The transplantation of skeletal myoblasts is being tested in various organ systems to facilitate tissue repair and regeneration. Previous studies have indicated that transplanted cells for varied reasons were not surviving in sufficient numbers following transplantation, thus negatively affecting overall therapeutic efficacy of the approach. We hypothesize that the genetic modification of myoblasts to express insulin-like growth factor 1 (IGF-1) locally may enhance the survival of transplanted cells by stimulating neo-vascularization, decreasing apoptosis, and promoting cell proliferation.
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