Abstract
Duchenne muscular dystrophy is the most common and severe form of progressive muscular dystrophy. Previous results showed an increased survival in double knockout mice (dko) when treated with adipose-derived CD146+ cells. In this study, we analyzed the effect of CD146+ cells compared to mesenchymal stem/stromal cells (MSCs) derived from the same human adipose sample when injected in the dko mouse model without immunosuppression. Both CD146+ cells and MSCs increased the survival of treated mice when compared to vehicle-injected mice, with a more prominent effect of CD146+ cells than MSCs. Both CD146+ cells and MSCs suppressed peripheral blood mononuclear cell proliferation, indicating immunomodulatory properties. Co-culture experiments showed that MSCs have a more inflammatory profile expression, and angiogenesis assay showed that CD146+ cells can improve blood vessel formation. CD146+ cells can extend survival of muscular dystrophy mice more efficiently than MSCs, possibly due to immunomodulatory and angiogenic properties. Further investigations focusing on exogenous CD146+ cell role in vivo will improve cell therapy understanding and effectiveness.
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