Abstract:
:Regulatory B cells (Breg cells) play critical roles in modulating immune responses during autoimmune diseases and infection. Here we explored the participation of two main Breg subsets, including IL-10+ Breg (B10) and IL-35+ Breg cells, in maintaining successful pregnancy. We first observed an elevated percentage of B10 cells in peripheral blood from first-trimester pregnant women compared with non-pregnant controls. Serum from pregnancy induced the augmentation of B10 in peripheral blood mononuclear cells from non-pregnant women. In animal models, we demonstrated that there were significant augmentation of B10 cells and obvious increase of IL-10 level in splenic B cells from normal pregnant mice compared to that in abortion-prone pregnant mice and virgin mice. Further analysis showed that both hCG and IL-35 suppressed the proliferation of mouse splenic B cells. Moreover, IL-35 induced the expansion of both mouse splenic B10 and IL-35+ Breg cells while hCG only mediated the generation of B10 cells. Subsequent study in mice demonstrated that the activation of STAT1 and STAT3 in B cells caused by IL-35 and the activation of STAT3 caused by hCG were the predominant mechanism of IL-35+ Breg and B10 cells augmentation. These findings suggested that hCG and IL-35 induced the amplification of B10 and IL-35+ Breg cells which played a vital peripheral regulatory role during pregnancy.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Liu J,Chen X,Hao S,Zhao H,Pang L,Wang L,Ren H,Wang C,Mao Hdoi
10.1016/j.yexcr.2019.111513subject
Has Abstractpub_date
2019-10-15 00:00:00pages
111513issue
2eissn
0014-4827issn
1090-2422pii
S0014-4827(19)30356-8journal_volume
383pub_type
杂志文章abstract::An implantation-competent blastocyst, several hours prior to its attachment on the uterine wall, transmits signals to surrounding uterine cells and vice-versa to initiate a two-way interaction. The language of this precocious dialogue is versatile, taking advantage of secreted molecules for long-range interactions and...
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