Early human hemogenic endothelium generates primitive and definitive hematopoiesis in vitro

Research output: Contribution to journalArticle

  • External authors:
  • Eva Garcia Alegria
  • Sara Menegatti
  • Muhammad Fadlullah Wilmot
  • Pablo Menendez

Abstract

The differentiation of human embryonic stem cells (hESCs) to hematopoietic lineages initiates with the specification of hemogenic endothelium, a transient specialized endothelial precursor of all blood cells. This in vitro system provides an invaluable model to dissect the emergence of hematopoiesis in human. However, the study of hematopoiesis specification is hampered by a lack of consensus in the timing of hemogenic endothelium analysis and the full hematopoietic potential of this population. Here, our data reveal a sharp decline in the hemogenic potential of endothelium populations isolated over the course of hESCs differentiation. Furthermore, by tracking the dynamic expression of CD31 and CD235a at the onset of hematopoiesis, we identified three populations of hematopoietic progenitors, representing primitive and definitive subsets that all emerge from earliest specified hemogenic endothelium. Our data establish that hemogenic endothelium populations endowed with primitive and definitive hematopoietic potential are specified simultaneously from the mesoderm in differentiating hESCs.

Bibliographical metadata

Original languageEnglish
Pages (from-to)1061-1074
Number of pages13
JournalStem Cell Reports
Volume11
Issue number5
Early online date25 Oct 2018
DOIs
Publication statusPublished - 13 Nov 2018