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Multi-exon Skipping Using Cocktail Antisense Oligonucleotides in the Canine X-linked Muscular Dystrophy
Published on: May 24, 2016
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Antisense Therapy for a Common Corneal Dystrophy Ameliorates TCF4 Repeat Expansion-Mediated Toxicity
Christina Zarouchlioti1, Beatriz Sanchez-Pintado1, Nathaniel J Hafford Tear1
1UCL Institute of Ophthalmology, London ECIV 9EL, UK.
American Journal of Human Genetics
|March 13, 2018
Summary
Fuchs endothelial corneal dystrophy (FECD) is a common disease. A new study shows that antisense oligonucleotide (ASO) therapy can reduce toxic RNA foci and aberrant splicing in FECD models, offering a potential new treatment.
Area of Science:
- Ophthalmology
- Genetics
- Molecular Biology
Background:
- Fuchs endothelial corneal dystrophy (FECD) is a common corneal disease.
- Current treatments for advanced FECD rely solely on corneal transplantation.
- Alternative therapeutic strategies are needed for FECD.
Purpose of the Study:
- To investigate the disease mechanism of FECD caused by TCF4 trinucleotide repeat expansion.
- To develop a corneal endothelial cell (CEC) model for FECD research.
- To evaluate the potential of antisense oligonucleotide (ASO) therapy for FECD.
Main Methods:
- Developed a CEC model from an FECD patient with TCF4 repeat expansion.
- Analyzed the impact of repeat expansion on nuclear RNA foci and splicing factors (MBNL1, MBNL2).
- Assessed the efficacy of ASO treatment in reducing RNA foci and aberrant splicing in the CEC model.
Main Results:
- TCF4 repeat expansion in FECD leads to nuclear RNA foci and MBNL1/MBNL2 sequestration.
- This sequestration results in altered mRNA processing and aberrant splicing.
- ASO treatment significantly reduced nuclear foci, MBNL1 recruitment, and aberrant splicing events.
Conclusions:
- The study establishes a functional CEC model for FECD.
- ASO therapy demonstrates potential for functional rescue in FECD.
- Targeted ASO therapy is a promising approach for treating FECD caused by repeat expansion.
Keywords:
Fuchs endothelial corneal dystrophyRNA toxicityantisense oligonucleotidecorneal dystrophynon-coding mutationsrepeat-expansiontranscription factor 4triplet repeat-mediated diseaseMore Related Videos
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