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Single cell transcriptional profiles of endothelial cells sorted from the hearts with ablation of Wnt/beta-catenin signaling activating cardiomyocytes and without ablation [scRNA-seq]

ABSTRACT: To understand how Wnt/β-catenin signaling-activated cardiomyocytes (β-cat ON CMs) promote coronary vessel development, we performed single-cell RNA sequencing of endothelial cells (ECs) sorted from the hearts ablated β-cat ON CMs and those from control hearts, respectively. Our analyses indicated that β-cat ON CMs regulates coronary vessel development by promoting arterialization, a step in the transition of endocardial ECs to coronary ECs.

ORGANISM(S): Danio rerio

PROVIDER: GSE223461 | GEO | 2024/08/23

REPOSITORIES: GEO

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Endocardial/endothelial angiocrines regulate cardiomyocyte development and maturation and induce features of ventricular non-compaction

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Endocardium-to-coronary artery differentiation during heart development and regeneration involves sequential roles of Bmp2 and Cxcl12/Cxcr4.

Project description:Endocardial cells lining the heart lumen are coronary vessel progenitors during embryogenesis. Re-igniting this developmental process in adults could regenerate blood vessels lost during cardiac injury, but this requires additional knowledge on molecular regulators. Here, we use mouse genetics and scRNAseq to identify novel regulators of endocardial angiogenesis and precisely assess the role of CXCL12/CXCR4 signaling. Time-specific lineage tracing demonstrated that endocardial cells differentiated in coronary endothelial cells primarily at mid-gestation. A new mouse line reporting CXCR4 activity—along with cell-specific gene deletions—revealed it was specifically required for artery morphogenesis rather than angiogenesis. Integrating scRNAseq data of endocardial-derived coronary vessels from mid- and late-gestation identified a Bmp2-expressing transitioning population specific to mid-gestation. Bmp2 stimulated endocardial angiogenesis in vitro and in injured neonatal mouse hearts. Our data shed light on how understanding the molecular mechanisms underlying endocardial angiogenesis can identify new potential therapeutic targets promoting revascularization of the injured heart.

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Regional differences in left ventricular shear stress contribute to heterogenity of the endocardial transcriptome

Project description:The role of shear stress, the frictional force of blood flow, on the endothelium has been well documented. Differences in shear stress can have profound effects on endothelial and blood vessel biology. Endothelial cells (ECs), termed endocardial ECs, line the heart chambers and are exposed to complex shear stress patterns. While it has been demonstrated that shear stress is important for heart development, little has been shown on the role of shear stress on adult ECs. 4D-MRI studies demonstrate regional differences in blood residence time. We sought to determine the effect of regional differences in endocardial shear stress on the endocardial transcriptome using RNA sequencing (RNA-seq) on 3 different regions (apex, mid-ventricle, outflow tract) from 8 adult pigs, for a total of 24 RNA-seq assays.

2015-12-31 | E-MTAB-3669 | biostudies-arrayexpress

Gene expression analysis from bulk RNA isolated from embryonic mouse hearts at time points E13.5 and E14.5 with and without disruption of endothelial Ino80

2022-07-17 | GSE154757 | GEO

In vivo endothelial transcriptional profiles of porcine coronary and iliac arteries

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2010-06-20 | E-GEOD-10938 | biostudies-arrayexpress

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