scholarly journals Transduction of myogenic cells by retargeted dual high-capacity hybrid viral vectors: robust dystrophin synthesis in duchenne muscular dystrophy muscle cells

2006 ◽  
Vol 13 (5) ◽  
pp. 976-986 ◽  
Author(s):  
Manuel A.F.V. Gonçalves ◽  
Maarten Holkers ◽  
Christophe Cudré-Mauroux ◽  
Gijsbert P. van Nierop ◽  
Shoshan Knaän-Shanzer ◽  
...  
2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Menglong Chen ◽  
Hui Shi ◽  
Shixue Gou ◽  
Xiaomin Wang ◽  
Lei Li ◽  
...  

Abstract Background Mutations in the DMD gene encoding dystrophin—a critical structural element in muscle cells—cause Duchenne muscular dystrophy (DMD), which is the most common fatal genetic disease. Clustered regularly interspaced short palindromic repeat (CRISPR)-mediated gene editing is a promising strategy for permanently curing DMD. Methods In this study, we developed a novel strategy for reframing DMD mutations via CRISPR-mediated large-scale excision of exons 46–54. We compared this approach with other DMD rescue strategies by using DMD patient-derived primary muscle-derived stem cells (DMD-MDSCs). Furthermore, a patient-derived xenograft (PDX) DMD mouse model was established by transplanting DMD-MDSCs into immunodeficient mice. CRISPR gene editing components were intramuscularly delivered into the mouse model by adeno-associated virus vectors. Results Results demonstrated that the large-scale excision of mutant DMD exons showed high efficiency in restoring dystrophin protein expression. We also confirmed that CRISPR from Prevotella and Francisella 1(Cas12a)-mediated genome editing could correct DMD mutation with the same efficiency as CRISPR-associated protein 9 (Cas9). In addition, more than 10% human DMD muscle fibers expressed dystrophin in the PDX DMD mouse model after treated by the large-scale excision strategies. The restored dystrophin in vivo was functional as demonstrated by the expression of the dystrophin glycoprotein complex member β-dystroglycan. Conclusions We demonstrated that the clinically relevant CRISPR/Cas9 could restore dystrophin in human muscle cells in vivo in the PDX DMD mouse model. This study demonstrated an approach for the application of gene therapy to other genetic diseases.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Junio Dort ◽  
Zakaria Orfi ◽  
Paul Fabre ◽  
Thomas Molina ◽  
Talita C. Conte ◽  
...  

AbstractLack of dystrophin causes muscle degeneration, which is exacerbated by chronic inflammation and reduced regenerative capacity of muscle stem cells in Duchenne Muscular Dystrophy (DMD). To date, glucocorticoids remain the gold standard for the treatment of DMD. These drugs are able to slow down the progression of the disease and increase lifespan by dampening the chronic and excessive inflammatory process; however, they also have numerous harmful side effects that hamper their therapeutic potential. Here, we investigated Resolvin-D2 as a new therapeutic alternative having the potential to target multiple key features contributing to the disease progression. Our in vitro findings showed that Resolvin-D2 promotes the switch of macrophages toward their anti-inflammatory phenotype and increases their secretion of pro-myogenic factors. Moreover, Resolvin-D2 directly targets myogenic cells and promotes their differentiation and the expansion of the pool of myogenic progenitor cells leading to increased myogenesis. These effects are ablated when the receptor Gpr18 is knocked-out, knocked-down, or blocked by the pharmacological antagonist O-1918. Using different mouse models of DMD, we showed that Resolvin-D2 targets both inflammation and myogenesis leading to enhanced muscle function compared to glucocorticoids. Overall, this preclinical study has identified a new therapeutic approach that is more potent than the gold-standard treatment for DMD.


2012 ◽  
Vol 20 (1) ◽  
pp. 168-177 ◽  
Author(s):  
Yuko Nitahara-Kasahara ◽  
Hiromi Hayashita-Kinoh ◽  
Sachiko Ohshima-Hosoyama ◽  
Hironori Okada ◽  
Michiko Wada-Maeda ◽  
...  

Neurology ◽  
1988 ◽  
Vol 38 (3) ◽  
pp. 476-476 ◽  
Author(s):  
T. Mongini ◽  
D. Ghigo ◽  
C. Doriguzzi ◽  
F. Bussolino ◽  
G. Pescarmona ◽  
...  

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Akinori Nakamura ◽  
Shin'ichi Takeda

Duchenne muscular dystrophy (DMD) is a devastating X-linked muscle disorder characterized by muscle wasting which is caused by mutations in theDMDgene. TheDMDgene encodes the sarcolemmal protein dystrophin, and loss of dystrophin causes muscle degeneration and necrosis. Thus far, therapies for this disorder are unavailable. However, various therapeutic trials based on gene therapy, exon skipping, cell therapy, read through therapy, or pharmaceutical agents have been conducted extensively. In the development of therapy as well as elucidation of pathogenesis in DMD, appropriate animal models are needed. Various animal models of DMD have been identified, and mammalian (murine, canine, and feline) models are indispensable for the examination of the mechanisms of pathogenesis and the development of therapies. Here, we review the pathological features of DMD and therapeutic applications, especially of exon skipping using antisense oligonucleotides and gene therapies using viral vectors in murine and canine models of DMD.


2003 ◽  
Vol 14 (10) ◽  
pp. 4075-4088 ◽  
Author(s):  
Daniela Volonte ◽  
Aaron J. Peoples ◽  
Ferruccio Galbiati

Caveolae are vesicular invaginations of the plasma membrane. Caveolin-3 is the principal structural component of caveolae in skeletal muscle cells in vivo. We have recently generated caveolin-3 transgenic mice and demonstrated that overexpression of wild-type caveolin-3 in skeletal muscle fibers is sufficient to induce a Duchenne-like muscular dystrophy phenotype. In addition, we have shown that caveolin-3 null mice display mild muscle fiber degeneration and T-tubule system abnormalities. These data are consistent with the mild phenotype observed in Limb-girdle muscular dystrophy-1C (LGMD-1C) in humans, characterized by a ∼95% reduction of caveolin-3 expression. Thus, caveolin-3 transgenic and null mice represent valid mouse models to study Duchenne muscular dystrophy (DMD) and LGMD-1C, respectively, in humans. Here, we derived conditionally immortalized precursor skeletal muscle cells from caveolin-3 transgenic and null mice. We show that overexpression of caveolin-3 inhibits myoblast fusion to multinucleated myotubes and lack of caveolin-3 enhances the fusion process. M-cadherin and microtubules have been proposed to mediate the fusion of myoblasts to myotubes. Interestingly, we show that M-cadherin is downregulated in caveolin-3 transgenic cells and upregulated in caveolin-3 null cells. For the first time, variations of M-cadherin expression have been linked to a muscular dystrophy phenotype. In addition, we demonstrate that microtubules are disorganized in caveolin-3 null myotubes, indicating the importance of the cytoskeleton network in mediating the phenotype observed in these cells. Taken together, these results propose caveolin-3 as a key player in myoblast fusion and suggest that defects of the fusion process may represent additional molecular mechanisms underlying the pathogenesis of DMD and LGMD-1C in humans.


Sign in / Sign up

Export Citation Format

Share Document