与阿尔茨海默病病理生理学相关的阿波利波蛋白B基因表达和调节
Gabriel Aumont-Rodrigue1, Cynthia Picard2, Anne Labonté2
1Douglas Mental Health University Institute, Neurosciences divison, Montréal, Québec, Canada; Centre for the Studies on Prevention of Alzheimer's Disease, Montréal, Québec, Canada; McGill University, Psychiatry department, Montréal, Québec, Canada.
Journal of lipid research
|October 12, 2024
概括
阿波蛋白B (APOB) 蛋白水平与阿尔茨海默病 (AD) 病理学和认知衰退相关. 然而,APOB基因表达与AD生物标志物有负相关性,这表明AD在病变发生过程中扮演着复杂的角色.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 生物化学 生物化学
背景情况:
- 阿波蛋白B (APOB) 对于脂蛋白代谢至关重要,并与阿尔茨海默氏症 (AD) 病原发生有关.
- 含有APOB的低密度脂蛋白 (LDL) 的高水平与家族性和零星性AD有关.
- 遗传研究表明,APOB在中枢神经系统和AD中的作用.
研究的目的:
- 研究阿尔茨海默病 (AD) 谱中APOB基因的调节.
- 检查APOB水平,AD病理和认知功能之间的关系.
- 探索影响大脑APOB水平的遗传因素.
主要方法:
- 对四个人类队列 (BRAINEAC,DBCBB,ROSMAP,ADNI) 的分析,包括对照组,轻度认知障碍 (MCI) 和AD大脑/受试者.
- 使用质谱和ELISA量化APOB蛋白质和mRNA水平.
- 对APOB和CYP27A1基因变异进行基因定型,包括rs4674344.
主要成果:
- APOB蛋白水平与AD病理指数和认知衰退正相关.
- APOB mRNA水平与AD病理和生物标志物水平负相关.
- 皮层APOB水平与粉样β (Aβ) 沉积相关;CSFAPOB与症状前个体的Tau病理相关.
结论:
- APOB在脂蛋白代谢中的作用影响了疾病各个阶段的AD病理.
- 大脑APOB蛋白水平与AD病理学有关,而基因表达则显示出相反的关系.
- 在AD中对血脑屏障功能障碍的潜在影响,由APOB神经生物学调解.
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