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首页> 外文期刊>Cell biology international. >INSULIN-LIKE GROWTH FACTORS [Review]
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INSULIN-LIKE GROWTH FACTORS [Review]

机译:胰岛素样生长因子[综述]

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摘要

The insulin-like growth factors I and II are single chain polypeptides homologous to proinsulin. IGF I and IGF II contribute to cell regulation and stimulate protein synthesis via signaling through type I receptors which are homologous to insulin receptors and activate phosphorylation cascades. IGFs enhance the proliferation of chondocytes and the proliferation of their collagen and proteoglycan matrix; IGFs stimulate longitudinal (endochondral) bone growth. Throughout life, IGFs are constitutvely expressed ubiquitous factors which help to maintain the survival of differentiated cells, Increased expression is found during growth and tissue repair, Six specific binding proteins, IGFBP 1-6, allow additional tissue compartment specific control of IGF activity; IGFBP production favours storage and IGFBP cleavage leads to activation.
机译:胰岛素样生长因子I和II是与胰岛素原同源的单链多肽。 IGF I和IGF II通过与胰岛素受体同源的I型受体发出信号并激活磷酸化级联,从而促进细胞调节并刺激蛋白质合成。 IGFs增强软骨细胞的增殖及其胶原和蛋白聚糖基质的增殖; IGF刺激纵向(软骨内)骨骼生长。在整个生命过程中,IGF都是组成型表达的普遍存在的因子,有助于维持分化细胞的存活。在生长和组织修复过程中发现表达增加。六种特异性结合蛋白IGFBP 1-6可以对IGF活性进行额外的组织区室特异性控制; IGFBP的产生有利于储存,而IGFBP的切割会导致活化。

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