Re-building muscle from cultured satellite cells: Novel Approaches to improve myoblast transplantation

Informazioni relative al progetto

ID dell’accordo di sovvenzione: BMH4972767

Progetto chiuso

Data di avvio 1 Maggio 1997

Data di completamento 30 Aprile 2000

Finanziato da

• Specific research, technological development and demonstration programme in the field of biomedicine and health, 1994-1998

Costo totale

Nessun dato

Contributo UE

Nessun dato

Coordinato da

Università degli Studi di Torino
Italy

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Risultati finali

Low energy laser irradiation promotes skeletal muscle regeneration

Low-energy laser (He-Ne) irradiation (LELI) was found to promote skeletal muscle regeneration in vivo. LELI has a direct effect on myogenic cells, since the same response (delayed differentiation and enhanced proliferation) was obtained in vitro upon treatment of primary rat satellite cells, of an established line of mouse satellite cells, and of satellite cells derived from single fibres cultures. The Laser effect is similar to that elicited by a true mitogenic stimulus: it is in fact mediated by activation of growth factor receptors and of the mitogen-activated protein kinase cascade, and not by the so called stress-activated protein kinases. However, in contrast to the potential oncogenicity of a mitogen, LELI is completely safe from this point of view. This technique could be potentially applied to boost muscle regeneration after an injury or surgery, or to improve myoblast transplant. -He-Ne laser irradiation (LELI) is a completely safe non-invasive procedure which was found to promote skeletal muscle regeneration in vivo. - The specific field of science or technology where LELI could find an application are Medicine (A26) or Surgery (A37), in particular, myoblasts transplant. -Currently myoblasts are considered the preferred cell type to serve as vectors for the introduction of foreign genes into patients (gene therapy) since they are easily accessible, can be grown and genetically manipulated in vitro, and, upon re-implantation, they differentiate into myotubes which are among the most long-lived cells in our bodies. -Our results show that LELI could enhance myoblasts proliferation in vitro during the expansion step or in vivo after re-implantation.