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2016 ; 7
(ä): 12171
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Human NK cell development requires CD56-mediated motility and formation of the
developmental synapse
#MMPMID27435370
Mace EM
; Gunesch JT
; Dixon A
; Orange JS
Nat Commun
2016[Jul]; 7
(ä): 12171
PMID27435370
show ga
While distinct stages of natural killer (NK) cell development have been defined,
the molecular interactions that shape human NK cell maturation are poorly
understood. Here we define intercellular interactions between developing NK cells
and stromal cells which, through contact-dependent mechanisms, promote the
generation of mature, functional human NK cells from CD34(+) precursors. We show
that developing NK cells undergo unique, developmental stage-specific sustained
and transient interactions with developmentally supportive stromal cells, and
that the relative motility of NK cells increases as they move through development
in vitro and ex vivo. These interactions include the formation of a synapse
between developing NK cells and stromal cells, which we term the developmental
synapse. Finally, we identify a role for CD56 in developmental synapse structure,
NK cell motility and NK cell development. Thus, we define the developmental
synapse leading to human NK cell functional maturation.