Modulating Alzheimer's Disease progression by preserving intestinal health.
通过保持肠道健康来调节阿尔茨海默病的进展。
基本信息
- 批准号:9371845
- 负责人:
- 金额:$ 13.21万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2017
- 资助国家:美国
- 起止时间:2017-08-01 至 2019-07-31
- 项目状态:已结题
- 来源:
- 关键词:AffectAgeAgingAlzheimer&aposs DiseaseAlzheimer&aposs disease modelAmyloid beta-ProteinAmyloid depositionAntibioticsAntibodiesBacteriaBloodBrainCause of DeathCellsDataDepositionDevelopmentDevelopment PlansDiseaseDisease ProgressionDrosophila genusDysplasiaEncephalitisEtiologyGeneticGenetic TranscriptionHealthHemolymphHousingHumanImmuneImmunochemistryInflammationInflammatoryInflammatory ResponseInflammatory disease of the intestineInterventionIntestinesInvestigationLife Cycle StagesLongevityMediatingMentorsMethodologyMicrobeModelingMolecularMusNatureNerve DegenerationNeurobiologyNeurogliaNeuronsOrganismPathway interactionsPeptidesPeptidoglycanPharmacologic SubstancePhenotypePhysiologicalPopulationProcessProteinsRegimenReporterResearchRoleScientistSeveritiesSignal PathwaySignal TransductionSorting - Cell MovementStressStudy modelsSymbiosisSymptomsTechnical ExpertiseTestingTherapeuticTimeTissuesUnited StatesWestern Blottingage relatedamyloid peptideantimicrobial peptidebasecareer developmentcommensal microbescostcytokinedisease phenotypeexperienceflygenetic manipulationglial activationgut microbiomeimprovedmicrobialmicrobiomenegative affectneuron lossneuronal growthoverexpressionpreventprogramsreduce symptomsresponsetooltranscription factortranslational approach
项目摘要
PROJECT SUMMARY/ABSTRACT
Alzheimer’s Disease (AD) is the 6th leading cause of death in the United States, and is estimated to cost more than
$200B/year. Uniquely among the top ten causes of death, we have little ability to treat or prevent the disease. Although
the precise etiology of AD is still under investigation, strong evidence suggests a causative role for systemic
inflammation. The Jasper lab and others have shown that a healthy microbiome is essential for regulating intestinal
inflammation. A recent study demonstrated reduced Aβ plaque deposition and microglial activity when treating a mouse
AD model with long‐term antibiotics, suggesting that inflammation related to commensal bacteria could regulate
disease progression.
My preliminary data indicates that inflammatory cytokines from the Drosophila intestine reach the CNS and activate
JAK/STAT signaling in a subset of glial cells. Reducing intestinal loads ameliorates this signaling, reduces aggregate
formation and neurodegeneration in a fly model of AD, and improves health and survival. Here, I propose a mechanistic
study to delineate the signaling pathways and physiological consequences of intestinal inflammation reaching the brain.
My hypothesis is that commensal bacteria can induce secretion of cytokines from the intestine into the (blood‐
analogous) hemolymph, promoting neurodegenerative processes in brains burdened with the amyloid peptide Aβ42. My
research aims will establish how intestinal stress triggers inflammatory signaling and determine the nature of the
responsive glial cells in the brain. I will further establish the connection between this inflammatory response and Aβ
plaques, and apply both genetic and pharmaceutical interventions to reduce intestinal inflammation and thereby reduce
the phenotypes of the AD model.
My mentoring team consists of Prof. Heinrich Jasper, an expert on the Drosophila intestine and stress signaling, Prof.
Pejmun Haghighi, an expert on Drosophila neurobiology, and Prof. Dale Bredesen, an expert on AD. With their guidance I
will develop the conceptual understanding of neurobiology and AD, as well as the technical skills, required to carry out
this project and establish an independent research program. Their assistance will furthermore be invaluable in my
transition to independence as a scientist, as described in my career development plan.
项目总结/摘要
阿尔茨海默氏病(AD)是美国第六大死亡原因,估计花费超过200万美元。
2000亿美元/年。在十大死亡原因中,我们几乎没有能力治疗或预防这种疾病。尽管
AD的确切病因仍在研究中,强有力的证据表明全身性疾病的致病作用,
碧玉实验室和其他人已经表明,健康的微生物组对于调节肠道炎症至关重要,
最近的一项研究表明,当治疗小鼠时,
长期使用抗生素的AD模型,表明与肠道细菌相关的炎症可以调节
疾病进展。
我的初步数据表明,果蝇肠道的炎性细胞因子到达中枢神经系统,
JAK/STAT信号在神经胶质细胞亚群中的作用。减少肠道负荷可以改善这种信号,减少聚集
形成和神经退行性疾病的苍蝇模型,并改善健康和生存。在这里,我提出了一个机制,
这项研究描绘了肠道炎症到达大脑的信号通路和生理后果。
我的假设是肠道细菌可以诱导细胞因子从肠道分泌到血液中。
类似)血淋巴,促进大脑中淀粉样肽Aβ42的神经退行性过程。
研究目标将确定肠道应激如何触发炎症信号,并确定炎症的性质。
我将进一步建立这种炎症反应和Aβ之间的联系,
斑块,并应用遗传和药物干预,以减少肠道炎症,从而减少
AD模型的表型。
我的导师团队由海因里希碧玉教授组成,他是果蝇肠道和应激信号的专家。
果蝇神经生物学专家Pejmun Haghighi和AD专家Dale Bredesen教授在他们的指导下,
将发展神经生物学和AD的概念理解,以及技术技能,需要进行
这个项目,并建立一个独立的研究计划。他们的援助将进一步在我的宝贵
过渡到独立作为一个科学家,正如我的职业发展计划中所描述的。
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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{{ truncateString('Martin Borch Jensen', 18)}}的其他基金
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- 资助金额:
$ 13.21万 - 项目类别:
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