通过基因编码的光传感器测量在背侧条纹体中明显的次秒多巴胺信号
Armando G Salinas1,2,3, Jeong Oen Lee4, Shana M Augustin4,5
1Laboratory for Integrative Neuroscience, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD, USA. armando.salinas@lsuhs.edu.
Nature communications
|September 22, 2023
概括
像dLight这样的基因编码的多巴胺传感器能够在脊侧条纹体 (DLS) 中测量多巴胺. 这项研究验证了dLight光度计在体内跟踪多巴胺动态,即使在复杂的行为中.
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
- 生物化学 生物化学
背景情况:
- 基因编码的多巴胺传感器,如dLight,为实时测量多巴胺动态提供了新的方法.
- 传统的技术,如快速扫描循环电压测量 (FSCV),在特定的大脑区域面临挑战,包括背侧条纹体 (DLS).
研究的目的:
- 评估dLight光度计在DLS中测量多巴胺动态的有效性.
- 在脑切片中比较dLight光度与FSCV.
- 为了研究多巴胺对可卡因的反应以及在体内调节过程中的反应.
主要方法:
- 在老鼠大脑切片中同时进行dLight光度测量和FSCV.
- 在小鼠中使用dLight进行体内纤维光度测量.
- 对多巴胺载体抑制剂 (可卡因) 作用的评估.
- 在帕夫洛夫制约过程中对多巴胺反应的分析.
主要成果:
- dLight光度和FSCV在脑切片中显示了相似的结果,对可卡因的反应不同.
- 在DLS中使用体内dLight光度测量可以很容易地检测到多巴胺的增加.
- 观察到过渡性多巴胺动力学和缓慢发展的信号在调节期间.
结论:
- dLight光度是测量DLS中多巴胺动态的一个合适的技术.
- 这种方法可以研究以前难以进入的大脑区域的多巴胺信号.
- dLight光度提供了对快速和缓慢的多巴胺信号模式的洞察.
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