Pregnancy trained decidual NK cells protect pregnancies from harmful Fusobacterium nucleatum infection.

Autor: Rebecca Kotzur, Shira Kahlon, Batya Isaacson, Moriya Gamliel, Yoav Charpak-Amikam, Judy Lieberman, Gilad Bachrach, Debra Goldman-Wohl, Simcha Yagel, Ofer Beharier, Ofer Mandelboim
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: PLoS Pathogens, Vol 20, Iss 1, p e1011923 (2024)
Druh dokumentu: article
ISSN: 1553-7366
1553-7374
DOI: 10.1371/journal.ppat.1011923
Popis: Natural killer cells (NKs) found during pregnancy at the maternal-fetal interface named decidual (d)NKs, show signs of education following first pregnancy, resulting in better placentation and fetus-growth, hence termed pregnancy trained dNKs (PTdNKs). Here we show that PTdNKs provide increased protection of the fetus from Fusobacterium nucleatum (FN) infection. We demonstrate that PTdNKs secrete elevated amounts of the bacteriocidal protein granulysin (GNLY) upon incubation with FN compared to dNKs derived from first pregnancies, which leads to increased killing of FN. Furthermore, we showed mechanistically that the GNLY secretion is mediated through the interaction of the FN's Fap2 protein with Gal-GalNAc present on PTdNKs. Finally, we show in vivo, using GNLY-tg mice that enhanced protection of the fetuses from FN infection is observed, as compared to wild type and that this enhance protection is NK cell dependent. Altogether, we show a new function for PTdNKs as protectors of the fetus from bacterial infection.
Databáze: Directory of Open Access Journals
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