Human definitive haemogenic endothelium and arterial vascular endothelium represent distinct lineages

Andrea Ditadi; Christopher M. Sturgeon; Joanna Tober; Geneve Awong; Marion Kennedy; Amanda D. Yzaguirre; Lisa Azzola; Elizabeth S. Ng; Edouard G. Stanley; Deborah L. French; Xin Cheng; Paul Gadue; Nancy A. Speck; Andrew G. Elefanty; Gordon Keller

doi:10.1038/ncb3161

Human definitive haemogenic endothelium and arterial vascular endothelium represent distinct lineages

Andrea Ditadi, Christopher M. Sturgeon, Joanna Tober, Geneve Awong, Marion Kennedy, Amanda D. Yzaguirre, Lisa Azzola, Elizabeth S. Ng, Edouard G. Stanley, Deborah L. French, Xin Cheng, Paul Gadue, Nancy A. Speck, Andrew G. Elefanty, Gordon Keller

Research output: Contribution to journal › Article › peer-review

231 Scopus citations

Abstract

The generation of haematopoietic stem cells (HSCs) from human pluripotent stem cells (hPSCs) will depend on the accurate recapitulation of embryonic haematopoiesis. In the early embryo, HSCs develop from the haemogenic endothelium (HE) and are specified in a Notch-dependent manner through a process named endothelial-to-haematopoietic transition (EHT). As HE is associated with arteries, it is assumed that it represents a subpopulation of arterial vascular endothelium (VE). Here we demonstrate at a clonal level that hPSC-derived HE and VE represent separate lineages. HE is restricted to the CD34 + CD73 â ' CD184 â ' fraction of day 8 embryoid bodies and it undergoes a NOTCH-dependent EHT to generate RUNX1C + cells with multilineage potential. Arterial and venous VE progenitors, in contrast, segregate to the CD34 + CD73 med CD184 + and CD34 + CD73 hi CD184 â ' fractions, respectively. Together, these findings identify HE as distinct from VE and provide a platform for defining the signalling pathways that regulate their specification to functional HSCs.

Original language	English
Pages (from-to)	580-591
Number of pages	12
Journal	Nature Cell Biology
Volume	17
Issue number	5
DOIs	https://doi.org/10.1038/ncb3161
State	Published - 5 May 2015
Externally published	Yes

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Ditadi, A., Sturgeon, C. M., Tober, J., Awong, G., Kennedy, M., Yzaguirre, A. D., Azzola, L., Ng, E. S., Stanley, E. G., French, D. L., Cheng, X., Gadue, P., Speck, N. A., Elefanty, A. G., & Keller, G. (2015). Human definitive haemogenic endothelium and arterial vascular endothelium represent distinct lineages. Nature Cell Biology, 17(5), 580-591. https://doi.org/10.1038/ncb3161

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title = "Human definitive haemogenic endothelium and arterial vascular endothelium represent distinct lineages",

abstract = "The generation of haematopoietic stem cells (HSCs) from human pluripotent stem cells (hPSCs) will depend on the accurate recapitulation of embryonic haematopoiesis. In the early embryo, HSCs develop from the haemogenic endothelium (HE) and are specified in a Notch-dependent manner through a process named endothelial-to-haematopoietic transition (EHT). As HE is associated with arteries, it is assumed that it represents a subpopulation of arterial vascular endothelium (VE). Here we demonstrate at a clonal level that hPSC-derived HE and VE represent separate lineages. HE is restricted to the CD34 + CD73 {\^a} ' CD184 {\^a} ' fraction of day 8 embryoid bodies and it undergoes a NOTCH-dependent EHT to generate RUNX1C + cells with multilineage potential. Arterial and venous VE progenitors, in contrast, segregate to the CD34 + CD73 med CD184 + and CD34 + CD73 hi CD184 {\^a} ' fractions, respectively. Together, these findings identify HE as distinct from VE and provide a platform for defining the signalling pathways that regulate their specification to functional HSCs.",

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AU - Ditadi, Andrea

AU - Sturgeon, Christopher M.

AU - Tober, Joanna

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AU - Kennedy, Marion

AU - Yzaguirre, Amanda D.

AU - Azzola, Lisa

AU - Ng, Elizabeth S.

AU - Stanley, Edouard G.

AU - French, Deborah L.

AU - Cheng, Xin

AU - Gadue, Paul

AU - Speck, Nancy A.

AU - Elefanty, Andrew G.

AU - Keller, Gordon

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Human definitive haemogenic endothelium and arterial vascular endothelium represent distinct lineages

Abstract

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