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生长激素介质(Somatomedin)C是一族血清肽中的一种。生长激素介质(简称生长介质)族含有4个肽,每一个分子量约为7,000道尔顿(daltons)。它们分为碱性的(等电点)生长介质C和中性的生长介质A。生长介质都具有促使硫化因子(Sultationfactor)与软骨蛋白多糖结合的能力,在培养基中促使细胞生长,有类似胰岛素的生物效应,与细胞膜上胰岛素受体起交叉反应,同时它有自己特殊的细胞膜受体。生长激素必须通过生长介质促使~(35)SO_4和软骨蛋白多糖结合才能使骨骼生长。
Somatomedin C is one of a family of serum peptides. The growth hormone media (referred to as growth media) family contains four peptides, each with a molecular weight of about 7,000 daltons. They are divided into basic (isoelectric point) growth medium C and neutral growth medium A. Growth media have the ability to promote the binding of Sultation factor to chondroitin, promote cell growth in the medium, have insulin-like biological effects, cross-react with insulin receptors on the cell membrane, and have their own special cell membrane Receptor. Growth hormone must promote the growth of bone through the combination of ~ (35) SO_4 and chondroitin through the growth medium.