Deciphering the roles of eosinophils and T lymphocytes in EGID

解读嗜酸性粒细胞和 T 淋巴细胞在 EGID 中的作用

• 批准号: 10663530
• 负责人: Fei Li Kuang
• 金额: $ 19.1万
• 依托单位: NORTHWESTERN UNIVERSITY AT CHICAGO
• 依托单位国家: 美国
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-02-01 至 2028-01-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10663530
• 关键词: Address; Adrenal Cortex Hormones; Affect; Allergic; Allergic Disease; Area; Automobile Driving; Award; Biological Markers; Biological Products; Blood; Career Mobility; Caring; Cell surface; Cells; Characteristics; Chronic; Cicatrix; Clinical; Clinical Research; Data; Dedications; Deglutition; Diagnosis; Diagnostic; Diagnostic tests; Diet; Disease; Disease remission; Disparate; Disseminated eosinophilic collagen disease; Elemental Diets; Eosinophilia; Eosinophilic Esophagitis; Eosinophilic Gastritis; Eosinophilic Gastrointestinal Disease; Esophagus; Evaluation; Flow Cytometry; Food; Food Hypersensitivity; Gastrointestinal Diseases; Gastrointestinal tract structure; Genes; Human; Hypersensitivity; IL17 gene; IL5 gene; IgE; Immune; Immune response; Immunology; Immunophenotyping; Inflammation; Inflammatory; Interferon Type II; Interleukin-13; Interleukin-5; K-Series Research Career Programs; Knowledge; Lymphocyte; Mediating; Mentored Patient-Oriented Research Career Development Award; Mentors; Mentorship; Methods; Molecular; Monitor; Morbidity - disease rate; Outcome Measure; Pathogenesis; Pathogenicity; Pathway interactions; Patient Care; Patient Outcomes Assessments; Patients; Physicians; Play; Process; Production; Publishing; Quality of life; RNA; RNA purification; Research; Resolution; Role; Sampling; Scientist; Specificity; Steroids; Symptoms; T-Lymphocyte; T-cell receptor repertoire; Technology; Testing; Th2 Cells; Tissue-Specific Gene Expression; Tissues; Training; Transcript; Universities; Upper digestive tract structure; career development; cell type; cohort; cytokine; dietary; duodenitis; environmental allergy; eosinophil; eosinophilic asthma; eosinophilic inflammation; food antigen; improved; innovation; interest; medical schools; memory CD4 T lymphocyte; new therapeutic target; noninvasive diagnosis; novel; professor; recruit; response; rhinoconjunctivitis; single-cell RNA sequencing; transcriptome sequencing; treatment effect; treatment response

ABSTRACT Dr. Fei Li Kuang is an Assistant Professor in the Division of Allergy and Immunology at Northwestern University Feinberg School of Medicine. Her clinical and research interests focus on eosinophilic disorders, including eosinophilic gastrointestinal disorders (EGIDs), inflammatory diseases defined by excessive numbers of GI tissue eosinophils as result of an inappropriate prolonged Th2 response to food antigens. Both eosinophilic esophagitis (EoE) and non-esophageal EGIDs such as eosinophilic gastritis/duodenitis (EG/EoD) are associated with significant morbidity and have a profoundly negative impact on quality of life. When untreated, there is progressive scarring of the affected GI tract segments that is not easily reversible. While both eosinophils and specialized Th2 cells are implicated in EGID pathogenesis, numerous questions remain as to their precise roles. This application proposes to focus on what is different about eosinophils in EGID as compared to myriad number of other eosinophilic disorders accompanied by excessive blood eosinophilia. Similarly, specialized Th2 cells are invoked to be biomarkers of disease in IgE-mediated disorders such as food allergy and allergic rhino-conjunctivitis, which are markedly different allergic diseases from EGID, so what makes these cells different in EGID will also be examined. This career development award, under the mentorship of Dr. Bruce Bochner, focuses on investigating the cellular and molecular mechanisms of EGID pathogenesis. to advance the understanding of this disease process. Dr. Kuang has preliminary evidence suggesting that there are unique blood eosinophil signatures in EGIDs that distinguish them from blood eosinophils in other eosinophilic disorders, and that specialized circulating Th2 cells in EGIDs differ from those identified in more traditional IgE-mediated atopic conditions, and that quantitative and qualitative changes in both cell types track with response to therapy and disease remission. The central hypothesis of this proposal is that unique blood eosinophil and T lymphocyte signatures define EGID as a clinical entity distinct from other eosinophilic disorders or food- triggered diseases. This will be addressed by 3 non-overlapping but complementary aims: 1) Definition of unique blood eosinophil signatures in EGID that distinguish it from other eosinophil-associated disorders or atopic disorders with blood eosinophilia; 2) Precise identification of the specialized Th2 cells in EGID as compared to food allergy; 3) Evaluation of the effect of dietary and steroid treatment on blood eosinophil and specialized Th2 lymphocyte signatures in EGID This innovative study will use novel data generated by Dr. Kuang to further investigate areas of EGID that are currently poorly understood. Importantly, this award will provide Dr. Kuang with additional career development and training needed to build her own successful research team, establish independence from her mentor and significantly advance her career studying EGID pathogenesis.

