Gut Viral and Bacterial Associations with Celiac Disease in the TEDDY Cohort

TEDDY 队列中肠道病毒和细菌与乳糜泻的关联

• 批准号: 10249430
• 负责人: Daniel Agardh
• 金额: $ 13.18万
• 依托单位: BAYLOR COLLEGE OF MEDICINE
• 依托单位国家: 美国
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-09-01 至 2021-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10249430
• 关键词: Age; Autoantibodies; Autoantigens; Autoimmunity; Bacteria; Celiac Disease; Child; Conflict (Psychology); Data; Development; Diagnostic; Diet; Disease; Disease Outcome; Feces; Future; Genetic; Genetic Databases; Genetic Risk; Genomics; Gluten; Goals; Insulin-Dependent Diabetes Mellitus; Intake; International; Knowledge; Lead; Link; Outcome; Prevention strategy; Preventive Intervention; Prospective cohort; Quantitative Reverse Transcriptase PCR; Research Project Grants; Risk; Risk Factors; Role; Serological; Serum; Structure; Time; Variant; Viral; Virus; Virus Diseases; Work; case control; cohort; design; early childhood; genetic analysis; genetic variant; innovation; insight; microbiome; microbiome components; next generation sequencing; prospective; response; stool sample; synergism; virome

The goal of this project is to examine stool and sera of 900 children previously collected from the prospective cohort TEDDY study, to determine if changes in microbiome or virus infections or both are linked to development of autoimmunity that leads to celiac disease. Previous studies and emerging evidence have implicated several viruses and microbiome signatures with celiac disease but have not proven strong linkage and have resulted inconclusive findings for the celiac disease field. The current application is an ancillary research project of the large international 15 year prospective TEDDY Study that is designed to find environmental triggers of Type 1 Diabetes and has had 297 children develop celiac disease but not T1D autoimmunity. The project will utilize the large scale and international scope of TEDDY and its rich genetic and dietary data on these children, to study this new celiac case-control cohort. We will use proven next generation sequencing, qRT-PCR and serologic approaches recently carried out for microbiome and virome analysis for T1D outcomes with TEDDY. Aim 1 will discover and analyze the complete stool virome in these children over time, before conversion to tTGA autoimmunity and celiac disease, to identify viruses associated with celiac autoimmunity and disease. Aim 2 will examine the microbiome structure over time to determine bacterial taxa or functions associated with celiac disease development and will derive complete genomic sequences of key variant bacteria found associated with disease outcomes. Both of these aims will identify agents that contribute independently to the risk of celiac outcomes, controlling for confounders or other components of the disease with regression approaches. Aim 3 will probe further to determine if there is synergy or interactions of viruses or bacteria with other known risk factors such as the child's gluten intake and genetic risk (HLA and known associated SNPs). This will identify the set(s) of components that may contribute synergistically to cause CD outcomes. The proposed work is significant since it will apply the power of the larger and international TEDDY cohort and its rich database of genetic analyses of children to study progressively collected stools and sera to determine viruses and/or microbiome signatures that are linked to tTGA autoimmunity and celiac disease. The proposed work is innovative because it will provide the first comprehensive analysis of virome and microbiome components sufficient to cause celiac disease outcomes that may work synergistically. These findings will lead to a better understanding of what triggers celiac disease that will be more relevant for developing hypotheses of causal mechanisms and will open conceptual avenues for key diagnostic or preventative interventions.

该项目的目标是检查900名儿童的粪便和血清，这些儿童是以前从前瞻性研究中收集的。 TEDDY队列研究，以确定微生物组或病毒感染或两者的变化是否与 导致乳糜泻的自身免疫的发展。先前的研究和新出现的证据表明， 提示几种病毒和微生物组特征与乳糜泻有关，但尚未证明存在强关联 并且在乳糜泻领域中得到了不确定的发现。当前应用程序是一个辅助应用程序， 大型国际15年前瞻性TEDDY研究的研究项目，旨在发现 环境触发1型糖尿病，并有297名儿童患上乳糜泻，但不是T1 D 自身免疫该项目将利用TEDDY的大规模和国际范围及其丰富的遗传和 这些儿童的饮食数据，以研究这个新的乳糜泻病例对照队列。接下来我们将使用经过验证的 最近针对微生物组和病毒组进行的世代测序、qRT-PCR和血清学方法 使用TEDDY分析T1 D结局。目的1发现并分析这些患者的完整粪便病毒组 随着时间的推移，在转换为tTGA自身免疫和乳糜泻之前， 腹腔自身免疫和疾病Aim 2将随着时间的推移检查微生物组结构， 与乳糜泻发展相关的细菌分类群或功能，并将衍生出完整的基因组 发现与疾病结果相关的关键变异细菌序列。这两个目标将确定 独立促成乳糜泻结局风险的药物，控制混杂因素或其他 用回归方法分析疾病的组成部分。目标3将进一步调查以确定是否存在 病毒或细菌与其他已知风险因素的协同作用或相互作用，如儿童的麸质摄入量， 遗传风险（HLA和已知相关SNP）。这将确定可能有助于 协同地导致CD结果。拟议的工作是重要的，因为它将适用的权力， 更大的国际TEDDY队列及其丰富的儿童遗传分析数据库 逐步收集粪便和血清，以确定与以下疾病相关的病毒和/或微生物组特征： tTGA自身免疫和乳糜泻。拟议的工作是创新的，因为它将提供第一个 足以导致乳糜泻结局的病毒组和微生物组成分的综合分析 可以协同工作。这些发现将导致更好地了解是什么触发乳糜泻 这将是更相关的发展假说的因果机制，并将开辟概念途径 用于关键的诊断或预防干预。