Response of the Gut Microbiome and Circulating Metabolome to Diet Intervention in Young Children: Ancillary Study to the Keeping Ideal Cardiovascular Health Family Intervention Trial (KIDFIT)

幼儿肠道微生物组和循环代谢组对饮食干预的反应：保持理想心血管健康家庭干预试验 (KIDFIT) 的辅助研究

• 批准号: 10310469
• 负责人: Amanda K Marma
• 金额: $ 18.89万
• 依托单位: LURIE CHILDREN'S HOSPITAL OF CHICAGO
• 依托单位国家: 美国
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-12-15 至 2023-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10310469
• 关键词: 5 year old; Address; Adolescent; Adult; Age; Ancillary Study; Animal Experiments; Animal Model; Animals; Atherosclerosis; Beginning of Life; Bioinformatics; Biological Markers; Biology; Birth; Blood; Blood Pressure; Body fat; Body mass index; Branched-Chain Amino Acids; Cardiology; Cardiovascular Diseases; Cessation of life; Chemicals; Child; Childhood; Chronic Disease; Clinical; Clinical Trials; Collection; Communities; Complement; Conduct Clinical Trials; Coronary Arteriosclerosis; Coronary heart disease; Custom; DASH diet; DNA; Data; Development; Diet; Dietary Intervention; Dietary Practices; Disease; Ensure; Environment; Epidemiologist; Epidemiology; Evaluation; Family health status; Fellowship; Foundations; Funding; Genes; Goals; Health; Health Promotion; Human; Intervention; Intervention Studies; Intervention Trial; K-Series Research Career Programs; Knowledge; Lead; Life; Link; Lipids; Measures; Mediation; Mentors; Mentorship; Metabolic; Metabolic Pathway; Metabolism; Methods; Modeling; Molecular; Molecular Biology; Mothers; National Heart, Lung, and Blood Institute; National Research Service Awards; Nursery Schools; Nutritional; Obesity; Obesity Epidemic; Outcome; Overnutrition; Overweight; Participant; Partner in relationship; Pathway Analysis; Pathway interactions; Pediatric Hospitals; Phenotype; Pregnancy; Preventive; Prevotella; Public Health; Research; Research Personnel; Resources; Risk; Sampling; Scientist; Serum; Strategic vision; Stroke; Systems Biology; Testing; Time; Training; Transcript; Translating; Translational Research; Translations; Universities; Validation; Work; aged; animal data; base; biological systems; blood lipid; cardiovascular disorder prevention; cardiovascular disorder risk; cardiovascular health; cardiovascular risk factor; career; clinical application; clinically relevant; design; dietary; early childhood; experience; gut health; gut microbes; gut microbiome; high risk; insight; metabolic phenotype; metabolome; metabolomics; microbial; microbiome; multidisciplinary; novel; obese mothers; obesity in children; obesity risk; offspring; overweight child; pediatric cardiologist; preservation; prevent; programs; response; skills; small molecule; translational research program; trial design; validation studies

