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Annual Review of Immunology

Volume 38, 2020

Finding a Way Out: S1P Signaling and Immune Cell Migration

Abstract

The signaling lipid sphingosine 1-phosphate (S1P) plays critical roles in an immune response. Drugs targeting S1P signaling have been remarkably successful in treatment of multiple sclerosis, and they have shown promise in clinical trials for colitis and psoriasis. One mechanism of these drugs is to block lymphocyte exit from lymph nodes, where lymphocytes are initially activated, into circulation, from which lymphocytes can reach sites of inflammation. Indeed, S1P can be considered a circulation marker, signaling to immune cells to help them find blood and lymphatic vessels, and to endothelial cells to stabilize the vasculature. That said, S1P plays pleiotropic roles in the immune response, and it will be important to build an integrated view of how S1P shapes inflammation. S1P can function so effectively because its distribution is exquisitely tightly controlled. Here we review how S1P gradients regulate immune cell exit from tissues, with particular attention to key outstanding questions in the field.

Keyword(s): autoimmunity, cell migration, sphingosine 1-phosphate
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/content/journals/10.1146/annurev-immunol-081519-083952
2020-04-26
2024-04-20
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/content/journals/10.1146/annurev-immunol-081519-083952
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Finding a Way Out: S1P Signaling and Immune Cell Migration
Annual Review of Immunology 38, 759 (2020); https://doi.org/10.1146/annurev-immunol-081519-083952
/content/journals/10.1146/annurev-immunol-081519-083952
/content/journals/10.1146/annurev-immunol-081519-083952
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