Abstract
The aim of this study was to clarify the transcriptional and metabolic characteristics of C2C12 myoblasts cultured in Dulbecco's Modified Eagle Medium (DMEM) containing 20 % chicken serum (CHS) (C2C12–CHS cells) compared with C2C12 myoblasts cultured in DMEM containing 20 % fetal bovine serum (FBS) (C2C12-FBS cells). After 3 days of culture, C2C12–CHS cells showed a marked accumulation of lipid droplets, accompanied by increased expression levels of brown adipocyte-related genes (i.e., Bmp7, Prdm16, Ucp1, Cidea, Pgc1α, Cox7a1, Cox8, and β3-adorenoceptor). Furthermore, stimulation of β3-adorenoceptor by its selective agonist, mirabegron, increased the mRNA expression of Ucp1 and Pgc1α in C2C12–CHS cells. Wide-targeted metabolomic analysis performed by gas chromatography-tandem mass spectrometry revealed that the metabolic profile of C2C12–CHS cells was obviously different to that of C2C12-FBS cells. Additionally, the metabolomic analysis indicated that β3-adrenoceptor stimulation by mirabegron upregulated energy metabolism in C2C12–CHS cells as seen in brown adipocytes. These results suggest that C2C12–CHS cells may differentiate into brown adipocyte-like cells, accompanied by increased functional β3-adrenoceptor.
Published Version
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