ArticleActa neuropathologica communications2020
rAAV-related therapy fully rescues myonuclear and myofilament function in X-linked myotubular myopathy.
Article in Acta neuropathologica communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 27 citations in OpenAlex.
- Clinical, histopathological, and biomarker characterization of XLMTM and ADCNM: Operational lessons, screening and baseline data of the Unite-CNM study.Journal of neuromuscular diseases · 2026Article
- Beyond Membrane Remodeling: Organelle Crosstalk and Convergent Pathology in Centronuclear Myopathy.Muscles (Basel, Switzerland) · 2026Review
- DNM2 lipid binding drives centronuclear myopathy and represents a potential therapeutic target.JCI insight · 2026Article
- Myosin inhibition partially rescues the myofiber proteome in X-linked myotubular myopathy.JCI insight · 2025Article
- Pathogenic TNNT1 variants are associated with aberrant thin filament compliance and myofibre hyper-contractility.The Journal of physiology · 2025Article
- Congenital myopathies: pathophysiological mechanisms and promising therapies.Journal of translational medicine · 2024Review
- Aberrant myonuclear domains and impaired myofiber contractility despite marked hypertrophy in MYMK-related, Carey-Fineman-Ziter Syndrome.Acta neuropathologica communications · 2024Article
- Article
- Review
- Abnormal myosin post-translational modifications and ATP turnover time associated with human congenital myopathy-related RYR1 mutations.Acta physiologica (Oxford, England) · 2023Article
- Predominant myosin superrelaxed state in canine myocardium with naturally occurring dilated cardiomyopathy.American journal of physiology. Heart and circulatory physiology · 2023Article
- NEB mutations disrupt the super-relaxed state of myosin and remodel the muscle metabolic proteome in nemaline myopathy.Acta neuropathologica communications · 2022Article
- Molecular and cellular basis of genetically inherited skeletal muscle disorders.Nature reviews. Molecular cell biology · 2021Review
- Common Pathogenic Mechanisms in Centronuclear and Myotubular Myopathies and Latest Treatment Advances.International journal of molecular sciences · 2021Review
Corrections and comments
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Authors and funding
13 authors at 10 institutions in 5 countries.
Funding
Abstract
X-linked myotubular myopathy (XLMTM) is a life-threatening skeletal muscle disease caused by mutations in the MTM1 gene. XLMTM fibres display a population of nuclei mispositioned in the centre. In the present study, we aimed to explore whether positioning and overall distribution of nuclei affects cellular organization and contractile function, thereby contributing to muscle weakness in this disease. We also assessed whether gene therapy alters nuclear arrangement and function. We used tissue from human patients and animal models, including XLMTM dogs that had received increasing doses of recombinant AAV8 vector restoring MTM1 expression (rAAV8-cMTM1). We then used single isolated muscle fibres to analyze nuclear organization and contractile function. In addition to the expected mislocalization of nuclei in the centre of muscle fibres, a novel form of nuclear mispositioning was observed: irregular spacing between those located at the fibre periphery, and an overall increased number of nuclei, leading to dramatically smaller and inconsistent myonuclear domains. Nuclear mislocalization was associated with decreases in global nuclear synthetic activity, contractile protein content and intrinsic myofilament force production. A contractile deficit originating at the myofilaments, rather than mechanical interference by centrally positioned nuclei, was supported by experiments in regenerated mouse muscle. Systemic administration of rAAV8-cMTM1 at doses higher than 2.5 × 10
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