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- W2149372112 abstract "Fluid shear stress promotes the emergence of hematopoietic stem cells (HSCs) in the aorta–gonad–mesonephros (AGM) of the developing mouse embryo. We determined that the AGM is enriched for expression of targets of protein kinase A (PKA)–cAMP response element-binding protein (CREB), a pathway activated by fluid shear stress. By analyzing CREB genomic occupancy from chromatin-immunoprecipitation sequencing (ChIP-seq) data, we identified the bone morphogenetic protein (BMP) pathway as a potential regulator of CREB. By chemical modulation of the PKA–CREB and BMP pathways in isolated AGM VE-cadherin+ cells from mid-gestation embryos, we demonstrate that PKA–CREB regulates hematopoietic engraftment and clonogenicity of hematopoietic progenitors, and is dependent on secreted BMP ligands through the type I BMP receptor. Finally, we observed blunting of this signaling axis using Ncx1-null embryos, which lack a heartbeat and intravascular flow. Collectively, we have identified a novel PKA–CREB–BMP signaling pathway downstream of shear stress that regulates HSC emergence in the AGM via the endothelial-to-hematopoietic transition." @default.
- W2149372112 created "2016-06-24" @default.
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- W2149372112 date "2015-04-13" @default.
- W2149372112 modified "2023-10-15" @default.
- W2149372112 title "Flow-induced protein kinase A–CREB pathway acts via BMP signaling to promote HSC emergence" @default.
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- W2149372112 doi "https://doi.org/10.1084/jem.20141514" @default.
- W2149372112 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4419355" @default.
- W2149372112 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25870201" @default.
- W2149372112 hasPublicationYear "2015" @default.
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