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CB-12181, a New Azasugar-Based Matrix Metalloproteinase/Tumor Necrosis Factor-α Converting Enzyme Inhibitor, Inhibits Vascular Endothelial Growth Factor-Induced Angiogenesis in Vitro and Retinal Neovascularization in Vivo

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To evaluate the anti-angiogenic efficacy of CB-12181 [an azasugar derivative that has inhibitory actions against matrix metalloproteinases (MMPs) and tumor necrosis factor-α (TNF-α) converting enzyme (TACE)], we investigated the suppressing ability on in vitro (tube formation by endothelial cells) and in vivo (retinal neovascularization on murine ischemia-induced proliferative retinopathy) models of angiogenesis. For in vitro analysis, a capillary-like tube formation model using human umbilical vein endothelial cells (HUVECs) and fibroblasts co-culture assay was employed. Tube formation of HUVECs was stimulated by vascular endothelial growth factor (VEGF) and incubated with different concentrations of CB-12181 (0.1-100 μM) for 11 days. For in vivo analysis, mice were exposed to 75% oxygen between postnatal days 7 and 12 (P7 to P12). Then, the mice were removed from the oxygen treatment and treated with CB-12181 (1, 15, or 50 mg/kg) by daily subcutaneous injection from the time of reintroduction to room air at P12 until P16. At P17, pathological and physiological angiogenesis was quantified using retinal flat-mounts visualized by fluorescent angiography. In the in vitro angiogenesis model, CB-12181 significantly suppressed VEGF-induced HUVEC tube formation. Furthermore, in the in vivo angiogenesis model, administration of CB-12181 significantly suppressed retinal neovascularization without any apparent side effects on physiological revascularization to the oxygen-induced obliteration area. These results suggest that CB-12181 might be useful in the treatment of various diseases that depend on pathologic angiogenesis, and especially valuable for the treatment of diabetic retinopathy and retinopathy of prematurity.

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Keywords: Human umbilical vein endothelial cells (HUVECs); TNF-α converting enzyme (TACE); matrix metalloproteinase (MMP); mice; neovascularization; oxygen-induced retinopathy; retina

Document Type: Research Article

Publication date: 2009-08-01

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  • Current Neurovascular Research (CNR) provides a cross platform for the publication of scientifically rigorous research that addresses disease mechanisms of both neuronal and vascular origins in neuroscience. The journal serves as an international forum for the publication of novel and pioneering original work as well as timely neuroscience research reviews in the disciplines of cell developmental disorders, plasticity, and degeneration that bridge the gap between basic science research and clinical discovery. CNR emphasizes the elucidation of disease mechanisms, both cellular and molecular, which can impact the development of unique therapeutic strategies for neuronal and vascular disorders.
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