Molecular Studies of the Choriocapillaris in AMD

AMD 脉络膜毛细血管的分子研究

基本信息

批准号：
10338267
负责人：
Robert Foster Mullins
金额：
$ 38.63万
依托单位：
UNIVERSITY OF IOWA
依托单位国家：
美国
项目类别：
财政年份：
2022
资助国家：
美国
起止时间：
2022-01-01 至 2026-11-30
项目状态：
未结题

来源：
https://reporter.nih.gov/project-details/10338267
关键词：
Address Affect Age related macular degeneration Atrophic Behavior Biochemical Blindness Blood Vessels Blood capillaries Categories Cells Cessation of life Choroid Choroidal Neovascularization Communities Complement Complement Membrane Attack Complex Complex Cytolysis Data Disease Drusen Endothelial Cells Extracellular Matrix Degradation Exudative age-related macular degeneration Eye Functional disorder Genes Health Histologic Human ICAM1 gene Imaging Techniques Immunofluorescence Immunologic In Situ Hybridization In Vitro Individual Inflammatory Injury Knowledge Label Lentivirus Mediating Molecular Molecular Profiling Mus Nonexudative age-related macular degeneration PECAM1 gene Phenotype Photoreceptors Population Preparation Process Public Health Research Resolution Retina Small Interfering RNA Structure of retinal pigment epithelium Thick complement system geographic atrophy induced pluripotent stem cell insight macula migration new technology normal aging preservation programs retinal damage single-cell RNA sequencing transcriptome transcriptomics

项目摘要

ABSTRACT Age-related macular degeneration (AMD) is a common cause of severe vision loss. Recent studies have shown that a layer of capillaries called the choriocapillaris is affected in AMD, both in “dry” AMD in which the blood vessels degenerate, depriving the retina of nourishment, and in “wet” AMD in which the cells become activated to grow abnormally, damaging the retina. To a large extent the biochemical changes in the choriocapillaris that accompany AMD are poorly understood. In this proposal we will study how a gene that is affected by the complement system and is enriched in AMD cells contributes to the processes associated with the choriocapillaris in AMD. We will also utilize a new technology (single cell RNA-sequencing) to discover the molecular signatures of endothelial cells from the choroid at the single cell level of resolution in health and different forms of AMD. A better understanding of how these cells are altered in disease will provide insight into how to protect them from damage and death.

抽象的最近的研究表明，年龄相关性黄斑变性（AMD）是严重视力丧失的常见原因。研究表明，一层称为脉络膜毛细血管的毛细血管在 AMD 中受到影响，无论是在“干性”AMD 中还是在血管退化，剥夺视网膜的营养，而在“湿性”AMD 中，细胞被激活异常生长，在很大程度上损害了视网膜的生化。伴随 AMD 发生的脉络膜毛细血管的变化我们知之甚少。研究受补体系统影响并在 AMD 细胞中富集的基因如何促进 AMD 中与脉络膜毛细血管相关的过程我们还将利用一项新技术（单一技术）。细胞 RNA 测序）发现脉络膜内皮细胞的分子特征单细胞水平的健康和不同形式的AMD如何更好地理解这些。细胞处于疾病状态将提供有关如何保护它们免受损伤和死亡的见解。