Previously, we identified DPTH, an analogue of antiepileptic drug phenytoin (5,5-diphenylhydantoin, DPT), capable of retarding the cell cycle in the human vascular endothelial cells. Our data suggest that DPTH inhibits human umbilical venous endothelial cells (HUVEC) proliferation by increasing the level of p21 protein, which in turn inhibits the activities of cyclin-dependent kinase (CDK)2 and...

Vascular endothelial hyperproliferation is involved in the pathophysiological process of angiogenesis, which is indispensable for tumor growth and spread in hypoxic adaptation. There is increasing evidence indicating that statins have potential anti-angiogenesis benefits. However, the intracellular signaling mechanism underlying the effect of statins in vascular endothelial cells is undefined. ...

PURPOSE The perivascular localization of stem cell (SC) niches suggests the presence of a vascular niche. We aimed to determine the angiogenesis potential of limbal niche cells (NCs). METHODS Human limbal NCs were isolated and serially passaged on plastic or coated Matrigel in embryonic SC medium containing BFGF and leukemia inhibitory factor before being reseeded in 3D Matrigel. Expression o...

Extracellular vesicles (EVs) released by endothelial cells support vascular homeostasis. To better understand cell EV biogenesis, we examined cultured human umbilical vein (HUVECs) prepared rapid freezing, freeze-substitution, and serial thin section electron microscopy (EM). Thin sections of HUVECs revealed clusters membrane protrusions on the otherwise smooth surface. The contained membrane-b...

Abstract Here we report application of human umbilical cord mesenchymal stem cell (HUCMSC)-derived therapy for pulmonary arterial hypertension (PAH). A 3-year-old female presented with heritable PAH associated hereditary hemorrhagic telangiectasia and was treated 6 months serial intravascular infusions conditioned media (CM) from allogenic HUCMSCs. The treatment markedly improved clinical hemod...

PURPOSE Similar to osteoclastogenesis, angiogenesis is enhanced in the bone marrow in myeloma in parallel with tumor progression. We showed previously that myeloma cells and osteoclasts are mutually stimulated to form a vicious cycle to lead to enhance both osteoclastogenesis and tumor growth. The present study was undertaken to clarify whether myeloma cell-osteoclast interaction enhances angio...

Rheumatoid arthritis (RA) is a progressive autoimmune disease affecting the joints. In this study, we investigated the role of the pro-angiogenic factor leptin in regulating reactive oxygen species (ROS) to promote cell migration and angiogenesis in RA. We showed that leptin triggered RA fibroblast-like synoviocyte (FLS) migration by increased ROS expression. Additionally, leptin enhanced human...

IL-4 is emerging as a candidate cytokine for the treatment of inflammatory and autoimmune diseases. We have reported that IL-4 has anti-angiogenic activity and inhibits the growth of human umbilical vein endothelial cells (HUVEC) in response to vascular endothelial growth factor (VEGF) or fibroblast growth factor-2 (FGF-2). Cell cycle analysis of this effect revealed that IL-4 arrests the growt...

Platelet adhesion to vascular endothelial cells is a pathophysiologically relevant cell-to-cell interaction. However, the mechanisms underlying this cellular interaction are incompletely understood. In search of the ligand for CD226 adhesion molecule expressed on platelets, we found that human umbilical vein endothelial cells (HUVEC) express significant amount of putative CD226 ligand. We demon...

Proinflammatory stimuli lead to endothelial injury, which results in pathologies such as cardiovascular diseases, autoimmune and contributes alloimmune responses after organ transplantation. Both mesenchymal stromal cells (MSC) the extracellular vesicles (EV) released by them are widely studied regenerative therapy for endothelium. However, therapeutic application, manipulation of living MSC la...