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Review
. 2019 Feb;36(2):189-198.
doi: 10.1007/s10815-018-1343-x. Epub 2018 Oct 25.

Extracellular vesicle mediated embryo-endometrial cross talk during implantation and in pregnancy

Noble K Kurian  1 , Deepak Modi  2
Affiliations
Review

Extracellular vesicle mediated embryo-endometrial cross talk during implantation and in pregnancy

Noble K Kurian et al. J Assist Reprod Genet. 2019 Feb.

Abstract

Extracellular vesicles are lipoproteinaceous membrane-enclosed nanometer-sized structures produced by cells and are thought to mediate cellular communications. Loaded with a specific set of miRNA and protein depending on their tissue of origin, these extracellular vesicles modulate diverse set of biological processes in their target tissues. In recent years, data has gathered on the roles of extracellular vesicles in embryo implantation and pregnancy. Embryo, oviduct, endometrial epithelium and stroma/decidua derived vesicles interact with trophoblast cells and promote their growth and differentiation to aid in embryo implantation. The placental vesicles are detected in maternal circulation that aids in feto-maternal immune tolerance, their levels vary in women with pregnancy-related complications like preeclampsia. Beyond the host, the microbes in the genital tract are also reported to produce extracellular vesicles which are thought to be responsible for inflammation and preterm births. This review focuses on the extracellular vesicular trafficking involved in success of pregnancy.

Keywords: Cross talk; Embryo; Exosomes; Extracellular vesicles; Implantation; Infection; Pregnancy.

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Figures

Fig. 1
Fig. 1
Timeline for studies on the role of extracellular vesicles in cell-cell communication during pregnancy
Fig. 2
Fig. 2
Extracellular vesicles (EVs) mediated embryo-endometrial cross talk for embryo implantation. EVs are produced by a variety of cell types from the embryo and endometrium. They carry specific cargoes and are internalized by the target tissues. They can have autocrine and paracrine effects. The embryo and endometrial EVs seem to aid in trophoblast adhesion and migration to promote implantation. In addition, the stromal EVs might control proliferation and angiogenesis
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