Developmental PBDE exposure, gut microbiome, and diabetes
发育性 PBDE 暴露、肠道微生物组和糖尿病
基本信息
- 批准号:10320845
- 负责人:
- 金额:$ 60.62万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-01-01 至 2023-12-31
- 项目状态:已结题
- 来源:
- 关键词:AbbreviationsAcuteAdipose tissueAdultAgeAgonistAnimal ExperimentsAnimal ModelAnimalsBacteriaBehavioralBody CompositionBreastChIP-seqComplexConceptionsDevelopmentDiabetes MellitusDietDietary InterventionDiseaseDoseEconomic BurdenEnvironmental Risk FactorEquilibriumExperimental ModelsExposure toGene ExpressionGeneticGerm-FreeGrowthHealthHistopathologyHumanIndolesInflammationInflammatoryIntestinal DiseasesIntestinesInvestigationIslets of LangerhansLactationLifeLigandsLinkLiteratureLiverMediatingMetabolicMetabolic DiseasesMetabolic syndromeMetabolismMetagenomicsMusNatureNeonatalNon-Insulin-Dependent Diabetes MellitusNuclear ReceptorsObesityOralOutcomePancreasPathway interactionsPerformancePhenotypePregnancyPrevalencePropionic AcidsReceptor ActivationReceptor SignalingRegimenResearchRisk FactorsSamplingSerumTestingThyroid GlandTissuesToxic Environmental SubstancesToxic effectToxicologyTransgenic OrganismsTryptophanTryptophan Metabolism PathwayWeaningXenobioticscell injurychemokinecytokinediabeticdiabetogenicdietary controldietary supplementsdysbiosisenergy balanceenvironmental chemicalepidemiology studyfecal transplantationfood consumptiongene environment interactionglucose tolerancegut dysbiosisgut microbiomehuman modelhumanized mouseinsulin secretioninsulin sensitivityinsulin tolerancelipophilicitymetabolic phenotypemetabolomicsmicrobialmicrobiomemouse modelnew therapeutic targetnovelpandemic diseasepersistent organic pollutantspolybrominated diphenyl etherpregnane X receptorpupreceptorsocial
项目摘要
PROJECT SUMMARY
Diabetes is a pandemic, causing grave social and economic burdens. This complex disease is caused by an
interaction among genetic, metabolic, behavioral, and environmental factors. Epidemiology studies and animal
experiments demonstrate that developmental exposure to the persistent environmental toxicants
polybrominated diphenyl ethers (PBDEs) is associated with increased diabetes prevalence and persistent
diabetic phenotype in adulthood. However, mechanisms governing early life PDBE exposure and the
diabetogenic phenotype remain unknown. Current literature supports the mechanistic link between gut
microbiome and metabolic syndrome in humans and animal models. We showed that oral exposure to PBDEs
in adult mice results in dysbiosis with profound changes in bacteria known to be associated with inflammation
and obesity, as well as reduced tryptophan microbial metabolites including indoles, which are novel activators
of the host pregane X receptor (PXR) which is known to contribute to obesity and diabetes. Building on our
findings that there is a gene-environment interaction between PXR and PBDEs through gut microbiome and
indole metabolites, we seek to establish a causal relationship between developmental PBDE exposure, a
change in the gut microbiome, and diabetes later in life using humanized PXR transgenic (hPXR-TG) mice in
conventional (CV) and germ-free (GF) background. We hypothesize that developmental PBDE exposure
causes acute and persistent dysbiosis, which contributes to diabetes through suppression of microbial
tryptophan metabolism and selective PXR modulation (sPXRm) in early life and beyond. To test our
hypothesis, in Aim 1 we will determine if developmental PBDE exposure perturbs the gut microbiome and
microbial metabolism of tryptophan, leading to sPXRm in early life and beyond. In Aim 2 we will determine
whether microbial metabolites, mainly including indoles and indole-derivatives, can reduce inflammation and
rescue the diabetic phenotype following developmental PBDE exposure. In Aim 3 we will determine that
reprogramming the gut microbiome using fecal transplant mechanistically contributes to developmental PBDE
exposure mediated disruption of PXR signaling and delayed onset of diabetes. The expected outcome of the
proposed research is a new research paradigm demonstrating that dysbiosis of the gut microbiome
mechanistically contributes to early life PBDE exposure-induced diabetes and metabolic syndrome later in life,
and more importantly, enables a toxico-metagenomics approach targeting metabolic disorders resulted from
exposure to PBDEs and potentially other persistent organic pollutants.
