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:10541164
- 负责人:
- 金额:$ 59.66万
- 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 2024-04-02
- 项目状态:已结题
- 来源:
- 关键词:AbbreviationsAccelerationAcuteAdipose tissueAdultAgeAgonistAnimal ExperimentsAnimal ModelBacteriaBehavioralBody CompositionChIP-seqComplexConceptionsDevelopmentDiabetes MellitusDietDietary InterventionDiseaseDoseEconomic BurdenEnvironmentEnvironmental Risk FactorEquilibriumExperimental ModelsExposure toFlame RetardantsGene ExpressionGeneticGerm-FreeGrowthHealthHistopathologyHumanHuman MilkIndolesInflammationInflammatoryIntestinal DiseasesIntestinal permeabilityIntestinesInvestigationIslets of LangerhansLactationLifeLigandsLinkLiteratureLiverMediatingMetabolicMetabolic DiseasesMetabolic syndromeMetabolismMetagenomicsMusNatureNeonatalNon-Insulin-Dependent Diabetes MellitusNuclear ReceptorsObesityOralOutcomePancreasPathway interactionsPerformancePhenotypePregnancyPrevalencePropionic AcidsReceptor ActivationReceptor SignalingRegimenResearchRisk FactorsRodentSamplingSerumTestingThyroid GlandTissuesToxic Environmental SubstancesToxicologyTransgenic MiceTransgenic OrganismsTryptophanTryptophan Metabolism PathwayUnited StatesWeaningXenobioticscell injurychemokinecytokinediabeticdiabetogenicdietary controldietary supplementsdysbiosisenergy balanceenvironmental chemicalepidemiology studyfecal transplantationfood consumptiongene environment interactionglucose tolerancegut dysbiosisgut microbiomehuman modelhumanized mouseinsulin secretioninsulin sensitivityinsulin tolerancelipophilicitymetabolic phenotypemetabolomicsmicrobialmicrobiomemouse modelneurotoxicitynew 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.
项目总结:
--
糖尿病是一种严重的流行病,造成严重的社会问题和经济负担。这一复杂的疾病通常是由癌症引起的。
遗传、代谢、行为、遗传和环境影响因素之间的相互作用。流行病学研究动物和动物。
实验表明,发育迟缓的环境毒物暴露更容易导致环境毒物的持续存在。
多溴联苯醚(PBDEs)与糖尿病患病率和持续性疾病的增加密切相关。
糖尿病的表型出现在成年期。然而,控制儿童早期生活的机制是PDBE和暴露。
糖尿病的表型可能仍不清楚,目前的文献支持肠道和肠道之间的机械性遗传联系。
微生物群和代谢紊乱综合征在人类和其他动物模型中存在。我们的研究表明,口腔环境暴露与多溴二苯醚有关联。
在成年小鼠中,他们的结果是导致生物失调,已知细菌的深刻变化可能与炎症有关。
还有肥胖,以及减少色氨酸对微生物代谢产物的影响,包括吲哚类化合物,这些都是新的营养激活剂。
其中一个主要是PXR(PXR),据了解,PXR可能导致肥胖和糖尿病。我们的研究建立在我们的基础上。
研究结果表明,PXR和PBDEs之间存在着一种新的基因-环境相互作用机制,这种相互作用是通过肠道、微生物组和环境之间的相互作用来实现的。
吲哚类代谢物,我们可以寻求方法来建立发育和多溴二苯醚与暴露之间的因果关系,例如。
通过使用人源化的PXR和转基因小鼠(hPXR-Tg),改变了他们的肠道微生物组,以及后来患糖尿病的人的生活。
常规药物(CV)和无菌药物(GF)的背景。我们假设发育不良的多溴联苯醚暴露在环境中。
导致急性呼吸窘迫和持续性的生物失调,这是通过抑制微生物代谢而导致糖尿病的。
色氨酸参与新陈代谢,选择性PXR调节蛋白(SPXRm)在早期及以后的生命中发挥作用。这是为了测试我们的能力
假设,我们的目标是1,我们将无法确定发育相关多溴二苯醚的暴露是否会扰乱肠道、微生物组和环境。
色氨酸的微生物代谢障碍,是导致sPXRm在生命早期和以后死亡的主要原因。在目标2中,我们将无法确定。
无论是微生物代谢产物,主要是吲哚类和吲哚类衍生物,都能有效减少炎症反应。
在多溴联苯醚暴露后抢救糖尿病患者的表型。在目标3中,我们不能确定这一点。
对肠道和微生物组进行重新编程,使用粪便器官移植和机械移植,有助于促进多溴联苯醚的发展。
暴露介导了PXR信号的中断,并推迟了糖尿病的发病。这是他们预期的结果。
提出的这项研究是一种全新的人类研究范式,它展示了肠道和微生物群的生态失调。
从机制上讲,多溴二苯醚暴露导致的糖尿病和代谢性糖尿病综合征导致的早期生命,以及后来的生命中的代谢性代谢综合征。
更重要的是,它使我们能够采取一种新的毒理-元基因组学方法,针对由癌症引起的代谢代谢紊乱。
接触多溴二苯醚可能会增加其他非持久性的有机污染物。
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:
$ 59.66万 - 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:
$ 59.66万 - 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:
$ 59.66万 - 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:
10320845 - 财政年份:2019
- 资助金额:
$ 59.66万 - 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:
$ 59.66万 - 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:
$ 59.66万 - 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:
$ 59.66万 - 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:
$ 59.66万 - 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:
$ 59.66万 - 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:
$ 59.66万 - 项目类别:
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