Abstract:
:Natural killer (NK) cells possess potent cytotoxic mechanisms that need to be tightly controlled. Here, we explored the regulation and function of GPR56/ADGRG1, an adhesion G protein-coupled receptor implicated in developmental processes and expressed distinctively in mature NK cells. Expression of GPR56 was triggered by Hobit (a homolog of Blimp-1 in T cells) and declined upon cell activation. Through studying NK cells from polymicrogyria patients with disease-causing mutations in ADGRG1, encoding GPR56, and NK-92 cells ectopically expressing the receptor, we found that GPR56 negatively regulates immediate effector functions, including production of inflammatory cytokines and cytolytic proteins, degranulation, and target cell killing. GPR56 pursues this activity by associating with the tetraspanin CD81. We conclude that GPR56 inhibits natural cytotoxicity of human NK cells.
journal_name
Cell Repjournal_title
Cell reportsauthors
Chang GW,Hsiao CC,Peng YM,Vieira Braga FA,Kragten NA,Remmerswaal EB,van de Garde MD,Straussberg R,König GM,Kostenis E,Knäuper V,Meyaard L,van Lier RA,van Gisbergen KP,Lin HH,Hamann Jdoi
10.1016/j.celrep.2016.04.053subject
Has Abstractpub_date
2016-05-24 00:00:00pages
1757-70issue
8issn
2211-1247pii
S2211-1247(16)30480-6journal_volume
15pub_type
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