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Runx1 is required for the endothelial to haematopoietic cell transition but not thereafter

Open access
Chen, Michael J., Yokomizo, Tomomasa, Zeigler, Brandon M., Dzierzak, Elaine, Speck, Nancy A.·2009·Nature

Abstract

Haematopoietic stem cells (HSCs) are the founder cells of the adult haematopoietic system, and thus knowledge of the molecular program directing their generation during development is important for regenerative haematopoietic strategies. Runx1 is a pivotal transcription factor required for HSC generation in the vascular regions of the mouse conceptus—the aorta, vitelline and umbilical arteries, yolk sac and placenta. It is thought that HSCs emerge from vascular endothelial cells through the formation of intra-arterial clusters and that Runx1 functions during the transition from ‘haemogenic endothelium’ to HSCs. Here we show by conditional deletion that Runx1 activity in vascular-endothelial-cadherin-positive endothelial cells is indeed essential for intra-arterial cluster, haematopoietic progenitor and HSC formation in mice. In contrast, Runx1 is not required in cells expressing Vav1, one of the first pan-haematopoietic genes expressed in HSCs. Collectively these data show that Runx1 function is essential in endothelial cells for haematopoietic progenitor and HSC formation from the vasculature, but its requirement ends once or before Vav is expressed.

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Crossref · 10.1038/nature07619

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Metadata

Authors
Chen, M. J., Yokomizo, T., Zeigler, B. M., Dzierzak, E., & Speck, N. A.
Venue
Nature
Published
2009-02-01
Volume
457
Issue
7231
Pages
887-891
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2110918588
Cited by
1,013
References
5
FWCI
40.41
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Runx1 is required for the endothelial to haematopoietic cell transition but not thereafter. https://app.cochat.ai/papers/10.1038/nature07619
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Chen, M. J., Yokomizo, T., Zeigler, B. M., Dzierzak, E., & Speck, N. A. (2009). Runx1 is required for the endothelial to haematopoietic cell transition but not thereafter. Nature. https://doi.org/10.1038/nature07619

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.