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2016 ; 197
(11
): 4283-4291
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Eomeshi NK Cells in Human Liver Are Long-Lived and Do Not Recirculate but Can Be
Replenished from the Circulation
#MMPMID27798170
Cuff AO
; Robertson FP
; Stegmann KA
; Pallett LJ
; Maini MK
; Davidson BR
; Male V
J Immunol
2016[Dec]; 197
(11
): 4283-4291
PMID27798170
show ga
Human liver contains an Eomes(hi) population of NK cells that is not present in
the blood. In this study, we show that these cells are characterized by a
molecular signature that mediates their retention in the liver. By examining
liver transplants where donors and recipients are HLA mismatched, we distinguish
between donor liver-derived and recipient-derived leukocytes to show that
Eomes(lo) NK cells circulate freely whereas Eomes(hi) NK cells are unable to
leave the liver. Furthermore, Eomes(hi) NK cells are retained in the liver for up
to 13 y. Therefore, Eomes(hi) NK cells are long-lived liver-resident cells. We go
on to show that Eomes(hi) NK cells can be recruited from the circulation during
adult life and that circulating Eomes(lo) NK cells are able to upregulate Eomes
and molecules mediating liver retention under cytokine conditions similar to
those in the liver. This suggests that circulating NK cells are a precursor of
their liver-resident counterparts.