Epithelial regulation of ECM and leukocyte adhesion in viral-triggered asthma

项目摘要 众所周知，呼吸道病毒感染（例如，RSV或RV）可加重个体的反应 过敏性哮喘患者我们假设气道上皮细胞是呼吸系统的中枢协调者。 对呼吸道病毒感染以及过敏原的反应。气道上皮细胞的内在差异 (AEC)在健康和哮喘个体中，在这种加剧的反应中起重要作用。AECs来自 哮喘患者对感染的反应方式与健康受试者的AEC不同。这些差异是 在感染过程中表现在几个方面，包括表达和沉积的变化，额外的 细胞基质成分和细胞因子表达的定性和定量差异， 趋化因子哮喘AEC中这种改变的反应导致先天性和适应性反应的变化 在感染期间，随着白细胞对气道的浸润增加。该计划的主要目标是 识别和表征哮喘AEC中的这些变化，并确定它们对先天性和 适应性免疫反应考虑到这一目标，我们将（1）确定上皮细胞在 调节病毒触发哮喘中的ECM和白细胞粘附;（2）确定病毒触发哮喘中ECM和白细胞粘附的调节。 哮喘中上皮细胞的天然免疫反应;（3）确定上皮细胞在哮喘中的作用， 调节哮喘中的T细胞反应。

Project Summary It is well known that infection by respiratory viruses (e.g., RSV or RV) can exacerbate responses in individuals who are allergic asthmatics. It is our hypothesis that the airway epithelium is the central coordinator of responses to respiratory virus infection, as well as to allergens. Intrinsic differences in airway epithelial cells (AEC) in healthy and asthmatic individuals play an important role in this exacerbated response. AECs from asthmatics respond in a different manner to infection than AECs from healthy subjects. These differences are manifested during infection in several ways, including changes in the expression and deposition of extra cellular matrix components and qualitative and quantitative differences in the expression of cytokines and chemokines. This altered response in asthmatic AEC leads to changes in both innate and adaptive responses during infection, with increased infiltration of the airways with leukocytes. The primary goal of this Program is to identify and characterize these changes in asthmatic AECs, and determine their effects on the innate and adaptive immune response. With this goal in mind, we will (1) Determine the role of the epithelium in regulating ECM and leukocyte adhesion in viral-triggered asthma; (2) Determine the regulation of the Innate Immune response by the epithelium in asthma; (3) Determine the role of the epithelium in regulating T cell responses in asthma.