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Curr Top Microbiol Immunol. 2014;378:85-105. doi: 10.1007/978-3-319-05879-5_4.

S1P control of endothelial integrity.

Author information

1
Center for Vascular Biology, Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, Cornell University, New York, NY, 10165, USA.

Abstract

Sphingosine 1-phosphate (S1P), a lipid mediator produced by sphingolipid metabolism, promotes endothelial cell spreading, vascular maturation/stabilization, and barrier function. S1P is present at high concentrations in the circulatory system, whereas in tissues its levels are low. This so-called vascular S1P gradient is essential for S1P to regulate much physiological and pathophysiological progress such as the modulation of vascular permeability. Cellular sources of S1P in blood has only recently begun to be identified. In this review, we summarize the current understanding of S1P in regulating vascular integrity. In particular, we discuss the recent discovery of the endothelium-protective functions of HDL-bound S1P which is chaperoned by apolipoprotein M.

PMID:
24728594
PMCID:
PMC4240614
DOI:
10.1007/978-3-319-05879-5_4
[Indexed for MEDLINE]
Free PMC Article

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