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Decidual factors and vasoactive intestinal peptide guide monocytes to higher migration, efferocytosis and wound healing in term human pregnancy
Author(s) -
Paparini Daniel Esteban,
Grasso Esteban,
Fernandez Laura del Carmen,
Merech Fátima,
WeingrillBarbano Rodrigo,
CorreaSilva Simone,
Izbizky Gustavo,
Abasolo José Ignacio,
Hauk Vanesa,
Ramhorst Rosanna,
Bevilaqcua Estela,
Pérez Leirós Claudia
Publication year - 2021
Publication title -
acta physiologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.591
H-Index - 116
eISSN - 1748-1716
pISSN - 1748-1708
DOI - 10.1111/apha.13579
Subject(s) - decidua , efferocytosis , decidual cells , stromal cell , monocyte , biology , microbiology and biotechnology , placenta , andrology , endocrinology , immunology , medicine , chemistry , macrophage , in vitro , cancer research , pregnancy , fetus , biochemistry , genetics
Aim To explore the functional profile of circulating monocytes and decidual macrophages at term human pregnancy and their contribution to tissue repair upon stimulation ex vivo with decidual factors and the vasoactive intestinal peptide (VIP). Methods Peripheral blood monocytes were isolated from pregnant and non‐pregnant volunteers and tested in vitro with decidual explants from term placenta and VIP. The effect of VIP on decidual explants and the effect of its conditioned media on monocytes or decidual macrophages isolated by magnetic beads was carried out by RT‐qPCR and ELISA for cytokines expression and release. Migration assays were performed in transwell systems. Efferocytosis was assessed in monocytes or decidual macrophages with CFSE‐labelled autologous apoptotic neutrophils and quantified by flow cytometry. Monocyte and decidual macrophages wound healing capacity was evaluated using human endometrial stromal cell monolayers. Immunohistochemistry was performed in serial tissue sections of different placentas. Results VIP is expressed in the villi as well as in trophoblast giant cells distributed within the decidua of term placenta. VIP induced the expression of antiinflmammatory markers and monocyte chemoattractant CCL2 and CCL3 in decidual tissues. Monocytes presented higher migration towards decidual explants than CD4 and CD8 cells. VIP‐conditioned monocytes displayed an enhanced efferocytosis and wound healing capacity comparable to that of decidual macrophages. Moreover limited efferocytosis of pregnant women monocytes was restored by VIP‐induced decidual factors. Conclusion Results show the conditioning of monocytes by decidual factors and VIP to sustain processes required for tissue repair and homeostasis maintenance in term placenta.