在病症小鼠模型中的行为,形态和转录学变化的纵向表征
Qing Cao1, Manasa Kumar1, Allea Frazier1
1Department of Physiology and Biophysics, State University of New York at Buffalo, Jacobs School of Medicine and Biomedical Sciences, Buffalo, NY 14203, USA.
Aging
|November 4, 2023
概括
病症小鼠模型中的早期神经生物学变化先于行为症状. 这项研究追踪了认知,社会和神经元的变化,揭示了与阿尔茨海默病研究中的疾病进展相关的基因表达转变.
科学领域:
- 神经科学是一个神经科学.
- 基因组学就是基因组学.
- 神经退行性疾病 神经退行性疾病
背景情况:
- 像阿尔茨海默病 (AD) 这样的神经退行性疾病涉及临床诊断前几年逐渐发生的神经生物学变化.
- 了解大脑功能障碍的进展对于开发有效治疗方法至关重要.
研究的目的:
- 纵向描述P301S转基因小鼠病症模型中的行为,形态和转录基因变化.
- 阐明分子变化与神经退行性症状的出现之间的时间关系.
主要方法:
- 纵向行为测试 (认知和社会缺陷).
- 对神经元树枝状树木化 (海马和PFC神经元) 的形态分析.
- 全基因组转录组分析以确定基因表达变化.
主要成果:
- P301S小鼠在3个月时表现出认知缺陷,5-6个月时表现出社会缺陷.
- 在海马神经元 (3个月) 和PFC神经元 (9个月) 中观察到减少的树木状树木化.
- 在3个月的早期突触基因上调之后,在9个月的时间里,PFC和海马体的广泛下调.
结论:
- 病模型中的依赖时间的基因表达变化有助于神经元的渐进性结构和功能变化.
- 这些分子和细胞的变化之前,可能驱动的表现的行为症状在病.
- 这项研究提供了关于阿尔茨海默氏症和相关病的早期病原体的见解.
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