项目摘要
糖尿病是一种流行病,造成严重的社会和经济负担。
遗传、代谢、行为和环境因素之间的相互作用。流行病学研究和动物
实验表明,对持久性环境毒物的发育暴露
多溴联苯醚(PBDEs)与糖尿病患病率增加和持续性
然而,控制早期生活PDBE暴露和糖尿病表型的机制,
糖尿病的表型仍然是未知的。目前的文献支持肠道之间的机制联系,
微生物组和代谢综合征在人类和动物模型。我们表明,
在成年小鼠中导致微生态失调,已知与炎症相关的细菌发生深刻变化
和肥胖症,以及减少的色氨酸微生物代谢产物,包括吲哚,这是一种新型激活剂
孕激素X受体(PXR)的受体,这是众所周知的,有助于肥胖和糖尿病。 充分发挥两国
发现PXR和PBDEs之间通过肠道微生物组存在基因-环境相互作用,
吲哚代谢物,我们试图建立发育过程中多溴二苯醚暴露,
使用人源化PXR转基因(hPXR-TG)小鼠,
常规(CV)和无菌(GF)背景。我们假设发育中的多溴二苯醚暴露
导致急性和持续的生态失调,这有助于通过抑制微生物的糖尿病,
色氨酸代谢和选择性PXR调节(sPXRm)在生命早期及以后。为了测试我们的
假设,在目标1中,我们将确定发育中的多溴二苯醚暴露是否会扰乱肠道微生物组,
色氨酸的微生物代谢,导致sPXRm在生命早期和以后。在目标2中,我们将确定
是否微生物代谢物,主要包括吲哚和吲哚衍生物,可以减少炎症,
在发育过程中暴露于多溴联苯醚后挽救糖尿病表型。在目标3中,我们将确定
利用粪便移植对肠道微生物组进行重新编程,
暴露介导的PXR信号传导的破坏和糖尿病的延迟发作。
拟议的研究是一种新的研究范式,表明肠道微生物组的生态失调
在机械上有助于在生命早期接触多溴二苯醚-多溴联苯醚诱发糖尿病和在生命后期出现代谢综合征,
更重要的是,它使一种针对代谢紊乱的毒性-代谢宏基因组学方法成为可能,
接触多溴二苯醚和可能的其他持久性有机污染物。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Yue Cui其他文献
Yue Cui的其他文献
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{{ truncateString('Yue Cui', 18)}}的其他基金
PCB-mediated dysbiosis of the gut microbiome: A missing link in PCB-mediated neurodevelopmental disorders?
PCB 介导的肠道微生物群失调:PCB 介导的神经发育障碍中缺失的一环?
- 批准号:
10304131 - 财政年份:2020
- 资助金额:
$ 60.62万 - 项目类别:
PCB-mediated dysbiosis of the gut microbiome: A missing link in PCB-mediated neurodevelopmental disorders?
PCB 介导的肠道微生物群失调:PCB 介导的神经发育障碍中缺失的一环?
- 批准号:
10093046 - 财政年份:2020
- 资助金额:
$ 60.62万 - 项目类别:
PCB-mediated dysbiosis of the gut microbiome: A missing link in PCB-mediated neurodevelopmental disorders?
PCB 介导的肠道微生物群失调:PCB 介导的神经发育障碍中缺失的一环?
- 批准号:
10531940 - 财政年份:2020
- 资助金额:
$ 60.62万 - 项目类别:
Developmental PBDE exposure, gut microbiome, and diabetes
发育性 PBDE 暴露、肠道微生物组和糖尿病
- 批准号:
10541164 - 财政年份:2019
- 资助金额:
$ 60.62万 - 项目类别:
Epigenetic Regulation of Drug Metabolism by Developmental Exposure to PBDEs
多溴联苯醚发育暴露对药物代谢的表观遗传调控
- 批准号:
9265462 - 财政年份:2015
- 资助金额:
$ 60.62万 - 项目类别:
Epigenetic Regulation of Drug Metabolism by Developmental Exposure to PBDEs
多溴联苯醚发育暴露对药物代谢的表观遗传调控
- 批准号:
8937612 - 财政年份:2015
- 资助金额:
$ 60.62万 - 项目类别:
Epigenetic Regulation of Drug Metabolism by Developmental Exposure to PBDEs
多溴联苯醚发育暴露对药物代谢的表观遗传调控
- 批准号:
9125839 - 财政年份:2015
- 资助金额:
$ 60.62万 - 项目类别:
Developmental Regulation of Drug Metabolism by Targeting the Gut Microbiome
通过靶向肠道微生物群对药物代谢的发育调节
- 批准号:
9111950 - 财政年份:2014
- 资助金额:
$ 60.62万 - 项目类别:
Developmental Regulation of Drug Metabolism by Targeting the Gut Microbiome
通过靶向肠道微生物群对药物代谢的发育调节
- 批准号:
8750942 - 财政年份:2014
- 资助金额:
$ 60.62万 - 项目类别:
Developmental Regulation of Drug Processing Genes
药物加工基因的发育调控
- 批准号:
9060713 - 财政年份:2010
- 资助金额:
$ 60.62万 - 项目类别:
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