Accession |
PRJCA002390 |
Title |
Reconstituting the transcriptome and DNA methylome landscapes of human implantation |
Relevance |
Medical |
Data types |
Whole genome sequencing
Transcriptome or Gene expression
Raw sequence reads
|
Organisms |
Homo sapiens
|
Description |
Implantation is a milestone event during mammalian embryogenesis. Implantation failure is a considerable cause of early pregnancy loss in humans1. Owing to the difficulty of obtaining human embryos early after implantation in vivo, it remains unclear how the gene regulatory network and epigenetic mechanisms control the implantation process. Here, by combining an in vitro culture system for the development human embryos after implantation and single-cell multi-omics sequencing technologies, more than 8,000 individual cells from 65 human peri-implantation embryos were systematically analysed. Unsupervised dimensionality reduction and clustering algorithms of the transcriptome data show stepwise implantation routes for the epiblast, primitive endoderm and trophectoderm lineages, suggesting robust preparation for the proper establishment of a mother-to-offspring connection during implantation. Female embryos showed initiation of random X chromosome inactivation based on analysis of parental allele-specific expression of X-chromosome-linked genes during implantation. Notably, using single-cell triple omics sequencing analysis, the re-methylation of the genome in cells from the primitive endoderm lineage was shown to be much slower than in cells of both epiblast and trophectoderm lineages during the implantation process, which indicates that there are distinct re-establishment features in the DNA methylome of the epiblast and primitive endoderm-even though both lineages are derived from the inner cell mass. Collectively, our work provides insights into the complex molecular mechanisms that regulate the implantation of human embryos, and helps to advance future efforts to understanding early embryonic development and reproductive medicine. |
Sample scope |
Multiisolate |
Release date |
2020-03-15 |
Publication |
PubMed ID |
Article title |
Journal name |
DOI |
Year |
31435013
|
|
|
|
|
|
Grants |
Agency |
program |
Grant ID |
Grant title |
National Natural Science Foundation of China (NSFC)
|
|
81521002
|
|
National Natural Science Foundation of China (NSFC)
|
|
31625018
|
|
National Natural Science Foundation of China (NSFC)
|
|
81730078
|
|
Beijing Municipal Science and Technology Commission
|
|
Z181100001318001
|
|
National Basic Research Program of China
|
|
2017YFA0102702
|
|
National Basic Research Program of China
|
|
018YFA0107601
|
|
|
External link |
|
Submitter |
Fuchou
Tang (tangfuchou@pku.edu.cn)
|
Organization |
Peking University |
Submission date |
2020-03-15 |