Regulation of oxidative stress and vascular remodeling by EBP50

慢性炎症和氧化应激是许多与年龄有关的疾病的标志，包括 心血管疾病目前迫切需要为增加的免疫原性建立分子和细胞基础。 以及导致血管疾病的持续炎症和氧化状态。我们最近的研究表明 支架蛋白Ezrin结合蛋白50（EBP 50，也称为NHERF 1）是一种关键的调节因子， 全身和血管炎症。对小鼠和细胞系统的研究表明，炎症刺激 促进巨噬细胞和血管平滑肌细胞（VSMC）中的EBP 50表达，反之， EBP 50增加这些细胞中的炎症反应。初步研究还表明，EBP50 增加活性氧物质的产生并增强血管中的氧化应激。这些发现 提示EBP 50在控制炎症和氧化应激中的一种新的和病理相关的作用。 应力我们假设EBP 50促进慢性炎症和氧化状态， 动脉粥样硬化和血管疾病。三个具体的目标是为了测试这一假设，并阐明 EBP 50的这些新作用的分子机制。在目标1中， 将阐明EBP 50调节氧化应激的机制。目标2将决定EBP 50的行动， 调节线粒体功能以及对炎症和氧化刺激的反应。在Aim 3中，鼠 模型将用于确定EBP 50对新生内膜形成的影响。该研究计划采用 补充的方法来定义EBP 50调节炎症和氧化的新机制， 应力长期目标是确定和开发新的药物干预途径， 限制慢性炎症和氧化应激。

Chronic inflammation and oxidative stress are hallmarks of many age-related diseases, including cardiovascular disease. There is a critical need to establish the molecular and cellular basis for the increased and sustained inflammatory and oxidative status that leads to vascular disease. We have recently shown that the scaffolding protein Ezrin Binding Protein 50 (EBP50, also known as NHERF1) is a key regulator of systemic and vascular inflammation. Studies in mice and in cell systems show that inflammatory stimuli promote EBP50 expression in macrophages and vascular smooth muscle cells (VSMC) and, conversely, EBP50 increases inflammatory responses in these cells. Preliminary studies also indicate that EBP50 increases the generation of reactive oxygen species and potentiates oxidative stress in vessels. These findings suggest a novel and pathologically relevant role for EBP50 in the control of both inflammation and oxidative stress. We hypothesize that EBP50 promotes a chronic inflammatory and oxidative status that contributes to atherosclerosis and vascular disease. Three specific aims are designed to test this hypothesis and elucidate the molecular mechanisms underlying these novel actions of EBP50. In Aim 1 that molecular mechanisms by which EBP50 regulates oxidative stress will be elucidated. Aim 2 will determine the actions of EBP50 that regulate mitochondrial function and the responses to inflammatory and oxidative stimuli. In Aim 3, murine models will be used to determine the effect of EBP50 on neointima formation. This research plan employs complementary methods to define a novel mechanism by which EBP50 regulates inflammation and oxidative stress. The long-term goal is to identify and exploit novel avenues for pharmacological intervention aimed at limiting chronic inflammation and oxidative stress.