4.6 Article

The expression and role of glycans at the feto-maternal interface in humans

期刊

TISSUE & CELL
卷 73, 期 -, 页码 -

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CHURCHILL LIVINGSTONE
DOI: 10.1016/j.tice.2021.101630

关键词

Glycans; Endometrium; Placenta; Feto-maternal interface; Immunotolerance; Lectins

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  1. University of Siena, Siena, Italy

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Research shows that during pregnancy, highly glycosylated proteins are present in both the maternal endometrium and blastocyst in a specifically controlled manner, which is crucial for the implantation and development of the blastocyst. Carbohydrates play a fundamental role in cell-cell and cell-matrix recognition, and the study highlights the importance of glycan-epitopes at the feto-maternal interface in humans.
During pregnancy, both the maternal endometrium and the blastocyst have highly glycosylated proteins with glycosylations controlled in a specific manner. Carbohydrates play a fundamental role in cell-cell and cell-matrix recognition and are involved in defining the structure and integrity of tissues. The uterus' secretions, which are rich in glycoproteins and glycogen and the presence of a functional glyco-calyx on the uterine epithelium, establish a favourable milieu, which is essential for the correct implantation and subsequent development of the blastocyst. Likewise, carbohydrate residues such as fucose and sialic acid present at the placental level are determinant in creating an immuno-environment, which supports the mother's tolerance towards the fetal antigens. In this review, we explore the literature concerning the role of important glycan-epitopes at the feto-maternal interface in the human species. Moreover, we also show some unpublished interesting results on changes of glycan residues in human placenta tissues from the first trimester of pregnancy.

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