In November 2019, the Institute of Translational Medicine of Kunming University of Science and Technology and Shenzhen BGI Research published ground-breaking research in Science, using single-cell sequencing to study early post-implantation development in primate embryos. The study leverages MGI’s DNBSEQ™ platform and DNBelab C series portable single-cell lab for high-quality, one-stop omics analysis.
For the first time, cynomolgus embryos were successfully cultured in vitro for 20 days, enabling detailed observation of cellular proliferation, differentiation, and gene expression trajectories at seven time points. The cultured embryos displayed morphological and molecular features consistent with in vivo development, providing a reliable model for studying early primate embryogenesis.
Key findings:
- Single-cell sequencing captured differentiation trajectories of ectoderm (EPI), primitive endoderm (PE/VE/YE), trophectoderm (TE), and extraembryonic mesenchyme (EXMC), matching in vivo development.
- The study revealed dynamic trophectoderm subtypes, primitive endoderm clusters, and ectodermal cell differentiation patterns, including early and late epiblast cells.
- Pathways such as FGF and WNT were identified as critical for lineage differentiation and pluripotency maintenance.
- In vitro cultured primordial germ cell-like cells closely resembled their in vivo counterparts at the transcriptome level.
This research establishes a new platform for studying post-implantation embryo development in primates, providing a foundation for regenerative medicine, organ regeneration research, and understanding early human development. By combining cell tracking and single-cell sequencing, researchers can now map the molecular and cellular dynamics of early embryogenesis with unprecedented detail.
