PLZF induces an intravascular surveillance program mediated by long-lived LFA-1-ICAM-1 interactions

Innate-like NKT cells conspicuously accumulate within the liver microvasculature of healthy mice, crawling on the luminal side of endothelial cells, but their general recirculation pattern and the mechanism of their intravascular behavior have not been elucidated. Using parabiotic mice, we demonstra...

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Veröffentlicht in:The Journal of experimental medicine 2011-06, Vol.208 (6), p.1179-1188
Hauptverfasser: Thomas, Seddon Y, Scanlon, Seth T, Griewank, Klaus G, Constantinides, Michael G, Savage, Adam K, Barr, Kenneth A, Meng, Fanyong, Luster, Andrew D, Bendelac, Albert
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container_end_page 1188
container_issue 6
container_start_page 1179
container_title The Journal of experimental medicine
container_volume 208
creator Thomas, Seddon Y
Scanlon, Seth T
Griewank, Klaus G
Constantinides, Michael G
Savage, Adam K
Barr, Kenneth A
Meng, Fanyong
Luster, Andrew D
Bendelac, Albert
description Innate-like NKT cells conspicuously accumulate within the liver microvasculature of healthy mice, crawling on the luminal side of endothelial cells, but their general recirculation pattern and the mechanism of their intravascular behavior have not been elucidated. Using parabiotic mice, we demonstrated that, despite their intravascular location, most liver NKT cells failed to recirculate. Antibody blocking experiments established that they were retained locally through constitutive LFA-1-intercellular adhesion molecule (ICAM) 1 interactions. This unprecedented lifelong intravascular residence could be induced in conventional CD4 T cells by the sole expression of promyelocytic leukemia zinc finger (PLZF), a transcription factor specifically expressed in the NKT lineage. These findings reveal the unique genetic and biochemical pathway that underlies the innate intravascular surveillance program of NKT cells.
doi_str_mv 10.1084/jem.20102630
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source MEDLINE; EZB-FREE-00999 freely available EZB journals
subjects Animals
CD4-Positive T-Lymphocytes - cytology
Cell Adhesion
Cell Lineage
Flow Cytometry - methods
Gene Expression Regulation
Intercellular Adhesion Molecule-1 - metabolism
Kruppel-Like Transcription Factors - metabolism
Liver - blood supply
Lymphocyte Function-Associated Antigen-1 - metabolism
Mice
Mice, Inbred C57BL
Mice, Transgenic
Microcirculation
Microscopy, Fluorescence - methods
Natural Killer T-Cells - metabolism
Promyelocytic Leukemia Zinc Finger Protein
title PLZF induces an intravascular surveillance program mediated by long-lived LFA-1-ICAM-1 interactions
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