Exon 32 Skipping of Dysferlin Rescues Membrane Repair in Patients' Cells

Abstract : Dysferlinopathies are a family of disabling muscular dystrophies with LGMD2B and Miyoshi myopathy as the main phenotypes. They are associated with molecular defects in DYSF, which encodes dysferlin, a key player in sarcolemmal homeostasis. Previous investigations have suggested that exon skipping may be a promising therapy for a subset of patients with dysferlinopathies. Such an approach aims to rescue functional proteins when targeting modular proteins and specific tissues. We sought to evaluate the dysferlin functional recovery following exon 32 skipping in the cells of affected patients. Exon skipping efficacy was characterized at several levels by use of in vitro myotube formation assays and quantitative membrane repair and recovery tests. Data obtained from these assessments confirmed that dysferlin function is rescued by quasi-dysferlin expression in treated patient cells, supporting the case for a therapeutic antisense-based trial in a subset of dysferlin-deficient patients.
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Journal of Neuromuscular Diseases, IOS Press, 2015, 2 (3), pp.281-290. 〈10.3233/JND-150109〉
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Florian Barthelemy, Cedric Blouin, Nicolas Wein, Vincent Mouly, Sebastien Courrier, et al.. Exon 32 Skipping of Dysferlin Rescues Membrane Repair in Patients' Cells. Journal of Neuromuscular Diseases, IOS Press, 2015, 2 (3), pp.281-290. 〈10.3233/JND-150109〉. 〈hal-01662831〉

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