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Endothelial TGFb signaling drives vascular inflammation and atherosclerosis [ChIP-Seq]

ABSTRACT: Endothelial TGFβ signaling is one of the primary drivers of atherosclerosis-associated vascular inflammation. Inhibition of endothelial TGFβ signaling in hyperlipidemic mice reduces vessel wall inflammation and vascular permeability and leads to arrest of disease progression and regression of established lesions. We performed scRNAseq method to examine endothelial cell gene expression profile using Apoe and EC specific TGFbR1/2 KO in Apoe background mice.

ORGANISM(S): Homo sapiens

PROVIDER: GSE134556 | GEO | 2019/08/26

REPOSITORIES: GEO

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Endothelial TGFb signaling drives vascular inflammation and atherosclerosis [bulk RNA-Seq]

Project description:Endothelial TGFβ signaling is one of the primary drivers of atherosclerosis-associated vascular inflammation. Inhibition of endothelial TGFβ signaling in hyperlipidemic mice reduces vessel wall inflammation and vascular permeability and leads to arrest of disease progression and regression of established lesions. We performed scRNAseq method to examine endothelial cell gene expression profile using Apoe and EC specific TGFbR1/2 KO in Apoe background mice.

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Project description:Smooth muscle cell TGFβ signaling is one of the primary drivers of smooth muscle cell maturation. Inhibition of smooth muscle cell TGFβ signaling in hyperlipidemic mice induces vessel wall inflammation and vessel wall dilation/dissection and leads aortic aneurysm. We performed scRNAseq method to examine smooth muscle cell gene expression profile using Apoe and SMC specific TGFbR2 KO in Apoe background mice.

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Endothelial TGFb signaling drives vascular inflammation and atherosclerosis

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Cellular and molecular mechanisms underlying granulosa cell tumor induced by constitutively activated TGFB signaling

Project description:Mice harboring constitutively activated TGFβ signaling (TGFBR1-CA) develop ovarian GCTs that phenocopy the hormonal and several molecular characteristics of human GCTs. The goal of this study is to determine molecular alterations in the ovary upon TGFβ signaling activation. We performed Next-generation sequencing (NGS) analysis of ovaries from TGFBR1-CA mice and age-matched controls during tumor formation

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Endothelial Jag1-RBPJK signaling promotes inflammatory leukocyte recruitment and atherosclerosis

Project description:Aim: To determine the role of NOTCH during the response-to-injury and subsequent chronic inflammatory process of the arterial wall underlying atherosclerosis. Methods and results: We have generated an endothelial-specific RBPJK depleted mice using the Cdh5 cadherin promoter (ApoE-/-;RBPJflox/flox;Cdh5- CreERT). Endothelial-specific deletion of the Notch effector RBPJK or systemic deletion of the Notch1 receptor in athero-susceptible ApoE-/- mice fed a HC diet for 6 weeks resulted in reduced atherosclerosis in the aortic arch and sinus. Intravital microscopy revealed decreased leukocyte rolling on the endothelium of ApoE-/-;RBPJflox/flox;Cdh5- CreERT, that correlated with the lesser presence of leukocyts and macrophages in the vascular wall. Consistent with this, transcriptome analysis revealed that proinflammatory and endothelial activation pathways were downregulated in atherosclerotic tissue of RBPJk-mutant mice.. Jagged1 signaling upregulation in endothelial cells promotes the physical interaction and nuclear translocation of the intracellular domain of the Notch1 receptor (N1ICD) with NF-kB,. This N1ICD and NF-kB interaction is required for reciprocal transactivation of target genes including vascular cell adhesion molecule-1 (Vcam1). Conclusions: Notch signaling pathway inactivation decreases leukocyte rolling, thereby preventing endothelial dysfunction and vascular inflammation. Thus attenuating Notch signaling may constitute a useful therapeutic strategy for atherosclerosis. Key words: atherosclerosis, endothelium, signaling pathways, Notch, NF-kB, transcriptional regulation

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Endothelial TGFb signaling drives vascular inflammation and atherosclerosis [bulk RNA-Seq]

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Physiological Vascular Permeability Requires Induction of Endothelial NR4A1 by Progesterone Receptor [RNA-Seq]

Project description:Vascular permeability is frequently associated with inflammation and it is triggered by chemokines and by a cohort of secreted permeability factors, such as VEGF. In contrast, here we showed that the physiological vascular permeability that precedes implantation is directly controlled by progesterone receptor (PR) and it is independent of VEGF. Both global and endothelial-specific deletion of PR block physiological vascular permeability in the uterus while misexpression of PR in the endothelium of other organs results in ectopic vascular leakage. Integration of genome-wide transcriptional profile of endothelium and ChIP-sequencing revealed that PR induces a NR4A1 (Nur77/TR3) specific transcriptional program that broadly regulates vascular permeability in response to progesterone. This program triggers concurrent suppression of several junctional proteins and leads to an effective, timely and venule-specific regulation of vascular barrier function. Silencing NR4A1 blocks PR-mediated permeability responses indicating a direct link between PR and NR4A1. These results reveal a previously unknown function for progesterone receptor on endothelial cell biology with consequences to physiological vascular permeability and implications to the clinical use of progestins and anti-progestins on blood vessel integrity. Examination of PR target genes in human umbilical vein endothelial cells (HUVECs) using RNA-seq (PR infected only -PR only and PR infected followed by ligand treatment-PR+P)

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