Functional Redundancy of Human Microbiome and its Implication in Fecal Microbiota Transplantation
Functional Redundancy of Human Microbiome and its Implication in Fecal Microbiota Transplantation
批准号:
10460355
负责人:
Yang-Yu LIU
金额:
$89.43万
依托单位国家:
美国
项目类别:
财政年份:
2019
资助国家:
美国
项目状态:
已结题
起止时间:
2019-08-15 至 2024-07-31
关键词:
BehaviorClinicalClinical ResearchClostridium difficileCommunitiesComplexDataData AnalysesDiseaseEcologyEcosystemEngraftmentGastrointestinal DiseasesGenomicsGoalsHealthHumanHuman MicrobiomeInfectionInflammatory Bowel DiseasesIrritable Bowel SyndromeKnowledgeLightMeasuresMedicalMetagenomicsMethodsMissionModificationNatureNetwork-basedOrganismOutcomePatientsPhylogenetic AnalysisPhysiologyPlayPopulationPublic HealthRecurrenceResearchResistanceRoleSamplingSystemTaxonomyTestingTherapeutic InterventionTranslatingUnited States National Institutes of HealthWhole-Genome Shotgun SequencingWorkautism spectrum disorderbasedysbiosiseffective therapyfecal transplantationgut microbiomegut microbiotaimprovedinnovationmicrobial communitymicrobiomemicrobiotamicrobiota transplantationmicroorganismmodels and simulationnovel strategiesresiliencestool samplesuccesstranslational impact
中文摘要
项目总结:
共生微生物在人类生命生理和疾病中发挥着至关重要的作用。尽管它们发展迅速。
扩大对人类肠道和微生物区系组成的认识,加深了我们对微生物的认识。
生态文明原则指导着高度复杂的生态系统和动态生态系统的组装过程和弹性过程。
肠道微生物区系的生态系统还很初级。随着新技术的发展,这种知识和知识的差距变得越来越成问题。
需要修改和修改微生物区系的方法,如粪便微生物区系和移植技术(FMT),目前正在进行中。
作为一种治疗性的干预措施,制定了一项新的研究计划的总体和目标框架,以期构建一项新的计划。
生态学框架需要进一步了解FMT在治疗复发的艰难梭菌感染病毒(RCDI)方面的疗效。
金融系统的水平。第二个中央银行假说是,第一个接收者在FMT之前的银行的主要功能和冗余度。
微生物区系可以用来预测供者的微生物区系植入的程度,也可以用来预测植入区的疗效。
FMT。作为生态学中的一个经典概念,功能冗余模型(FR)的意思是从系统发育角度分析。
互不相关的物种在不同的生态系统中发挥着相似的生物功能,以至于它们之间几乎可以互换。
对全球生态系统整体运行的影响。全球拟议的全球研究计划的主要理由是:
了解FMT在治疗RCDI疾病方面的潜在疗效,有助于将其转化为更好的理解。
它的主要疗效是治疗一系列其他与微生物群紊乱有关的疾病。由医生指导。
强劲的初步经济数据,以及中央银行假说,将通过追求三个具体的经济目标来进行检验:1)发展。
一种新的基于网络的分析方法可以对人类微生物组样本的样本内DNA进行定量。
申请人的初步测试结果表明,可以从微生物组样本的FR值中直接计算出来。
分类学研究概况,并成为基因组学内容和网络的重要参考。(2)制定一个可供研究的全球生态环境框架。
这一关系关系到一个重要微生物群落的抗性与其对新物种的抗性之间的关系。这一机制正在发挥作用。
假设是,微生物群落的样本内FFR水平越高,其抗药性就越强。
针对物种的添加,例如,通过FMT。包括生态建模/模拟和真实生物数据分析。
我们将继续进行临床试验,以进一步验证这一假说。(3)临床医学研究旨在测试FMT在临床上的疗效。
接受RCDI治疗的患者在FMT前的肠道微生物区系中有较高的FFR水平。粪便中的样本来自于接受FMT的患者。
他们各自的捐赠者名单将被收集起来,用于元基因组、全基因组和鸟枪式测序。
随后,研究了受者FMT前的微生物区系与移植物之间的关系,以及移植物的移植过程。
捐赠者特定的物种在FMT后对微生物群的影响,以及对FMT效果的影响将不会被定量评估。
分析。这种方法是一种创新的方法,因为它将重点从特定的分类体系或功能转移到一个体系。
利用网络技术和生态科学方法,提高对人类肠道和微生物群的认识水平。
提出的研究方案具有重要意义,因为它将提高我们对环境保护的基本生态原则的理解。
FMT适用于RCDI,也适用于与被破坏的微生物群相关的其他疾病。
英文摘要
Project Summary
Commensal microorganisms play critical roles in human physiology and diseases. Despite rapidly
expanding knowledge of the composition of the human gut microbiota, our understanding of the
ecological principles that govern the assembly and resilience of the highly complex and dynamic
ecosystem of the gut microbiota is rudimentary. This knowledge gap becomes more problematic as new
approaches to modify the microbiota, such as fecal microbiota transplantation (FMT), are being
developed as therapeutic interventions. The overall objective of the proposed studies is to construct an
ecological framework to understand the efficacy of FMT in treating recurrent C. difficile infection (rCDI) at
the systems level. The central hypothesis is that the functional redundancy of the recipient’s pre-FMT
microbiota can be used to predict the extent of donor microbiota engraftment and predict the efficacy of
