生物标志物 生物标志物
Kalyani Chaubey1,2,3,4, Lijun Dou3,5, Edwin Vázquez-Rosa1,2,3,4
1Institute of Transformative Molecular Medicine, Case western Reserve University, Cleveland, OH, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
概括
早期阿尔茨海默病 (AD) 标志在老鼠中反映了人类的AD,神经保护性化合物使这些变化正常化. 这为预防AD提供了洞察力,通过在认知能力下降之前针对分子机制来预防AD.
科学领域:
- 神经科学是一个神经科学.
- 蛋白质组学是指蛋白质组学
- 代谢学 代谢学 代谢学
背景情况:
- 阿尔茨海默病 (AD) 是一种影响行为和认知的渐进性脑疾病,通常由抑郁症先发.
- 这项研究研究了TgF344AD大鼠模型中早期的AD分子特征,重点关注没有认知障碍的抑郁期.
研究的目的:
- 在TgF344AD大鼠模型中识别阿尔茨海默病 (AD) 的早期蛋白质和代谢特征.
- 将这些特征与人类AD数据库进行比较,以确定其临床相关性.
- 评估神经保护化合物P7C3-S243在正常化AD相关分子变化的疗效.
主要方法:
- TgF344AD小鼠表现出类似抑郁症的行为,但没有认知障碍,被P7C3-S243或车载治疗了六个月.
- 大脑蛋白质组和代谢组分别使用UPLC-MS/MS和Metabolon进行了分析.
- 识别的签名与人类AD蛋白质和代谢数据库进行了比较.
主要成果:
- 904种蛋白质和95种代谢物显示TgF344AD大鼠的显著变化与野生类型的 littermates相比.
- 许多发现的变化反映了在人类AD大脑数据库中发现的变化.
- 用P7C3-S243治疗使许多常见的老鼠和人类AD相关的分子特征正常化.
结论:
- 在TgF344 AD大鼠模型和人类AD大脑之间,在蛋白质和代谢层面上存在AD的共同和独特的分子特征.
- 神经保护性化合物P7C3-S243在老鼠中正常化了与AD相关的共享分子模式,防止了疾病的发生.
- 这些发现为有效预防阿尔茨海默病的机制提供了新的见解.
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