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2016 ; 1
(6
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Proteomics analysis reveals a Th17-prone cell population in presymptomatic
graft-versus-host disease
#MMPMID27195312
Li W
; Liu L
; Gomez A
; Zhang J
; Ramadan A
; Zhang Q
; Choi SW
; Zhang P
; Greenson JK
; Liu C
; Jiang D
; Virts E
; Kelich SL
; Chu HW
; Flynn R
; Blazar BR
; Hanenberg H
; Hanash S
; Paczesny S
JCI Insight
2016[May]; 1
(6
): ä PMID27195312
show ga
Gastrointestinal graft-versus-host-disease (GI-GVHD) is a life-threatening
complication occurring after allogeneic hematopoietic cell transplantation (HCT),
and a blood biomarker that permits stratification of HCT patients according to
their risk of developing GI-GVHD would greatly aid treatment planning. Through
in-depth, large-scale proteomic profiling of presymptomatic samples, we
identified a T cell population expressing both CD146, a cell adhesion molecule,
and CCR5, a chemokine receptor that is upregulated as early as 14 days after
transplantation in patients who develop GI-GVHD. The CD4(+)CD146(+)CCR5(+) T cell
population is Th17 prone and increased by ICOS stimulation. shRNA knockdown of
CD146 in T cells reduced their transmigration through endothelial cells, and
maraviroc, a CCR5 inhibitor, reduced chemotaxis of the CD4(+)CD146(+)CCR5(+) T
cell population toward CCL14. Mice that received CD146 shRNA-transduced human T
cells did not lose weight, showed better survival, and had fewer
CD4(+)CD146(+)CCR5(+) T cells and less pathogenic Th17 infiltration in the
intestine, even compared with mice receiving maraviroc with control shRNA-
transduced human T cells. Furthermore, the frequency of CD4(+)CD146(+)CCR5(+)
Tregs was increased in GI-GVHD patients, and these cells showed increased
plasticity toward Th17 upon ICOS stimulation. Our findings can be applied to
early risk stratification, as well as specific preventative therapeutic
strategies following HCT.