心血管疾病中蛋白质稳定性改变有助于阿尔茨海默氏症类的神经病理学
Nirjal Mainali1,2, Meenakshisundaram Balasubramaniam2, Sonu Pahal1,2
1Bioinformatics Program, University of Arkansas for Medical Sciences and University of Arkansas at Little Rock, Little Rock, AR, 72205, USA.
Basic research in cardiology
|May 7, 2025
概括
小鼠心肌梗塞 (MI) 和心血管疾病 (CVD) 患者表现出共同的蛋白质聚合和内质网膜 (ER) 压力,将心脏问题与神经退行风险联系起来.
科学领域:
- 神经生物学 神经生物学 神经生物学
- 心脏病学 心脏病学
- 蛋白质组学是指蛋白质组学.
背景情况:
- 心血管疾病 (CVD) 是全球主要的死亡原因.
- 心血管疾病与增加神经退行风险有关,但潜在的机制尚不清楚.
- 之前的研究表明,心肌梗塞 (MI) 诱导蛋白质聚合和心脏和大脑的ER压力.
研究的目的:
- 研究将心脏病发作和神经退行症联系在一起的分子机制.
- 将MI小鼠模型中的分子变化与人类阿尔茨海默病 (AD) 和心血管疾病患者总量进行比较.
- 识别MI改变的关键蛋白质和通路,并与神经退行有关.
主要方法:
- 在小鼠中诱导MI和与假MI对照进行比较.
- 从阿尔茨海默氏症,心血管疾病患者和年龄匹配对照 (AMC) 获得的人类海马体聚合物的蛋白质组分析.
- 在聚合体内进行交叉链接,以绘制蛋白质与蛋白质相互作用 ("接触体") 的地图.
- 抛出一个分析 (LOOA) 来评估蛋白质对聚合凝聚力的贡献.
- 基因本体学进行元分析以确定关键途径.
主要成果:
- 在AD和CVD聚合物中确定了影响性蛋白质.
- 发现了与神经退行相关的共同途径,包括线粒体功能障碍,氧化应激,ER应激,蛋白质聚合和蛋白质稳定性受损 (ubiquitin-proteasome系统,自).
- 突出了轴突运输和突触功能中的改变.
结论:
- 肌痛性肌痛诱导大脑中的分子变化,这些变化与AD等人类神经退行性疾病中发现的分子变化重叠.
- 蛋白质聚合和ER压力是关键的共同机制,将心血管健康和大脑完整性联系起来.
- 这些发现为CVD相关的神经退行症的分子基础提供了洞察力.
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