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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Immunology
2016 ; 147
(4
): 476-87
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gab.com Text
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English Wikipedia
Gfi1, a transcriptional repressor, inhibits the induction of the T helper type 1
programme in activated CD4 T cells
#MMPMID26749286
Suzuki J
; Maruyama S
; Tamauchi H
; Kuwahara M
; Horiuchi M
; Mizuki M
; Ochi M
; Sawasaki T
; Zhu J
; Yasukawa M
; Yamashita M
Immunology
2016[Apr]; 147
(4
): 476-87
PMID26749286
show ga
A transcriptional repressor Gfi1 promotes T helper type 2 (Th2) cell development
and inhibits Th17 and inducible regulatory T-cell differentiation. However, the
role of Gfi1 in regulating Th1 cell differentiation and the Th1-type immune
response remains to be investigated. We herein demonstrate that Gfi1 inhibits the
induction of the Th1 programme in activated CD4 T cells. The activated
Gfi1-deficient CD4 T cells spontaneously develop into Th1 cells in an
interleukin-12- and interferon-?-independent manner. The increase of Th1-type
immune responses was confirmed in vivo in Gfi1-deficient mice using a murine
model of nickel allergy and delayed-type hypersensitivity (DTH). The expression
levels of Th1-related transcription factors were found to increase in
Gfi1-deficient activated CD4 T cells. Tbx21, Eomes and Runx2 were identified as
possible direct targets of Gfi1. Gfi1 binds to the Tbx21, Eomes and Runx2 gene
loci and reduces the histone H3K4 methylation levels in part by modulating Lsd1
recruitment. Together, these findings demonstrate a novel regulatory role of Gfi1
in the regulation of the Th1-type immune response.