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Proteomic Atlas of the Human Brain in Alzheimer's Disease.
Journal of Proteome Research ( IF 3.8 ) Pub Date : 2019-02-20 , DOI: 10.1021/acs.jproteome.9b00004
Justin McKetney , Rosalyn M Runde , Alexander S Hebert , Shahriar Salamat , Subhojit Roy , Joshua J Coon 1
Affiliation  

The brain represents one of the most divergent and critical organs in the human body. Yet, it can be afflicted by a variety of neurodegenerative diseases specifically linked to aging, about which we lack a full biomolecular understanding of onset and progression, such as Alzheimer's disease (AD). Here we provide a proteomic resource comprising nine anatomically distinct sections from three aged individuals, across a spectrum of disease progression, categorized by quantity of neurofibrillary tangles. Using state-of-the-art mass spectrometry, we identify a core brain proteome that exhibits only small variance in expression, accompanied by a group of proteins that are highly differentially expressed in individual sections and broader regions. AD affected tissue exhibited slightly elevated levels of tau protein with similar relative expression to factors associated with the AD pathology. Substantial differences were identified between previous proteomic studies of mature adult brains and our aged cohort. Our findings suggest considerable value in examining specifically the brain proteome of aged human populations from a multiregional perspective. This resource can serve as a guide, as well as a point of reference for how specific regions of the brain are affected by aging and neurodegeneration.

中文翻译:

阿尔茨海默病人脑蛋白质组图谱。

大脑是人体最多样化和最关键的器官之一。然而,它可能受到多种与衰老相关的神经退行性疾病的影响,而我们对这些疾病的发病和进展缺乏全面的生物分子了解,例如阿尔茨海默病 (AD)。在这里,我们提供了蛋白质组资源,包括来自三个老年人的九个解剖学上不同的部分,涵盖一系列疾病进展,并按神经原纤维缠结的数量进行分类。使用最先进的质谱分析法,我们确定了一个核心大脑蛋白质组,其表达仅表现出很小的差异,并伴有一组在各个切片和更广泛区域中表达高度差异的蛋白质。AD 受影响的组织表现出 tau 蛋白水平略有升高,其相对表达与 AD 病理相关因子相似。之前对成熟成人大脑和我们的老年群体的蛋白质组学研究发现了显着差异。我们的研究结果表明,从多区域的角度专门研究老年人群的大脑蛋白质组具有相当大的价值。该资源可以作为指南,以及大脑特定区域如何受到衰老和神经退行性影响的参考点。
更新日期:2019-02-20
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