早期资源稀缺导致皮质星细胞扩大和成年大鼠的轨道前皮层转录组的性别特异性变化
Claire Deckers1, Reza Karbalaei1, Nylah A Miles1
1Department of Psychology and Neuroscience Program, Temple University, Philadelphia, USA.
Neurobiology of stress
|February 2, 2024
概括
在老鼠的早期生活压力改变了星细胞大小和大脑信号,促进了对成的弹性. 这些天体细胞形态的变化可能会调解早期环境挑战的长期影响.
科学领域:
- 神经科学是一个神经科学.
- 发育神经科学的发展神经科学.
- 细胞神经科学 细胞神经科学
背景情况:
- 星球细胞形态与环境刺激有动态变化.
- 早期的生活经历可以对大脑结构和功能产生持久的影响.
- 早期生活压力对成年天体细胞形态在特定的大脑区域的影响还不太清楚.
研究的目的:
- 调查早期生命资源稀缺性 (有限的床铺和筑巢操纵) 如何影响中间轨道前皮层 (mOFC) 和中间前皮层 (mPFC) 的成年天体细胞形态.
- 为了探索与改变天体细胞形态相关的转录变化,以应对生命早期的压力.
- 为了确定这些变化是否是性别特异性的.
主要方法:
- 利用一种新的病毒标记技术进行全面的天体细胞可视化.
- 成年大鼠暴露于早期生命资源稀缺的mOFC和mPFC中的量化天体细胞表面积和体积.
- 在OFC组织上进行大量RNA测序,以识别转录性变化.
主要成果:
- 早期生命资源的稀缺性显著增加了成年大鼠的mOFC和mPFC中的星细胞表面积和体积.
- 大量RNA测序揭示了资源稀缺的老鼠的OFC中的性别特异的转录变化.
- 途径分析表明,OFC中的谷氨酸激素信号发生变化,具有性别特异的基因表达模式.
结论:
- 早期生活资源的稀缺性会导致与成相关的行为有关的关键大脑区域的天体细胞形态的持久变化.
- 这些形态变化与性别特异的转录变化和改变的谷氨酸信号传递有关.
- 星球细胞代表了一个潜在的细胞机制,通过这种机制,早期的生活压力会影响成人的大脑功能和行为.
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