脑脊液蛋白质组在阿尔茨海默病连续体中的概况:朝着解决"X"方程式迈出了一步
Sophia Weiner1, Mathias Sauer2, Laia Montoliu-Gaya2
1Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, University of Gothenburg, Mölndal, Sweden. sophia.weiner@gu.se.
Molecular neurodegeneration
|May 6, 2025
概括
这项研究揭示了阿尔茨海默病 (AD) 进展期间脑脊髓液 (CSF) 蛋白质的新变化,确定了除粉样蛋白和蛋白之外的潜在生物标志物用于疾病分期.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 蛋白质组学是指蛋白质组学.
背景情况:
- 大脑脊髓液 (CSF) 中的粉样β (Aβ) 和的时间动态在阿尔茨海默病 (AD) 中是已知的.
- 对于了解AD的"X"过程至关重要的其他CSF蛋白质的时间变化仍然不太了解.
- ATX (N) 框架对这些"X"过程进行了分类,突出显示了它们在 CSF 的时间概况中的知识差距.
研究的目的:
- 在阿尔茨海默氏病连续体中,研究超越Aβ和tau的CSF蛋白质的时间概况.
- 识别新的蛋白质生物标志物,反映AD的不同病理过程.
- 为了与已确定的AD生物标志物和临床进展相关联的CSF蛋白质变化.
主要方法:
- 利用非定位的双重质标记 (TMT) 质谱法来量化超过1500个CSF蛋白质.
- 通过Aβ/tau PET,液体生物标志物或大脑活检分析了三个独立的队列.
- 应用加权蛋白共同表达网络分析和与流体/成像生物标志物和临床数据相关联的蛋白质集群.
主要成果:
- 与神经退行相关的蛋白质 (例如14-3-3蛋白质,PPIA) 早期增加,与Aβ和tau病理相关.
- 蛋白质SMOC1,CNN3,YWHAZ和YWHAE显示出与Aβ和/或tau病理的强烈关联.
- 内溶性体,代谢和突触/膜蛋白在AD阶段表现出动态变化,突触蛋白在后期阶段下降.
结论:
- 确定了SMOC1,YWHAE和CNN3作为Aβ和tau病理学的潜在的CSF代理.
- 在整个AD连续过程中证明了CSF蛋白质组的动态波动.
- 提出了新的候选生物标志物,用于超越传统的Aβ和tau标志物的阿尔茨海默病阶段.
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