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在阿尔茨海默氏病小鼠模型中,片通过减弱线粒体功能的作用,将抑郁类行为和认知衰退联系起来
Yamei Wang1,2, Jianhao Wang1,2, Hongyu Chen1,2
1Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China.
Frontiers in aging neuroscience
|December 22, 2023
概括
与阿尔茨海默病相关的抑郁症涉及一个tau片段 (tau N368),通过与PPAR-δ交互来损害线粒体功能. 抑制AEP或激活PPAR-δ可缓解AD小鼠模型中的抑郁行为和认知衰退.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 病理生理学 病理生理学
背景情况:
- 阿尔茨海默病 (AD) 是一种流行的神经退行性疾病.
- 抑郁症是阿兹海默症患者常见的神经精神病症状,加速认知能力下降.
- 连接抑郁症和AD的分子机制仍然不清楚.
研究的目的:
- 在阿尔茨海默氏病模型中调查潜在的抑郁症状的分子机制.
- 探索碎片及其相互作用在压力诱导的抑郁和认知衰退中的作用.
- 为了确定缓解这些症状的潜在治疗点.
主要方法:
- 在hTau小鼠中诱导类似抑郁的行为和认知衰退,使用慢性克制压力 (CRS).
- 计算预测和分子实验,以确定Tau碎片和PPAR-δ之间的相互作用.
- 行为研究,以评估Tau N368-PPAR-δ相互作用对压力下的AD模型的影响.
- 在海马体中评估线粒体功能和PPAR-δ活性.
主要成果:
- 线粒体功能障碍与hTau小鼠的抑郁行为和认知缺陷相关.
- 慢性压力增加了Tau N368水平及其与PPAR-δ的相互作用,抑制了海马中的PPAR-δ活性.
- 抑制AEP,清除Tau N368和药理激活PPAR-δ改善了压力诱导的抑郁行为和认知衰退.
结论:
- 陶N368通过抑制PPAR-δ来损害海马的线粒体功能,导致AD模型中的抑郁行为和认知衰退.
- 这些发现为阿尔茨海默病中抑郁症的病理生理学提供了新的机制性见解.
- 准Tau N368-PPAR-δ通路为AD相关抑郁症提供了潜在的治疗策略.
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