Immune Mediators of IL-22 Signaling Alter Allergic Airway Disease

IL-22 信号的免疫介质改变过敏性气道疾病

• 批准号: 10853347
• 负责人: Michelle Lynn Manni
• 金额: $ 7.28万
• 依托单位: UNIVERSITY OF PITTSBURGH AT PITTSBURGH
• 依托单位国家: 美国
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-15 至 2024-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10853347
• 关键词: Affect; Allergens; Allergic Disease; Animal Model; Asthma; Binding Proteins; Biological Availability; Biological Response Modifiers; Development; Disease; Disease model; Drug resistance; Epithelium; Extrinsic asthma; Goals; Healthcare Systems; Human; Immune; Immune response; Immunomodulators; Incidence; Inflammatory; Interferon Type I; Interferon alpha; Interleukin-10; Investigation; Link; Lung; Molecular; Pathogenesis; Pathway interactions; Persons; Play; Public Health; Publishing; Pulmonary Inflammation; Refractory Disease; Role; Sampling; Signal Transduction; Steroids; Th2 Cells; United States; Work; airway hyperresponsiveness; allergic airway disease; burden of illness; cytokine; effective therapy; interleukin-22; mucus hypersecretion; new therapeutic target; novel; novel therapeutic intervention; pre-clinical; receptor; repaired; targeted treatment

PROJECT SUMMARY Allergic asthma affects approximately 300 million people worldwide. As the incidence of asthma continues to rise, studies linking immune and pathophysiologic mechanisms to asthma endotypes are of great importance to establish more targeted and effective therapies. Severe, steroid-insensitive (non-eosinophilic) asthma accounts for greater than half the current disease burden, but few studies have focused on modeling this disease subset. In severe refractory disease, allergen-specific, steroid-insensitive T helper (Th) 17 and/or Th2 cells are thought to critically orchestrate asthma pathogenesis, resulting in pulmonary inflammation, mucus hypersecretion, and airway hyperresponsiveness. The Th17 immune cytokine interleukin (IL)-22 plays a vital role in maintaining epithelial integrity and promoting repair. IL-22 receptor alpha-2 (IL-22Ra2), a soluble receptor for IL-22, inhibits its activity. The significance of IL-22 and endogenous IL-22Ra2, as well as the pathways that regulate them in severe asthma, are unknown. Aside from IL-22Ra2, type I interferons (IFN), consisting of IFNα subtypes and IFNβ, are immunomodulators that alter IL-10 and IL-22 signaling in certain inflammatory disease contexts. Based on our preliminary and published findings, we hypothesize that IL- 22Ra2 and type I IFNs perpetuate severe allergic airway disease (AAD) by blocking IL-22 signaling, which is necessary to alleviate AAD and maintain epithelial integrity in the lung. The following aims will investigate this hypothesis: 1) Investigate whether IL-22Ra2 modulates severe AAD by altering IL-22 bioavailability in the lung, 2) Determine if type I IFNs promote severe AAD by inducing IL-22Ra2 and limiting IL-22 activity in the lung, and 3) Examine if IL-22 signaling in the epithelium of the lung alleviates severe AAD and maintains epithelial integrity in the lung. The proposed work in this application will pioneer investigations into the role of IL-22Ra2 and type I interferons as regulators of allergic disease and will uncover the potential molecular mechanisms by which the IL-22 axis protects the lung epithelium during AAD. This novel work in a preclinical animal model and human samples will uncover new therapeutic targets for the treatment of severe asthma that is poorly responsive to standard therapies.

项目总结

项目成果

Insights Into Type I and III Interferons in Asthma and Exacerbations.

• DOI: 10.3389/fimmu.2020.574027
• 发表时间: 2020
• 期刊: Frontiers in immunology
• 影响因子: 7.3
• 作者: Rich HE;Antos D;Melton NR;Alcorn JF;Manni ML
• 通讯作者: Manni ML