Phenotypic features of genetically modified DMD-XKOXWT pigs
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View abstract on PubMed
Summary
This summary is machine-generated.Female Duchenne muscular dystrophy (DMD) carriers can develop symptoms. Female DMD carrier pigs exhibit characteristics similar to human carriers, making them a valuable large animal model for research and therapy development.
Area Of Science
- Genetics and Animal Models
- Neuromuscular Disorders
- X-linked Inheritance
Background
- Duchenne muscular dystrophy (DMD) is an X-linked neuromuscular disorder.
- Female DMD carriers may exhibit clinical symptoms like muscle weakness and heart failure.
- A suitable large animal model is needed to study DMD carrier pathophysiology and develop treatments.
Purpose Of The Study
- To characterize female DMD carrier pigs (DMD-X<sup>KO</sup>X<sup>WT</sup>) as a disease model.
- To evaluate their representativeness for human DMD carriers.
- To assess their utility in understanding disease mechanisms and therapeutic development.
Main Methods
- Generation of female DMD carrier pigs (DMD-X<sup>KO</sup>X<sup>WT</sup>) via in vitro fertilization using chimeric boar sperm.
- Longitudinal assessment of F1-F3 progeny.
- Biochemical analysis of blood creatine kinase (CK), aspartate aminotransferase, and lactate dehydrogenase.
- Histopathological and biochemical analysis of skeletal muscle and myocardial tissue for dystrophin, utrophin, and immune cell infiltration.
Main Results
- DMD-X<sup>KO</sup>X<sup>WT</sup> pigs displayed asymptomatic hyperCKemia and altered dystrophin expression in skeletal and cardiac muscles.
- Histopathological findings included skeletal muscle degeneration and myocardial lesions in adulthood.
- Sporadic death and evidence of lymphocyte and macrophage infiltration were observed.
Conclusions
- Female DMD carrier pigs (DMD-X<sup>KO</sup>X<sup>WT</sup>) recapitulate key features of human DMD carriers.
- These pigs represent a suitable large animal model for studying DMD carrier pathogenesis.
- The model can aid in developing novel therapeutic strategies for female DMD carriers.
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