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Tissue engineering is a promising research field, which aims to create new functional muscle tissue in vitro, by utilizing the myogenic differentiation potential of human stem cells. The objective of the present study was to determine the effect of static magnetic fields (SMF), combined with the use of the myogenic differentiation enhancing hepatocyte growth factor (HGF), on human satellite cell cultures, which are one of the preferred stem cell sources in skeletal muscle tissue engineering. We performed almarBlue® proliferation assays and semi-quantitative reverse transcription polymerase chain reaction (RT-PCR) for the following myogenic markers: desmin (DES), myogenic factor 5 (MYF5), myogenic differentiation antigen 1 (MYOD1), myogenin (MYOG), myosin heavy chain (MYH) and α1 actin (ACTA1) to detect the effects on myogenic maturation. Additionally, immunohistochemical staining (ICC) and fusion index (FI) determination as independent markers of differentiation were performed on satellite cell cultures stimulated with HGF and HGF + SMF with an intensity of 80 mT. ICC verified the muscle phenotype at all time points. SMF enhanced the proliferation of satellite cell cultures treated with HGF. RT-PCR analysis, ICC and FI calculation revealed the effects of HGF/SMF on the investigated differentiation markers and stimulation with HGF and SMF verified the continuing maturation, however no significant increase in analysed markers could be detected when compared with control cultures treated with serum cessation. In conclusion, HGF or HGF + SMF stimulation of human satellite cell cultures did not lead to the desired enhancement of myogenic maturation of human satellite cell cultures compared with cell cultures stimulated with growth factor reduction.

Evaluation of the effect of static magnetic fields combined with human hepatocyte growth factor on human satellite cell cultures