New assay method for pinpointing structural features in amyloid oligomer formation
精确定位淀粉样蛋白寡聚体形成结构特征的新测定方法
基本信息
- 批准号:10214240
- 负责人:
- 金额:$ 55.87万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2021
- 资助国家:美国
- 起止时间:2021-05-15 至 2023-04-30
- 项目状态:已结题
- 来源:
- 关键词:AffectAlzheimer&aposs DiseaseAlzheimer&aposs disease therapeuticAmino Acid SequenceAmyloidAmyloid FibrilsAmyloid ProteinsAmyloid beta-ProteinBindingBiological AssayBiomedical ResearchChargeClinical TrialsComplexDataDevelopmentDiseaseDisease ProgressionFailureFutureGoalsGrantHourHydroxyl RadicalImpaired cognitionInvestigationLeadMass Spectrum AnalysisMethodologyMethodsMolecularMolecular ConformationMutationNoisePathogenesisPathway interactionsPeptidesProcessProtein ConformationProtein DynamicsProteinsPublic HealthResearch PersonnelRoentgen RaysRoleSamplingSignal TransductionSolventsStructureSystemTechniquesTestingTherapeuticTimeToxic effectVariantWorkaggregation pathwayamyloid peptideamyloid precursor protein processingbasebrain tissuedesigndrug discoveryfamilial Alzheimer diseaseinstrumention mobilitymillisecondmisfolded proteinneurotoxicitynew technologynovel therapeuticspeptide P3protein aminoacid sequencestoichiometrytherapeutic targettool
项目摘要
Summary
The goal of this project is to provide a significant new technology for biomedical research,
particularly for researchers studying proteins associated with the progression of Alzheimer's
Disease (AD). The majority of efforts to develop therapeutics for AD, most of which have
targeted Aβ fibrils, have failed. A growing body of evidence now suggests that oligomeric forms
of Aβ, which are intermediates that form during the aggregation process, may be the culprits in
disease progression. However, in order to design therapeutics targeting toxic oligomeric species
or other altered protein forms, we first require structural information on those species. Here, we
propose a new structural method to characterize oligomeric intermediates in aggregation-prone
systems, and to test the new methodology on specific amyloid peptides implicated in AD. This
work will develop a new structural assay which synergistically combines local and global
structural mass spectrometry-based methods. The hydroxyl radical solvent accessibility method
reveals local residue-specific structural changes that occur as a function of conformational
changes or complex formation, while the native mass spectrometry method reveals global
structural information on oligomer size and stoichiometry. These methods will be applied to the
study of the amyloid peptides in the familial forms of AD to determine how the oligomeric states
of these peptides differ from the wildtype. The new assay will also be used to characterize the
interaction between amyloid peptides and the p3 peptide, which is twice as abundant as the
more well-studied Aβ, fibrilzes faster than Ab, but can mitigate Ab toxicity. Finally, we will relate
these intermediate structural forms to toxicity. These results will be of immense therapeutic
value for AD, and will lay the groundwork for future structural investigations of difficult-to-study
intermediate forms in a wide range of diseases caused by the aggregation or misfolding of
proteins.
总结
该项目的目标是为生物医学研究提供一种重要的新技术,
特别是对于研究与阿尔茨海默氏症进展相关的蛋白质的研究人员来说,
疾病(AD)。开发AD治疗药物的大多数努力,其中大部分已经
靶向Aβ纤维,已经失败了。越来越多的证据表明,
Aβ是聚集过程中形成的中间体,可能是
疾病进展。然而,为了设计靶向毒性寡聚物种类的治疗剂,
或其他改变的蛋白质形式,我们首先需要这些物种的结构信息。这里我们
提出了一种新的结构方法来表征聚合倾向中的低聚中间体
系统,并测试新的方法对特定的淀粉样肽牵连在AD。这
工作将开发一种新的结构分析,协同结合当地和全球
基于结构质谱的方法。羟基自由基溶剂可及性法
揭示了作为构象的函数发生的局部残留物特异性结构变化
变化或复杂的形成,而本地质谱法揭示了全球
关于低聚物尺寸和化学计量的结构信息。这些方法将应用于
研究家族性AD中的淀粉样肽,以确定寡聚体状态
与野生型不同。新的检测方法也将用于表征
淀粉样蛋白肽和p3肽之间的相互作用,其丰度是淀粉样蛋白肽的两倍。
更充分研究的Aβ,原纤化比Ab更快,但可以减轻Ab毒性。最后,我们将
这些中间结构形式的毒性。这些结果将是巨大的治疗
价值,并将奠定基础,为今后的结构调查,难以研究
中间形式在广泛的疾病引起的聚集或错误折叠的
proteins.
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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CORIE Y RALSTON其他文献
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{{ truncateString('CORIE Y RALSTON', 18)}}的其他基金
Development of high-dose time-resolved X-ray footprinting technologies to enable detailed structural and kinetics information to be obtained for challenging biological problems
开发高剂量时间分辨 X 射线足迹技术,以获得具有挑战性的生物问题的详细结构和动力学信息
- 批准号:
10446793 - 财政年份:2018
- 资助金额:
$ 55.87万 - 项目类别:
Development of high-dose time-resolved X-ray footprinting technologies to enable detailed structural and kinetics information to be obtained for challenging biological problems
开发高剂量时间分辨 X 射线足迹技术,以获得具有挑战性的生物问题的详细结构和动力学信息
- 批准号:
10630950 - 财政年份:2018
- 资助金额:
$ 55.87万 - 项目类别:
High throughput X-ray footprinting mass spectrometry (XFMS)
高通量 X 射线足迹质谱 (XFMS)
- 批准号:
10506288 - 财政年份:2017
- 资助金额:
$ 55.87万 - 项目类别:
High throughput X-ray footprinting mass spectrometry (XFMS)
高通量 X 射线足迹质谱 (XFMS)
- 批准号:
10708045 - 财政年份:2017
- 资助金额:
$ 55.87万 - 项目类别:
STRUCTURE OF TWO NIFE CLUSTERS IN CODH FROM CLOSTRIDIUM THERMOACETICUM
热乙酸梭菌 CODH 中两个 NIFE 簇的结构
- 批准号:
6658656 - 财政年份:2002
- 资助金额:
$ 55.87万 - 项目类别:
STRUCTURE OF TWO NIFE CLUSTERS IN CODH FROM CLOSTRIDIUM THERMOACETICUM
热乙酸梭菌 CODH 中两个 NIFE 簇的结构
- 批准号:
6586689 - 财政年份:2002
- 资助金额:
$ 55.87万 - 项目类别:
STRUCTURE OF TWO NIFE CLUSTERS IN CODH FROM CLOSTRIDIUM THERMOACETICUM
热乙酸梭菌 CODH 中两个 NIFE 簇的结构
- 批准号:
6437607 - 财政年份:2001
- 资助金额:
$ 55.87万 - 项目类别: