作者: DEREK LEROITH , HAIM WERNER , DANA BEITNER-JOHNSON , ANDCHARLES T. ROBERTS
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摘要: I. Introduction THE insulin-like growth factors (IGFs) and their receptors binding proteins constitute a family of cellular modulators that play essential roles in the regulation development. The IGF ligands include three structurally related peptides: insulin, IGF-I, IGF-II. Unlike IGF-I IGF-II are expressed ubiquitously, albeit highly regulated manner (see reviews Refs. 1-5). biological functions IGFs mediated by transmembrane receptors, which includes IGF-II/mannose-6-phosphate (M-6-P) receptors. While receptor is primary mediator action, insulin IGF-II/M-6-P may also mediate some these (Fig. 1) (6, 7). actions modulated at least six IGF-binding (IGFBPs) found circulation extracellular compartments produced most tissues. IGFBPs capable inhibiting or enhancing I...