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Cross-talk at the crossroads of sphingosine-1-phosphate, growth factors, and cytokine signaling Lebman DA; Spiegel SJ Lipid Res 2008[Jul]; 49 (7): 1388-94Sphingosine-1-phosphate (S1P) is a bioactive sphingolipid that mediates a wide array of biologic effects through its interaction with a family of five G protein-coupled receptors. Cytokines and growth factors interact with this signaling pathway in a variety of ways, including both activation and regulation of the expression of the enzymes that regulate synthesis and degradation of S1P. Not only do many growth factors and cytokines stimulate S1P production, leading to transactivation of S1P receptors, ligation of S1P receptors by S1P can also transactivate growth factor tyrosine kinase receptors and stimulate growth factor and cytokine signaling cascades. This review discusses the mechanisms involved in cross-talk between S1P, cytokines, and growth factors and the impact of that cross-talk on cell signaling and cell biology.|*Receptor Cross-Talk[MESH]|*Signal Transduction[MESH]|Animals[MESH]|Cytokines/*metabolism[MESH]|Humans[MESH]|Intercellular Signaling Peptides and Proteins/*metabolism[MESH]|Lysophospholipids/*metabolism[MESH]|Protein Binding[MESH]|Sphingosine/*analogs & derivatives/metabolism[MESH] |