摘要 博士Fei Li Kuang是西北大学过敏和免疫学系的助理教授 范伯格大学医学院。她的临床和研究兴趣集中在嗜酸性粒细胞疾病， 包括嗜酸性胃肠疾病（EGID）、由过度炎症引起的炎性疾病、 胃肠道组织嗜酸性粒细胞的数量，作为结果的不适当的延长Th 2反应的食物抗原。 嗜酸性粒细胞性食管炎（EoE）和非食管EGID，如嗜酸性粒细胞性胃炎/胃炎 (EG/EoD）与显著的发病率相关，并对生活质量产生深远的负面影响。 如果不治疗，受影响的胃肠道节段会出现进行性瘢痕形成，这是不容易逆转的。 虽然嗜酸性粒细胞和特化Th 2细胞都参与EGID发病机制，但许多 至于它们的确切作用，仍有疑问。此应用程序建议重点关注 EGID中的嗜酸性粒细胞与无数其他伴有 血嗜酸性粒细胞过多。类似地，特化的Th 2细胞被援引为疾病的生物标志物， IgE介导的疾病，如食物过敏和过敏性鼻结膜炎， 过敏性疾病，所以什么使这些细胞在EGID不同也将被检查。 在布鲁斯·博什纳博士的指导下，这个职业发展奖专注于调查 EGID发病机制的细胞和分子机制。来增进对这种疾病的了解 过程匡医生有初步证据表明，有独特的血液嗜酸性粒细胞签名 在EGID中，将其与其他嗜酸性粒细胞疾病中的血液嗜酸性粒细胞区分开来， EGID中的循环Th 2细胞不同于在更传统的IgE介导的特应性病症中鉴定的那些， 并且这两种细胞类型的数量和质量变化都与对治疗和疾病的反应有关 缓解。这一建议的中心假设是，独特的血液嗜酸性粒细胞和T淋巴细胞 特征将EGID定义为不同于其他嗜酸性粒细胞性疾病或食物- 引发的疾病。这将通过三个不重叠但互补的目标来解决：1）定义 EGID中独特的血液嗜酸性粒细胞特征将其与其他嗜酸性粒细胞相关的 具有血液嗜酸性粒细胞增多症的疾病或特应性疾病; 2）精确鉴定特化的Th 2细胞 3）评价饮食和类固醇治疗对血液中的蛋白质的影响; EGID中的嗜酸性粒细胞和特化Th 2淋巴细胞特征 这项创新研究将使用Kuang博士生成的新数据进一步研究EGID的领域， 目前还知之甚少。重要的是，这个奖项将为邝博士提供额外的职业生涯 建立自己成功的研究团队、独立于 她的导师，并显着推进她的职业生涯研究EGID发病机制。