A 'noisy' electrical stimulation protocol favors muscle regeneration in vitro through release of endogenous ATP
| Autor: | Paola D'Andrea, Annalisa Bernareggi, Marina Sciancalepore, Paola Lorenzon, Gabriele Massaria, Alessandra Bosutti, Giuliano Taccola |
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| Přispěvatelé: | Bosutti, A., Bernareggi, A., Massaria, Gabriele, D'Andrea, P., Taccola, Giuliano, Lorenzon, P., Sciancalepore, M. |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Male Myofiber Myoblasts Skeletal Muscle Fibers Skeletal Carbenoxolone Skeletal muscle Endogeny Stimulation Biology Muscle Development Myofibers 03 medical and health sciences Mice 0302 clinical medicine Adenosine Triphosphate Satellite cells medicine Myocyte Animals Regeneration Progenitor cell Myogenin Apyrase Electromyography PAX7 Transcription Factor Cell Biology Electric Stimulation Cell biology Mice Inbred C57BL ATP 030104 developmental biology medicine.anatomical_structure 030220 oncology & carcinogenesis Differentiation Electrical stimulation Settore BIO/14 - Farmacologia Satellite cell medicine.drug |
| Popis: | An in vitro system of electrical stimulation was used to explore whether an innovative “noisy” stimulation protocol derived from human electromyographic recordings (EMGstim) could promote muscle regeneration. EMGstim was delivered to cultured mouse myofibers isolated from Flexor Digitorum Brevis, preserving their satellite cells. In response to EMGstim, immunostaining for the myogenic regulatory factor myogenin, revealed an increased percentage of elongated myogenin-positive cells surrounding the myofibers. Conditioned medium collected from EMGstim-treated cell cultures, promoted satellite cells differentiation in unstimulated myofiber cell cultures, suggesting that extracellular soluble factors could mediate the process. Interestingly, the myogenic effect of EMGstim was mimicked by exogenously applied ATP (0.1 μM), reduced by the ATP diphosphohydrolase apyrase and prevented by blocking endogenous ATP release with carbenoxolone. In conclusion, our results show that “noisy” electrical stimulations favor muscle progenitor cell differentiation most likely via the release of endogenous ATP from contracting myofibres. Our data also suggest that “noisy” stimulation protocols could be potentially more efficient than regular stimulations to promote in vivo muscle regeneration after traumatic injury or in neuropathological diseases. |
| Databáze: | OpenAIRE |
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