Ex vivo interrogation of the genetic and biochemical networks controlling influe

项目总结（见说明书）；这一应用的基本假设是宿主-病原体相互作用和反应的关键分子特征决定了病毒感染的致病结果。因此，全面了解病毒-宿主相互作用、对病毒感染的先天反应和病毒逃避策略对病毒发病机制的预测建模至关重要。在这里，我们将提供遗传，化学和生化网络的全面概述，在控制流感病毒感染中发挥作用，通过研究宿主-病毒相互作用在离体设置使用原代人细胞。流感病毒复制对宿主的影响将使用下一代测序技术来研究细胞RNA群体以确定转录组水平的变化（RNA-seq），对RNA聚合酶参与的启动子进行全基因组调查（GRO-seq），以及评估染色体景观中的表观遗传改变（CHiP-seq）。此外，将测量细胞内和细胞外代谢物水平、蛋白质丰度以及病毒感染诱导的翻译后修饰的全球变化。将这些方法与全基因组功能基因组筛选和高通量蛋白质相互作用组分析相结合，将能够生成高分辨率网络，准确描述流感病毒与宿主之间相互作用的层次。通过对驱动不同致病结果的三种病毒同时进行这些分析，这些数据的计算建模将使我们能够确定病毒-宿主网络的关键节点，这些节点可以预测病毒的发病机制。这些淋巴结的体内和临床影响将分别在项目2和项目3中进行评估。

PROJECT SUMMARY (See instructions); The underlying hypothesis of this application is that critical molecular features of host-pathogen interactions and responses dictate the pathogenic outcome of viral infection. Thus, a comprehensive understanding of viral-host interactions, innate responses to viral infection, and viral evasion strategies is pivotal for predictive modeling of viral pathogenesis. Here, we will provide a comprehensive overview ofthe genetic, chemical, and biochemical networks that play a role in controlling influenza virus infection by investigating host-virus interactions in an ex vivo setting using primary human cells. The impact of influenza virus replication on the host will be studied using next generation sequencing technologies to interrogate cellular RNA populations to define transcriptome-level changes (RNA-seq), conduct genome-wide survey of promoters engaged by RNA polymerase (GRO-seq), as well as evaluate epigenetic alterations in the chromosomal landscape (CHiP-seq). Furthermore, global alterations in intracellular and extracellular metabolite levels, protein abundance, as well as post-translational modifications induced upon viral infection will be measured. Combining these approaches with genome-wide functional genomic screening and high-throughput protein interactome analysis will enable the generation of high-resolution networks that accurately depict the hierarchies of interactions between influenza virus and the host. By conducting these analyses simultaneously with three viruses that drive varying pathogenic outcomes, computational modeling of these data will enable us to identify critical nodes ofthe viral-host network that are predictive of viral pathogenesis. The in vivo and clinical impact of these nodes will be evaluated in Projects 2 and 3, respectively.