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Human receptive endometrial organoid for deciphering the implantation window

Zhao, H.; Wu, K.; Chen, Z.-J.; Zhang, Y.; Zhao, R.; Yang, C.; Song, J.; Liu, P.; Li, Y.; Liu, B.; Li, T.; Yin, C.; Lu, M.; Hou, Z.; Zhang, C.

2023-07-28 cell biology
10.1101/2023.07.27.550771 bioRxiv
Show abstract

Human endometrial receptivity is a critical determinant of pregnancy success; however, in vivo studies of its features and regulation are particularly challenging due to ethical restriction. Recently, the development of human endometrial assembloids has provided a powerful model to investigate this intricate biological process. In this study, we established a specialized human window-of-implantation (WOI) endometrial assembloid system that mimics the in vivo receptive endometrium. It not only reproduces the structural attributes of pinopodes and cilia, but also molecular characteristics of mid-secretory endometrium. Furthermore, the WOI endometrial assembloid exhibits hormone responsiveness, an energy metabolism profile characterized by larger and functionally enhanced mitochondria, increased ciliary assembly and motility, and epithelial-mesenchymal transition (EMT), as well as promising potential for embryo implantation. As such, WOI assembloids hold great promise as a platform to unravel the intricate mechanisms governing the regulation of endometrial receptivity, maternal-fetal interactions, and associated pathologies, ultimately driving impactful advancements in the field.

Published in eLife (predicted rank #3) · training set

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