Blood making: learning what to put into the dish

F1000Res. 2020 Jan 23:9:F1000 Faculty Rev-38. doi: 10.12688/f1000research.21245.1. eCollection 2020.


The generation of hematopoietic stem cells (HSCs) from pluripotent stem cell (PSC) sources is a long-standing goal that will require a comprehensive understanding of the molecular and cellular factors that determine HSC fate during embryogenesis. A precise interplay between niche components, such as the vascular, mesenchymal, primitive myeloid cells, and the nervous system provides the unique signaling milieu for the emergence of functional HSCs in the aorta-gonad-mesonephros (AGM) region. Over the last several years, the interrogation of these aspects in the embryo model and in the PSC differentiation system has provided valuable knowledge that will continue educating the design of more efficient protocols to enable the differentiation of PSCs into bona fide, functionally transplantable HSCs. Herein, we provide a synopsis of early hematopoietic development, with particular focus on the recent discoveries and remaining questions concerning AGM hematopoiesis. Moreover, we acknowledge the recent advances towards the generation of HSCs in vitro and discuss possible approaches to achieve this goal in light of the current knowledge.

Keywords: AGM; hematopoietic stem cell; hemogenic endothelium; pluripotent stem cell.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Cell Culture Techniques
  • Embryo, Mammalian
  • Gonads / cytology
  • Hematopoiesis
  • Hematopoietic Stem Cells / cytology*
  • Humans
  • Mesonephros / cytology
  • Pluripotent Stem Cells / cytology*
  • Stem Cell Niche*