Probing Heterogeneity of Alzheimer's disease using iPSCs
使用 iPSC 探索阿尔茨海默病的异质性
基本信息
- 批准号:10400951
- 负责人:
- 金额:$ 48.93万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2018
- 资助国家:美国
- 起止时间:2018-07-15 至 2023-05-31
- 项目状态:已结题
- 来源:
- 关键词:AddressAdultAge of OnsetAgingAlzheimer&aposs DiseaseAlzheimer&aposs disease pathologyAlzheimer&aposs disease patientAmyloidAmyloid beta-ProteinAstrocytesAutopsyBrainBrain PathologyCategoriesCell LineCell modelCellsCellular AssayCerebral cortexClinicalClinical DataClinical TrialsCoculture TechniquesCognitionCognitiveCoupledDataData SetDegenerative DisorderDementiaDeteriorationDiseaseEarly InterventionEarly Onset Alzheimer DiseaseEarly intervention trialsEnzyme-Linked Immunosorbent AssayEnzymesEtiologyFunctional disorderFunding AgencyGenerationsGenesGeneticGoalsHeterogeneityHumanINPPL1 geneImpaired cognitionIn VitroIndividualInduced pluripotent stem cell derived neuronsInheritedInositolInterventionLate Onset Alzheimer DiseaseLocationMapsMeasurementMeasuresMemoryMemory LossMethodsMicrogliaMissense MutationModelingMolecularMolecular ProfilingMutationNerve DegenerationNeurodegenerative DisordersNeurofibrillary TanglesNeurogliaNeuronsOutcomePathogenesisPathologicPathologistPathologyPathway AnalysisPathway interactionsPeptide HydrolasesPhenotypePhosphoric Monoester HydrolasesPlayPredispositionProsencephalonProtein PrecursorsProteomeProteomicsRiskRisk FactorsRoleSenile PlaquesSeriesSignal PathwayStatistical ModelsStudy SubjectSubgroupSusceptibility GeneSystemSystems BiologyTauopathiesTestingTherapeutic InterventionWestern Blottingagedbrain cellbrain tissuechemokinecohortcomorbiditycytokinediagnostic toolearly detection biomarkersearly onsetextracellularfamilial Alzheimer diseasegenome wide association studyglial activationhuman subjecthyperphosphorylated tauimprovedinduced pluripotent stem cellinduced pluripotent stem cell technologyinositol-1,4,5-trisphosphate 5-phosphataseneuropathologyneurotoxicnovelpatient populationpatient subsetsphosphoinositide-3,4,5-triphosphatephosphoinositide-3,4-bisphosphatepredictive markerpresenilinprognostic toolreligious order studystem cellssymptom managementtargeted treatmenttau Proteinstau-1therapeutic developmenttherapeutically effectivetranscriptometranscriptome sequencingtranscriptomics
项目摘要
Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by dysfunction and deterioration of
neurons resulting in loss of memory and progressive cognitive decline. Current treatments are aimed only at
symptom management. Three barriers to effective therapeutic development include: 1) a lack of definition of the
heterogeneity of AD pathogenesis, 2) a lack of highly predictive biomarkers to facilitate early intervention, and
3) a need to identify pathways involved in cognitive decline and AD that can be targeted for therapeutic
intervention. We are using induced pluripotent stem cell (iPSC) technology coupled to comprehensive studies of
patient populations to interrogate the cellular and molecular mechanisms underlying AD in an effort to break
down these barriers. We propose that there exist multiple forms of AD that have different underlying causes, and
that multiple therapeutic interventions may be needed to address disparate etiologies. Through other funding
sources, we have generated 50 iPSC lines from two cohorts, the Religious Order Study (ROS) and the Memory
and Aging Project (MAP). Here, we propose to study these lines, where we focus upon three categories of
subjects that lie on the extreme ends of the pathological spectrum: 1) no brain pathology, not cognitively
impaired, 2) high pathology not cognitively impaired, and 3) high pathology, late onset Alzheimer’s disease. In
addition, we have generated and/or collected iPSC lines from familial AD subjects, which will be analyzed in
parallel. Using iPSC derived neurons, astrocytes, and microglia from 60 human subjects, we will measure AD
relevant outcomes (Aβ, p-tau, cytokines/chemokines) in Aim 1 and acquire unbiased transcriptomic and
proteomic data in Aim 2. These data will be integrated with clinical data, neuropathology data, and genetic data
acquired from the same subjects from whom the cells were derived using multiple computational approaches.
We hypothesize that: 1) Some pathological findings in the postmortem brain can be predicted by in vitro cellular
assays on iPSC derived neurons and glia (Aim 1), and 2) Both neuropathology and cognitive decline in some
human subjects can be predicted by transcriptomic and proteomic level network analyses of iPSC derived
neurons and glia. Preliminary data from 12 lines supports the premise that iPSC-derived cells will capture certain
cell and molecular signatures that define subgroups of aged adults. Data from all 50 ROS/MAP lines and EOAD
models generated in aims 1 and 2 will provide a well-defined framework to address mechanistic questions
regarding AD. In Aim 3 we will leverage the deeply characterized set of iPSC-derived cultures to address the
hypothesis that dysregulated inositol 5-phosphatase activity of INPP5D (SHIP1) and/or INPPL1 (SHIP2) leads
to an elevated risk for LOAD in a subset of subjects. Through these studies, we aim to evaluate whether iPSC-
derived cells can act as a diagnostic or prognostic tool for cognitive decline and AD, and begin to address the
cell and molecular mechanisms underlying heterogeneity in LOAD.
