诺西素配方体的发育和成年状状图标志着带有直接多巴胺投射的状体人群
Emily Hueske1, Carrie Stine2,3, Tomoko Yoshida1
1McGovern Institute for Brain Research and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
The Journal of comparative neurology
|December 10, 2024
概括
诺西塞/孤儿素FQ (N/OFQ) 系统调节条形体中的多巴胺信号传递. N/OFQ神经元在体中发现,准多巴胺神经元,影响行为和认知.
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
- 遗传学 是一个遗传学.
背景情况:
- 中脑多巴胺系统对于适应性行为和认知至关重要.
- 神经系统,如nociceptin/orphanin FQ (N/OFQ),越来越多地研究它们在基底腺电路中的作用.
- N/OFQ系统是条状多巴胺信号传递的潜在调节者.
研究的目的:
- 为了研究小鼠条体中N/OFQ系统的表达模式.
- 为了确定N/OFQ表达神经元的细胞点.
- 了解N/OFQ系统在调节条纹黑道电路中的作用.
主要方法:
- 使用prepronociceptin-Cre记者小鼠线 (Pnoc) 来跟踪N/OFQ表达.
- 在背部和腹部条纹体中检查了Pnoc mRNA表达模式.
- 使用tdTomato reporter识别Pnoc表达细胞及其与多巴胺受体D1 (Drd1) 的同定位.
主要成果:
- 在背上条纹体中发现了Pnoc mRNA的高度选择性体模式.
- 观察到状体核中聚类Pnoc表达的核心,类似于状体.
- 发现Pnoc表达细胞主要是Drd1-表达的脊柱体内的中等棘状神经元.
结论:
- 在体内,N/OFQ系统表现出特定的表达模式,特别是在表达Drd1的神经元中.
- 这些神经元直接刺激中脑中的多巴胺神经元,这表明它们在调节多巴胺信号传递方面起着作用.
- 这些发现提供了对N/OFQ系统在基底节电路中的参与的见解,这对条性-黑色通路的发展和布线有意义.
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