Experimental Animals
Online ISSN : 1881-7122
Print ISSN : 1341-1357
ISSN-L : 0007-5124
Elevated maternal retinoic acid-related orphan receptor-γt enhances the effect of polyinosinic-polycytidylic acid in inducing fetal loss
Saki TomeTetsuya SasakiSatoru TakahashiYosuke Takei
ジャーナル フリー

2019 年 68 巻 4 号 p. 491-497


T helper 17 (Th17) cells have been suggested to play a crucial role in various complications during pregnancy by participating in maternal immune activation (MIA). To test a possible role for Th17 cells in MIA-mediated abortion, we analyzed transgenic mice overexpressing retinoic acid receptor-related orphan receptor gamma-t (RORγt), a master regulator of IL-17 producing cell development. These mutant mice (RORγt Tg mice) exhibited a constitutive upregulation of serum IL-17A and decreased E-cadherin expression in cell–cell junctions of placental tissues. Abortion after the administration of a viral-mimicking synthetic double-stranded RNA polyinosinic–polycytidylic acid was more frequent in RORγt Tg mice than wild-type mice. These results suggest that excessive Th17 cell activity alters immune responsiveness and increases the rate of abortion during gestation.

© 2019 Japanese Association for Laboratory Animal Science
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