Next-generation models and genetic therapies for rare neuromuscular diseases
Muscular dystrophies are severe genetic disorders characterised by muscle wasting, impaired mobility and premature death, which to date remain incurable. Although preclinical and clinical evidence position genetic therapies amongs...
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Descripción del proyecto
Muscular dystrophies are severe genetic disorders characterised by muscle wasting, impaired mobility and premature death, which to date remain incurable. Although preclinical and clinical evidence position genetic therapies amongst the key emerging treatments for several genetic conditions, no gene therapy or genome editing strategy has been approved for any muscular dystrophies yet. The lack of robust, human(ised) models enabling precise development of such advanced therapies is a major barrier towards their clinical translation for muscle diseases. To overcome this limitation, we have assembled the multidisciplinary MAGIC consortium to build novel, high-fidelity, models of human skeletal muscle pathophysiology which will be used to develop new vectors for safe and efficacious neuromuscular gene therapy and genome editing. Specific rare (paediatric) diseases targeted by our consortium are Duchenne muscular dystrophy (DMD), X-linked (XLCNM), autosomal dominant (ADCNM) and autosomal recessive (ARCNM) centronuclear myopathies (CNMs), LMNA- and COL6-related congenital muscular dystrophies (CMDs). Microfabrication, microfluidics and human stem cell differentiation technologies will be used to generate disease-specific human myofiber- and muscle-on-chip devices qualified for commercialisation, capable of screening toxicity and cell-specificity of new adeno-associated viral vector (AAV) capsid variants, and unique muscle-specific lentiviruses. Selected vectors will be equipped with novel lineage-specific regulatory elements to further restrict transgene expression to myofibres, muscle stem cells or interstitial fibroblasts, reducing also potential immunogenicity. The same vectors will be loaded with therapeutic genes or with new mutation-independent (for DMD and XLCNM) or mutation-specific (for LMNA- and COL6-CMD) gene editing tools, which will then be validated in dystrophic rodents. Finally, GMP-compatible batches of the top performing vectors will undergo advanced preclinical testing in large animals, preparing them for future clinical translation.