Regulation of retinopathies

视网膜病变的调节

基本信息

批准号：
8248326
负责人：
CARLOS S SUBAUSTE
金额：
$ 33.91万
依托单位：
CASE WESTERN RESERVE UNIVERSITY
依托单位国家：
美国
项目类别：
财政年份：
2010
资助国家：
美国
起止时间：
2010-04-01 至 2015-03-31
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/8248326
关键词：
Animal Model Automobile Driving Biological Assay Blindness Blood Platelets Blood Vessels Blood capillaries Bone Marrow Transplantation Brain CCL2 gene CD40 Ligand Cause of Death Cell Adhesion Molecules Cell Death Cells Cessation of life Collaborations Degenerative Disorder Development Diabetes Mellitus Diabetic Retinopathy Diabetic mouse Disease Endothelial Cells Event Exhibits Gene Transfer Inflammation Inflammatory Inflammatory Response Injury Intercellular adhesion molecule 1 Ischemia Knock-in Mouse Knockout Mice Laboratories Lead Leukostasis Link Mediating Methodology Microglia Modeling Muller&apos s cell Mus NOS2A gene Neuroglia Neuronal Injury Neurons Nitric Oxide Synthase PTGS2 gene Pathogenesis Pathway interactions Patients Peptides Pericytes Plasma Prostaglandin-Endoperoxide Synthase Regimen Regulation Reperfusion Therapy Research Research Personnel Resistance Retina Retinal Retinal Diseases Retinal Ganglion Cells Role Signal Transduction Signaling Protein T-Lymphocyte TNF Receptor-Associated Factors TNF gene TNFRSF5 gene TNFSF5 gene Testing Therapeutic Tissues Transgenic Mice Treatment Protocols Tumor Necrosis Factor Receptor United States Up-Regulation Vascular Endothelial Growth Factors Wild Type Mouse Work capillary chemokine cytokine diabetic ganglion cell in vivo macroglia member neuron loss novel strategies prevent public health relevance receptor relating to nervous system response retinal neuron single molecule ward

项目摘要

DESCRIPTION (provided by applicant): Diabetic retinopathy is a major cause of blindness in the United States. Upregulation of adhesion molecules, chemokines, nitric oxide synthase (NOS2), inducible cyclooxygenase (COX-2) and vascular endothelial growth factor (VEGF) are pro- inflammatory responses believed to be important in this disease. It is increasingly recognized that these responses contribute to retinal injury and neuro-vascular degeneration. Understanding the regulation of these responses is important because neuronal death largely contributes to visual loss in diabetic retinopathy and currently available treatment regimens have not been able to prevent neuronal loss. The objective of this application is to further our understanding of the regulation of pro-inflammatory responses and neuro-vascular degeneration in diabetic retinopathy. The central hypothesis for the proposed research is that there is a previously unrecognized upstream molecule that triggers the pro-inflammatory responses mentioned above and mediates neuro-vascular degeneration in diabetic retinopathy. Finding that a single molecule controls various cellular responses involved in the pathogenesis of this disease would be significant because it would suggest that targeting a single molecule would impair multiple pro-retinopathy factors. In the first specific aim we will characterize the regulation of pro-inflammatory responses in retinal microglia, Muller cells and endothelial cells. This will be accomplished using immunological assays and gene transfer approaches that block specific signaling proteins. In addition, we will test whether a novel approach to deliver molecules intra-cellularly can be used to block signaling that controls pro-inflammatory responses in retinal cells. Using similar methodologies, in the second specific aim we will characterize the regulation of neuronal and endothelial cell death caused by these pro-retinopathy responses. Using an animal model of diabetic retinopathy in wild-type and knock-out mice we will evaluate the in vivo effects of regulation of inflammation on the development of diabetic retinopathy. The proposed work may lead to new strategies to treat diabetic retinopathy. PUBLIC HEALTH RELEVANCE: Diabetic retinopathy is a major cause of visual loss. Current therapeutic regimens do not prevent tissue injury and neuronal damage in this disease. We plan studies that will hopefully identify molecules that can be manipulated to achieve neuro-protection in patients with this retinopathy.

描述（由申请人提供）：糖尿病视网膜病变是美国失明的主要原因。粘附分子、趋化因子、一氧化氮合酶(NOS2)、诱导型环氧合酶(COX-2)和血管内皮生长因子(VEGF)的上调是被认为在该疾病中重要的促炎反应。人们越来越认识到这些反应会导致视网膜损伤和神经血管变性。了解这些反应的调节非常重要，因为神经元死亡在很大程度上导致糖尿病视网膜病变的视力丧失，而目前可用的治疗方案无法防止神经元丧失。该应用的目的是进一步了解糖尿病视网膜病变中促炎症反应和神经血管变性的调节。这项研究的中心假设是，存在一种以前未被识别的上游分子，可以触发上述促炎反应并介导糖尿病视网膜病变的神经血管变性。发现单个分子控制参与这种疾病发病机制的各种细胞反应将具有重要意义，因为这表明针对单个分子将损害多种促视网膜病因子。在第一个具体目标中，我们将描述视网膜小胶质细胞、米勒细胞和内皮细胞中促炎症反应的调节。这将通过免疫学测定和阻断特定信号蛋白的基因转移方法来实现。此外，我们将测试一种在细胞内传递分子的新方法是否可用于阻断控制视网膜细胞促炎症反应的信号传导。使用类似的方法，在第二个具体目标中，我们将描述这些促视网膜病变反应引起的神经元和内皮细胞死亡的调节。使用野生型和基因敲除小鼠的糖尿病视网膜病变动物模型，我们将评估炎症调节对糖尿病视网膜病变发展的体内影响。拟议的工作可能会带来治疗糖尿病视网膜病变的新策略。公众健康相关性：糖尿病视网膜病变是视力丧失的主要原因。目前的治疗方案不能预防这种疾病的组织损伤和神经元损伤。我们计划进行研究，希望能够识别出可操纵的分子，以实现对这种视网膜病患者的神经保护。