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Título: | Analysis of putative epigenetic regulatory elements in the FXN genomic locus |
Autor: | Fernández-Frias, Iván; Pérez-Luz, Sara; Díaz-Nido, Javier CSIC ORCID | Palabras clave: | Frataxin Friedreich’s ataxia Histone modification Epigenetic regulation and BACs |
Fecha de publicación: | 12-may-2020 | Editor: | Molecular Diversity Preservation International | Citación: | International Journal of Molecular Sciences 21 (2020) | Resumen: | Friedreich’s ataxia (FRDA) is an autosomal recessive disease caused by an abnormally expanded Guanine-Adenine-Adenine (GAA) repeat sequence within the first intron of the frataxin gene (FXN). The molecular mechanisms associated with FRDA are still poorly understood and most studies on FXN gene regulation have been focused on the region around the minimal promoter and the region in which triplet expansion occurs. Nevertheless, since there could be more epigenetic changes involved in the reduced levels of FXN transcripts, the aim of this study was to obtain a more detailed view of the possible regulatory elements by analyzing data from ENCODE and Roadmap consortia databases. This bioinformatic analysis indicated new putative regulatory regions within the FXN genomic locus, including exons, introns, and upstream and downstream regions. Moreover, the region next to the end of intron 4 is of special interest, since the enhancer signals in FRDA-affected tissues are weak or absent in this region, whilst they are strong in the rest of the analyzed tissues. Therefore, these results suggest that there could be a direct relationship between the absence of enhancer sequences in this specific region and their predisposition to be affected in this pathology. | Versión del editor: | http://dx.doi.org/10.3390/ijms21103410 | URI: | http://hdl.handle.net/10261/241139 | DOI: | 10.3390/ijms21103410 | Identificadores: | doi: 10.3390/ijms21103410 issn: 1422-0067 |
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