FMT. As a classical concept in ecology, functional redundancy (FR) means that phylogenetically
unrelated species perform similar functions in ecosystems so that they can be interchanged with little
impact on the overall ecosystem functioning. The rationale for the proposed research is that
understanding the efficacy of FMT in treating rCDI has the potential to translate into better understanding
of its efficacy in treating a variety of other diseases associated with disrupted microbiomes. Guided by
strong preliminary data, the central hypothesis will be tested by pursuing three specific aims: 1) Develop
a network-based method to quantify the within-sample FR of human microbiome samples. The
applicant’s preliminary results suggest that the FR of a microbiome sample can be calculated from its
taxonomic profile and a reference genomic content network. 2) Develop an ecological framework to study
the relationship between the FR of a microbial community and its resistance to new species. The working
hypothesis is that the higher the within-sample FR of a microbial community, the more resistant it is
against species addition, e.g., through FMT. Both ecological modeling/simulations and real data analysis
will be performed to verify this hypothesis. 3) Clinical study to test that FMT has a lower efficacy in
treating rCDI patients with higher FR in their pre-FMT microbiota. Stool samples from the recipients and
their respective donors will be collected for metagenomic whole genome shotgun sequencing.
Subsequently, the relationships among the FR of the recipients’ pre-FMT microbiota, the engraftment of
donor-specific species in the recipients’ post-FMT microbiota, and the FMT efficacy will be quantitatively
analyzed. The approach is innovative because it shifts focus from specific taxa or functions to a systems
level understanding of the human gut microbiome using network and ecological approaches. The
proposed research is significant because it will improve our understanding on the ecological principles of
FMT for rCDI as well for other conditions associated with disrupted microbiomes.
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会议论文
Functional Redundancy of Human Microbiome and its Implication in Fecal Microbiota Transplantation
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批准号:10668456
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项目类别:
-
资助金额:$89.43万
-
财政年份:2019
-
负责人:Yang-Yu LIU
-
依托单位:
Functional Redundancy of Human Microbiome and its Implication in Fecal Microbiota Transplantation
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批准号:10226202
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项目类别:
-
资助金额:$89.43万
-
财政年份:2019
-
负责人:Yang-Yu LIU
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依托单位:
国内基金
海外基金
Molecular Interaction Reconstruction of Rheumatoid Arthritis Therapies Using Clinical Data
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批准号:31070748
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项目类别:面上项目
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资助金额:34.0万元
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批准年份:2010
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负责人:Christine Nardini
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依托单位: