增加的棕化改善了雌激素受体α-依赖的海马突触缺陷在突核蛋白病症的小鼠模型
Tim E Moors1, Shaomin Li1, Thomas D McCaffery1
1Ann Romney Center for Neurologic Diseases, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
Science advances
|November 17, 2023
概括
雌性和雌醇通过改善雌激素受体α (ERα) 棕化介导的α-synuclein (αS) 恒温和突触功能来保护帕金森病 (PD) 病理.
科学领域:
- 神经科学是一个神经科学.
- 内分泌学 在内分泌学.
- 分子生物学分子生物学
背景情况:
- 帕金森病 (PD) 涉及α-synuclein (αS) 聚合和神经元退化.
- 早期患有PD的女性表现出较轻微的神经退行,这表明女性性别的保护作用.
- 之前的研究表明,雌性和雌醇在小鼠模型中改善αS稳态和PD表型.
研究的目的:
- 为了研究早期PD的性别二态化背后的机制.
- 探索雌激素受体α (ERα) 在αS病理和突触功能中的作用.
- 确定ERα棕化对PD相关表型的影响.
主要方法:
- 使用E46K放大 (3K) αS小鼠模型的PD.
- 评估了突触异常,认知和运动功能.
- 研究了ERα的分布和棕化.
- 给药ML348,一个de-palmitoylation抑制剂,以评估其作用.
主要成果:
- 在雌性小鼠中,突触异常被延迟,并通过雌醇得到改善.
- 雌激素的作用是由局部雌激素受体α (ERα) 介导的.
- 与野生类型相比,3K小鼠的ERα棕化减少.
- ML348治疗增强了ERα可用性,改善了αS稳态,改善了突触可塑性和行为缺陷.
结论:
- 在早期PD中,αS诱导的突触损伤的性别差异部分由棕化ERα介导.
- ERα棕化是PD的潜在治疗点.
- 这些发现对了解和治疗临床帕金森病有意义.
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