Abstract / Description of output
Hematopoietic stem cell (HSC) generation in the aorta-gonad-mesonephros region requires
HSC specification signals from the surrounding microenvironment. In zebrafish, PDGFB/
PDGFRβ signaling controls hematopoietic stem/progenitor cell (HSPC) generation and is
required in the HSC specification niche. Little is known about murine HSPC specification in
vivo and whether PDGF-B/PDGFRβ is involved. Here we show that PDGFRβ is expressed in
distinct perivascular stromal cell layers surrounding the mid-gestation dorsal aorta, and its
deletion impairs hematopoiesis. We demonstrate that PDGFRβ+ cells play a dual role in murine
hematopoiesis. They act in the aortic niche to support HSPCs, and in addition, PDGFRβ+
embryonic precursors give rise to a subset of HSPCs that persist into adulthood. These findings
provide crucial information for the controlled production of HSPCs in vitro.
HSC specification signals from the surrounding microenvironment. In zebrafish, PDGFB/
PDGFRβ signaling controls hematopoietic stem/progenitor cell (HSPC) generation and is
required in the HSC specification niche. Little is known about murine HSPC specification in
vivo and whether PDGF-B/PDGFRβ is involved. Here we show that PDGFRβ is expressed in
distinct perivascular stromal cell layers surrounding the mid-gestation dorsal aorta, and its
deletion impairs hematopoiesis. We demonstrate that PDGFRβ+ cells play a dual role in murine
hematopoiesis. They act in the aortic niche to support HSPCs, and in addition, PDGFRβ+
embryonic precursors give rise to a subset of HSPCs that persist into adulthood. These findings
provide crucial information for the controlled production of HSPCs in vitro.
Original language | English |
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Journal | Cell Reports |
Volume | 40 |
Issue number | 3 |
DOIs | |
Publication status | Published - 19 Jul 2022 |
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CRM Imaging Facility
Matthieu Vermeren (Manager)
Centre for Regenerative MedicineFacility/equipment: Facility
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Institute for Regeneration and Repair Flow Cytometry Facility
Shonna Johnston (Manager), Fiona Rossi (Manager), Claire Cryer (Other) & Ailsa Laird (Other)
Institute of Regeneration and RepairFacility/equipment: Facility