Cell Research, volume 33, issue 9, pages 661-678

Dissecting peri-implantation development using cultured human embryos and embryo-like assembloids

Zongyong Ai 1, 2, 3
Baohua Niu 1, 2
Yu Yin 1, 2, 3
Lifeng Xiang 4
Gaohui Shi 1, 2
Kui Duan 1, 2, 3
Sile Wang 1, 2, 3
Yingjie Hu 1, 2
Chi Zhang 1, 2
Chengting Zhang 1, 2, 3
Lujuan Rong 1, 2
Ruize Kong 4
Tingwei Chen 1, 2
Yixin Guo 5
Wanlu Liu 5
Nan Li 1, 2
Shumei Zhao 1, 2, 3
Xiaoqing Zhu 1, 2, 3
Xuancheng Mai 4
Yonggang Li 4
Ze Wu 4
Yi Zheng 6
Jianping Fu 6, 7, 8
Weizhi Ji 1, 2, 3
Tianqing Li 1, 2, 3
Show full list: 25 authors
Publication typeJournal Article
Publication date2023-07-17
Journal: Cell Research
scimago Q1
SJR9.506
CiteScore53.9
Impact factor28.1
ISSN10010602, 17487838
Molecular Biology
Cell Biology
Abstract

Studies of cultured embryos have provided insights into human peri-implantation development. However, detailed knowledge of peri-implantation lineage development as well as underlying mechanisms remains obscure. Using 3D-cultured human embryos, herein we report a complete cell atlas of the early post-implantation lineages and decipher cellular composition and gene signatures of the epiblast and hypoblast derivatives. In addition, we develop an embryo-like assembloid (E-assembloid) by assembling naive hESCs and extraembryonic cells. Using human embryos and E-assembloids, we reveal that WNT, BMP and Nodal signaling pathways synergistically, but functionally differently, orchestrate human peri-implantation lineage development. Specially, we dissect mechanisms underlying extraembryonic mesoderm and extraembryonic endoderm specifications. Finally, an improved E-assembloid is developed to recapitulate the epiblast and hypoblast development and tissue architectures in the pre-gastrulation human embryo. Our findings provide insights into human peri-implantation development, and the E-assembloid offers a useful model to disentangle cellular behaviors and signaling interactions that drive human embryogenesis.

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