Abstract
Abstract Angiogenesis, the process of forming new blood vessels from pre-existing ones, plays a pivotal role in various physiological and pathological conditions. CD160, a cell surface receptor known for its modulatory function in the immune response, has recently garnered attention as a surface marker for activated endothelial cells. In this study, we investigate the anti-angiogenic effects of a novel anti-CD160 antibody. Using the tube formation assay, we evaluated the novel anti-CD160 antibody's ability to inhibit neovascularization potential in activated Human umbilical vein endothelial cells (HUVEC) in vitro. Our results revealed a significant reduction in total tube length, the number of branches, and closed networks, indicating the antibody's efficacy in impeding neovascularization. In addition, we explored the molecular mechanisms underlying CD160's anti-angiogenic properties, showing its ability to selectively decrease fibroblast growth factor-2-induced angiogenesis. Furthermore, we assessed the safety profile of our new anti-CD160 antibody by examining its impact on endothelial cell apoptosis. Encouragingly, our findings demonstrated no induction of apoptosis, suggesting the antibody's selective targeting of angiogenic processes without compromising endothelial cell viability, thus supporting CD160's vascular normalization properties. In conclusion, our research provides compelling evidence for the anti-angiogenic effects of the CD160 antibody, as evidenced by its inhibition of tube formation without inducing apoptosis in activated endothelial cells. These findings hold promising therapeutic implications for targeting angiogenesis in various pathological conditions, warranting further exploration for potential clinical applications. Keywords: CD160, Angiogenesis, Endothelial cells. HUVECs. Citation Format: Abdel-ilah AZIZ. CD160 regulates angiogenesis in activated human endothelial cells [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 5400.
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