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.
项目摘要
糖尿病是一种流行病,造成严重的社会和经济负担。 这种复杂的疾病是由
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,发育过程中接触持久性环境毒物
多溴二苯醚 (PBDE) 与糖尿病患病率增加和持续存在相关
成年期糖尿病表型。 然而,控制生命早期 PDBE 暴露的机制和
导致糖尿病的表型仍然未知。 当前的文献支持肠道之间的机械联系
人类和动物模型中的微生物组和代谢综合征。 我们证明,口服接触多溴二苯醚
成年小鼠会导致生态失调,已知与炎症相关的细菌发生深刻变化
和肥胖,以及减少色氨酸微生物代谢物,包括吲哚,这是一种新型激活剂
宿主预加烷 X 受体 (PXR) 已知会导致肥胖和糖尿病。 建立在我们的
研究结果表明,PXR 和 PBDE 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,我们寻求建立发育性 PBDE 暴露之间的因果关系,
使用人源化 PXR 转基因 (hPXR-TG) 小鼠,肠道微生物组发生变化,并在生命后期出现糖尿病
传统 (CV) 和无菌 (GF) 背景。 我们假设发育过程中接触 PBDE
导致急性和持续的菌群失调,通过抑制微生物导致糖尿病
生命早期及以后的色氨酸代谢和选择性 PXR 调节 (sPXRm)。 测试我们的
假设,在目标 1 中,我们将确定发育过程中的 PBDE 暴露是否会扰乱肠道微生物组,以及
色氨酸的微生物代谢,导致生命早期及以后的 sPXRm。 在目标 2 中,我们将确定
微生物代谢物(主要包括吲哚和吲哚衍生物)是否可以减轻炎症和
挽救发育性 PBDE 暴露后的糖尿病表型。 在目标 3 中,我们将确定
使用粪便移植对肠道微生物组进行重新编程有助于促进 PBDE 的发育
暴露介导 PXR 信号传导的破坏并延迟糖尿病的发病。 预期结果
拟议的研究是一种新的研究范式,证明肠道微生物组的菌群失调
从机制上讲,会导致早年接触 PBDE 诱发糖尿病和晚年代谢综合征,
更重要的是,可以采用毒理学宏基因组学方法来针对代谢性疾病引起的疾病
接触多溴联苯醚和其他潜在的持久性有机污染物。
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
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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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