Sphingosine 1-phosphate (S1P) is a bioactive lysophospholipid formed by phosphorylation of sphingosine by sphingosine kinases. S1P binds to five G-protein coupled receptors designated S1P1-5 leading to cell proliferation, motility, and has a role in regulation cell shape. In addition, S1P acts as an intracellular mediator in a receptor-independent manner regulating cell survival and Ca2+ homeostasis. Sphingosine 1-phosphate fluorescein is a S1P analog with natural erythro stereochemistry labeled at the terminus of the alkyl chain with fluorescein.
Excitation/Emission: 494/521 nm
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Featured in Publications
1) Peest, U., S. C. Sensken, et al. (2008). “S1P-lyase independent clearance of extracellular sphingosine 1-phosphate after dephosphorylation and cellular uptake.” J Cell Biochem 104(3): 756-72.
2) Meissner, A., J. Yang, et al. (2012). “Tumor Necrosis Factor-α-Mediated Downregulation of the Cystic Fibrosis Transmembrane Conductance Regulator Drives Pathological Sphingosine-1-Phosphate Signaling in a Mouse Model of Heart Failure.” Circulation 125(22): 2739-2750.
3) Dickinson, A. J., et al. (2015). “Analysis of sphingosine kinase activity in single natural killer cells from peripheral blood.” Integrative Biology 7(4): 392-401.
4) Vogt, K., et al. (2018). “Release of Platelet-Derived Sphingosine-1-Phosphate Involves Multidrug Resistance Protein 4 (MRP4/ABCC4) and Is Inhibited by Statins.” Thromb Haemost 118(01): 132-142.