Abstract
Sphingosine-1-phosphate (S1P) is a bioactive lipid mediator involved in many biological actions, including vascular homeostasis and immune cell trafficking. S1P activity is mediated by specific G protein-coupled receptors, leading to multiple physiological responses including adherens junction formation in endothelial cells. Here, we describe bioassays for rapidly assessing S1P activity in biological fluids based on ligand-induced receptor internalization in transfected HEK293 cells and consequent adherens junction formation of vascular endothelial cells.
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Acknowledgment
We are grateful to Catherine H. Liu and Shobha Thangada for their efforts to establish these bioassays. This work is supported by NIH grants HL-67330 and HL-89934.
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Obinata, H., Hla, T. (2012). Assessment of Sphingosine-1-Phosphate Activity in Biological Samples by Receptor Internalization and Adherens Junction Formation. In: Pébay, A., Turksen, K. (eds) Sphingosine-1-Phosphate. Methods in Molecular Biology, vol 874. Humana Press. https://doi.org/10.1007/978-1-61779-800-9_6
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DOI: https://doi.org/10.1007/978-1-61779-800-9_6
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