PROJECT SUMMARY/ABSTRACT The majority of deaths from cardiovascular disease (CVD) in US adults ages 25-54 years are associated with suboptimal diet. While diet is an important target of CVD prevention efforts in adults, intervention on the childhood diet may be more effective. Animal data suggest that early-life diet has the unique potential to modulate biological systems and durably program a child’s biology for long-term health or disease. Yet, although NHLBI’s Strategic Vision Objective 1 prioritizes understanding how diet modulates biological systems such as the micro- biome and metabolome to sustain health, only limited animal and observational adult data exist. The objective of this application is to define the molecular effects of a dietary pattern intervention on the gut microbiome and circulating metabolome in young children. This objective will be attained through an ancillary study to a funded clinical trial that tests the effects of a 12-month Dietary Approaches to Stop Hypertension (DASH) diet interven- tion on adiposity and other CVH metrics (e.g., blood pressure, lipids) in 3- to 5-year old children (n=140). Using additional participant samples, deep phenotyping and advanced bioinformatics, the proposed work will address three specific aims. First, it will test the effect of the DASH diet intervention on the gut microbiome, including abundances of microbial taxa, communities, and metabolism-related genes and transcripts. Second, it will define the associations of diet and the gut microbiome with the circulating metabolome. Using targeted and nontargeted metabolomics approaches, blood metabolites, metabolite networks, and metabolic pathways will be evaluated. Finally, in an exploratory fashion, it will probe pathways linking the diet intervention with subsequent adiposity and CVH metrics, through the gut microbiome and serum metabolome. The expected outcome is a preliminary model of how the DASH diet alters the gut microbiome and circulating metabolome in young children, and how these alterations relate to short-term CVH outcomes. These pilot data can be validated in larger samples, and thereby contribute to eventual development of novel, targeted early-life dietary strategies to preserve ideal CVH. The proposed research will also be leveraged as a training platform for Amanda Marma Perak, MD, who aims to have an independent translational research program focused on understanding early-life determinants of CVH and developing strategies to preserve life-long CVH. A team of prominent scientists will provide mentorship in a rich research developmental environment at Northwestern University and Lurie Children’s Hospital. Customized didactic, experiential, and professional development activities will complement mentored research experience to ensure that Dr. Perak attains her short-term training goals to gain expertise in, first, systems biology molecular methods and translation of mechanistic insights for clinical relevance, and second, clinical trials conduct. These plans and resources will ensure that in 5 years, Dr. Perak is a molecular epidemiologist and pediatric cardiologist who can lead multidisciplinary teams in translational research, taking new ideas through epidemiologic evalua- tion, mechanistic study, and clinical application, with a sustained impact on the field of pediatric CVH promotion.

项目总结/摘要 在美国25-54岁的成年人中，大多数心血管疾病（CVD）死亡与以下因素相关： 不理想的饮食虽然饮食是成年人心血管疾病预防工作的重要目标，但对 儿童饮食可能更有效。动物数据表明，早期生活饮食具有独特的潜力， 生物系统和持久编程儿童的生物学长期健康或疾病。然而，尽管NHLBI的 战略愿景目标1优先考虑了解饮食如何调节生物系统，如微 生物群系和代谢群系来维持健康，只有有限的动物和观察性成人数据。客观 本申请的目的是定义饮食模式干预对肠道微生物组的分子效应， 循环代谢组学这一目标将通过一项辅助研究来实现， 一项临床试验，测试了12个月的饮食方法来阻止高血压（DASH）饮食干预的效果， 关于肥胖和其他CVH度量（例如，血压，血脂）在3至5岁的儿童（n=140）。使用 额外的参与者样本，深度表型分析和先进的生物信息学，拟议的工作将解决 三个具体目标。首先，它将测试DASH饮食干预对肠道微生物组的影响，包括 微生物分类群、群落以及代谢相关基因和转录本的丰度。其次，它将定义 饮食和肠道微生物组与循环代谢组的关联。使用目标和非目标 将评估代谢组学方法、血液代谢物、代谢物网络和代谢途径。 最后，以探索性的方式，它将探索将饮食干预与随后的肥胖联系起来的途径 和CVH指标，通过肠道微生物组和血清代谢组。预期结果是初步的 DASH饮食如何改变幼儿肠道微生物组和循环代谢组的模型，以及 这些改变与短期CVH结果有关。这些试点数据可以在更大的样本中验证， 从而有助于最终开发新的、有针对性的早期生活饮食策略，以保持理想的CVH。 拟议的研究也将作为阿曼达玛霹雳州，医学博士，谁的目标是培训平台的杠杆作用 拥有一个独立的转化研究项目，专注于了解CVH的早期决定因素 并制定策略以保护终身CVH。一个由杰出科学家组成的团队将在一个 西北大学和Lurie儿童医院丰富的研究发展环境。定制 教学，体验和专业发展活动将补充指导的研究经验， 确保霹雳州博士实现她的短期培训目标，以获得专业知识，首先，系统生物学分子 方法和临床相关性的机械见解的翻译，以及第二，临床试验的进行。这些 计划和资源将确保在5年内，霹雳州医生成为分子流行病学家和儿科心脏病学家 谁可以领导多学科团队在转化研究，通过流行病学评估采取新的想法， 研究、机理研究和临床应用，对小儿CVH领域的推广产生持续影响。