Knockdown Of Apelin Receptor Reduces Cardiomyocyte Differentiation Efficiency And Contractility Of Human Embryonic Stem Cell-Derived Cardiomyocytes
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PROVIDER: PRJEB49219 | ENA |
REPOSITORIES: ENA
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Project description:AimsThe apelin receptor, a G protein-coupled receptor, has emerged as a key regulator of cardiovascular development, physiology, and disease. However, there is a lack of suitable human in vitro models to investigate the apelinergic system in cardiovascular cell types. For the first time we have used human embryonic stem cell-derived cardiomyocytes (hESC-CMs) and a novel inducible knockdown system to examine the role of the apelin receptor in both cardiomyocyte development and to determine the consequences of loss of apelin receptor function as a model of disease.Methods and resultsExpression of the apelin receptor and its ligands in hESCs and hESC-CMs was determined. hESCs carrying a tetracycline-inducible short hairpin RNA targeting the apelin receptor were generated using the sOPTiKD system. Phenotypic assays characterized the consequences of either apelin receptor knockdown before hESC-CM differentiation (early knockdown) or in 3D engineered heart tissues as a disease model (late knockdown). hESC-CMs expressed the apelin signalling system at a similar level to the adult heart. Early apelin receptor knockdown decreased cardiomyocyte differentiation efficiency and prolonged voltage sensing, associated with asynchronous contraction. Late apelin receptor knockdown had detrimental consequences on 3D engineered heart tissue contractile properties, decreasing contractility and increasing stiffness.ConclusionsWe have successfully knocked down the apelin receptor, using an inducible system, to demonstrate a key role in hESC-CM differentiation. Knockdown in 3D engineered heart tissues recapitulated the phenotype of apelin receptor down-regulation in a failing heart, providing a potential platform for modelling heart failure and testing novel therapeutic strategies.
| S-EPMC10064845 | biostudies-literature
Project description:Analysis of genes enriched in MIXL1+ sorted cells during primitive streak induction identified Apelin receptor (APLNR), a highly conserved member of the G-protein coupled receptor family. Depending upon the growth factor conditions used for differentiation, APLNR+ cells identified both posterior mesodermal and anterior mesendodermal components of the primitive streak. APLNR+ cells isolated from mesodermal differentiated cultures were enriched in hematopoietic blast colony forming cells (Bl-CFCs) and the addition of Apelin peptide enhanced the frequency and growth of both hematopoietic colonies and hESC-derived endothelial cells. These studies identified APLNR as a marker of primitive streak-like cells differentiated from hESCs and defined a novel role for Apelin as a regulator of early human hematopoiesis.
2012-02-12 | E-MEXP-3380 | biostudies-arrayexpress
Project description:First, transcriptome analysis of purified CD31+ endothelial cells (ECs) from VEGF-treated sprouting embryoid bodies showed angiogenesis as the top affected category when Apelin is not present. In addition, loss of Apelin resulted in the modulation of pathways in ECs related to vasculogenesis, cell adhesion and response to hypoxia. Ingenuity Pathway Analysis (IPA) further identified VEGFR pathway as the main upstream regulator affected in endothelial cells, closely followed by the TGFβ1 and TNF pathways, all reduced in the absence of Apelin. The most inhibited genes from the VEGFR pathway in the absence of Apelin are angiogenesis-related genes. Second, transcriptome analysis of CD31+/CD105+ ECs sorted from Apelin wild-type and Apln-depleted tumors found a significant decrease in processes associated with endothelial cell proliferation and angiogenesis in ECs sorted out of Apelin-depleted tumors using IPA. Further, IPA predicted a decrease in the adhesion of granulocytes and upstream regulator analysis showed that proteins of the TGF-superfamily, Inhibin-βA and TGF-β1, as well as C/EBP-alpha, β-Catenin, ErbB2 and EGFR are predicted to be inhibited upstream regulators in ECs isolated from Apelin-depleted tumors.
2019-05-27 | GSE100293 | GEO
Project description:The first macrophages that seed the developing heart originate from the yolk sac during fetal life. While murine studies reveal important homeostatic and reparative functions in adults, we know little about their roles in the earliest stages of human heart development due to a lack of accessible tissue. Generation of bioengineered human cardiac microtissues from pluripotent stem cells models these first steps in cardiac tissue development, however macrophages have not been included in these studies. To bridge these gaps, we differentiated human embryonic stem cells (hESCs) into primitive LYVE1+ macrophages (hESC-macrophages; akin to yolk sac macrophages) that stably engrafted within cardiac microtissues composed of hESC-cardiomyocytes and fibroblasts to study reciprocal interactions. Engraftment induced a tissue resident macrophage gene program resembling human fetal cardiac macrophages, enriched in efferocytic pathways. Functionally, hESC-macrophages induced production and maturation of cardiomyocyte sarcomeric proteins, and enhanced contractile force, relaxation kinetics, and electrical properties. Mechanistically, the primary effect of hESC-macrophages was during the stressful events surrounding early microtissue formation, where they engaged in phosphatidylserine dependent ingestion of apoptotic cardiomyocyte cargo, which reinforced core resident macrophage identity, reduced microtissue stress and drove hESC-cardiomyocytes to become more similar to human ventricular cardiomyocytes found in early development, both transcriptionally and metabolically. Inhibiting efferocytosis of hESC-cardiomyocytes by hESC-macrophages led to increased cell stress, impaired sarcomeric protein maturation and reduced cardiac microtissue function (contraction and relaxation). Taken together, macrophage-engineered human cardiac microtissues represent a considerably improved model for human heart development, and reveal a major beneficial, yet previously unappreciated role for human primitive macrophages in enhancing cardiac tissue function.
2024-04-03 | PXD050996 | Pride
Project description:Evaluation of microRNAs that are downstream of apelin/APJ signaling in the pulmonary artery endothelial cells. Triplicates per group, subjected to: 1) control siRNA, 2) apelin siRNA, 3) APJ siRNA, 4) apelin + APJ siRNA
2012-12-04 | E-GEOD-42343 | biostudies-arrayexpress
Project description:The endogenous peptide Apelin is crucial for maintaining heart function in pressure overload and aging Keywords: knockout
2007-12-25 | GSE7781 | GEO
Project description:Microarray data on H9 hESC-derived cardiomyocytes (d30) treated with 0, 0.1, 1, or 10 uM of doxorubicin for 24 h Establish effects of increasing doses of doxorubicin on control H9 hESC-derived cardiomyocytes Monolayers of cells in a 24-well plate were treated for 24 h
2016-03-22 | E-GEOD-79413 | biostudies-arrayexpress
Project description:The endogenous peptide Apelin is crucial for maintaining heart function in pressure overload and aging Experiment Overall Design: Heart samples from Apelin knockout mice with pressure overload and sham control together with the wild-type mice with pressure overload and sham were compared
2008-06-15 | E-GEOD-7781 | biostudies-arrayexpress
Project description:Microarray data on H9 hESC-derived cardiomyocytes (d30) treated with 0, 0.1, 1, or 10 uM of doxorubicin for 24 h Establish effects of increasing doses of doxorubicin on control H9 hESC-derived cardiomyocytes
2016-03-22 | GSE79413 | GEO
Project description:Evaluation of gene transcripts that are downstream of apelin/APJ and FoxO1 signaling in HUVECs
2017-10-02 | GSE67390 | GEO