运动和高压激素对小非编码RNA转录基因和蛋白质基因在情感障碍小鼠模型中的血清受影响
Maria Kuznetsova1, Carey Wilson1, Lesley Cheng2
1Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, University of Melbourne, Parkville, Australia.
Neuropharmacology
|November 29, 2024
概括
环境因素通过表观遗传调节影响抑郁症中的基因表达,特别是微RNA (miRNA). 运动可能提供抗抑郁药的好处,但功能性血清素载体 (5-HTT) 对这些效应至关重要.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
背景情况:
- 环境因素通过表观遗传机制影响抑郁症和焦虑症的基因表达,包括微RNA (miRNA).
- 在这些疾病中,环境刺激调节miRNA表达的确切机制尚不清楚.
- 胺转运体 (5-HTT) 在情绪调节中起着至关重要的作用,是抗抑郁药物治疗的目标.
研究的目的:
- 为了研究自愿运动和慢性皮质激素治疗对海马体miRNA和蛋白质的作用,在抑郁症/焦虑症小鼠模型中进行了血清素载体淘汰 (5-HTT KO).
- 将这些效应与野生型 (WT) 鼠标进行比较,以了解基因与环境的相互作用.
- 阐明5-HTT在调解分子对环境刺激反应中的作用.
主要方法:
- 使用了5-HTT淘汰赛小鼠模型和野生类型的控制.
- 应用自愿运动 (EX) 和慢性皮质激素治疗 (CT) 作为环境操纵.
- 采用高通量miRNA测序和基于质谱 (MS) 的蛋白质组学来分析海马组织.
主要成果:
- 与WT对照相比,5-HTTKO小鼠在337个小RNA和67个蛋白质中表现出显著的差异.
- 在WT和5-HTTKO小鼠中,运动调节的miRNA和蛋白质表达不同,在KO小鼠中变化较少.
- 皮质激素治疗改变了WT小鼠的miRNA和蛋白质表达,模仿了在5-HTTKO小鼠中观察到的一些变化,而运动显示出类似抗抑郁药的效果.
结论:
- 在5-HTT KO小鼠中的血清功能障碍改变了参与神经发育,神经发生和神经炎症的miRNA和蛋白质表达.
- 环境因素,如压力 (皮质) 可以诱导类似于抑郁症遗传倾向的分子变化.
- 功能性5-HTT似乎是必要的,以调解运动对miRNA表达的有益,类似于抗抑郁药的效果,突出表现了情感障碍中的基因环境相互作用.
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