelopmental DisordersDNA and Nucleic Acid Chemistry

Rational selection of small molecules that increase transcription through the GAA repeats found in Friedreich's ataxia

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Grant, LaKechia, Sun, Jun, Xu, Hongzhi, Subramony, S.H., Chaires, Jonathan B., Hebert, Michael D.·2006·FEBS Letters

Abstract

Friedreich's ataxia (FRDA) is an autosomal recessive trinucleotide repeat disease with no effective therapy. Expanded GAA repeats in the first intron of the FRDA gene are thought to form unusual non‐B DNA conformations that decrease transcription and subsequently reduce levels of the encoded protein, frataxin. Frataxin plays a crucial role in iron metabolism and detoxification. To discover small molecules that increase transcription through the GAA repeat region in FRDA, we have made stable cell lines containing a portion of expanded intron 1 fused to a GFP reporter. Small molecules identified using the competition dialysis method were found to increase FRDA‐intron 1‐reporter gene expression. One of these compounds, pentamidine, increases frataxin levels in patient cells. Thus our approach can be used to detect small molecules of potential therapeutic value in FRDA.

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Crossref · 10.1016/j.febslet.2006.09.006

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Authors
Grant, L., Sun, J., Xu, H., Subramony, S. H., Chaires, J. B., & Hebert, M. D.
Affiliations
  • University of Mississippi Medical Center (US)
  • University of Louisville (US)
Corresponding author
Hebert, Michael D.
Venue
FEBS Letters
Publisher
Wiley
Published
2006-09-15
Volume
580
Issue
22
Pages
5399-5405
ISSN
  • 0014-5793 (ISSN-L)
  • 1873-3468
OpenAlex
W2055007938
Cited by
36
References
31
Citations by year
2023: 1 · 2022: 2 · 2019: 2 · 2018: 2 · 2016: 1 · 2015: 3 · 2014: 1 · 2013: 2 · 2012: 4
FWCI
1.64
Type
journal article
Language
en
Open access
Locations
  • FEBS Letters (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Friedreich's Ataxia Research Alliance
  • National Institutes of Health
  • National Cancer Institute (R01CA035635)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Genetic Neurodegenerative Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA and Nucleic Acid Chemistry
Keywords
Friedreich's ataxia, GAA repeat expansion, frataxin, transcriptional activation, small molecule screening, non-B DNA structures, intron 1, pentamidine, GFP reporter, iron metabolism
MeSH terms
Frataxin, Antifungal Agents, Cells, Cultured, Drug Evaluation, Preclinical, Friedreich Ataxia, Humans, Lymphocytes, Nucleic Acid Conformation, Pentamidine, Transcription, Genetic, Drug Design, Genes, Reporter, Trinucleotide Repeat Expansion, Iron-Binding Proteins

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