Abstract
Numerous preclinical studies indicate that sustained endothelial activation significantly contributes to tissue edema, perpetuates the inflammatory response, and exacerbates tissue injury ultimately resulting in organ failure. However, no specific therapies aimed at restoring endothelial function are available as yet. Sphingosine-1-phosphate (S1P) is emerging as a potent modulator of endothelial function and endothelial responses to injury. Recent studies indicate that S1PR are attractive targets to treat not only disorders of the arterial endothelium but also microvascular dysfunction caused by ischemic or inflammatory injury. In this article, we will review the current knowledge of the role of S1P and its receptors in endothelial function in health and disease, and we will discuss the therapeutic potential of targeting S1PR not only for disorders of the arterial endothelium but also the microvasculature. The therapeutic targeting of S1PR in the endothelium could help to bridge the gap between biomedical research in vascular biology and clinical practice.
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Acknowledgments
This work was supported by NIH grant HL094465 and American Heart Association grant 12GRNT12050110 (to TS), the Departments of Surgery and Emergency Medicine, Beth Israel Deaconess Medical Center, and the Department of Pathology and Laboratory Medicine, Weill Cornell Medical College.
The author would like to thank Dr. Bill Aird (Beth Israel Deaconess Medical Center) and Drs. Timothy Hla, Michael Kluk, Victoria Blaho, and Sylvain Galvani (Weill Cornell Medical College) for very helpful discussions during the preparation of the manuscript. We also thank Dr. Li Yang (Beth Israel Deaconess Medical Center) for her help with the cerebrovascular permeability studies in mice.
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Teresa Sanchez declares no conflict of interest.
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All animal studies were approved by the Beth Israel Deaconess Medical Center Institutional Animal Care and Use Committee.
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Sanchez, T. Sphingosine-1-Phosphate Signaling in Endothelial Disorders. Curr Atheroscler Rep 18, 31 (2016). https://doi.org/10.1007/s11883-016-0586-1
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DOI: https://doi.org/10.1007/s11883-016-0586-1