Abstract
RNA interference (RNAi) is a conserved mechanism for post-transcriptional gene silencing mediated by messenger RNA (mRNA) degradation. RNAi is commonly induced by synthetic siRNA or shRNA which recognizes the targeted mRNA by base pairing and leads to target-mRNA degradation. RNAi may discriminate between two sequences only differing by one nucleotide conferring a high specificity of RNAi for its target mRNA. This property was used to develop a particular therapeutic strategy called “allele-specific-RNA interference” devoted to silence the mutated allele of genes causing dominant inherited diseases without affecting the normal allele. Therapeutic benefit was now demonstrated in cells from patients and animal models, and promising results of the first phase Ib clinical trial using siRNA-based allele-specific therapy were reported in Pachyonychia Congenita, an inherited skin disorder due to dominant mutations in the Keratin 6 gene. Our purpose is to review the successes of this strategy aiming to treat dominant inherited diseases and to highlight the pitfalls to avoid.
Keywords: Allele-specific silencing, Dominant inherited diseases, Pitfalls, RNA interference, Single nucleotide substitution, Gene-based therapy.
Current Gene Therapy
Title:Therapy for Dominant Inherited Diseases by Allele-Specific RNA Interference: Successes and Pitfalls
Volume: 15 Issue: 5
Author(s): Delphine Trochet, Bernard Prudhon, Stéphane Vassilopoulos and Marc Bitoun
Affiliation:
Keywords: Allele-specific silencing, Dominant inherited diseases, Pitfalls, RNA interference, Single nucleotide substitution, Gene-based therapy.
Abstract: RNA interference (RNAi) is a conserved mechanism for post-transcriptional gene silencing mediated by messenger RNA (mRNA) degradation. RNAi is commonly induced by synthetic siRNA or shRNA which recognizes the targeted mRNA by base pairing and leads to target-mRNA degradation. RNAi may discriminate between two sequences only differing by one nucleotide conferring a high specificity of RNAi for its target mRNA. This property was used to develop a particular therapeutic strategy called “allele-specific-RNA interference” devoted to silence the mutated allele of genes causing dominant inherited diseases without affecting the normal allele. Therapeutic benefit was now demonstrated in cells from patients and animal models, and promising results of the first phase Ib clinical trial using siRNA-based allele-specific therapy were reported in Pachyonychia Congenita, an inherited skin disorder due to dominant mutations in the Keratin 6 gene. Our purpose is to review the successes of this strategy aiming to treat dominant inherited diseases and to highlight the pitfalls to avoid.
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Trochet Delphine, Prudhon Bernard, Vassilopoulos Stéphane and Bitoun Marc, Therapy for Dominant Inherited Diseases by Allele-Specific RNA Interference: Successes and Pitfalls, Current Gene Therapy 2015; 15 (5) . https://dx.doi.org/10.2174/1566523215666150812115730
DOI https://dx.doi.org/10.2174/1566523215666150812115730 |
Print ISSN 1566-5232 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5631 |
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