Search

Chemerin is an adipocyte-secreted adipokine that regulates the differentiation and metabolism of adipose through auto-/paracrine signaling. Its function in the differentiation of multipotent myoblast cells has thus far received little attention. In this study, C2C12 myoblast cells were cultured in the medium with Chemerin, and the differentiation potential of C2C12 myoblasts was analyzed. The results showed that Chemerin increased ROS levels and TG content of C2C12 cells. At the same time, the mRNA expressions and protein concentrations of the adipogenic factors PPARγ, C/EBPα and UCP1 were up-regulated, while the muscle specific transcription factors MyoD, Myogenin and MyHC were decreased in cultured C2C12 cells. In conclusion, the adipokine Chemerin promoted the adipogenic differentiation potential and altered the fate of myoblast cells from myogenesis to adipogenesis, which contributed in part to the up-regulated adipocyte genes. Our study reveals the importance of functional Chemerin signaling in adipogenesis and in directing the differentiation of multipotent myoblast cells. [ABSTRACT FROM AUTHOR]

[Display omitted] • Effects of three flavonoids on porcine muscle stem cells were investigated. • 3,2′-DHF and QUE had better pro-proliferation and pro-differentiation, respectively. • The optimized combination of flavonoids were used in the process of cultured meat. • The contraction area of cultured meat were promoted by QUE. Stemness decline of muscle stem cells (MuSCs) is a significant problem in cultured meat processing. In the present study, three flavonoids (quercetin, icariin, and 3,2′-dihydroxyflavone) with multi concentrations were evaluated to promote the proliferation and differentiation of porcine muscle stem cells. In the proliferation phase, 3,2′-dihydroxyflavone (10 μM) significantly amplified the cells by 34% and up-regulated the expression of paired box transcription factor 7 (PAX7) by 60%, which was higher than quercetin (75 nM) and icariin (7.5 nM). In the differentiation phase, quercetin (50 nM) showed the best pro-differentiation effect and up-regulated the expression of myosin heavy chain (MYHC) by 4.73-fold compared with the control group. These results indicated that flavonoids had a significant impact on promoting the proliferation and differentiation of porcine MuSCs, and 3,2′-dihydroxyflavone (10 μM) for proliferation and quercetin (50 nM) for differentiation were the optimal combinations. [ABSTRACT FROM AUTHOR]