AON-Mediated Exon Skipping to Bypass Protein Truncation in Retinal Dystrophies Due to the Recurrent CEP290 c.4723A > T Mutation. Fact or Fiction?
| العنوان: | AON-Mediated Exon Skipping to Bypass Protein Truncation in Retinal Dystrophies Due to the Recurrent CEP290 c.4723A > T Mutation. Fact or Fiction? |
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| المؤلفون: | Imad Ghazi, Isabelle Perrault, Nicolas Goudin, Jean-Michel Rozet, Josseline Kaplan, Sabine Defoort-Dhellemmes, Iris Barny, Christel Michel, Xavier Gérard |
| المصدر: | Genes, Vol 10, Iss 5, p 368 (2019) Genes, vol. 10, no. 5 |
| بيانات النشر: | MDPI AG, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | 0301 basic medicine, lcsh:QH426-470, 030105 genetics & heredity, Biology, spontaneous nonsense correction, medicine.disease_cause, 03 medical and health sciences, chemistry.chemical_compound, Exon, Genetics, medicine, Leber congenital amaurosis and allied retinal ciliopathies, Genetics (clinical), Flanders founder c.4723A >, Mutation, Cilium, Retinal, medicine.disease, Molecular biology, Exon skipping, Cilia elongation, Ciliopathy, Antigens, Neoplasm/genetics, Antigens, Neoplasm/metabolism, Cell Cycle Proteins/genetics, Cell Cycle Proteins/metabolism, Codon, Nonsense, Cytoskeletal Proteins/genetics, Cytoskeletal Proteins/metabolism, Exons/genetics, Eye Abnormalities/genetics, Eye Diseases, Hereditary/genetics, Humans, Male, Neoplasm Proteins/genetics, Oligonucleotides, Antisense/genetics, RNA Splicing, Retina/metabolism, Retinal Dystrophies/genetics, Retinal Dystrophies/physiopathology, AON-mediated exon skipping, CEP290, Flanders founder c.4723A > Leber congenital amaurosis and allied retinal ciliopathies, T nonsense mutation, lcsh:Genetics, 030104 developmental biology, chemistry, RNA splicing, Retinal Dystrophies |
| الوصف: | Mutations in CEP290 encoding a centrosomal protein important to cilia formation cause a spectrum of diseases, from isolated retinal dystrophies to multivisceral and sometimes embryo–lethal ciliopathies. In recent years, endogenous and/or selective non-canonical exon skipping of mutant exons have been documented in attenuated retinal disease cases. This observation led us to consider targeted exon skipping to bypass protein truncation resulting from a recurrent mutation in exon 36 (c.4723A > T, p.Lys1575*) causing isolated retinal ciliopathy. Here, we report two unrelated individuals (P1 and P2), carrying the mutation in homozygosity but affected with early-onset severe retinal dystrophy and congenital blindness, respectively. Studying skin-derived fibroblasts, we observed basal skipping and nonsense associated–altered splicing of exon 36, producing low (P1) and very low (P2) levels of CEP290 products. Consistent with a more severe disease, fibroblasts from P2 exhibited reduced ciliation compared to P1 cells displaying normally abundant cilia; both lines presented however significantly elongated cilia, suggesting altered axonemal trafficking. Antisense oligonucleotides (AONs)-mediated skipping of exon 36 increased the abundance of the premature termination codon (PTC)-free mRNA and protein, reduced axonemal length and improved cilia formation in P2 but not in P1 expressing higher levels of skipped mRNA, questioning AON-mediated exon skipping to treat patients carrying the recurrent c.4723A > T mutation. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2073-4425 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85d1b3289409a8e17d29649a47b30231Test https://www.mdpi.com/2073-4425/10/5/368Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....85d1b3289409a8e17d29649a47b30231 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20734425 |
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