Network Dissection of Host-Pathogen Interactions in Mycobacterium tuberculosis Infection

摘要 感染是宿主和病原体之间的动态相互作用，通过每个生物体的信号传导和 基因调控网络世界上最致命的病原体，结核分枝杆菌（Mtb），可以利用其 与宿主分子相互作用的网络，以引起使其持续的感染稳定状态 无症状地长达数十年。Mtb或主机网络活动中的扰动， 这种分子内稳态将改变感染结果：在病原学上， (TB)Mtb猖獗生长和病理性炎症的疾病，可能导致死亡，或保护性 以清除感染我将剖析宿主信号和结核分枝杆菌调控网络活动的感染命运- 决定在原代人类感染期间影响Mtb活力和宿主炎症的临界点基因 单核细胞衍生的巨噬细胞（MDM），体内主要的感染宿主细胞。我会分析出宿主和病原体 转录响应这些感染改变扰动，以确定分子机制， 宿主-病原体相互作用，我将利用这些信息来确定协同联合干预措施， 同时靶向宿主和病原体。在宿主-病原体界面识别这些临界点基因 应该告知新治疗干预策略，其联合靶向宿主和病原体以引起宿主保护， 同时也揭示了发病机制的基本见解。

ABSTRACT Infection is a dynamic interplay between host and pathogen, coordinated through each organism's signaling and gene regulatory networks. The world's deadliest pathogen, Mycobacterium tuberculosis (Mtb), can exploit its network of molecular interactions with the host to elicit an infection steady state that enables it to persist asymptomatically for up to decades. Perturbations in Mtb's or the host's network activities that tip the balance of this molecular homeostasis will alter infection outcomes: either pathogenically toward a symptomatic tuberculosis (TB) disease with rampant Mtb growth and pathological inflammation that could lead to death, or protectively toward infection clearance. I will dissect host signaling and Mtb regulatory network activities for infection fate- deciding tipping-point genes that impact Mtb viability and host inflammation during infection in primary human monocyte-derived macrophages (MDMs), a major infected host cell in vivo. I will profile the host and pathogen transcriptional responses to these infection-altering perturbations to define molecular mechanisms underlying the host-pathogen interplay, and I will use this information to identify synergistic joint interventions that concurrently target host and pathogen. Identifying these tipping-point genes at the host-pathogen interface should inform new therapeutic intervention strategies that jointly target host and pathogen to elicit host protection, while also revealing fundamental insights into pathogenesis.