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2016 ; 5
(7
): e1195535
Nephropedia Template TP
gab.com Text
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English Wikipedia
The immune receptor Tim-3 acts as a trafficker in a Tim-3/galectin-9 autocrine
loop in human myeloid leukemia cells
#MMPMID27622049
Gonçalves Silva I
; Rüegg L
; Gibbs BF
; Bardelli M
; Fruehwirth A
; Varani L
; Berger SM
; Fasler-Kan E
; Sumbayev VV
Oncoimmunology
2016[Jul]; 5
(7
): e1195535
PMID27622049
show ga
The immune receptor Tim-3 is often highly expressed in human acute myeloid
leukemia (AML) cells where it acts as a growth factor and inflammatory receptor.
Recently, it has been demonstrated that Tim-3 forms an autocrine loop with its
natural ligand galectin-9 in human AML cells. However, the pathophysiological
functions of Tim-3 in human AML cells remain unclear. Here, we report for the
first time that Tim-3 is required for galectin-9 secretion in human AML cells.
However, this effect is cell-type specific and was found so far to be applicable
only to myeloid (and not, for example, lymphoid) leukemia cells. We concluded
that AML cells might use Tim-3 as a trafficker for the secretion of galectin-9
which can then be possibly used to impair the anticancer activities of cytotoxic
T cells and natural killer (NK) cells.