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Umbilical cord mesenchymal stem cell-conditioned media prevent muscle atrophy by suppressing muscle atrophy-related proteins and ROS generation Animal
- Park, Chan-Mi, Kim, Mi Jin, Kim, Sun-Mi, Park, Jin-Ho, Kim, Z-Hun, Choi, Yong-Soo
- In vitro cellular & developmental biology 2016 v.52 no.1 pp. 68-76
- Western blotting, antioxidants, catalase, desmin, dexamethasone, disease models, dose response, glutathione, in vitro studies, muscles, muscular atrophy, reactive oxygen species, reverse transcriptase polymerase chain reaction, superoxide dismutase, therapeutics, umbilical cord
- The therapeutic potential of mesenchymal stem cell-conditioned medium (MSC-CM) has been reported with various types of disease models. Here, we examine the therapeutic effect of umbilical cord MSC-CM (UCMSC-CM) on muscle-related disease, using a dexamethasone (Dex)-induced muscle atrophy in vitro model. The expressions of muscle atrophy-related proteins (MuRF-1 and MAFbx) and muscle-specific proteins (desmin and myogenin) were evaluated by Western blot analysis. The level of production of reactive oxygen species (ROS) was determined using a 2′,7′-dichlorofluorescein diacetate (DCFDA) dye assay. The expression of antioxidant enzymes (copper/zinc-superoxide dismutase (Cu/Zn-SOD), manganese superoxide dismutase (MnSOD), glutathione peroxidase-1 (GPx-1), and catalase (CAT)) was verified by reverse transcription polymerase chain reaction (RT-PCR). When L6 cells were exposed to Dex, the expression of muscle atrophy-related proteins was increased by 50–70%, and the expression of muscle-specific proteins was in turn decreased by 23–40%. Conversely, when the L6 cells were co-treated with UCMSC-CM and Dex, the expression of muscle atrophy-related proteins was reduced in a UCMSC-CM dose-dependent manner and the expression of muscle-specific proteins was restored to near-normal levels. Moreover, ROS generation was effectively suppressed and the expression of antioxidant enzymes was recovered to a normal degree. These data imply that UCMSC-CM clearly has the potential to prevent muscle atrophy. Thus, our present study offers fundamental data on the potential treatment of muscle-related disease using UCMSC-CM.