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Πέμπτη 2 Μαρτίου 2017

PSGL-1: A New Player in the Immune Checkpoint Landscape

Publication date: Available online 2 March 2017
Source:Trends in Immunology
Author(s): Roberto Tinoco, Dennis C. Otero, Amy A. Takahashi, Linda M. Bradley
P-selectin glycoprotein ligand-1 (PSGL-1) has long been studied as an adhesion molecule involved in immune cell trafficking and is recognized as a regulator of many facets of immune responses by myeloid cells. PSGL-1 also regulates T cell migration during homeostasis and inflammatory settings. However, recent findings indicate that PSGL-1 can also negatively regulate T cell function. Because T cell differentiation is finely tuned by multiple positive and negative regulatory signals that appropriately scale the magnitude of the immune response, PSGL-1 has emerged as an important checkpoint during this process. We summarize what is known regarding PSGL-1 structure and function and highlight how it may act as an immune checkpoint inhibitor in T cells.



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