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2014 ; 105
(2
): 150-8
Nephropedia Template TP
gab.com Text
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English Wikipedia
Role of plasmacytoid dendritic cells and inducible costimulator-positive
regulatory T cells in the immunosuppression microenvironment of gastric cancer
#MMPMID24261990
Huang XM
; Liu XS
; Lin XK
; Yu H
; Sun JY
; Liu XK
; Chen C
; Jin HL
; Zhang GE
; Shi XX
; Zhang Q
; Yu JR
Cancer Sci
2014[Feb]; 105
(2
): 150-8
PMID24261990
show ga
Regulatory T cells (Tregs) and plasmacytoid dendritic cells (pDCs) play important
roles in the immune escape of cancer. In this study, we investigated pDCs and
pDC-induced inducible costimulator (ICOS)(+) Treg populations in peripheral blood
from gastric cancer (GC) patients and healthy donors by flow cytometry. The
distribution of these cells in carcinoma tissue, peritumor tissue, and normal
gastric mucosa was detected by immunohistochemistry. Plasma and tissue
concentration of the cytokines such as interleukin-10 and transforming growth
factor-?1 were also measured. We found that the numbers of pDCs, Tregs, and
ICOS(+) Tregs in peripheral blood were increased in GC patients compared with
healthy donors. In tissue, Tregs and ICOS(+) Tregs were found distributing mainly
in carcinoma tissue, whereas pDCs were mainly found in peritumor tissue.
Moreover, the Foxp3(+) ICOS(+) /Foxp3(+) cell ratio in carcinoma and peritumor
tissue were higher than that in normal tissue. There were more ICOS(+) Tregs in
tumor and peritumor tissue of late-stage GC patients. There was a positive
correlation between pDCs and ICOS(+) Tregs in peripheral blood and peritumor
tissue from GC patients. In conclusion, pDCs may play a potential role in
recruiting ICOS(+) Tregs, and both participate in the immunosuppression
microenvironment of GC.