来自血管内皮细胞的CCN1在阿尔茨海默病模型小鼠中损害了认知功能
Shuntaro Hirabayashi1, Akiko Uyeda2, Ichiro Manabe3
1Department of Molecular Pharmacology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan; Department of Analytical Biochemistry, Graduate School of Pharmaceutical Sciences, Meiji Pharmaceutical University, Tokyo, Japan; Department of Pharmacognosy and Phytochemistry, Meiji Pharmaceutical University, Tokyo, Japan.
Journal of pharmacological sciences
|February 10, 2025
概括
大脑血管中的细胞通信网络因子1 (CCN1) 在阿尔茨海默病 (AD) 中损害了认知功能. 在AD小鼠中减少CCN1改善了记忆和脑细胞连接.
科学领域:
- 神经科学是一个神经科学.
- 血管生物学 血管生物学
- 分子生物学分子生物学
背景情况:
- 脑血管失调是阿尔茨海默病 (AD) 的一个关键特征.
- 在AD进展过程中大脑血管内皮细胞 (VEC) 中分子变化的作用对神经元功能仍然不清楚.
- 了解这些神经血管相互作用对于开发有效的AD疗法至关重要.
研究的目的:
- 调查细胞通信网络因子1 (CCN1) 的作用,通过VECs在AD期间的认知障碍中表达.
- 在AD的背景下阐明CCN1对突触可塑性和神经元功能的影响.
- 探索CCN1作为AD相关神经功能障碍的潜在治疗标.
主要方法:
- 从AppNL-G-F AD小鼠模型中分析VEC中的基因表达.
- 在体外研究中,使用培养的海马细胞进行了CCN1.1治疗.
- 在体内实验中,AD小鼠的VEC中使用了CCN1沉默.
- 评估认知功能,突触密度和神经病理标记 (微质,星球细胞,粉样蛋白-β).
主要成果:
- 在老鼠AD慢性阶段的VEC中,CCN1表达显著上调.
- CCN1治疗减少了培养神经元中的突触数量,改变了与细胞形态相关的基因表达.
- 在AD小鼠的VEC中抑制CCN1导致脊柱密度增加和空间学习的改善.
- 没有观察到质细胞群或粉样β负荷的显著变化,这表明直接的神经血管效应.
结论:
- 由VECs表达的CCN1在调解阿尔茨海默病的认知衰退方面发挥着关键作用.
- CCN1直接影响突触结构和功能,导致神经系统缺陷.
- 针对VEC中的CCN1是一个有前途的治疗策略,可以缓解AD中的神经血管功能障碍.
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