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Notch Pathway modulation in Satellite Cells of two novel mdx models

Duchenne Muscular Dystrophy patients present fast muscular degeneration due to the lack of muscle dystrophin. Therefore, research has focused on rescue dystrophin expression. However, unique cases of Golden Retriever Muscular Dystrophy dogs that had a normal lifespan and, more recently, rare Duchenne patients with a mild course raise the question: Is it possible to significantly extend motor function without dystrophin? Our findings strongly support this idea, and we found a common biochemical pathway among these unique dogs and human patients. This pathway is known as the Notch pathway, a master regulator of muscle regeneration. We investigated our findings using animal models and found beneficial effects. To fast-track this project to a novel DMD therapy, we propose investigating the molecular mechanisms of Notch modulation in dystrophic muscles and testing a pharmacological strategy. Since our approach bypasses dystrophin up-regulation, it could benefit all DMD patients independently of their specific mutation and other forms of muscular dystrophies.
Digital Object Identifier (DOI)
Grantee: Felipe de Souza Leite, PhD
Grant type: Development Grant
Award total: $210,000.00
Institution: Boston Children's Hospital
Country: USA