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2017 ; 8
(3
): e2666
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IL-27 triggers IL-10 production in Th17 cells via a c-Maf/ROR?t/Blimp-1 signal to
promote the progression of endometriosis
#MMPMID28300844
Chang KK
; Liu LB
; Jin LP
; Zhang B
; Mei J
; Li H
; Wei CY
; Zhou WJ
; Zhu XY
; Shao J
; Li DJ
; Li MQ
Cell Death Dis
2017[Mar]; 8
(3
): e2666
PMID28300844
show ga
Endometriosis is an estrogen-dependent inflammatory disease. The
anti-inflammatory cytokine IL-10 is also increased in endometriosis. IL-10
production by Th17 cells is critical for limiting autoimmunity and inflammatory
responses. However, the mechanism of inducing IL-10-producing Th17 cells is still
largely unknown. The present study investigated the differentiation mechanism and
role of IL-10-producing Th17 cells in endometriosis. Here, we report that
IL-10(+)Th17 cells are significantly increased in the peritoneal fluid of women
with endometriosis, along with an elevation of IL-27, IL-6 and TGF-?. Compared
with peripheral CD4(+) T cells, endometrial CD4(+) T cells highly expressed IL-27
receptors, especially the ectopic endometrium. Under external
(2,3,7,8-tetrachlorodibenzo-p-dioxin, TCDD) and local (estrogen, IL-6 and TGF-?)
environmental regulation, IL-27 from macrophages and endometrial stromal cells
(ESCs) induces IL-10 production in Th17 cells in vitro and in vivo. This process
may be mediated through the interaction between c-musculoaponeurotic
fibrosarconna (c-Maf) and retinoic acid-related orphan receptor gamma t (ROR?t),
and associated with the upregulation of downstream B lymphocyte-induced
maturation protein-1 (Blimp-1). IL-10(+)Th17 cells, in turn, stimulate the
proliferation and implantation of ectopic lesions and accelerate the progression
of endometriosis. These results suggest that IL-27 is a pivotal regulator in
endometriotic immune tolerance by triggering Th17 cells to produce IL-10 and
promoting the rapid growth and implantation of ectopic lesions. This finding
provides a scientific basis for potential therapeutic strategies aimed at
preventing the development of endometriosis, especially for patients with high
levels of IL-10(+)Th17 cells.