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CAMP/EPAC signaling enables ETV2 to induce endothelial cells with high angiogenesis potential [ChIP-seq]

ABSTRACT: Although the generation of ETV2-induced endothelial cells (iECs) from human fibroblasts serves as a novel therapeutic strategy in regenerative medicine, the process is inefficient, resulting in incomplete iEC angiogenesis. Therefore, we employed ChIP-sequencing and identified molecular mechanisms underlying ETV2-mediated endothelial transdifferentiation to efficiently produce iECs retaining appropriate functionality in long-term culture. We revealed that the majority of ETV2 targets in human fibroblasts are related to vasculature development and signaling transduction pathways including Rap1 signaling. From a screening of signaling pathway modulators, we confirmed that forskolin facilitated efficient and rapid iEC reprogramming via activation of cAMP/EPAC/RAP1 axis. The iECs obtained via cAMP signaling activation showed superior angiogenesis in vivo as well as in vitro. Moreover, these cells could form aligned endothelium along the vascular lumen ex vivo when seeded into decellularized liver scaffold. Overall, our study provided evidence that cAMP/EPAC/RAP1 axis is required for the efficient generation of iECs with angiogenesis potential.

ORGANISM(S): Homo sapiens

PROVIDER: GSE123906 | GEO | 2019/11/09

REPOSITORIES: GEO

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cAMP/EPAC signaling enables ETV2 to induce endothelial cells with high angiogenesis potential [RNA-seq]

Project description:Although the generation of ETV2-induced endothelial cells (iECs) from human fibroblasts serves as a novel therapeutic strategy in regenerative medicine, the process is inefficient, resulting in incomplete iEC angiogenesis. Therefore, we employed ChIP-sequencing and identified molecular mechanisms underlying ETV2-mediated endothelial transdifferentiation to efficiently produce iECs retaining appropriate functionality in long-term culture. We revealed that the majority of ETV2 targets in human fibroblasts are related to vasculature development and signaling transduction pathways including Rap1 signaling. From a screening of signaling pathway modulators, we confirmed that forskolin facilitated efficient and rapid iEC reprogramming via activation of cAMP/EPAC/RAP1 axis. The iECs obtained via cAMP signaling activation showed superior angiogenesis in vivo as well as in vitro. Moreover, these cells could form aligned endothelium along the vascular lumen ex vivo when seeded into decellularized liver scaffold. Overall, our study provided evidence that cAMP/EPAC/RAP1 axis is required for the efficient generation of iECs with angiogenesis potential.

2019-11-09 | GSE123907 | GEO

cAMP/EPAC signaling enables ETV2 to induce endothelial cells with high angiogenesis potential

Project description:cAMP/EPAC signaling enables ETV2 to induce endothelial cells with high angiogenesis potential

| PRJNA510253 | ENA

HMVEC cells treated with vascular endothelial growth factor, anthrax edema toxin, and an Epac activator

Project description:Human microvascular endothelial cells (HMVEC) treated with vascular endothelial growth factor (VEGF), Antrhax Edema Toxin (ET), or the Epac activator, 8-pCPT-2'-O-Me-cAMP (8CPT) Human microvascular endothelial cells (HMVEC) were treated with VEGF alone or VEGF in combination with either the the Epac-specific cAMP-mimetic, 8-pCPT-2'-O-Me-cAMP (8CPT), or anthrax edema toxin (ET), an adenylyl cyclase. ET or 8CPT can inhibit VEGF-mediated chemotaxis and angiogenesis. The goal of the study was to identify genes regulated by cAMP production (ET) or by activation of Epac/Rap (8CPT) that may mitigate the effects of VEGF treatment.

2009-08-25 | GSE17777 | GEO

cAMP/EPAC signaling enables ETV2 to induce endothelial cells with high angiogenesis potential [RNA-seq]

Project description:cAMP/EPAC signaling enables ETV2 to induce endothelial cells with high angiogenesis potential [RNA-seq]

| PRJNA510255 | ENA

cAMP/EPAC signaling enables ETV2 to induce endothelial cells with high angiogenesis potential [ChIP-seq]

Project description:cAMP/EPAC signaling enables ETV2 to induce endothelial cells with high angiogenesis potential [ChIP-seq]

| PRJNA510256 | ENA

Transcription profiling of human HMVEC cells treated with vascular endothelial growth factor, anthrax edema toxin, and an Epac activator

Project description:Human microvascular endothelial cells (HMVEC) treated with vascular endothelial growth factor (VEGF), Antrhax Edema Toxin (ET), or the Epac activator, 8-pCPT-2'-O-Me-cAMP (8CPT); Human microvascular endothelial cells (HMVEC) were treated with VEGF alone or VEGF in combination with either the the Epac-specific cAMP-mimetic, 8-pCPT-2'-O-Me-cAMP (8CPT), or anthrax edema toxin (ET), an adenylyl cyclase. ET or 8CPT can inhibit VEGF-mediated chemotaxis and angiogenesis. The goal of the study was to identify genes regulated by cAMP production (ET) or by activation of Epac/Rap (8CPT) that may mitigate the effects of VEGF treatment. Experiment Overall Design: Gene expression was measured 4 hours after treatment with VEGF, VEGF + 8CPT, VEGF + ET or mock treatment. Each sample contained one replicate.