阿尔茨海默病 (AD) 是一种神经退行性疾病,其特征是神经功能障碍和恶化
神经元导致记忆丧失和认知能力进行性下降。 目前的治疗仅针对
症状管理。 有效治疗开发的三个障碍包括:1)缺乏对治疗的定义
AD 发病机制的异质性,2) 缺乏高度预测性的生物标志物来促进早期干预,以及
3) 需要确定与认知衰退和 AD 相关的途径,这些途径可以作为治疗的目标
干涉。 我们正在使用诱导多能干细胞 (iPSC) 技术,并结合以下方面的综合研究:
患者群体探究 AD 背后的细胞和分子机制,努力打破 AD
冲破这些障碍。 我们认为存在多种形式的 AD,它们具有不同的根本原因,并且
可能需要多种治疗干预措施来解决不同的病因。 通过其他资金
根据消息来源,我们从宗教秩序研究 (ROS) 和记忆这两个队列中生成了 50 个 iPSC 系
和老龄化项目(MAP)。 在这里,我们建议研究这些路线,其中我们重点关注三类
处于病理谱最极端的受试者:1)没有大脑病理学,没有认知病理学
受损,2) 高度病理,无认知障碍,以及 3) 高度病理,迟发性阿尔茨海默氏病。 在
此外,我们还从家族 AD 受试者中生成和/或收集了 iPSC 系,这些系将在
平行线。 使用来自 60 名人类受试者的 iPSC 衍生的神经元、星形胶质细胞和小胶质细胞,我们将测量 AD
目标 1 中的相关结果(Aβ、p-tau、细胞因子/趋化因子)并获得公正的转录组学和
目标 2 中的蛋白质组数据。这些数据将与临床数据、神经病理学数据和遗传数据整合
使用多种计算方法从细胞来源的同一受试者获得。
我们假设:1)死后大脑中的一些病理结果可以通过体外细胞预测
对 iPSC 衍生的神经元和神经胶质细胞进行检测(目标 1)和 2)某些人的神经病理学和认知能力下降
人类受试者可以通过 iPSC 衍生的转录组和蛋白质组水平网络分析进行预测
神经元和神经胶质细胞。 来自 12 个细胞系的初步数据支持 iPSC 衍生细胞将捕获某些特定的前提
定义老年人亚群的细胞和分子特征。 来自所有 50 条 ROS/MAP 线和 EOAD 的数据
目标 1 和 2 生成的模型将提供一个明确定义的框架来解决机械问题
关于广告。 在目标 3 中,我们将利用一组经过深入表征的 iPSC 衍生培养物来解决
假设 INPP5D (SHIP1) 和/或 INPPL1 (SHIP2) 的肌醇 5-磷酸酶活性失调导致
导致部分受试者的负荷风险升高。 通过这些研究,我们的目标是评估 iPSC 是否
衍生细胞可以作为认知衰退和 AD 的诊断或预后工具,并开始解决
负载异质性背后的细胞和分子机制。
项目成果
期刊论文数量(0)
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会议论文数量(0)
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Tracy L YOUNG-PEARSE其他文献
Tracy L YOUNG-PEARSE的其他文献
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{{ truncateString('Tracy L YOUNG-PEARSE', 18)}}的其他基金
Cell and Molecular Consequences of Alzheimer's Disease Genetic Variants on BBB Integrity and Function
阿尔茨海默病遗传变异对血脑屏障完整性和功能的细胞和分子影响
- 批准号:
10037760 - 财政年份:2020
- 资助金额:
$ 48.93万 - 项目类别:
Establishing a human cellular model of sex differences in the brain
建立大脑性别差异的人类细胞模型
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9752715 - 财政年份:2019
- 资助金额:
$ 48.93万 - 项目类别:
Establishing a human cellular model of sex differences in the brain
建立大脑性别差异的人类细胞模型
- 批准号:
9904767 - 财政年份:2019
- 资助金额:
$ 48.93万 - 项目类别:
Probing Heterogeneity of Alzheimer's disease using iPSCs
使用 iPSC 探索阿尔茨海默病的异质性
- 批准号:
10159823 - 财政年份:2018
- 资助金额:
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Probing Heterogeneity of Alzheimer's disease using iPSCs
使用 iPSC 探索阿尔茨海默病的异质性
- 批准号:
9923549 - 财政年份:2018
- 资助金额:
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Probing Heterogeneity of Alzheimer's Disease Using iPSCs
使用 iPSC 探索阿尔茨海默病的异质性
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