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Τρίτη 23 Οκτωβρίου 2018

SLAM family receptors in natural killer cells – Mediators of adhesion, activation and inhibition via cis and trans interactions

Publication date: Available online 22 October 2018

Source: Clinical Immunology

Author(s): Maren Claus, Doris Urlaub, Frank Fasbender, Carsten Watzl

Abstract

SLAM family receptors are important for the fine-tuning of immune reactions. Their expression is restricted to cells of hematopoietic origin and most SLAM family receptors are their own ligand. Here we review how these receptors are involved in regulating the functions of Natural Killer (NK) cells. We discuss that promoting cellular adhesion may be a main function of SLAM family receptors in NK cells. The homophilic interactions of SLAM family receptors can not only occur in trans between different cells, but also in cis on the surface of the same cell. This cis interaction additionally modulates the function of the receptors and subsequently affects the activities of NK cells. Finally, SLAM-family receptors can also mediate inhibitory signals under certain conditions. These inhibitory signals can contribute to the functional maturation of NK cells during NK cell education. Therefore, SLAM family receptors are critically involved in many aspects of NK cell functionality.



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