作者:Stefanie S. Schilson、Petra Keul、Rizwan S. Shaikh、Michael Schäfers、Bodo Levkau、Günter Haufe                                    
                                    
                                        DOI:10.1016/j.bmc.2015.01.014
                                    
                                    
                                        日期:2015.3
                                    
                                    Sphingosine-1-phosphate (S1P) influences various fundamental biological processes by interacting with a family of five G protein-coupled receptors (S1P(1-5)). FTY720, a sphingosine analogue, which was approved for treatment of relapsing forms of multiple sclerosis, is phosphorylated in vivo and acts as an agonist of four of the five S1P receptor subtypes. Starting from these lead structures we developed new agonists for the S1P(1) receptor. The biological activity was tested in vivo and promising ligands were fluorinated at different positions to identify candidates for positron emission tomography (PET) imaging after [F-18]-labelling. The radioligands shall enable the imaging of S1P(1) receptor expression in vivo and thus may serve as novel imaging markers of S1P-related diseases. (C) 2015 Elsevier Ltd. All rights reserved.