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2015 ; 5
(ä): 14663
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Alleviation of skin inflammation after Lin(-) cell transplantation correlates
with their differentiation into myeloid-derived suppressor cells
#MMPMID26441031
Jeong Ryu S
; Ju JM
; Kim W
; Bum Kim M
; Hee Oh K
; Sup Lee D
; Lee H
; Eun Oh J
; Soo Park K
; Young Choi E
Sci Rep
2015[Oct]; 5
(ä): 14663
PMID26441031
show ga
To understand the cellular mechanism underlying the therapeutic effects exerted
by hematopoietic stem cell transplantation in the repair of tissue damage, we
investigated the in vivo dynamics of bone marrow (BM) lineage-negative (Lin(-))
cells transplanted into mice with hyper sensitivity dermatitis. Longitudinal in
vivo imaging and flow cytometry analyses revealed that Lin(-) cells home directly
to inflamed skin within 6?h, where they undergo extensive expansion with the peak
on day 14 post-transplantation, and preferential differentiation into
CD11b(+)Ly6G(int)Ly6C(+) cells by day 7. Cells with phenotypic profiles of
neutrophils, macrophages, and DCs appeared in inflamed skin on day 14. Progenies
of transplanted Lin(-) cells showed similar kinetics of expansion and myeloid
differentiation in BM. However, differentiation into CD11b(+)Ly6G(int)Ly6C(+)
cells in the inflamed skin on day 7 was more skewed toward CD115(+) cells (?60%)
with immune suppressive function and higher expression levels of iNOS, arginase,
and IL-10, compared with those in the BM. Transplantation of Lin(-) cells reduced
the levels of Cd3 transcript and CD4(+)/CD8(+) cells in inflamed skin. These
results demonstrate differentiation of transplanted Lin(-) cells into
myeloid-derived suppressor cells in inflamed skin to be the basis of the
alleviation of skin inflammation after Lin(-) cell transplantation.
|*Cell Differentiation
[MESH]
|*Hematopoietic Stem Cell Transplantation
[MESH]
|Animals
[MESH]
|Blotting, Western
[MESH]
|Bone Marrow Cells
[MESH]
|Cells, Cultured
[MESH]
|Dermatitis/etiology/pathology/*prevention & control
[MESH]