RRC ID 79143
Author Shibata S, Endo S, Nagai LAE, H Kobayashi E, Oike A, Kobayashi N, Kitamura A, Hori T, Nashimoto Y, Nakato R, Hamada H, Kaji H, Kikutake C, Suyama M, Saito M, Yaegashi N, Okae H, Arima T.
Title Modeling embryo-endometrial interface recapitulating human embryo implantation.
Journal Sci Adv
Abstract The initiation of human pregnancy is marked by the implantation of an embryo into the uterine environment; however, the underlying mechanisms remain largely elusive. To address this knowledge gap, we developed hormone-responsive endometrial organoids (EMO), termed apical-out (AO)-EMO, which emulate the in vivo architecture of endometrial tissue. The AO-EMO comprise an exposed apical epithelium surface, dense stromal cells, and a self-formed endothelial network. When cocultured with human embryonic stem cell-derived blastoids, the three-dimensional feto-maternal assembloid system recapitulates critical implantation stages, including apposition, adhesion, and invasion. Endometrial epithelial cells were subsequently disrupted by syncytial cells, which invade and fuse with endometrial stromal cells. We validated this fusion of syncytiotrophoblasts and stromal cells using human blastocysts. Our model provides a foundation for investigating embryo implantation and feto-maternal interactions, offering valuable insights for advancing reproductive medicine.
Volume 10(8)
Pages eadi4819
Published 2024-2-23
DOI 10.1126/sciadv.adi4819
PMID 38394208
PMC PMC10889356
MeSH Blastocyst Embryo Implantation* Embryo, Mammalian Endometrium* Female Humans Pregnancy Trophoblasts
Resource
DNA material CS-CA-MCS (RDB05963) pCMV-VSV-G-RSV-Rev (RDB04393) pCAG-HIVgp (RDB04394)