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Impact of Signaling Pathways on Endothelial Cells: From Homeostasis to Disease

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Endocrinology and Metabolism".

Deadline for manuscript submissions: 20 April 2025 | Viewed by 1365

Special Issue Editor


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Guest Editor
Biosanté Unit U1292, Grenoble Alpes University, INSERM, CEA, F-38000 Grenoble, France
Interests: endothelial cells; signaling pathways; BMP signaling; hereditary hemorrhagic telangiectasia, angiogenesis; endothelial resilience; vascular malformations

Special Issue Information

Dear Colleagues,

Endothelial cells receive continuous molecular inputs from blood and surrounding tissues, and secrete, in turn, angiocrine factors that regulate tissue homeostasis and development. Dysregulation in the communication between endothelial cells and surrounding tissues is involved in numerous pathologies. Recent advances in vascular biology have revealed that unique combinations of signaling pathways and hemodynamics define the endothelial microenvironments motivating and supporting endothelial cell heterogeneity, not only between organs, but also within a given organ. This inherent endothelial heterogeneity is key for blood and lymphatic vessel development, function and regeneration. Thus, an enhanced understanding of how signaling pathways and hemodynamics affect the growth and maintenance of blood and lymphatic vessels of different organs, sizes and morphologies is required in order to engineer the vascularization of organoids or regenerating tissues, and to normalize vascular and lymphatic malformations. 

In this Special Issue of the International Journal of Molecular Sciences, we aim to publish original research works focusing on endothelial signaling pathways in health and diseases. Please note that the International Journal of Molecular Sciences is a journal of molecular science, and thus pure clinical or model studies will not be suitable. However, clinical or pure model submissions alongside biomolecular experiments are welcome.

Dr. Nicolas Ricard
Guest Editor

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Keywords

  • endothelial cells
  • signaling pathways
  • endothelial homeostasis
  • vascular diseases
  • vascular malformations
  • lymphatic malformations
  • endothelial heterogeneity
  • intercellular communication

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Published Papers (1 paper)

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Research

16 pages, 4428 KiB  
Article
Dengue Envelope Protein as a Cytotoxic Factor Inducing Hemorrhage and Endothelial Cell Death in Mice
by Te-Sheng Lien, Der-Shan Sun, Wen-Sheng Wu and Hsin-Hou Chang
Int. J. Mol. Sci. 2024, 25(19), 10858; https://doi.org/10.3390/ijms251910858 - 9 Oct 2024
Viewed by 943
Abstract
Dengue virus (DENV) infection, prevalent in tropical and subtropical regions, can progress to dengue hemorrhagic fever (DHF), which increases mortality during secondary infections. DHF is characterized by endothelial damage and vascular leakage. Despite its severity, no specific antiviral treatments exist, and the viral [...] Read more.
Dengue virus (DENV) infection, prevalent in tropical and subtropical regions, can progress to dengue hemorrhagic fever (DHF), which increases mortality during secondary infections. DHF is characterized by endothelial damage and vascular leakage. Despite its severity, no specific antiviral treatments exist, and the viral factors responsible for endothelial damage remain unclear. This study examines the role of the DENV envelope protein domain III (EIII) in inducing endothelial apoptosis using a mouse model. Additionally, we aim to explore whether cell death-inducing pathways could serve as drug targets to ameliorate EIII-induced endothelial injury and hemorrhage. In vitro experiments using human endothelial HMEC-1 cells demonstrated that both recombinant EIII (rEIII) and DENV markedly induced caspase-3-mediated endothelial cell death, an effect that was attenuated by co-treatment with chondroitin sulfate B (CSB), N-acetyl cysteine (NAC), and the caspase-3 inhibitor z-DEVD-FMK. In vivo, sequential injections of rEIII and anti-platelet immunoglobulin in mice, designed to mimic the clinical phase of DHF with peak viremia followed by an increase in DENV-induced Ig, including autoantibodies, revealed that these dual treatments markedly triggered caspase-3-dependent apoptosis in vascular endothelial cells at hemorrhage sites. Treatments with z-DEVD-FMK effectively reduced DHF-like symptoms such as thrombocytopenia, hemorrhage, inflammation, hypercoagulation, and endothelial damage. Additionally, CSB and NAC alleviated hemorrhagic symptoms in the mice. These results suggest that targeting EIII, reactive oxygen species, and caspase-3-mediated apoptosis could offer potential therapeutic strategies for addressing EIII-induced hemorrhagic pathogenesis. Full article
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