Pathway maps of platelet phenotype and function

血小板表型和功能的通路图

• 批准号: 9895857
• 负责人: JOSEPH E ASLAN
• 金额: $ 38.5万
• 依托单位: OREGON HEALTH & SCIENCE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-04-01 至 2024-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/9895857
• 关键词: Address; Adhesions; Adhesives; Affect; Agonist; Alpha Granule; Atherosclerosis; Biochemical; Biological; Blood Cells; Blood Platelets; Cardiovascular Diseases; Cause of Death; Cell model; Cell-Cell Adhesion; Cells; Chronic Disease; Coagulation Process; Complement; Complex; Cues; Cytokine Receptors; Cytoplasmic Granules; Data Analyses; Disease; Endothelium; Event; Filopodia; Glycoproteins; Goals; Hemorrhage; Hemostatic Agents; Hemostatic function; Image; Inflammation; Inflammatory; Inflammatory Response; Injury; Integrins; Knowledge; Leukocytes; Maps; Measurement; Measures; Mediating; Mediator of activation protein; Methodology; Methods; Modeling; Molecular; Morbidity - disease rate; Output; P-Selectin; Pathogenesis; Pathway interactions; Phenotype; Phospholipase; Phosphorylation; Physiological; Platelet Activation; Process; Proteins; Proteomics; Public Health; Purinoceptor; Receptor Signaling; Regulation; Role; Signal Pathway; Signal Transduction; Site; Specific qualifier value; System; Systems Biology; Testing; Thrombosis; Work; adhesion receptor; base; disability; extracellular; improved; in vivo; mortality; novel; platelet function; platelet phenotype; prevent; programs; receptor; release factor; response; tool; trafficking; vascular inflammation

PROJECT SUMMARY As the primary cellular mediators of hemostasis, platelets are optimized to limit bleeding through rapid adhesion, secretion and aggregation responses at sites of endothelial injury. Platelets also adhere to dysfunctional endothelium, where they secrete proinflammatory molecules and form aggregates with leukocytes to progress vascular inflammation in a manner relevant to the pathogenesis of chronic diseases, including atherosclerosis. Ongoing efforts aiming to understand and target platelet activities specific to disease have characterized a spectrum of platelet functional phenotypes associated with inflammatory, thrombotic and other conditions. Despite the identification of key molecular alterations that highlight differences between these phenotypes, it remains unclear how different platelet phenotypes develop, how they should be defined, and, ultimately, how they should be targeted. We hypothesize that platelet hemostatic, inflammatory and other phenotypes are determined by the systematic activation of intracellular signaling pathways and effectors that result in specific platelet functional outputs in response to physiological context. We aim to systematically define intracellular signaling events that progress platelet adhesion (Aim 1), secretion (Aim 2) and aggregation (Aim 3) in hemostatic programs and to determine how these responses mechanistically differ in the context of vascular inflammation. We will engage these studies through the use of a high-throughput, proteomics-based workflow that measures and maps intracellular signaling events and pathways underlying platelet function in specific experimental and physiological contexts. We now use this set of proteomics, computational and cell biological tools to build pathway maps intracellular signaling relations in platelet activation programs. In this proposal, we use this first-in-class pathway mapping methodology together with other physiological and systems biology tools to address how platelet signaling programs specify platelet phenotypes favoring hemostatic and inflammatory responses. Ultimately, this work will generate knowledge as well as a conceptual means to define and understand systems level mechanisms of platelet regulation in hemostasis as well as in inflammation and the manifestation of disease.

项目摘要 作为止血的主要细胞介质，血小板被优化以限制通过快速出血 内皮损伤部位的粘附，分泌和聚集反应。血小板也遵守 功能失调的内皮，它们分泌促炎分子并与 白细胞以与慢性疾病的发病机理相关的方式进行血管炎症， 包括动脉粥样硬化。旨在理解和针对特定于疾病的血小板活动的持续努力 已经表征了与炎症，血栓形成和 其他条件。尽管鉴定了关键分子改变，这些变化突出了这些之间的差异 表型，尚不清楚如何形成不同的血小板表型，应如何定义它们以及，以及 最终，应如何将它们作为目标。我们假设血小板止血，炎症和其他 表型是由细胞内信号通路和效应子的系统激活确定的 响应生理环境，导致特定的血小板功能输出。我们的目标是系统地 定义会进展血小板粘附的细胞内信号传导事件（AIM 1），分泌（AIM 2）和聚集 （目标3）在止血程序中，并确定这些反应在机械上如何在机械上差异 血管炎症。我们将通过使用高通量，基于蛋白质组学的研究来参与这些研究 测量和绘制细胞内信号传导事件和途径血小板功能的工作流程 特定的实验和生理环境。现在，我们使用这组蛋白质组学，计算和细胞 构建途径的生物工具映射血小板激活程序中的细胞内信号传导关系。在这个 提案，我们将此一流的途径映射方法以及其他生理和 系统生物学工具以解决血小板信号程序如何指定血小板表型有利的 止血和炎症反应。最终，这项工作将产生知识和概念 定义和理解止血和血小板调节的系统水平机制以及 炎症和疾病的表现。