首页> 外文期刊>Life sciences >AUTONOMOUS CONTROL OF EXPRESSION OF GENES FOR INSULIN-LIKE GROWTH FACTORS DURING THE PROLIFERATION AND DIFFERENTIATION OF C2C12 MOUSE MYOBLASTS IN SERUM-FREE CULTURE
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AUTONOMOUS CONTROL OF EXPRESSION OF GENES FOR INSULIN-LIKE GROWTH FACTORS DURING THE PROLIFERATION AND DIFFERENTIATION OF C2C12 MOUSE MYOBLASTS IN SERUM-FREE CULTURE

机译:C2C12小鼠成肌细胞在无血清培养物中增殖和分化过程中胰岛素样生长因子基因表达的自主控制

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摘要

The proliferation and differentiation of skeletal muscle cells in culture are usually controlled by serum components, and the differentiation can be induced by a reduction in the serum concentration. Insulin-like growth factors (IGFs) play a critical role in stimulating myoblast differentiation, and the expression of their genes is controlled by serum factors. We have found that C2Cl2 myoblasts are capable of proliferation and differentiation even in serum-free medium that dose not contain peptide mitogens. During these processes in serum-free medium, the accumulation of mRNAs for IGFs in the cells was observed; and their levels increased with concomitant increases in creatine kinase activity and myotube formation and a decrease in DNA synthesis. Thus, the present results suggest that proliferation and differentiation of C2Cl2 cells are autonomously controlled and that the increase in the expression of the IGFs may be independent of exogenous components. [References: 34]
机译:培养中骨骼肌细胞的增殖和分化通常由血清成分控制,并且分化可以通过降低血清浓度来诱导。胰岛素样生长因子(IGF)在刺激成肌细胞分化中起关键作用,其基因表达受血清因子控制。我们发现C2Cl2成肌细胞即使在不含肽促细胞分裂剂的无血清培养基中也能够增殖和分化。在无血清培养基中的这些过程中,观察到了IGFs mRNA在细胞中的积累。并且其水平随着肌酸激酶活性和肌管形成的增加以及DNA合成的减少而增加。因此,目前的结果表明,C2Cl2细胞的增殖和分化受到自主控制,并且IGFs表达的增加可能与外源成分无关。 [参考:34]

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