BCG-trained innate immunity leads to fetal growth restriction by altering immune cell profile in the mouse developing placenta.

Autor: Dang Y; Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 PARIS, France, Paris, France., Souchet C; Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 PARIS, France, Paris, France., Moresi F; Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 PARIS, France, Paris, France., Jeljeli M; Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 PARIS, France, Paris, France.; Service d'immunologie Biologique, AP-HP, Hôpital Universitaire Paris Centre, F-75014 Paris, France, Paris, France., Raquillet B; Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 PARIS, France, Paris, France., Nicco C; Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 PARIS, France, Paris, France., Chouzenoux S; Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 PARIS, France, Paris, France., Lagoutte I; Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 PARIS, France, Paris, France., Marcellin L; Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 PARIS, France, Paris, France.; Département de Gynécologie Obstétrique II et Médecine de la Reproduction, AP-HP, Hôpital Universitaire Paris Centre, F-75014 Paris, France, Paris, France., Batteux F; Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 PARIS, France, Paris, France.; Service d'immunologie Biologique, AP-HP, Hôpital Universitaire Paris Centre, F-75014 Paris, France, Paris, France., Doridot L; Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 PARIS, France, Paris, France.
Jazyk: angličtina
Zdroj: Journal of leukocyte biology [J Leukoc Biol] 2022 May; Vol. 111 (5), pp. 1009-1020. Date of Electronic Publication: 2021 Sep 17.
DOI: 10.1002/JLB.4A0720-458RR
Abstrakt: Trained immunity is a new concept illustrating that innate immune cells are able to undergo a long-term metabolic and epigenetic reprogramming after infection or vaccination, thus displaying either a pro- or an anti-inflammatory phenotype during a sequential unrelated challenge. Innate immune cells such as natural killer (NK) cells and macrophages constitute a large part of the decidual leukocyte population at the maternal-fetal interface, playing an important role in placental development and as such in fetal growth and development. In this study, we hypothesized that training the innate immune cells before pregnancy could have an impact on pregnancy. To test this hypothesis, we used CBA/J x DBA/2 mouse model to investigate pregnancy outcomes and leukocyte population at the maternal-fetal interface. Although we were not able to show a beneficial effect of LPS-tolerogenic training on fetal resorption, Bacillus Calmette-Guérin (BCG) training, known to prime innate immune cells to be proinflammatory, led to fetal growth restriction, without aggravating the fetal resorption rate. We also found that BCG training led to less NK cells and macrophages at the maternal-fetal interface at the early stage of placentation (E9.5), associated with a down-regulation of Ccr3 and Lif mRNA expression. This induced altered leucocyte population profile can be an explanation for the subsequent fetal growth restriction. These data suggest that preconceptional infections-induced trained immunity could influence pregnancy outcomes.
(©2021 Society for Leukocyte Biology.)
Databáze: MEDLINE
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