Author
Listed:
- Carlos O. Lizama
(Cardiovascular Research Institute, University of California, San Francisco)
- John S. Hawkins
(Cardiovascular Research Institute, University of California, San Francisco)
- Christopher E. Schmitt
(Cardiovascular Research Institute, University of California, San Francisco)
- Frank L. Bos
(Cardiovascular Research Institute, University of California, San Francisco)
- Joan P. Zape
(Cardiovascular Research Institute, University of California, San Francisco)
- Kelly M. Cautivo
(Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile)
- Hugo Borges Pinto
(Burke Medical Research Institute
Brain and Mind Research Institute, Weill Cornell Medical College
Weill Cornell Medical College)
- Alexander M. Rhyner
(Baylor College of Medicine
Cardiovascular Research Institute, Baylor College of Medicine)
- Hui Yu
(Cardiovascular Research Institute, University of California, San Francisco)
- Mary E. Donohoe
(Burke Medical Research Institute
Brain and Mind Research Institute, Weill Cornell Medical College
Weill Cornell Medical College)
- Joshua D. Wythe
(Baylor College of Medicine
Cardiovascular Research Institute, Baylor College of Medicine)
- Ann C. Zovein
(Cardiovascular Research Institute, University of California, San Francisco
School of Medicine, University of California, San Francisco)
Abstract
Changes in cell fate and identity are essential for endothelial-to-haematopoietic transition (EHT), an embryonic process that generates the first adult populations of haematopoietic stem cells (HSCs) from hemogenic endothelial cells. Dissecting EHT regulation is a critical step towards the production of in vitro derived HSCs. Yet, we do not know how distinct endothelial and haematopoietic fates are parsed during the transition. Here we show that genes required for arterial identity function later to repress haematopoietic fate. Tissue-specific, temporally controlled, genetic loss of arterial genes (Sox17 and Notch1) during EHT results in increased production of haematopoietic cells due to loss of Sox17-mediated repression of haematopoietic transcription factors (Runx1 and Gata2). However, the increase in EHT can be abrogated by increased Notch signalling. These findings demonstrate that the endothelial haematopoietic fate switch is actively repressed in a population of endothelial cells, and that derepression of these programs augments haematopoietic output.
Suggested Citation
Carlos O. Lizama & John S. Hawkins & Christopher E. Schmitt & Frank L. Bos & Joan P. Zape & Kelly M. Cautivo & Hugo Borges Pinto & Alexander M. Rhyner & Hui Yu & Mary E. Donohoe & Joshua D. Wythe & An, 2015.
"Repression of arterial genes in hemogenic endothelium is sufficient for haematopoietic fate acquisition,"
Nature Communications, Nature, vol. 6(1), pages 1-10, November.
Handle:
RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms8739
DOI: 10.1038/ncomms8739
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