In vivo clonal tracking reveals evidence of haemangioblast and haematomesoblast contribution to yolk sac haematopoiesis
- Author(s)
- Biben, C; Weber, TS; Potts, KS; Choi, J; Miles, DC; Carmagnac, A; Sargeant, T; de Graaf, CA; Fennell, KA; Farley, A; Stonehouse, OJ; Dawson, MA; Hilton, DJ; Naik, SH; Taoudi, S;
- Journal Title
- Nature Communications
- Publication Type
- Research article
- Abstract
- During embryogenesis, haematopoietic and endothelial lineages emerge closely in time and space. It is thought that the first blood and endothelium derive from a common clonal ancestor, the haemangioblast. However, investigation of candidate haemangioblasts in vitro revealed the capacity for mesenchymal differentiation, a feature more compatible with an earlier mesodermal precursor. To date, no evidence for an in vivo haemangioblast has been discovered. Using single cell RNA-Sequencing and in vivo cellular barcoding, we have unravelled the ancestral relationships that give rise to the haematopoietic lineages of the yolk sac, the endothelium, and the mesenchyme. We show that the mesodermal derivatives of the yolk sac are produced by three distinct precursors with dual-lineage outcomes: the haemangioblast, the mesenchymoangioblast, and a previously undescribed cell type: the haematomesoblast. Between E5.5 and E7.5, this trio of precursors seeds haematopoietic, endothelial, and mesenchymal trajectories.
- Publisher
- Nature Portfolio
- Keywords
- *Yolk Sac; Hematopoiesis/genetics; *Hemangioblasts; Clone Cells; Endothelium; Cell Differentiation
- Department(s)
- Laboratory Research
- PubMed ID
- 36596806
- Publisher's Version
- https://doi.org/10.1038/s41467-022-35744-x
- Open Access at Publisher's Site
https://doi.org/10.1038/s41467-022-35744-x- Terms of Use/Rights Notice
- Refer to copyright notice on published article.
Creation Date: 2023-04-04 06:09:36
Last Modified: 2023-04-17 11:53:04