2009-09-13 | E-GEOD-17777 | biostudies-arrayexpress

Expression data from BeWo cells treated without or with PKA- or EPAC-selected cAMP analogs

Project description:Cyclic AMP activates two downstream factors, protein kinase A (PKA) and exchange protein directly activated by cAMP (EPAC) and both downstream signalings induce syncytialization, cell fusion and the production of hCG and progesterone. We used microarray to identify novel transcription factors related to syncytialization in two cAMP signaling-stimulated BeWo cells.

2017-09-30 | GSE100095 | GEO

Proteomic analysis of cAMP-mediated signaling during differentiation of 3T3-L1 preadipocytes

Project description:Initiation of adipocyte differentiation is promoted by the synergistic action of insulin/insulin-like growth factor, glucocorticoids, and agents activating cAMP-dependent signaling. The action of cAMP is mediated via PKA and Epac, where at least part of the PKA function relates to strong repression of Rho kinase activity, whereas Epac counteracts the reduction in insulin/insulin-like growth factor signaling associated with complete repression of Rho kinase activity. However, detailed knowledge of the Epac-dependent branch and the interplay with PKA is still limited. In the present study, we present a comprehensive evaluation of Epac-mediated processes and their interplay with PKA during the initiation of 3T3-L1 preadipocyte differentiation using a combination of proteomics, molecular approaches and bioinformatics. Proteomic analyses revealed 7 proteins specifically regulated in response to Epac activation, 4 in response to PKA activation, and 11 in response to the combined activation by Epac and PKA during the initial phase of differentiation. Network analyses indicated that the identified proteins are involved in pathways of importance for glucose metabolism, inositol metabolism and calcium-dependent signaling thereby adding a novel facet to our understanding of cAMP-mediated potentiation of adipocyte differentiation.

2014-09-22 | PXD001063 | Pride

Regulation of gene expression in IECs by HDAC3

Project description:The development and severity of inflammatory bowel diseases (IBD) and other chronic inflammatory conditions can be influenced by host genetic and environmental factors, including signals derived from commensal bacteria. However, the mechanisms that integrate these diverse cues remain undefined. Here we demonstrate that intestinal epithelial cells (IECs) isolated from IBD patients exhibit decreased expression of the epigenome-modifying enzyme histone deacetylase 3 (HDAC3). Further, genome-wide analyses of murine IECs that lack HDAC3 (HDAC3?IEC) revealed that HDAC3 deficiency resulted in dysregulated gene expression coupled with alterations in histone acetylation. Critically, conventionally-housed HDAC3?IEC mice demonstrated loss of Paneth cells, impaired IEC function and alterations in the composition of intestinal commensal bacteria. In addition, HDAC3?IEC mice exhibited significantly increased susceptibility to intestinal damage and inflammation, indicating that epithelial expression of HDAC3 plays a central role in maintaining intestinal homeostasis. Strikingly, rederivation of HDAC3?IEC mice into germ-free conditions revealed that dysregulated IEC gene expression, Paneth cell homeostasis, and intestinal barrier function were largely restored in the absence of commensal bacteria. Collectively, these data indicate that the HDAC3 is a critical factor that integrates commensal bacteria-derived signals to calibrate epithelial cell responses required to establish normal host-commensal relationships and maintain intestinal homeostasis. In this study, we performed gene expression profiling to examine how the transcriptional profiles in primary live, EpCAM+ IECs from the large intestine differed between control HDAC3FF mice (3 biological replicates) and IEC-intrinsic knockout HDAC3?IEC mice (3 biological replicates).

2013-11-12 | E-GEOD-50188 | biostudies-arrayexpress

Mice liver tissue LC-MSMS EPAC

Project description:We employed mouse models with targeted deletion of the genes encoding Epac1 (Rapgef3) and Epac2 (Rapgef4) in combination with 2/3 partial hepatectomy to investigate the functional roles of Epac1 and Epac2 in liver. Proteomic analysis of liver tissue before and 36h after hepatectomy revealed changes in the proteome in Epac depleted mice, most significantly of proteins involved in lipid metabolism. The current study is the first to identify functional roles for Epac1 and Epac2 in livers of an animal model. The results support the notion that Epac proteins are not required for normal liver development and function, but that these factors become important in the regulation of cellular responses in stressful situations.

2019-09-12 | PXD006165 | Pride

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