Mesenchymal stromal cells synchronize the rhythm of protein synthesis under the effect of an exogenous signal
2012
A comparative study was performed of dense 5-hour cultures of rat hepatocytes and equal-density cultures of mesenchymal stromal cells (MSC) isolated from human adipose tissue of rat bone marrow. The cells were grown on collagen-coated class slides in serum-free medium. Unlike in hepatocytes, no rhythm of protein synthesis was initially revealed in MSC, but such a rhythm manifested itself when the culture medium was supplemented with melatonin (2 nM, 5 min). The results of experiments with cytoplasmic calcium chelator BAPTA-AM and protein kinase inhibitor H7 indicate that the mechanism of protein synthesis synchronization in MSC consists in calcium-dependent phosphorylation of cell proteins.
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