Tridimensional visualization reveals direct communication between the embryo and glands critical for implantation

Jia Yuan, Wenbo Deng, Jeeyeon Cha, Xiaofei Sun, Jean-Paul Borg and Sudhansu. K. Dey ()
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Jia Yuan: Cincinnati Children’s Hospital Medical Center
Wenbo Deng: Cincinnati Children’s Hospital Medical Center
Jeeyeon Cha: Vanderbilt University Medical Center
Xiaofei Sun: Cincinnati Children’s Hospital Medical Center
Jean-Paul Borg: Inst Paoli-Calmettes, UMR7258 CNRS, U1068 INSERM, Cell Polarity, Cell signalling and Cancer - Equipe labellisée Ligue Contre le Cancer
Sudhansu. K. Dey: Cincinnati Children’s Hospital Medical Center

Nature Communications, 2018, vol. 9, issue 1, 1-13

Abstract: Abstract Embryo implantation is central to pregnancy success. Our previous understanding is limited by studying this phenomenon primarily in two dimensions. Here we employ 3D visualization, revealing that epithelial evaginations that form implantation chambers (crypts) consistently arise with preexisting glands, suggesting direct access of glands to embryos within the chamber. While the lobular domains of the glands become more developed, the ductal regions continue to elongate and progressively stretch following implantation. Using diapausing mice and mice with deletion of the planar cell polarity gene Vangl2 in uterine epithelial cells, we show that dynamic changes in gland topography depend on implantation-competent blastocysts and planar cell polarity. By transferring blastocyst-size beads preloaded with HB-EGF in pseudopregnant mice, we found that HB-EGF is a trigger for the communication between embryos and glands. Glands directly connecting the crypt encasing the embryo during implantation are therefore fundamental to pregnancy success.

Date: 2018
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DOI: 10.1038/s41467-018-03092-4

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