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Folly Beach Library
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Edgar Allan Poe/Sullivan's Island Library
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Wando Mount Pleasant Library
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Village Library
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St. Paul's/Hollywood Library
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Hurd/St. Andrews Library
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Intrahepatic and peripheral blood phenotypes of natural killer and T cells: differential surface expression of killer cell immunoglobulin-like receptors.
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- Author(s): Podhorzer, Ariel; Machicote, Andrés; Belén, Santiago; Lauferman, Leandro; Imventarza, Oscar; Montal, Silvina; Marciano, Sebastián; Galdame, Omar; Podesta, Luis G.; Fainboim, Leonardo
- Source:
Immunology. Jun2018, Vol. 154 Issue 2, p261-273. 13p. - Source:
- Additional Information
- Subject Terms:
- Abstract: Deep characterization of the frequencies, phenotypes and functionalities of liver and peripheral blood natural killer (NK), natural killer T (NKT) and T cells from healthy individuals is an essential step to further interpret changes in liver diseases. These data indicate that CCR7, a chemokine essential for cell migration through lymphoid organs, is almost absent in liver NK and T cells. CD56bright NK cells, which represent half of liver NK cells, showed lower expression of the inhibitory molecule NKG2A and an increased frequency of the activation marker NKp44. By contrast, a decrease of CD16 expression with a potential decreased capacity to perform antibody-dependent cellular cytotoxicity was the main difference between liver and peripheral blood CD56dim NK cells. Liver T cells with an effector memory or terminally differentiated phenotype showed an increased frequency of MAIT cells, T-cell receptor-γδ (TCR-γδ) T cells and TCR-αβ CD8+ cells, with few naive T cells. Most liver NK and T cells expressed the homing markers CD161 and CD244. Liver T cells revealed a unique expression pattern of killer cell immunoglobulin-like receptors (KIR) receptors, with increased degranulation ability and higher secretion of interferon-c. Hence, the liver possesses a large amount of memory and terminally differentiated CD8+ cells with a unique expression pattern of KIR activating receptors that have a potent functional capacity as well as a reduced amount of CCR7, which are unable to migrate to regional lymph nodes. These results are consistent with previous studies showing that liver T (and also NK) cells likely remain and die in the liver. [ABSTRACT FROM AUTHOR]
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