alexa Myogenic reprogramming of bone marrow derived cells in a W⁴¹Dmd(mdx) deficient mouse model.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Stem Cell Research & Therapy

Author(s): Walsh S, Nygren J, Pontn A, Jovinge S

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Abstract Lack of expression of dystrophin leads to degeneration of muscle fibers and infiltration of connective and adipose tissue. Cell transplantation therapy has been proposed as a treatment for intractable muscle degenerative disorders. Several reports have demonstrated the ability of bone-marrow derived cells (BMDC) to contribute to non-haematopoietic tissues including epithelium, heart, liver, skeletal muscle and brain following transplantation by means of fusion and reprogramming. A key issue is the extent to which fusion and reprogramming can occur in vivo, particularly under conditions of myogenic deterioration.To investigate the therapeutic potential of bone marrow transplantation in monogenetic myopathy, green fluorescent protein-positive (GFP+) bone marrow cells were transplanted into non-irradiated c-kit receptor-deficient (W⁴¹) mdx mice. This model allows BMDC reconstitution in the absence of irradiation induced myeloablation. We provide the first report of BMDC fusion in a W⁴¹Dmd(mdx) deficient mouse model.In the absence of irradiation induced injury, few GFP+ cardiomyocytes and muscle fibres were detected 24 weeks post BMT. It was expected that the frequency of fusion in the hearts of W⁴¹Dmd(mdx) mice would be similar to frequencies observed in infarcted mice. Although, it is clear from this study that individual cardiomyocytes with monogenetic deficiencies can be rescued by fusion, it is as clear that in the absence of irradiation, the formation of stable and reprogrammed fusion hybrids occurs, with the current techniques, at very low levels in non-irradiated recipients.
This article was published in PLoS One and referenced in Journal of Stem Cell Research & Therapy

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