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Genome-Engineering Tools to Establish Accurate Reporter Cell Lines That Enable Identification of Therapeutic Strategies to Treat Friedreich's Ataxia
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2015 (English)In: Journal of Biomolecular Screening, ISSN 1087-0571, E-ISSN 1552-454X, Vol. 20, no 6, 760-767 p.Article in journal (Refereed) Published
Abstract [en]

Friedreich's ataxia is a neurodegenerative disease caused by deficiency of the mitochondrial protein frataxin. This deficiency results from expansion of a trinucleotide repeat in the first intron of the frataxin gene. Because this repeat expansion resides in an intron and hence does not alter the amino acid sequence of the frataxin protein, gene reactivation could be of therapeutic benefit. High-throughput screening for frataxin activators has so far met with limited success because current cellular models may not accurately assess endogenous frataxin gene regulation. Here we report the design and validation of genome-engineering tools that enable the generation of human cell lines that express the frataxin gene fused to a luciferase reporter gene from its endogenous locus. Performing a pilot high-throughput genomic screen in a newly established reporter cell line, we uncovered novel negative regulators of frataxin expression. Rational design of small-molecule inhibitors of the identified frataxin repressors and/or high-throughput screening of large siRNA or compound libraries with our system may yield treatments for Friedreich's ataxia.

Place, publisher, year, edition, pages
2015. Vol. 20, no 6, 760-767 p.
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Basic Medicine
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URN: urn:nbn:se:uu:diva-275816DOI: 10.1177/1087057114568071PubMedID: 25616511OAI: oai:DiVA.org:uu-275816DiVA: diva2:901327
Available from: 2016-02-07 Created: 2016-02-07 Last updated: 2017-05-10Bibliographically approved

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Punga, Tanel

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